After getting a lot of feedback, I thought I would share some updates from what I have learned. It appears that the Tesla software won't let the frunk open unless the battery is either really dead OR you have your phone key with you and you wake up the screen - like when you open the door. Otherwise, the A23 battery will not work. This is good as it will prevent some random person from opening your car if you hide the batteries in the front. Thanks for all the great feedback!
If you are going to jump start it with 12V battery, why need a small battery to open the hook? just use the same jump start battery to open the hook. No?
Jim, this video is one of the many reasons why your channel is one of the best Tesla content channels. No time wasting 45 second intro, no overblown ego, just great tips and information. Thanks very much.
You don’t need this extra battery to open your frunk. If you are already going to jump your Tesla from another 12V source, you simply connect the jumper cables to those wire leads via jumper cables. That is the intended use, no additional battery needs to be stored on the vehicle
So where IS your booster battery and jumper cables? In the Frunk? In the trunk? Surprise, you can't get to it! That's unless you pop the Frunk and jump the car's 12 battery. Then you can get your 12v booster and jumper cables to jump the car's 12v which allows you to unlock the whole car. So you do need the mini 12v battery. That's unless you have a 12v booster source that's not stored in the car.
This great video was clearly made for me. I got me the adaptors, I got me the pucks, I got me the tire repair kit, I got me the compressor, I got me lotsa other stuff too. Now I'll have a battery hidden in that little tow slot thingy. Thanks so much.
A 9v battery works as well. I keep my 12v jumper unit in the Frunk so I can jump myself or anyone else. You are so right Jim! Us Tesla drivers are prepared.
Wow dude I’ve owned my MYP for 30 months. I carry a portable jump starter never thought I could just keep a little old battery in the car. You are outstanding. I learned something from you. Thank you very very much.
Great, great idea. Much better than the larger 9 volt battery (which also has 2 outlets just ready to short out). Small suggestion. Put a reminder in your phone to replace this A23 battery every 2 years. Insurance that costs $1.50 per year! However, I would consider finding another, less obvious hiding location. Maybe behind the license plate, or inside the Model Y tow cover. I carry a little container on my keychain with some emergency pills, and it should fit in there, just put electrical tape over the contacts, to prevent shorting. And since the A23 is an alkaline battery, no restrictions on carrying it on airplanes, etc.
If you're going to get a jump start you don't need a battery at all. Just use the jumper leads of the battery that's going to jump start it. Also... the newer Tesla's have a 16v battery, not 12v. Jump starting will get you into your car but if that battery is dead it will need to be replaced.
After 9 months with my Tesla Y, I thought I knew everything about my baby, until I found your video! Informative and super helpful, heading to the store to buy that little battery to hide in that compartment in the bumper. Thank you!!
This is good information. But the thing that worries me is someone can use this trick to open up your frunk. I was always told that the frunk was the safest place to lock valuables in a locked Tesla because it couldn't be opened from the outside without the car being unlocked. This video makes it seem that anyone with one of those batteries and access to a Tesla can get into your frunk. Thanks for the content.
This was a great tip. Thanks. However, in my x, if you look under the front of your car there are two panels. Underneath one of my panels is a frunk release lever, in case something happens and you can’t digitally open your trunk. I’m sure the other models have one, too. Something worth looking into. 😊
On Thursday of this past week my A23-12 v battery that I use in my GTO transmitter to open my gate to my property died so I ordered two from the Home Depot. This morning I bumped into your UA-cam channel and I will place the second battery in the location you mentioned. Thank you for sharing and I agree that Tesla owners are. Active. My next battery 12 v for the Tesla model 3 will be a lithium ion 12-volt. I just read your update on the dead 12-volt battery and since I do not use a cellphone to open the car door but the card key on the b-pillar I will have to do more research. I have read that the 12-volt that is lead that comes with a car is good for four and a half to five years, I will preorder a new 12 volt battery and place it in my garage and install it a half-year early as mine is now four and a half years old.
my battery went dead over the weekend. i ended up using jumper cables from my other car to touch those towhook wires and it popped open. then removed the terminal and trickle charge the battery. s
Thanks for organizing today’s Tesla Rally, traveling from West Des Moines, up to Ledgers State Park! I enjoyed the good company, beautiful scenery and great BBQ food!
Excellent tip Jim! Thank you. Waiting for my 23 Y expected late March. Just ordered the battery. Keep up the great work. Also ordered the tire repair kit you recommended.
My Son’s 2019 m3 had the battery warning pop up - he messaged Tesla service & they had him come over to the service center right away - $114 done & done - pretty cool indeed - I ordered the a23 batteries recommended here for emergency backup for my model y
Awesome advice about storing the backup battery behind the plug! Three years ago when I got my Model 3, anyone could open my frunk with a 9 volt battery, but with a software update, it won’t open unless the 12 volt battery is dead. There is some backup 12 volt power in the penthouse of the high voltage battery, that is why Tesla has you unplug the connector beneath the left side of the back seat. I know that this is way beyond the scope of this video, but I threw it in for those that are interested in more information ℹ️
This is ingenious! I had no idea. Question: could you not hook up jumper cables to the two small tow hook wires and get the same effect if you don’t have one of these little batteries?
I couldn't get into my car and 12 volt was dead this did work if you open that cover and don't see wires just put your finger in there and feel around for the 2 wires once you find them I took electrical tape and taped my small batteries to the two wires so that it's there when I need it you will still need to Put jumper cables on that 12v battery but make sure ***WHEN You Do This the car your using is Not Running **** once you do that hook up jumper cables your car horn might start blowing just ignore that and check to see if you can open car doors via phone or key card u should be able to access the cabin if you need a new battery just remove the old there are videos on you tube that will show you the steps to remove battery and replace it it's not very hard just follow steps tesla service center has batteries for sale
I didn't get any Warning about my 12 volt battery being low and then I couldn't get into car at all lucky for me I was at home key card did not work or phone app I was locked out of car completely and car was dead
Awesome. Thanks for this tip on using the special battery to open the Frunk. Didn't realize they made that size 12v battery in the size of a AAA battery. I have a brand new Tesla model Y, so hopefully my vehicle 12V battery will be good for a while. Thanks again and take care.
One thing to remember with the plug kits is that a plug alone is not condidered a proper repair. The speed rating is removed and the weight rating is reduced. Also, run flat tires are not considered repairable, so a rire that has been plugged must be replaced, along with the tire on the other side of the axle, as soon as possible. Run flat tires are limited as to speed and distance
Thank you for posting this video. Your tip worked like a charm save myself probably thousands of dollars waiting for Tesla service to come unplug the car then for Tesla roadside to come tow the car pretty far away and then for Tesla to change the battery. Very, very helpful video
Thats got to be the best tip I've ever gotten anywhere...ever. I would never have known that had I not come across your channel looking for how to get to my 12v in my Model S...glad I stopped to check it out!!!
Read the replies above because the software updates have changed it and this doesn’t always work! The battery Hass to be completely done now, which is a new precaution with the latest software.
I was about to say what everyone else is saying that you don't need the small battery if you are getting a jump from someone else. However, what I'm going to do it carry the small battery when possible and keep a booster battery in the frunk.
My wife carries an A23 battery in her purse when we travel outside our HOME area and local Service Center here in St Louis. I have a Plug Kit and Air Compressor. My Y will be 2 years old in July 2022, am thinking about doing a pre-emptive strike replacing the 12V battery BEFORE it fails. The recent cost for a Mobil Tech service call is about $125 to replace the 12V battery.
If you don’t happen to have the fancy 12 V battery, you should be able to MacGyver it with eight AA batteries. Just tape them in series (end-to-end), and 8 * 1.5V = 12V.
I already have a 12V battery used for powering my Yamaha keyboard when playing outdoor. It last about 4 hours. Will make sure to carry it in my Tesla. The idea of 8 AA batteries connected in series is also a great one.
Oh yeah baby, I hit subscribe...I am researching, digesting, processing, learning, and enjoying the adventure as I prepare to move from my Hybrid into EV...Thank you for the video...
When it does come time to replace the 12V battery, I would say, whether it is in warranty or not, spend the extra money and get the Ohmmu lithium ion 12V battery. This is actually standard on all Teslas (even the 3 and Y) as of 2022 (well not the Ohmmu one, but an official one).
@@nathanc.4862 Yep...I've had one for 3 weeks now. I did have some initial issues, but they said it was due to an outdated firmware. Ohmmu support was extremely helpful and I haven't had any issues since.
@@lowfuel6089 The car giving replace 12V battery errors. With the new battery once they get the new app version out it will be possible to do over the air firmware updates, but that won't be until spring. So for now they have to swap the battery with one with a newer firmware. I have since had the error come up again and am currently working with their support.
Why do you want access to 12V battery? So that you can charge it or replace with another 12V. Both of those scenarios mean you already have 12V source and thanks to your great info, all needed to open that frunk. That little battery looks like a little waste.
I had the same thought, but I think the idea is that some people will want to store one of those 12V booster packs in the frunk, so the small battery gives you access to it. I can see this making sense if you're travelling far off the beaten path.
Presumably your Tesla will display a warning msg that your 12v battery is low on charge, don’t ignore the msg, immediately contact Tesla and make an appointment to take it to a service center or have a mobile service guy come to you. The battery will die not long after the warning is given so don’t delay in getting a new 12v battery. I’ve read that the lifespan is 3-4 yrs. As it gets to the 3 yr mark you may want to just get a new battery if you are planning a long trip.
That is a battery used for garage door openers. So if you found someone with a garage door opener in their car you could borrow the battery and do that. Also any place that sells garage door openers would probably have those batteries in stock. But the smart move would be to replace the Tesla 12 volt battery when you get the notice on the screen that it needs replacing.
I had the same thought, but I think the idea is that some people will want to store one of those portable booster packs in the frunk, so the small battery gives you access to it. I can see this making sense if you're travelling far off the beaten path.
Thank you for another fantastic video! I am awaiting the arrival of my 2023 MY LR (due between 2/21-3/21). My hallway is filled with deliveries for the MY, from floor pads , screen cover, tire compressor…Tesla card case! Now, I will be ordering the batteries you recommended.
Excellent information. The representative told me when I picked up my 2023 Model 3, that it did have the new 12 volt ion battery. What actually charges the 12 volt battery? I keep the car plugged in. I'm not a daily driver.Thanks.
If you have a newer car with the lithium low-voltage battery, then it's not actually 12 volts anymore; I think it's 16. To answer your question, the low-voltage battery is charged from the high-voltage battery using a DC-DC converter. In normal operation you don't need to do anything to keep the low-voltage battery charged. However, it is recommended that you keep the car plugged in, because the car periodically wakes up to run system tests, charge the low voltage battery, etc., and if you're plugged in to the wall, it will use AC power for these things instead of depleting the high-voltage/traction battery. Look for this in your manual: About the High Voltage Battery Model 3 has one of the most sophisticated battery systems in the world. The most important way to preserve the high voltage Battery is to LEAVE YOUR VEHICLE PLUGGED IN when you are not using it. This is particularly important if you are not planning to drive Model 3 for several weeks. NOTE: When left idle and unplugged, your vehicle periodically uses energy from the Battery for system tests and recharging the low voltage battery when necessary
I had no idea about the 12V battery. I guess the wiring is 12V. I've dealt with those A23s, usually found in garage door openers. Here's a tip: often the drug store chains carry a wide assortment of specialty batteries, including the A23.
Hey there. Is there anything preventing a malicious person using that port to gain access to a Tesla owner's frunk? Also, I wonder if a vandal could spike a Tesla owners electrical system by hooking up a higher voltage source. Hopefully the wires are on a closed loop system to a solenoid and hopefully gaining access to the frunk doesn't allow access to the rest of the vehicle by any other means.
I wish I had answers to both your questions but I don't. For me, Teslas aren't that common where I live and I highly doubt that anyone would even know enough to try this. If I find out, I'll come back to this. Thanks for watching!
This trick won't work unless the 12V battery is really dead or you have your tesla card or phone key with you. IOW, a bad guy with only a 12v source can not unlock the frunk.
Notes to self. Purchase a A23 battery, they output 12 volts. Pop off the circle in the from bumper attach positive to positive side of the battery negative to negative end. Pop your frunk. Keep battery hidden on the car someplace
I haven't tried this myself but there are a number of videos stating that the 9V battery doesn't work anymore. I don't know if this is a software thing on the Tesla or if they changed the hardware along the way. I'll give it a try when I get a chance. Thanks for watching!
As a Vehicle recovery driver , please don’t more the wires, went out to one where the driver had moved them ,so you could not get to them unless the bonnet was open. ( which you can’t do without12v )
@@travelwithtesla there is a connection behide front bumper near to towing hole. If you lock yourself out or it run out of power. It’s possibly to jump the connection with a booster pack. ( it’s a know way to unlock car) some owner more them because of this which is fine until you are stuck at the roadside.
Excellent tip of the day …! Quick question … why you choose Model Y then Model 3 … can you throw some light on your decision that justifies to go with Y ?
I think you gave me a topic for another video. Almost bought a 3. Actually like the look of the 3 better. For me, went with the Y for a number of reasons. Cargo space. Higher seating position. Better ground clearance. Liked the blacked out look (the 3 still had chrome when I got my Y). I wanted the option to camp and thought the Y would be better and it is. Live in cold climate and wanted the heat pump (3 has this now). I'm sure there are more but I'll need to think on it. Thanks for watching!
Nice trick. What happens if I happen to have a 2021+ model when the 16V Lithium battery has been introduced? Would the 12 V battery help to pop my frunk?
Maybe, official guideline is to use a (ICE car used) jumper pack (yes it is also 12v). The lithium battery has BMS, it may goes into self protection mode before battery is dead. the MOS inside the battery "disconnect" the circuit that requires to reopen. So a dead lithium battery may not dead really and steps are needed to recover it. The service manual says 1) use jumper pack to try , if not helps then 2) disconnect lithium battery first, use jumper pack to start the car (depress brake pedal) and then reconnect lithium battery pack . The 2nd method is in the context of how to recover the "dead lithium battery", not how to open frunk, as to disconnect battery, the frunk must have been opened. The 3rd method, which is the same as the 2nd, in addition from control screen tool box 3, selection actions tab to choose LVBMS reconnect LV battery, click run to see it passes, and and depress pedal.
Super easy. Will probably post a UA-cam short as it takes only seconds. Pop the frunk. Grab the plastic cover above the frunk. Pull. Thanks for watching!
I think it would also be wise to put two 12 Volt connectors on these wires, to allow you to easily jump the car’s regular 12 Volt battery, which allows the car’s computer system to operate. Without it, your car won’t accept a charge from any source, Supercharger, or wall outlet. I ran out of power when I was inexperienced and had to be towed to a nearby Tesla Supercharger, only to discover that not only was the car’s larger primary Lithium battery bank dead, but also the standard 12 Volt battery was dead. This prevented the in-car computer from operating and therefore it couldn’t “handshake” with the Supercharger cable, to determine who is responsible for paying for the cost of the charge and couldn’t connect to the Supercharger to begin charging the car’s main Lithium power source that powers the drivetrain.
Great video. Speaking of Iowa, hope Okoboji gets some chargers installed someday soon. Even some J1772 or Destination. Go there every summer and think I'll have to stick to my gas car for now.
great video and tip. So what happens if i am in the car and the battery just die and I have no way to get out of my car with windows lock? If i cannot get out of the car, it's useless and also a safety hazard coz what if the car burst into flames and burn me alive?
There are hidden manual releases on the doors inside. The owners manual shows how to use them. It’s quite concerning that it would be nearly impossible to enter the car with an electrical failure. You’d have to break a window in an emergency.
@@tongmoviesThe manual releases are not even that hidden. I’ve had several passengers reach for them instead of pressing the button, and I have to coach them to press the button and not pull the release handle. It's a bit of a silly design, because other cars with frameless windows integrate the window lowering function into the main door release handle.
Thank you for the videos. I have ordered a model Y LR AWD because of what I learned from your videos. You will be getting the referral miles from my delivery in 2 weeks. Keep on sharing the knowledge!!
If you are ready to order your new Tesla, don't miss out on your free referral credits by using my referral link - www.tesla.com/referral/jim58610
Beautiful!!!!!!! Literally a life saver if it is cold outside!!
After getting a lot of feedback, I thought I would share some updates from what I have learned. It appears that the Tesla software won't let the frunk open unless the battery is either really dead OR you have your phone key with you and you wake up the screen - like when you open the door. Otherwise, the A23 battery will not work. This is good as it will prevent some random person from opening your car if you hide the batteries in the front. Thanks for all the great feedback!
Recommend deleting this video then replace it with updated information.
I was wondering about this… thanks again
If you are going to jump start it with 12V battery, why need a small battery to open the hook? just use the same jump start battery to open the hook. No?
@nzhong169 you can yes. The thought likely is that you would have a jumper pack in the frunk and use a 12v battery to gain access to it.
@@nzhong169 Hook? I assume you mean 'hood' but you said 'hook' twice.
Jim, this video is one of the many reasons why your channel is one of the best Tesla content channels. No time wasting 45 second intro, no overblown ego, just great tips and information. Thanks very much.
Wow. I appreciate that! Thanks for watching!
No time wasting 45 second? More like time wasted 2.5 minutes 🤣. I still appreciate the info but why not cut right to it
You don’t need this extra battery to open your frunk. If you are already going to jump your Tesla from another 12V source, you simply connect the jumper cables to those wire leads via jumper cables. That is the intended use, no additional battery needs to be stored on the vehicle
unless no other 12v is available.
So where IS your booster battery and jumper cables? In the Frunk? In the trunk? Surprise, you can't get to it! That's unless you pop the Frunk and jump the car's 12 battery. Then you can get your 12v booster and jumper cables to jump the car's 12v which allows you to unlock the whole car. So you do need the mini 12v battery.
That's unless you have a 12v booster source that's not stored in the car.
Yes, you can just attach the jumper cables to the above cables and open the frunk and then jumpstart the car.
@transDIVAlicous what above cables?
This great video was clearly made for me. I got me the adaptors, I got me the pucks, I got me the tire repair kit, I got me the compressor, I got me lotsa other stuff too. Now I'll have a battery hidden in that little tow slot thingy. Thanks so much.
A 9v battery works as well. I keep my 12v jumper unit in the Frunk so I can jump myself or anyone else. You are so right Jim! Us Tesla drivers are prepared.
M3 owner for three years and new sub. I knew about the possibility of being locked out by a dead battery but was unaware of this trick. Thanks!
Glad you found it helpful. Thanks for watching!
Wow dude I’ve owned my MYP for 30 months. I carry a portable jump starter never thought I could just keep a little old battery in the car. You are outstanding. I learned something from you. Thank you very very much.
Great, great idea. Much better than the larger 9 volt battery (which also has 2 outlets just ready to short out).
Small suggestion. Put a reminder in your phone to replace this A23 battery every 2 years. Insurance that costs $1.50 per year!
However, I would consider finding another, less obvious hiding location. Maybe behind the license plate, or inside the Model Y tow cover. I carry a little container on my keychain with some emergency pills, and it should fit in there, just put electrical tape over the contacts, to prevent shorting. And since the A23 is an alkaline battery, no restrictions on carrying it on airplanes, etc.
If you're going to get a jump start you don't need a battery at all. Just use the jumper leads of the battery that's going to jump start it. Also... the newer Tesla's have a 16v battery, not 12v. Jump starting will get you into your car but if that battery is dead it will need to be replaced.
After 9 months with my Tesla Y, I thought I knew everything about my baby, until I found your video! Informative and super helpful, heading to the store to buy that little battery to hide in that compartment in the bumper. Thank you!!
Glad it was helpful!
This is good information. But the thing that worries me is someone can use this trick to open up your frunk.
I was always told that the frunk was the safest place to lock valuables in a locked Tesla because it couldn't be opened from the outside without the car being unlocked.
This video makes it seem that anyone with one of those batteries and access to a Tesla can get into your frunk.
Thanks for the content.
This was a great tip. Thanks. However, in my x, if you look under the front of your car there are two panels. Underneath one of my panels is a frunk release lever, in case something happens and you can’t digitally open your trunk. I’m sure the other models have one, too. Something worth looking into. 😊
Model y 2022 does not have any type of release level must be jumped with wires and extra battery
On Thursday of this past week my A23-12 v battery that I use in my GTO transmitter to open my gate to my property died so I ordered two from the Home Depot. This morning I bumped into your UA-cam channel and I will place the second battery in the location you mentioned. Thank you for sharing and I agree that Tesla owners are.
Active. My next battery 12 v for the Tesla model 3 will be a lithium ion 12-volt. I just read your update on the dead 12-volt battery and since I do not use a cellphone to open the car door but the card key on the b-pillar I will have to do more research. I have read that the 12-volt that is lead that comes with a car is good for four and a half to five years, I will preorder a new 12 volt battery and place it in my garage and install it a half-year early as mine is now four and a half years old.
my battery went dead over the weekend. i ended up using jumper cables from my other car to touch those towhook wires and it popped open. then removed the terminal and trickle charge the battery. s
Thanks for organizing today’s Tesla Rally, traveling from West Des Moines, up to Ledgers State Park! I enjoyed the good company, beautiful scenery and great BBQ food!
Excellent tip Jim! Thank you. Waiting for my 23 Y expected late March. Just ordered the battery. Keep up the great work. Also ordered the tire repair kit you recommended.
You’re the only person I’ve seen mention this! Thank you!
That doesn’t happen often… Thanks!
to add, i keep a NOCO battery jumper pack in my frunk, so once its opened i have something to give power to the 12v battery!
My Son’s 2019 m3 had the battery warning pop up - he messaged Tesla service & they had him come over to the service center right away - $114 done & done - pretty cool indeed - I ordered the a23 batteries recommended here for emergency backup for my model y
Awesome advice about storing the backup battery behind the plug! Three years ago when I got my Model 3, anyone could open my frunk with a 9 volt battery, but with a software update, it won’t open unless the 12 volt battery is dead. There is some backup 12 volt power in the penthouse of the high voltage battery, that is why Tesla has you unplug the connector beneath the left side of the back seat. I know that this is way beyond the scope of this video, but I threw it in for those that are interested in more information ℹ️
All great info. I didn't want to get too complicated. If the batter is dead, this tip should work. Thanks for watching!
Thank you! dealing with a 12v battery issue now
This is ingenious! I had no idea. Question: could you not hook up jumper cables to the two small tow hook wires and get the same effect if you don’t have one of these little batteries?
Definitely we can. But that wouldn't sound smart and deserve a video
I couldn't get into my car and 12 volt was dead this did work if you open that cover and don't see wires just put your finger in there and feel around for the 2 wires once you find them I took electrical tape and taped my small batteries to the two wires so that it's there when I need it you will still need to Put jumper cables on that 12v battery but make sure ***WHEN You Do This the car your using is Not Running **** once you do that hook up jumper cables your car horn might start blowing just ignore that and check to see if you can open car doors via phone or key card u should be able to access the cabin if you need a new battery just remove the old there are videos on you tube that will show you the steps to remove battery and replace it it's not very hard just follow steps tesla service center has batteries for sale
I didn't get any Warning about my 12 volt battery being low and then I couldn't get into car at all lucky for me I was at home key card did not work or phone app I was locked out of car completely and car was dead
My baby got stuck in my car while the 12 volt died. I had to break my window to get her out. It’s actually pretty insane that this design flaw exist.
Awesome. Thanks for this tip on using the special battery to open the Frunk. Didn't realize they made that size 12v battery in the size of a AAA battery. I have a brand new Tesla model Y, so hopefully my vehicle 12V battery will be good for a while.
Thanks again and take care.
One thing to remember with the plug kits is that a plug alone is not condidered a proper repair. The speed rating is removed and the weight rating is reduced. Also, run flat tires are not considered repairable, so a rire that has been plugged must be replaced, along with the tire on the other side of the axle, as soon as possible. Run flat tires are limited as to speed and distance
Don’t worry about it. They last forever.
Why not just use the jump pack as the 12V source ? 🤷🏻♂
Thank you for posting this video. Your tip worked like a charm save myself probably thousands of dollars waiting for Tesla service to come unplug the car then for Tesla roadside to come tow the car pretty far away and then for Tesla to change the battery.
Very, very helpful video
Thats got to be the best tip I've ever gotten anywhere...ever. I would never have known that had I not come across your channel looking for how to get to my 12v in my Model S...glad I stopped to check it out!!!
O
Read the replies above because the software updates have changed it and this doesn’t always work! The battery Hass to be completely done now, which is a new precaution with the latest software.
I was about to say what everyone else is saying that you don't need the small battery if you are getting a jump from someone else. However, what I'm going to do it carry the small battery when possible and keep a booster battery in the frunk.
My wife carries an A23 battery in her purse when we travel outside our HOME area and local Service Center here in St Louis. I have a Plug Kit and Air Compressor. My Y will be 2 years old in July 2022, am thinking about doing a pre-emptive strike replacing the 12V battery BEFORE it fails. The recent cost for a Mobil Tech service call is about $125 to replace the 12V battery.
If you don’t happen to have the fancy 12 V battery, you should be able to MacGyver it with eight AA batteries. Just tape them in series (end-to-end), and 8 * 1.5V = 12V.
Absolutely correct! Just a little bulkier but will get the job done. Thanks for watching!
Yes. Any 12v source will do, including jumper cables from an ICE car.
A 9V battery also works.
@@Gyrobobb or even another Tesla 12 volt battery
I already have a 12V battery used for powering my Yamaha keyboard when playing outdoor. It last about 4 hours. Will make sure to carry it in my Tesla. The idea of 8 AA batteries connected in series is also a great one.
Oh yeah baby, I hit subscribe...I am researching, digesting, processing, learning, and enjoying the adventure as I prepare to move from my Hybrid into EV...Thank you for the video...
Good thing is now the car notifies u when 12v is low
When it does come time to replace the 12V battery, I would say, whether it is in warranty or not, spend the extra money and get the Ohmmu lithium ion 12V battery. This is actually standard on all Teslas (even the 3 and Y) as of 2022 (well not the Ohmmu one, but an official one).
It's not compatible, stop spreading misinformation
@erikandmarcie that's absolutely incorrect. I've had the Ohmmu Model 3 LiPo battery in my car for 2 years.
@@nathanc.4862 Yep...I've had one for 3 weeks now. I did have some initial issues, but they said it was due to an outdated firmware. Ohmmu support was extremely helpful and I haven't had any issues since.
@@StormsparkPegasus what were the initial issues, and how were they resolved?
@@lowfuel6089 The car giving replace 12V battery errors. With the new battery once they get the new app version out it will be possible to do over the air firmware updates, but that won't be until spring. So for now they have to swap the battery with one with a newer firmware. I have since had the error come up again and am currently working with their support.
Excellent and vital video for Tesla owners! Thank you for creating this video!
My jumper cables did not grab the tiny wires very good i had to put them on 12 volt battery terminal
Why do you want access to 12V battery? So that you can charge it or replace with another 12V. Both of those scenarios mean you already have 12V source and thanks to your great info, all needed to open that frunk. That little battery looks like a little waste.
I had the same thought, but I think the idea is that some people will want to store one of those 12V booster packs in the frunk, so the small battery gives you access to it. I can see this making sense if you're travelling far off the beaten path.
Presumably your Tesla will display a warning msg that your 12v battery is low on charge, don’t ignore the msg, immediately contact Tesla and make an appointment to take it to a service center or have a mobile service guy come to you. The battery will die not long after the warning is given so don’t delay in getting a new 12v battery. I’ve read that the lifespan is 3-4 yrs. As it gets to the 3 yr mark you may want to just get a new battery if you are planning a long trip.
That is a battery used for garage door openers. So if you found someone with a garage door opener in their car you could borrow the battery and do that. Also any place that sells garage door openers would probably have those batteries in stock. But the smart move would be to replace the Tesla 12 volt battery when you get the notice on the screen that it needs replacing.
My model S has manual releases. I'd be surprised if other models didn't also have them.
If you are going to jump or replace the battery just use that same 12v source to pop the frunk.
Maybe your pet is trapped inside and it's 100F. Gotta be prepared.
I had the same thought, but I think the idea is that some people will want to store one of those portable booster packs in the frunk, so the small battery gives you access to it. I can see this making sense if you're travelling far off the beaten path.
Did you show, then, how to get at the dead 12V?🌿
is that a free hack to help someone to steal my holiday shopping 🛍️ gifts from my model-y frunk? I hope Tesla has some software safeguards for this
Your videos are really informative. Love it.
Super helpful!!!! thanks for posting it
Thank you for another fantastic video! I am awaiting the arrival of my 2023 MY LR (due between 2/21-3/21). My hallway is filled with deliveries for the MY, from floor pads , screen cover, tire compressor…Tesla card case! Now, I will be ordering the batteries you recommended.
23 models should have 16v batteries
Newer Teslas have a 16 volt battery, wonder if that little 12v battery would still work.
Excellent information. The representative told me when I picked up my 2023 Model 3, that it did have the new 12 volt ion battery. What actually charges the 12 volt battery? I keep the car plugged in. I'm not a daily driver.Thanks.
If you have a newer car with the lithium low-voltage battery, then it's not actually 12 volts anymore; I think it's 16. To answer your question, the low-voltage battery is charged from the high-voltage battery using a DC-DC converter. In normal operation you don't need to do anything to keep the low-voltage battery charged. However, it is recommended that you keep the car plugged in, because the car periodically wakes up to run system tests, charge the low voltage battery, etc., and if you're plugged in to the wall, it will use AC power for these things instead of depleting the high-voltage/traction battery.
Look for this in your manual:
About the High Voltage Battery
Model 3 has one of the most sophisticated battery systems in the world. The most important way to preserve the high voltage Battery is to LEAVE YOUR VEHICLE PLUGGED IN when you are not using it. This is particularly important if you are not planning to drive Model 3 for several weeks.
NOTE: When left idle and unplugged, your vehicle periodically uses energy from the Battery for system tests and recharging the low voltage battery when necessary
If you are getting jumped could you use the end of the jumper cables hooked to the other cars battery terminal to pop your frunk?
Yes. This this would work too.
On Xmas Day we got stuck. 12V battery died. Locked out. No warning. Now carrying a 23A battery in front bumper cover.
What do you do with the battery? It allows the frunk to open when the powers shutoff?
Can you hook a jump pack or cables to those wires to pop it?
Yes
Have your 12v battery tested when you do your annual maintenance. The onboard diagnostics seem to notify you too late.
I had no idea about the 12V battery. I guess the wiring is 12V. I've dealt with those A23s, usually found in garage door openers. Here's a tip: often the drug store chains carry a wide assortment of specialty batteries, including the A23.
Should have hidden manual lever to open frunk. Good tip to correct an engineering mistake.
THIS WORKED!! Thanks!!!
How much amper the car use in the 12v? What min amper lithium or lifepo4 battery i need to tesla car?
Hey there. Is there anything preventing a malicious person using that port to gain access to a Tesla owner's frunk? Also, I wonder if a vandal could spike a Tesla owners electrical system by hooking up a higher voltage source.
Hopefully the wires are on a closed loop system to a solenoid and hopefully gaining access to the frunk doesn't allow access to the rest of the vehicle by any other means.
I wish I had answers to both your questions but I don't. For me, Teslas aren't that common where I live and I highly doubt that anyone would even know enough to try this. If I find out, I'll come back to this. Thanks for watching!
This trick won't work unless the 12V battery is really dead or you have your tesla card or phone key with you. IOW, a bad guy with only a 12v source can not unlock the frunk.
Could this battery also let you open the doors?
Great tip and I love the storage spot idea! I’ll be doing this to our Y. 👍
Thanks Brian. It's a cheap insurance policy for the battery. Hopefully set and forget.
Notes to self. Purchase a A23 battery, they output 12 volts. Pop off the circle in the from bumper attach positive to positive side of the battery negative to negative end. Pop your frunk. Keep battery hidden on the car someplace
A common household 9V battery also works fine. Put it in the same place on a small ziplock bag. Thanks and I love your videos!
I haven't tried this myself but there are a number of videos stating that the 9V battery doesn't work anymore. I don't know if this is a software thing on the Tesla or if they changed the hardware along the way. I'll give it a try when I get a chance. Thanks for watching!
Great tip and great channel!!! Thanks Iowa Tesla Guy!
A standard 9v battery worked for me to open the frunk
Awesome tip. Thanks Jim.
Glad you found it helpful. Thanks for watching!
As a Vehicle recovery driver , please don’t more the wires, went out to one where the driver had moved them ,so you could not get to them unless the bonnet was open. ( which you can’t do without12v )
What do you mean?
Don't let the poles touch? 🫤
@@travelwithtesla there is a connection behide front bumper near to towing hole. If you lock yourself out or it run out of power. It’s possibly to jump the connection with a booster pack. ( it’s a know way to unlock car) some owner more them because of this which is fine until you are stuck at the roadside.
thank you Jim, awesome tip.
stuck between model y performance and long range... thoughts?
Excellent tip of the day …! Quick question … why you choose Model Y then Model 3 … can you throw some light on your decision that justifies to go with Y ?
I think you gave me a topic for another video. Almost bought a 3. Actually like the look of the 3 better. For me, went with the Y for a number of reasons. Cargo space. Higher seating position. Better ground clearance. Liked the blacked out look (the 3 still had chrome when I got my Y). I wanted the option to camp and thought the Y would be better and it is. Live in cold climate and wanted the heat pump (3 has this now). I'm sure there are more but I'll need to think on it. Thanks for watching!
Nice trick. What happens if I happen to have a 2021+ model when the 16V Lithium battery has been introduced? Would the 12 V battery help to pop my frunk?
Maybe, official guideline is to use a (ICE car used) jumper pack (yes it is also 12v).
The lithium battery has BMS, it may goes into self protection mode before battery is dead. the MOS inside the battery "disconnect" the circuit that requires to reopen. So a dead lithium battery may not dead really and steps are needed to recover it.
The service manual says 1) use jumper pack to try , if not helps then 2) disconnect lithium battery first, use jumper pack to start the car (depress brake pedal) and then reconnect lithium battery pack . The 2nd method is in the context of how to recover the "dead lithium battery", not how to open frunk, as to disconnect battery, the frunk must have been opened.
The 3rd method, which is the same as the 2nd, in addition from control screen tool box 3, selection actions tab to choose LVBMS reconnect LV battery, click run to see it passes, and and depress pedal.
Dumb question but what stops John Doe from doing that to my Tesla when it's parked and taking whatever's in the frunk?
Probably in the Owner's manual, but worth special mention. Thanks.
I'm sure it is. I probably need to go back and read the fine print. Thanks for watching!
Yes, it’s in there.
Is this same on Tesla model x 2017?
Frunk can be opened by a regular 9V battery as well. Test it
How to on an early Model S with a round nose?
Excellent Tip. Thanks for posting.
Glad it was helpful!
wow, so do not store anything in the frunk...Thanks for the info
Is there not a warning on the screen that the 12v battery is failing and needs replacing long before it goes flat.
Can you make a video on how to get to the battery.
Super easy. Will probably post a UA-cam short as it takes only seconds. Pop the frunk. Grab the plastic cover above the frunk. Pull. Thanks for watching!
I wonder if this will work for the newer Model Y that is 16V not 12V?
Interesting video. BTW, you are not supposed to hold the battery as you did.
why cant i use the jumper cable to pop the frunk? is that not much simpler
Can I use booster cable attached to the 12v battery of any ICE car for this purpose?
Nice video! 👍 Which spare tyre and jack are recommended for the Tesla Model Y?
⚡Or you can just connect the jumper cables from another vehicle to the wires to open the trunk.
simply Genius. Thank you Sir.
I think it would also be wise to put two 12 Volt connectors on these wires, to allow you to easily jump the car’s regular 12 Volt battery, which allows the car’s computer system to operate. Without it, your car won’t accept a charge from any source, Supercharger, or wall outlet. I ran out of power when I was inexperienced and had to be towed to a nearby Tesla Supercharger, only to discover that not only was the car’s larger primary Lithium battery bank dead, but also the standard 12 Volt battery was dead. This prevented the in-car computer from operating and therefore it couldn’t “handshake” with the Supercharger cable, to determine who is responsible for paying for the cost of the charge and couldn’t connect to the Supercharger to begin charging the car’s main Lithium power source that powers the drivetrain.
Cant you just use the jump start cable that is connected to the other car to the wires in the front bumper to open the frunk?
Yes. I would think so. Just one less step needed I guess.
Thanks for a great little tip. I hope I never need to use it, but ….
Great video. Speaking of Iowa, hope Okoboji gets some chargers installed someday soon. Even some J1772 or Destination. Go there every summer and think I'll have to stick to my gas car for now.
There are a lot of places that could use more charging in Iowa. Thanks for watching!
great video and tip. So what happens if i am in the car and the battery just die and I have no way to get out of my car with windows lock? If i cannot get out of the car, it's useless and also a safety hazard coz what if the car burst into flames and burn me alive?
There are hidden manual releases on the doors inside. The owners manual shows how to use them. It’s quite concerning that it would be nearly impossible to enter the car with an electrical failure. You’d have to break a window in an emergency.
@@tongmoviesThe manual releases are not even that hidden. I’ve had several passengers reach for them instead of pressing the button, and I have to coach them to press the button and not pull the release handle. It's a bit of a silly design, because other cars with frameless windows integrate the window lowering function into the main door release handle.
best tip yet...peace
Where do you put your A23 battery? Do you hide it somewhere on the outside of your vehicle?
He shows this in the video.
WOW, Extremely interesting. Thank you.
Thanks much, 9 volt battery did it for me
So, I get in the frunk. I still can't drive it. If I'm getting a jump, I don't need the battery because I'll just use the jumper cables.
Thank you for the videos. I have ordered a model Y LR AWD because of what I learned from your videos. You will be getting the referral miles from my delivery in 2 weeks. Keep on sharing the knowledge!!
Thank you. Thank you! You will love your Model Y. I'm certain of it! Thanks for watching and thanks for the miles!
Can I use the miniature A23 btry?