Toyota Prius -Tip on how to start it with a dead 12V battery without JumpStart
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- Опубліковано 10 лют 2025
- Toyota Prius -
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Tip on how to start it with a dead 12V battery without JumpStart - Навчання та стиль
Worked! You are a HERO. It clarified me on engine start and saved my day.
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@@HowToDoitright is it ok if I always start my 2014 Prius that way, after that noise stops??
@@terrytorres7075 you can but eventually your battery will die in a few months and you will be stranded and this trick won’t work anymore.
This trick worked for me!! Thanks my man!
Worked for me on my 2012 Aqua/Prius C
This video saved me today. 4 years later and it’s still helping people. Thank you so much!
"Press on the pedal and wait 20 seconds" You saved me with your trick. Many, many thanks for posting!
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
I tried what you said as a last ditch effort. My car would not start and was giving an error message " Low 12-Volt Battery" It worked! Kuddos to you! I did NOT miss a day of work AND I did not have to pay for a tow. Thanks!
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Wish I knew this trick when the first 12v battery in my wife's 2010 Prius died in 2017 leaving me stranded 70 miles from home. The replacement battery has been acting up recently and finally quite this morning. After seeing this, I went out and tried it. It worked. Thanks!
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THANK YOU. You just saved my life. I'm sitting in the emergency parking lot waiting for my husband to come out and I need to get him home. I can't believe this worked I was so scared. Thank you
Hope y’all are good
It worked!! Haven’t moved the car in 4 days in freezing temperatures and thought I was screwed. Thanks man saved me tons of money and time.
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
Honestly this man is a life saver! I was stressed out stranded when my battery went flat not knowing what to do. I watched this video out of luck and I tested it and worked immediately! Truly a hero! 😂
Glad it helped bro
THANK YOU SO MUCH! I have a 2006 model Prius and assumed this would only work on newer models but I just listened carefully, held the brake until it was silent and pressed the start button and she was back running like normal! You are an absolute lifesaver! ❤❤❤
Thank you thank you! It is 11pm and no nearby towing shop is open. I found your video, which saves me money and headeach in a cold evening! ❤
Love seeing comments like this. I’m so happy that my video helped you.
Glad it helped. Please like and subscribe as it helps my channel support charity and yes you can support it too by donating to PayPal id: Dewana421@aol.com. No amount is small :)
I have never left a comment in my entire life. Thank you for this. Just got me to work
Glad it helped you go to work :) made my day. Please like and subscribe as it helps my channel supporting charity :)
Thank you. I assumed that the small 12v battery was used for starting the engine, as in all of my prior non-hybrid cars. This was an excellent tip.!! 👍
Thanks. Glad it helped
Absolute life saver and good general knowledge to learn! Was adjusting my headlights and was farting around for too long and thought I screwed myself haha!
Brilliant! It works, and this is buying me a few days to get a battery. You're a saint for posting this! Thanks.
Thanks. Learned it from my experience so wanted to share to help others. Sold the car now for a Tesla. Let’s see how this one holds.
I just instinctively did this on my Prius v. Having a long drive ahead, it is good to confirm that I could still get by and be able to replace or recharge it some time after the drive.
Thanks for the video. It clarified a no-start issue for my 2010 Prius!👍 I don't know why you don't have any likes. You have my like brother! Jazak Allah!
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
Life saver of a video... Thanks dear, thanks a lot. I could help my wife over the phone while sitting on my computer thanks to this video. 😀
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
Have to thank you for this it’s 4am and I was stuck at work and this saved me
This is for prius models only or for all Toyota hybrids?
Super, I have to jump start my Prius almost everytime I go out, due to working from home. Inwas told to buy trickle charger by my dealership, but I don’t have outlet as car is in apartment’s parking lot. This is super really helpful, plus never heard this before. 😬😀
Thanks but change your battery. This only works temp. Eventually your battery will die
Just bought a new battery at KOI auto parts for $158.80 not too bad.
Great info good job. I think I accidentally figured this out in my panicked frustration..
That’s a good price on battery.
Thank u so so so much ur video really help me at the very late night my car battery been law and I had no me to come to help but ur video sort it out for me . Thanks a lot may God bless u
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You absolute legend!!! Thanks so much! Love from Sri Lanka
Glad it helped
Thank you so much bro I was stuck in a parking lot 😁
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
Me too!!!
Thank you! Hopefully this will get me by until I can replace the 12V battery in my Prius.
Yes but change it quick because this won’t keep working like this and you will get stranded. This is a temp solution
@@HowToDoitright Already replaced it
Not all heroes wear capes. You’re a lifesaver
Thank you brother for your help I have enough information now about 12 v small battery, before one hour my car system light gives me warning for the battery, Thank you from Seattle Washington
Salaam. No brother.
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
Which battery needs to change if that the issue, thanks for your video 🙂
12v located in your trunk right side pannel
Go to Toyota Dealer to buy the battery, its warranty is 7 years at least pro-rated of course....but it should be the same 12v battery originally installed in the Prius and the price is cheaper than other brand ,,,just go to Toyota dealer,,,it is cheaper!
Thank you. It work for 2020 Prius.
Thank you my man you save me whole night bless you
Glad I could help. You can send me super thanks via link in bottom of video to support my channel :)
THANK YOU SO MUCH... I don't know what Toyota was thinking when they programmed this... 😓 You saved me
Saved my life at mid night . Thanks for your video
Imma have to try this at night - my infotainment screen is trash and invisible during the day 😆. Sounds like I have the exact same problem (it began after some heavy rain for three days nonstop so you may be on to something). Thanks in advance!
Thanks for the useful video. Does that trick also help Prius 4 gen. My 12 v battery goes flat if I don't use the car for 5 days. Greetings from Germany
Thank you so much for this video! I wouldn't have been able to start my car without it
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
I HAVE been having this trouble about every other morning. after work it is fine, but in the morning esp. it it is a little chilly out i spend about 5 min cycling through. i never thought to just wait and let the battery recover from the pump draining it. i will give this a try in the morning.
I’m sure it will work but you will need a new battery eventually
You saved my butt today with this video! Thank you for posting it!
Thank you this worked after trickle charging my totally dead battery for only an hour.
Hahaha, worked like a charm
Yesterday it didn't start as usual...today i tried waiting for the sound to go away and it started
ThANKS FOR THIS useful TIP!
Glad it was helpful!
Thanks!!!! Your video saved my day :)
Glad it helped!
I came in here because I want to help someone who has the same problem as mine. Just recently my 2008 Prius went completely dead even after changing to a new battery. There was no life, nothing at all. I had to ask my friends to give me a jump. After watching many UA-cam videos I found out that one of my fuse was gone. When you open the fuse box, at the right under C section, there are two blue no.15 fuses. I changed the second one from the top. After that I also had to tighten up my negative volt battery which is in the trunk attached to the back of the car. Make sure you unscrew the negative volt before putting on the new fuse. After that it came to life. Hope it helps someone.
It worked! Thank you. My son and I were hanging out in the car and the battery died quick. This trick worked thank goodness
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For the title of the video, I would call it "how to start it with a LOW 12v battery" because this doesn't work at all with a battery that is actually dead.
Yeah agreed. Good point.
@@HowToDoitright so rename your video to be more accurate then.
Dead battery here. Dude wants more views.
Exactly!!! Finally someone smart enough here but if you actually read other comments it helped a lot of stranded people so I’m glad it helped people as is :)
@@PaulKitching11 People are way more likely to search dead battery than low battery, regardless of whether it's actually dead. More views means more people getting their car started. It didn't work for me, my battery is too low, but it's helped alot of people.
It works for me too! Perfect, you are a hero!
Glad it helped. Please like and subscribe as it helps my channel support charity and yes you can support it too by donating to PayPal id: Dewana421@aol.com. No amount is small :)
Will that work on a 2018 prius?
thanks for the tip. You reference another video around 2:42 about how you replaced the battery for cheap, it says "link in description"... but I do not see a link in the description??
I added the link in there now. Sorry about that
@@HowToDoitright thanks. I just now replaced my original 12v battery after a decade. I tried price shopping for a new battery but they were all over 200 (including this AC Delco) so I ended up just going to AutoZone
Yes prices have increased so much. I think I paid like 60bucks for mine.
Thank you for posting. This saved me this morning from a 4 hour wait for a tow & I was able to get to work on time.
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
I recently had this happen when I was at a hardware lumber yard cutting some wood I needed. I left my blinkers on not realizing that that is actually being powered by the actual 12 volt battery and apparently I can drain it pretty quickly if you leave them on for too long. But I thought maybe if I just shut off the car for a while completely maybe the hybrid battery would trickle charge the 12 volt battery? I mean I have a 2018. Not really sure how the whole system works but it was the only thing I could think to do. Only had the car for a few weeks now and surprisingly I was able to get it to start again. Plus the hybrid battery was nearly full so even increased my mileage a bit poking through the rest of the lumber yard back to the entrance. I know this thing has a little over 100,000 mi on it and I know the car doesn't use a alternator so maybe I also need a new 12 volt battery. But I wonder would this car support something like one of those like car starter systems that you can plug into the 12 volt adapter just to give it enough to start the regular thing?
Yes you can use Jump start to start this car. This car needs less juice (CCA) to start as compared to other car.
Your car does have an alternator. The only cars which are fully electric don’t have alternators and main battery charges the small battery
Got to say, Toyota could have designed it to allow using the high voltage battery to charge the little one, in an emergency.
Good point but The High voltage battery is way too small for that task. It’s not an electric car. It’s a hybrid.
@@HowToDoitright It is not too small, it holds over 1kWh while the 12V battery is around 0.36kWh.
Still small as compared to a real electric EV
Thanks man 👨 🙏 it actually works
That's actually work. Thank you so much
Press on what paddle?
So press on the brakes, when the sound goes away, press start?
@@Bridget_S yes correct
@@HowToDoitright thanks!
Did work for me...thanks alot
Glad it helped. Please like and subscribe as it helps my channel supporting charity :)
Man, that worked. Thanks
Hahahahahaha it worked!!!! You my friend are a legend!
Thank you! It worked!
Glad it helped!
You saved my life
Thank you! It worked! My question is now: Do I have to do it everytime when I start my car untill I replace the battery or the battery gets charged after running for a while?
Yes every time. It will eventually die. This is a temp method
You’re a boss dude thank you
Thank you!!! This happened a few weeks ago and I forgot what I did to get started. So do I need to replace a battery?
Yes new 12v battery
@@HowToDoitrightThanks! Do you have a video on how to replace it?
This helps get passed the load draw, so it may have enough power to start afterwards.
Exactly!
When my car wouldn't start, the steering wheel felt stuck and the brake pedal was a lot harder to press down on. Did this happen with yours too?
I don’t remember that. It’s possible. But if you car starts with this trick and then drives normal that means it’s the 12v battery problem. But if the problem stays after starting then it’s something else
You totally saved me! Twice. Thank you!
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Thanks a lot. Its so helpful.
so i have a question because earlier tonight me my niece and my brother were at the drive in theater seeing clifford we accidently left on the head lights which drained the 12v battery i noticed this when i saw the computer screen flickering at this point my brother tried to start the car it would not start so he called aaa for assistance and while we were waiting we turned everything off in the car and took out the keys we sat for like 15 20 minutes then my brother and niece had to go to the restroom as they were on there way i git in the driver seat with the keys and was suddenly able to start my car i am assuming that while everything was off the high voltage battery gave the 12v battery a jump and thats why i was able to start my car in this event do i still need to replace the 12v or is it fine once the car starts and it gets charged and also the battery meter on the computer screen is that not for the high voltage battery and not the 12v please let me know if my assumption's are correct and if i need to replace my 12v battery thanks and also about the battery meter on the screen
I don't believe the HV battery can charge the 12v battery when the car is off.
More likely when you switched off the headlights, the 12v battery was able to recover some voltage. This can be enough for the computer to boot up and at that point it probably is recharging the 12 v from the HV battery.
In the manual of my gen 3 2010 Prius page 539, there is an emergency procedure for starting the car when the 12v battery is low and will not go into Ready mode.
I discovered this one day while waiting for the AAA guy to come and jump my Prius. Virtually no one reads the manual, so almost no one knows about this.
I posted this separately above.
Where do you put the key in the ignition
thanks i needed to take my car to get the new battery installed !
Glad it helped
@@HowToDoitright i think it might he the hybrid but i changed the 12v anyway so helped
Thanks for the help 👍
Ahha! Wifes Prius just had the same problem.. On the way to replace the regular battery..
Will it work for the 2002 Prius?
All Prius
Thanks a ton for this! Worked perfectly for me.
Thanks Mate it's safe my Day.
Thank! for sharing your detailed video on defining a Low 12v battery. it really helpful to me. But have one question? Which 12v batteries are referred to? It is the front of the hook or the BACK of the left Hatch trunk?
there is only one 12v battery. rear passenger side in trunk. the other battery is the hybrid battery which is considered a high voltage battery and no you don’t need to replace that.
Do you know how much is the 12v battery?
Around 200-250
Thanks a lot . it works for my prius 2012.
Wow...very useful information!
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How can U tell the voltage left on your battery?
The only way to tell that is to measure it with a volt meter at the battery in the rear passenger side. But if no lights are coming on then it’s fully dead and this technique won’t work.
How much was the battery? And its 12v battery right? Not the hybrid?
Yes. Battery was around 120
@@HowToDoitright how is that expensive, i
Literally paid 280 yesterday for my 2007 prius. Cuz they said i need the pacific battery for the smart key to work.
Will this work for my 2007 Prius?
Yes it will.
Legendary! Worked!
is it the battery that is under the hood? Mine is too dead. Not sure why haven't left anything on and I drive everyday
There is no battery under the hood.
There is on 2018 and newer Prius.
Works 100%! TY
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For me it hasn’t worked today. There are actually no lights on the dash turning on, neither will the door locks work with the key and the inside lights don’t turn on. I didn’t have any previous warning of the battery dying. I wonder if it’s really the battery. Would The lights inside the car and the doors lock with the key if it wasn’t the battery?
Yes if it’s completely dead this won’t work as it says in description
Thank you so much! You saved my vacation!!!
Totally helped. Thank you so much!
What about when the car shows absolutely NO sign of life? I bought a battery charger from Amazon, tried charging mode, tried repair mode, actually got the volts up to 12.5 and the battery charge level was going up finally after the "repair" mode but it's still not doing jack when I put it in and try to start. I only get a red light on the keyfabs when I press, that's the only reaction I can get from it. Even the electronic door locks aren't working. I'm just hoping it has nothing to do with my hybrid battery, just the front one it seems. But I did replace the big battery a couple years ago, and my daughter left the back light on last time before it died. So there's a brief history on it! Any ideas?
Take the battery to auto zone. They will test for free by putting a load. You can also do a test by jumpering the car to another car and leave the other car on with cables connected. Wait about 10-15mins and see if your car starts. Both car needs to be on.
Seriously save my butt! This worked! Thank you so much! 🙏
Jazāk Allāhu Khayran (جَزَاكَ ٱللَّٰهُ خَيْرًا, jazāka -llāhu khayran) "May Allah reward you [with] goodness."
Waiyakum. Thanks brother
Great information thanks 🤲
Today I changed my 2009 touring prius passenger mirror and when I was done my prius was dead, did not wanna start.
Don't know if battery drained while door was open but car was working fine before and during installation.
I wonder if a cable became loose on door and that is preventing it from turning on which does not make any sense?
marco lopez it’s an indication your battery is getting weak and needs replacement. Just charge it and see if it works
I will charge it tomorrow to see if it works. I have only driven car a couple of times since March. Is just been sitting in driveway the whole time. Don't know if this could be part of problem too? Anyways I will charge it tomorrow. Hopefully it works:)
Iam charging it right now. Right when I connected the jump starter portable unit all lights came on. Tried to started but no luck yet. The portable charger says battery is at 25%, so I guess I have to wait a while. Can I start car while charging or I have to disconnect cables first?
I tried this with my 2006 Prius when the battery was COMPLETELY dead, no lights, no dash functions. Holding the brake pedal down caused no pumping sound. I attempted it with several wait times, 20 seconds, 45 seconds, etc, nothing happened. So, I guess this video only applies if you have a marginal 12V battery. I was able to jump the car from another battery and get it going, but that was the only way.
Yes of course this is not for a dead battery. This method doesn’t generate electricity but reserve whatever juice is left in battery to start the car. If it’s completely dead you will need to charge it
Thank you- works on Lexus too.
I will try this to get my car to a store that sells new 12 volts.
Thank you so much, oh my God this video just saved me!
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@@HowToDoitright absolutely!
You are a FUCKING GENIUS!!!! Worked with my 2017 Prius (12V battery almost dead) at the first attempt
Regards from Cancún !
Glad it helped
Almost nobody is aware that the Toyota engineers made a special procedure to force the HV battery to recharge an over discharged 12v battery that is unable to start the car but can still boot the computer, and go into accessory mode.
This is what they say on page 539 of my 2010 Prius user's manual:
"
(Section:) Steps to take in an emergency
(Sub-Topic: ) Emergency start function
When the hybrid system does not start, the following steps can be used as an interim measure to start the hybrid system if the “POWER” switch is functioning normally.
[Step 1] Set the parking brake.
[Step 2] Set the “POWER” switch to the ACCESSORY mode.
[Step 3] Push and hold the “POWER” switch for about 15 seconds while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the system may be malfunctioning. Have the vehicle checked by your Toyota dealer.
"
The key takeaway here is that this procedure is done in ACCESSORY mode, not
start mode.
This is different from the procedure in this video which takes place in START mode. It is possible that while waiting in the HV battery will charge the 12V battery. One could check this with a volt meter across the 12v battery.
I took this excerpt from the official user manual:
assets.sia.toyota.com/publications/en/om-s/OM47668U/pdf/OM47668U.pdf (p. 549)
I discovered this when my car wouldn't start and I had time to read my manual while waiting for the AAA guy to come and jump start me. I was able to start the car before he came without the jump start and I save a AAA call.
You saved my day, thanks
Nice to know thanks 👍🏻
Does this apply to a 2014 Prius? Thank you in advance
Yes it does
What about a 2004
Same
@@HowToDoitright I tried to do it and it didn’t work