I just went through this and can say it works just fine. I did have a couple of snags though that i want to share with viewers. 1- Yes, the replacement battery had longer leads which I cut short but still the battery was not perfectly flush on the board like the original and hence the two halves of the shell did not come together perfectly. For that, you can use the blade to shave off the three little prong-like pieces in the cover where the battery sits and that will take care of it. 2- The lock/unlock function worked right away as I tested it before gluing the two halves back together however the fob would not click into the slot in the dash or operate the ignition. It's nothing to do with the shell. The reason was, which is what I want to highlight here, that the one chip on the board (top of the battery side) was not connected on the one end. The solder broke. Took me some time to finally figure it out. Once I welded it back all was good. Notes: you don't need much Super glue so don't apply directly from bottle but rather use a small screw driver to apply to the edges of the shell of the fob. When the fob didn't work in the slot I thought I ruined it so I bought a shell from Amazon. That didn't work either till I fixed the loose chip. Apart from not having the BMW logo that Amazon shell looks great and is very good quality. If you are careful splitting the OEM fob and gluing it back you should be just fine.
@@antoniagladden8501you mean the issue of the remote locking and unlocking the doors but the FOB not clicking in the slot and hence not starting the car? If so, the problem is that the long black chip you see at 6:21 (above the battery) is loose, or not soldered properly. Make sure to solder it back and you'll be back in business. Don't use too much solder that you make unwanted contacts. If you do then the lock/unlock function will stop working. Hope this helps.
@@marwanazzam4160thank you so much ! I am skeptical about doing it myself. I bought the battery online and then lost it. Opening the plastic key was quite a challenge and I have never done sth like this before. I thought losing the battery was a sign 😅… I bought it again online and will give myself a chance. Hope I don’t mess it up
@@kungpug5406 It recharges when it is inserted in your car ignition slot (apparently). After some 10 years, it may stop recharging, in which case there seems to be no other solutions than to break the key in half, which I am too scare to do. So overall I agree, it is smart that it recharges in the ignition slot, but still they could have made it easier to open.
I used a heat gun and gave the edges a quick pass on low setting, and it made the cutting part simpler for me. I didn't destroy my original fob case either :) Thanks for posting this!
Thanks. I was a little apprehensive about cutting with a blade but I worked it gently and slowly and eventually it came apart and the battery is now off. Greatly appreciated.
Nice clear video for replacing the battery on my 2011 328i. Thanks. The legs on the replacement battery were a bit long, just snipped them off after finished sodering.
Thank you very much mate 🙏🏼 Just managed to do mine today! The battery went kaput after 18 yrs of use of the Car ( it was a spare battery, seldom used). Test driven the car w the new key, OK 👌🏼 To Cut it out is especially difficult, its hard plastic, need sharp cutters, careful w fingers ! The L cover of the antenna, a small piece fell off. I seldom solder, so this is a rare skill for me, and I dont have the sucking pump, so its dangerous in case the solder melts into other nearby circuits. I bought the battery online ( cheap, RM30/-) BUT it had different legs, not the winding G ones but straight down, but Winged, so it wont fully fit into the hole ! So i need to shave some plastics inside, otherwise the cover wont close tight fit. Lastly, i would glue back the two parts using 2 part epoxy and the L piece back. All the time I was Cursing, Who was the Bloody Stupid BMW Engineer who made our lives Miserable by owning the car. Why did they make the key Fob Sealed ? Bloody Idiots. I have several other cars, they always have openable part to replace the battery.
Instructions here worked out great for me. I have no experience soldering, and replaced the batteries on both my key fobs. I recommend getting a new case instead of reusing the old one.
@@cmfo801 The battery recharges itself when you're driving. If the fob is seldom used, and the battery dies, it will need a several hr. trip to recharge. It worked on my 2011 BMW. Hopefully it will work for you.
used my spare recently on a 2006 e90. immediately low battery warning on the car. but after using it for a few days that's fine now.. so yeah it just needed to have recharge time since this spare was never used.
@@mhks68 Yeah the BMW battery management system definitely works. Back in 2018 I bought a 2005 E61. The battery was the original, dated 05 on the terminal - lasted 13 years.
As long as you use the original circuit board, the transmitter will still be synced up with the immobilizer. It never stops in fact. You can use the key with the battery removed as the transmitter is picked up by the car itself rather than the transmitter on key fob needing to send any signal to the cars immobilizer.
Thanks for this video; it's very helpful. ...and this is why the last new car I bought was NOT a BMW. It's a whole new level of aholeyness to require solder for a battery replacement. (I just replaced the battery on my 2020 acura. It took 3 minutes. It's a $1 battery.)
cool to this point, it would have been complete with showing that it starts your car and also explain if the battery already has a charge or do you have to leave it in the car for initial charging.
Was the remote control still working properly after replacing the battery? There were no problems with starting the car or opening the door from the remote control? I heard that when replacing the battery in the BMW remote control, you should provide an external power supply so as not to decode and unprogram the remote.
So bmw starts sometime but not always but once it's started I can start agian over and over for awhile but if I don't start it agian for while it won't start. With the battier in the key fob not alow the car to start then? So if I change the battier the car will start everytime them?
After changing the battery I am no longer able to lock and unlock my BMW 1 series using the key fob. Car starts however if I place the fob into the dash. Any idea what to do?
I have an 2009 bmw 328i, battery is dead waiting for new one to come but does anyone have a problem where when you take out the key all the windows roll down because it keeps happening in my car?
I did this but my unlock button no longer works, locks and trunk opens just just fine. I must have gotten some solder where I shouldn’t have or something :/
Hi I did all this but the keyfob still does not unlock or lock my vehicle. Its a 2008 bmw x5. Any help? Any specific fuse I should check? Maybe the battery isn’t getting any charge. Any help is appreciated.
Im ordering another battery just in case my replacement was bad. Il let you know. Could be the antenna in the trunk? Maybe a faulty keyfob? Unfortunately i only have 1 keyfob no spare.
@@danzgarage843 I noticed if I quickly tap the unlock and lock buttons it sometimes works. So it might be a faulty keyfob. I dont get the low battery error.
A component has gone bad for me. Can someone tell me which component is between the battery and the transponder? Just above the quartz, in the middle of the board. Just need to know what it says.
my key randomly stopped working, it doesn’t unlock anything, even putting it in the car no lights will come on, but the car itself, the hazards will come on n the separate key to put in the door works, and the buttons inside the car. so i opened the key and the circuit board smells burnt and actually is browning… my trunk button is sunken in and brown at the back. i didn’t drop it so idek what’s happening
Thanks for this. I managed to change the battery for my E92. I found the 'legs' of the new battery slightly too long to fit inside the battery compartment. This resulted in the fit being bad. So, I've got to unsolder it, somehow trim the legs and re--attach. Hope this helps someone.
on 2011 328i - will you get a warning to replace these batteries.? I don't problem when too close the car, but doesn't work from far., could this battery or something else.? What is an acceptable range for 2011 328i for key fob to work from ..? 12-15 fts or about 25 fts and more.?
Well, they actually are indeed very high tech both with the recharging, the vehicle data recording on the key and the security of the design. There were only ever 10 security chips made for each and every BMW when it was manufactured. You get 2 with the car and the remaining 8 are available to order if you lose or break one. That's why they are near on impossible to duplicate or crack. I bought a car, needed a 2nd key and the local dealer looked the car up and said there were 6 left. The previous owner must've lost a couple. Now there are 5.
The biggest bullcrap invention ever to take your car for service and even to replace on from dealer they want over $250 here in Canada. And it's not a normal battery replacement. My mom towed her car for this crap too.
How does it get charged? Would it be the charging mechanism not working? If so, a new fob will soon die. When a key has been sitting for too long, it will get discharged. Would recharging usually save it or battery would no longer be rechargeable like a 12V car battery? Yes, stupid BMW design yet programming these CAS key is not easy (special equipment) even the key itself on ebay is cheap (and battery replaceable.)
This is not a CAS key. The CAS key is not rechargeable for the reason that it doesn't ever get inserted into the dash, where these non-CAS keys are charged. No, not stupid BMW design, extremely clever and durable BMW design These batteries last 15-20 years.
Lol. It's fun to learn but yeah I agree. The most annoying people are the ones with a $60k BMW. That spend 5k a year, sell their car @ 50k miles and call BMW's reliable. I like BMW but only the old ones.
VL2020 Coin Battery 🪙 you need: amzn.to/3wIrQHF
I ordered 90 degree gif e60 525i
@Omar Hadeed 90 degrees he says it in the video
The battery in the link doesn't have the G-shaped bracket like shown at 4:35 in the video. Would it still work?
@@johnwong1055 Did you figure it out? I'm wondering the same.
I just went through this and can say it works just fine. I did have a couple of snags though that i want to share with viewers.
1- Yes, the replacement battery had longer leads which I cut short but still the battery was not perfectly flush on the board like the original and hence the two halves of the shell did not come together perfectly. For that, you can use the blade to shave off the three little prong-like pieces in the cover where the battery sits and that will take care of it.
2- The lock/unlock function worked right away as I tested it before gluing the two halves back together however the fob would not click into the slot in the dash or operate the ignition. It's nothing to do with the shell. The reason was, which is what I want to highlight here, that the one chip on the board (top of the battery side) was not connected on the one end. The solder broke. Took me some time to finally figure it out. Once I welded it back all was good.
Notes: you don't need much Super glue so don't apply directly from bottle but rather use a small screw driver to apply to the edges of the shell of the fob.
When the fob didn't work in the slot I thought I ruined it so I bought a shell from Amazon. That didn't work either till I fixed the loose chip. Apart from not having the BMW logo that Amazon shell looks great and is very good quality.
If you are careful splitting the OEM fob and gluing it back you should be just fine.
I'm having this issue... what exactly did you do?
@@antoniagladden8501you mean the issue of the remote locking and unlocking the doors but the FOB not clicking in the slot and hence not starting the car?
If so, the problem is that the long black chip you see at 6:21 (above the battery) is loose, or not soldered properly. Make sure to solder it back and you'll be back in business. Don't use too much solder that you make unwanted contacts. If you do then the lock/unlock function will stop working.
Hope this helps.
Did you have to reprogram the remote key ? Once the battery is changed ?
@@Inverness006 No. You don't need to program it. It's the same circuit board/electronics so no programming is needed.
@@marwanazzam4160thank you so much ! I am skeptical about doing it myself. I bought the battery online and then lost it. Opening the plastic key was quite a challenge and I have never done sth like this before.
I thought losing the battery was a sign 😅…
I bought it again online and will give myself a chance. Hope I don’t mess it up
Congratulations to BMW for making a key that’s almost impossible to replace the battery 👏👏👏
This is one way of making money after you purchase the car
Its a rechargeable battery, so don't rush to blame such a great company.
@@crisshsk9260 how do you recharge it?
@@kungpug5406 I'd like to know that too🤔👍
@@kungpug5406 It recharges when it is inserted in your car ignition slot (apparently). After some 10 years, it may stop recharging, in which case there seems to be no other solutions than to break the key in half, which I am too scare to do. So overall I agree, it is smart that it recharges in the ignition slot, but still they could have made it easier to open.
Followed your instructions, never soldered before and the key works again with no issues. Thank you!
I pried the battery out without soldering and it off and it has worked fine now for 5 years!!!
id also like sum step by step instructions
@@BoostedOnaBudget5what he said👆🏾
I used a heat gun and gave the edges a quick pass on low setting, and it made the cutting part simpler for me. I didn't destroy my original fob case either :) Thanks for posting this!
Thanks. I was a little apprehensive about cutting with a blade but I worked it gently and slowly and eventually it came apart and the battery is now off. Greatly appreciated.
This DIY saved me $250, Thank you!
Nice clear video for replacing the battery on my 2011 328i. Thanks. The legs on the replacement battery were a bit long, just snipped them off after finished sodering.
Donde conseguiste la pila gracias
Thank you very much mate 🙏🏼 Just managed to do mine today! The battery went kaput after 18 yrs of use of the Car ( it was a spare battery, seldom used). Test driven the car w the new key, OK 👌🏼
To Cut it out is especially difficult, its hard plastic, need sharp cutters, careful w fingers ! The L cover of the antenna, a small piece fell off.
I seldom solder, so this is a rare skill for me, and I dont have the sucking pump, so its dangerous in case the solder melts into other nearby circuits.
I bought the battery online ( cheap, RM30/-) BUT it had different legs, not the winding G ones but straight down, but Winged, so it wont fully fit into the hole ! So i need to shave some plastics inside, otherwise the cover wont close tight fit.
Lastly, i would glue back the two parts using 2 part epoxy and the L piece back.
All the time I was Cursing, Who was the Bloody Stupid BMW Engineer who made our lives Miserable by owning the car. Why did they make the key Fob Sealed ? Bloody Idiots. I have several other cars, they always have openable part to replace the battery.
You just saved me over $300. Thank you!!!
I sat down with my new DIY soldering iron and followed this guide, spot on, thank you so much! 🙌
what did you set the temp of the soldering iron to? Working through this right now
@@holdenellis687 I put it on max, it is a cheap DIY one though I have so isn't great.
Instructions here worked out great for me. I have no experience soldering, and replaced the batteries on both my key fobs. I recommend getting a new case instead of reusing the old one.
Can you recommend where to order a new case?
@@christopherweaver2398 same
@@aydengrasty6006 same
What’s the case phillip
I used these: www.amazon.com/dp/B07CNXQNVR/ref=cm_sw_r_apan_glt_fabc_JXMYP9A94HBNNG5CMH3R?_encoding=UTF8&psc=1
The Non-Comfort fob battery recharges when in use. If your spare fob battery died, it might just need a 3 hour recharge.
These batteries are almost all over ten years. They don't hold charges anymore
@@cmfo801 The battery recharges itself when you're driving. If the fob is seldom used, and the battery dies, it will need a several hr. trip to recharge. It worked on my 2011 BMW. Hopefully it will work for you.
used my spare recently on a 2006 e90. immediately low battery warning on the car. but after using it for a few days that's fine now.. so yeah it just needed to have recharge time since this spare was never used.
Followed instructions on 2009 325i saloon thank you worked a treat.... really appreciate the video!
After battery replacement the close button isn't working anymore. Any suggestions?
Good material Just 1 addon: solder longer or you gonna have cold solder joint.
This is insane, I can’t just drop a new battery in
It's ridiculous! 🙄
Very Helpful video, THANK YOU!
why is BMW that stupid on design their remote key....
Ist not supid, its just making money, oficaly you need to go to bmw and buy a new key
Stupid? These batteries last 15-20 years. They're doing something right.
@@DiscoFang Same. My batt was an 08. Finally died. 13 years not bad. The engine battery also original 08. Lasted 10 years.
@@mhks68 Yeah the BMW battery management system definitely works. Back in 2018 I bought a 2005 E61. The battery was the original, dated 05 on the terminal - lasted 13 years.
@@DiscoFang My next door neighbor found my BMW key fob and returned it directly to us...we barely know him. Could he have stole it??
Can you add the link from where you bought the battery?
After changing the soldered battery, do you need to initialize/program the key for it to work or does it work right away without any other effort?
did u figure this out?
@@BreyerWhiteI don’t think he did
As long as you use the original circuit board, the transmitter will still be synced up with the immobilizer. It never stops in fact. You can use the key with the battery removed as the transmitter is picked up by the car itself rather than the transmitter on key fob needing to send any signal to the cars immobilizer.
Thanks for this video; it's very helpful. ...and this is why the last new car I bought was NOT a BMW. It's a whole new level of aholeyness to require solder for a battery replacement. (I just replaced the battery on my 2020 acura. It took 3 minutes. It's a $1 battery.)
On F 30 line it's pretty simple to do.
cool to this point, it would have been complete with showing that it starts your car and also explain if the battery already has a charge or do you have to leave it in the car for initial charging.
Sweet I have comfort access & didn’t even know it!
Do we have reprogram the key after the new battery is mount ?
Hi Ravenzero
Were your lock and unlock buttons working after battery change. Did your key sync with the car after battery replacement.
Did your key work after ?
My key didn’t turn on the car does anyone know how to fix that
mine is 06 Non-Comfort Access Key , and didn't need to reprogram after solder the new battery on.
Making the key like this should be illegal
I just bought new battery and case. Cheap enough to just dump the old housing.
hi mate...how to indentify what is Comfort access or non Comfort access and Battery series number for my car? my car was e90 320d 2011..?
Great video! Did you use any type of soldering paste or flux?
hey, would this work for a 2010 1 series? thankyou
Thank you for showing the replacement method, but it is really not a convenient key that BMO has made
Will the key fob need to be reprogrammed? It’s the key fob I’ve always used on the car.
After replacing the battery will I need to reprogram the key?
My same question
@@mtbridingog9083 No you don't, it's just a simple passive component replacement
I did this and now I think I need to reprogram does anyone know how
@@OG_RAFA4 did you make sure your new solder didn't touch any of the others? If it has done that, you may need a new key completely
Also can i get a comfort key fob and work with a car that didnt have a comfort key fob.
it worked your a miracle worker
Thank you very much my friend can u share that soldering kit you have please so i can get one
is solder wick ok to use for desoldering?
Wow a lot of work 4 me thank you
Thx so much m8 for help!
Cheers from Poland 🇵🇱 🍻
What temp did you have the tool set?
Will this fix if the key doesn’t start the car?
Was the remote control still working properly after replacing the battery? There were no problems with starting the car or opening the door from the remote control? I heard that when replacing the battery in the BMW remote control, you should provide an external power supply so as not to decode and unprogram the remote.
Mine didn't have any issues. All buttons working and car starting as usual with no problems.
could you replace only the battery if you wanted? Why do you need to change a rechargable battery?
Because that's how it's made .. worm 😂..
Could I mess something up by doing this
Súper helpful video. Thank you!
Thanks. Very helpful!!!!
Merci !! Very good Stuff!! Je m'abonne !
Thanks for sharing, much appreciated 🙏🏾
So bmw starts sometime but not always but once it's started I can start agian over and over for awhile but if I don't start it agian for while it won't start. With the battier in the key fob not alow the car to start then? So if I change the battier the car will start everytime them?
What happened 😊
After changing the battery I am no longer able to lock and unlock my BMW 1 series using the key fob. Car starts however if I place the fob into the dash. Any idea what to do?
check fuse
Google "how to reprogram bmw key". It's pretty simple, just involves a sequence of inserting the key in the ignition and pressing buttons on the key.
Does CR 2025 fit in.?
I have an 2009 bmw 328i, battery is dead waiting for new one to come but does anyone have a problem where when you take out the key all the windows roll down because it keeps happening in my car?
I did this but my unlock button no longer works, locks and trunk opens just just fine. I must have gotten some solder where I shouldn’t have or something :/
You should have add a video clip showing people it is working with the new battery you replaced.
Hi I did all this but the keyfob still does not unlock or lock my vehicle. Its a 2008 bmw x5. Any help? Any specific fuse I should check? Maybe the battery isn’t getting any charge. Any help is appreciated.
Hi Danz, I got into the same situation too. Did you solve your problem. Please share the details if so.
@@jeffinjosey1919 I have the same problem too
Im ordering another battery just in case my replacement was bad. Il let you know. Could be the antenna in the trunk? Maybe a faulty keyfob? Unfortunately i only have 1 keyfob no spare.
@@danzgarage843 I noticed if I quickly tap the unlock and lock buttons it sometimes works. So it might be a faulty keyfob. I dont get the low battery error.
@@Alex13mod
Just check the fuse for the key fob and antenna in the glove box compartment. Make sure they aren't blown.
A component has gone bad for me. Can someone tell me which component is between the battery and the transponder? Just above the quartz, in the middle of the board. Just need to know what it says.
What battery is in the fob?
No bull👏🏾👏🏾
Hi there, can anyone recommend where I can get this done in UK? I'm trying everywhere and I'm not confident enough to do this
I am in the UK and i just did mine. What part of the uk are you
are you sure its not 105°?
The key lock button does not work. lock and trunk release buttons work
Man thanks ! ♥
can you update your link so i can make sure i buy the correct battery please
(A year later) The battery is a vl2020.
my key randomly stopped working, it doesn’t unlock anything, even putting it in the car no lights will come on, but the car itself, the hazards will come on n the separate key to put in the door works, and the buttons inside the car. so i opened the key and the circuit board smells burnt and actually is browning… my trunk button is sunken in and brown at the back. i didn’t drop it so idek what’s happening
This is hilariously complicated just to replace a battery, you literally have to rebuild it
Does it lose the coding?
Why would it lose that?
Thanks for this. I managed to change the battery for my E92. I found the 'legs' of the new battery slightly too long to fit inside the battery compartment. This resulted in the fit being bad. So, I've got to unsolder it, somehow trim the legs and re--attach. Hope this helps someone.
Excellent
You have missed the hard part showing how practically it can split.
thanks a lot
Your key may need dash configuration as mine does now after the battery change.
Hey BMW, I have a crazy idea: use a normal battery!
Excellent!
Good video
Doit on reprogrammé après le changement de pile
Do you have to solder?
Could you not just put it in the points and leave it?
Nah it will move around to much causing a incomplete circuit sometimes
dude, where is your mic at? i hear only bubu-bububu, but thanks, all i need is to see how to open that thing
I think that's your audio, I heard him just fine
@@Astralkiller47 Odd. No audio on this end either...
Audio is only on the LH channel. If you're not hearing it you have a headphone or audio wiring issue at your end.
What the number ofvthe battery?
I did this and now my car won’t start it’s a bmw 328i 07 if anyone knows how to reprogram it please lmk !
on 2011 328i - will you get a warning to replace these batteries.? I don't problem when too close the car, but doesn't work from far., could this battery or something else.? What is an acceptable range for 2011 328i for key fob to work from ..? 12-15 fts or about 25 fts and more.?
Idk about the range and i have an 07 328i and the warning light popped up recently
Also, how do I change the language on my 2006 325i? Please help!
This one made me laugh can’t lie😂
TY
Mines held together with tape👌😂
BMW in Australia quoted $488.00 for a replacement key...............................wow
High tech keys lol
Well, they actually are indeed very high tech both with the recharging, the vehicle data recording on the key and the security of the design. There were only ever 10 security chips made for each and every BMW when it was manufactured. You get 2 with the car and the remaining 8 are available to order if you lose or break one. That's why they are near on impossible to duplicate or crack.
I bought a car, needed a 2nd key and the local dealer looked the car up and said there were 6 left. The previous owner must've lost a couple. Now there are 5.
My battery recently died I started using the key cause this is a disaster 😅
Damn! I got weld in order to replace my battery ?! lol
I have a 2010 750li xdrive bmw and need to replace the battery in my key fob
How to close again?i need to buy super glue?
The biggest bullcrap invention ever to take your car for service and even to replace on from dealer they want over $250 here in Canada. And it's not a normal battery replacement. My mom towed her car for this crap too.
Does the key have to be reprogramed after changing
After I did this my car wouldn’t start did you reprogram yours ???
I'm unable to lock and unlock the car after the battery change. Do I need to reprogram it? Any advice?
reprogram not needed in my case.
I tried this but fob still didn't work ?!?!
Any fix?
I cleaned the key glue with some alcohol
Why bmw make this so complicated?
How does it get charged? Would it be the charging mechanism not working? If so, a new fob will soon die.
When a key has been sitting for too long, it will get discharged. Would recharging usually save it or battery would no longer be rechargeable like a 12V car battery? Yes, stupid BMW design yet programming these CAS key is not easy (special equipment) even the key itself on ebay is cheap (and battery replaceable.)
This is not a CAS key. The CAS key is not rechargeable for the reason that it doesn't ever get inserted into the dash, where these non-CAS keys are charged.
No, not stupid BMW design, extremely clever and durable BMW design These batteries last 15-20 years.
Wtf. Grrrrr bmw
Is this the most BMW thing ever? It could have had an easy access tab, and heaven forbid a removable common battery like a CR2025. But no, BMW.
Mine didn’t wokr
STUPID BMW DESIGN....WHY CANT THEY JUST MAKE ( ALL COMFORT ) KEY FOBS...THIS NON COMFORT IS TOO PAINSTAKING...TOO MUCH WORK....
Lol. It's fun to learn but yeah I agree. The most annoying people are the ones with a $60k BMW. That spend 5k a year, sell their car @ 50k miles and call BMW's reliable.
I like BMW but only the old ones.
Don’t know what I hate more about this car now , cup holders or changing the key battery .