Just got back from BMW of Sterling and they quoted me $1314.01 to replace this battery. I said no thank you but i still had to pay the $200 diagnostics fee. What a rip off.
Thanks for the guide. Fitted mine in 10 minutes following this. There’s a surprising amount of room to work with but the most difficult bit was unclipping the holder. The warning has now gone and the app tells me no control messages, so don’t need to ‘clear’ any codes.
Awesome video!! You saved me $900 !! The battery swap was easy with your excellent directions. I simply went to my local independent repair shop to clear the codes and perfection. This SOS thing hasn't been right since I picked up the car lightly used with 11K miles on it. Shame on BMW trying to gouge their customers with this when it finally became constant and intolerable about one mont after warranty expired. Many thanks !!
Just an FYI- on a 2021 M340i Xdrive , the battery is a 6 volt, 190 mAH ,#6833994-02. Just pull down the plastic cover and then pull the headliner down gently and you can access the battery. No screws need to be removed. Before ordering a $90 battery, I would suggest pulling the old one and testing the voltage first. Ours was not a dead battery issue , may be moisture from a leak around the sharkfin antenna from having a poor wrap job on the roof.
Thank you for this video I have this same fault on my 2017 530d. it only happens when the main 12 v battery in low.I just got a new 8v battery from BMW. $83.44.
Thanks for this. Will try it out on my 428 when I get around to it. Mines been throwing the SOS error, then it goes away for a bit and comes back, rinse and repeat
I had the problem on my X1 F48 2017 model. Assume it’s software have bugs. Tested to call SOS after shows SOS system failure message, get through perfectly, which proves the system NOT failure. Used voice control coincidentally last week, the fault message disappeared dramatically, and didn’t back till today. I rarely use voice control before, have tried to disconnect blue tooth device and reconnect from other youtube video, didn’t work well. Can’t say it’s the solution, but cost nothing and worth a try.
Thank you for the video. Can there be two batteries in the car or is there only one, either black or green? I have a BMW X3 (F25)  I found a green battery in the trunk and somewhere in the front there should be a black one, right?
Many thanks for this. I am pretty dismayed by the error but your video should lessen the cost. What really rubs salt in the wound is that I’m just doing this to get rid of the warning, my BMW Assist expired a year ago so the SOS button won’t do anything even after I have paid hundreds to fix it. Really frustrating, but thanks so much for this video as it should help to keep the cost down. Do you think you really needed to clear the code after replacing the battery or do you think it would have cleared itself over time?
Hello, I armed myself with patience and changed the SOS battery to an X4-G02. Everything went perfectly until the end when I started the car and the SOS warning message continued to appear :). I mention that inside, where the unit is, everything is dry and clean and there are no traces of water. What to do? Does the message need to be reset from somewhere? Thank you in advance.
Thank you for posting this video. Got mine replaced per your instructions. It still throws the code though. Any way for me to clear the code without a computer device like what you use? No telling what the dealer would charge me just to clear the code.
@@jasondboarder998 hopefully not. I am hoping replacing the battery fixed it, but the code just needs to be cleared. I am wondering if there is a way to clear the code without a code reading device like what was used in the video.
@@StrategicNetworker I replaced my own battery three days ago and cleared codes in the telecommunications module. so far so good. Im not 100% certain on the tele module, but in the DME codes clear after a certain amount of drive cycles on their own if the fault is gone. Something between 60-100 cycles.
Nice video, could you list the hardware used to monitor the errors and clean the ecu? Do you know the battery model for bmw f45? I have the same problem
@@CLEAN_WOMAN I’ve had my car into a specialist and it was my TCB unit that was faulty. Being replaced soon, £550 for the part alone. I believe the battery is under the carpet in the boot.
@MarshallSmith. Brill found it thank you, under the rear section of the boot liner. Thrown me because battery replacement was coming up with the 3 pin batteries and ours is the 1 with the small cable on. Oh wow that's so expensive considering a lot of us don't even use this feature
@@SirZynth I went to get the EGR valve recall update and the fault standing was caused by a failure within the TCB which also was stopping the update…. BMW dealership we’re quoting me tripple what an independent specialist is charging so could be worse. I hope you manage to get yours sorted with just the battery replacement.
@MarshallSmith. oh wow!! so I really need to be prepared to be spending a lot more than £30 on a replacement battery.. I've still not been for the EGR recall, my bad! Will see if it passes MOT Monday before sorting that, although a lot of garages won't pass if it has any kind of warning light on the dash. Thank you for the info Marshall, you have been very helpful 😊
