[conolulu]

Can a really drained battery cause my iDrive to not turn on as well as my car not starting, but still be able to unlock and light up dome lights in my car?

My car won't start... but I was getting a low battery warning on my dash about a day ago and I have been working on my car for hours with the lights on.

I'm hoping replacing a dead battery will be able to fix my problem!!

Any help is greatly appreciated, thank you!

[tlow98]

Likely, yes. It’s either your battery or your alternator.

[Socket]

check your battery terminals to see if they are tight

[BMW FQ]

Yeah, when i was working on my car with ista a forgot a bit a time and the next day i got my iDrive on in booting loop. Charged the Battery and never happen again. The rest of the car worked normal as always.

[ctuna]

electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU

Read about IBS in the first pdf

Having a bad battery (or low) in these can cause you to chase your tail.

[catcher22]

Yes, a dying battery sometimes causes all types of weird electrical issues and codes.

Why would you work on your car for hours with the lights on (and not attached to a battery tender)? Of course it's your battery that's dead or dying. Simple logic.....