[maier_michael]

Hey everyone!

I am helping out a friend with their 330e which is having a drivetrain error with the faults in the attached image. There doesn't seem to be any issue driving the car, just no start/stop function. But no abnormal noises or issues starting the car.

I know there are a lot of threads on the aux battery on this forum, but I haven't seen these codes exactly. They read more like an issue with the sensor itself talking to the DME instead of the battery actually being bad.

What do you all think? Does the IBS/negative battery cable need to be replaced and not the aux battery? Or maybe still an aux battery issue?

I have no experience with these hybrid cars, so any help is appreciated!

[julian204]

Have you already seen this thread? https://f30.bimmerpost.com/forums/sh...highlight=330e

Seems like the issue here was solved by changing the aux battery. Can't help you much further I'm afraid