Cartmanizm

Hey Guys,

Just a quickie on disconnecting the battery. There are times when I need to work on the car that includes fiddling things around the airbags such as removing the steering wheel to fit a new trim or replacing the stock speakers in the doors. I've read that its best to disconnect the battery prior to doing all of this so that I won't activate an airbag fault code.


Do I just lift up the red lid and unscrew and disconnect that cable? Or do I have to go to the boot and full disconnect the battery?

Thanks.

DavidF

You have to disconnect at battery. Connection under hood leaves car powered up and will only disco the alternator

Cartmanizm

Wow thanks for that, I'm glad I asked. Is just disconnecting the negative (black) connection sufficient and do I need to wait a period of time at all before I commence work?

wolfgang0524

Just make sure you don't close the trunk before connecting the battery back up.

white535xi

yea, just disconnect the negative in the rear and you'll be fine

Cartmanizm

Haha, if somebody does that then is it really hard to get it back open again or would the key work?

Cheers

or_550i

The [mechanical] key works - as long as they don't have a trunk finisher that covers it. If the key lock is covered, like it is on mine, I attach 12v to the jump start location (under the hood) to give power to the car to electronically open the trunk.