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      02-14-2015, 11:14 AM   #6
wildcatcrazy
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Drives: E90 335i
Join Date: Oct 2013
Location: USA

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2009 335i  [0.00]
Quote:
Originally Posted by VTECaddict
Every car I've seen has them work with the car off, even other BMWs. You see their brake lights come on before the car starts up because of the push button start.

It could be a potential safety issue. Brake lights should work under any condition as long as there is enough electricity to power them. What if there's some communication fault with the FRM and CAS and the FRM doesn't know the car is on? Or some malfunction causes the car to turn off while driving?
Once you insert key, they should work. I think we were saying they won't work with key out.
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