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      11-26-2012, 08:25 AM   #7
Whats that smell?
M3to335's Avatar

Drives: 135i, m435
Join Date: Nov 2006
Location: Your basement

iTrader: (6)

Originally Posted by Dackelone View Post
Did you use a BMW bulb?

How did you replace the orange corner bulb? Did you remove the headlamp housing?
I didn't realize BMW made special orange corner bulbs. That's not the issue here, it's the adaptive lights arent functioning.

Originally Posted by Bill B. View Post
Since you have a warning light on, the quickest way to identify the failure point would be with a code reader.

I have heard the stepper motors themselves are unreliable, but I have not seen a separate part number for them. Sometimes they become detached from the ball joint, but that usually wouldn't throw a code.

If a motor has failed, and a code has been thrown, I would think the controller would be mart enough not to try and drive EITHER motor.

There is a separate ACL module that does have a part number, that is most likely the motor controller. Other than reading the code, I don't know of a simple way to determine if it is the controller or the stepper.

Unfortunately, I have not heard anyone having successfully repaired this feature without replacing the entire headlight assembly.
I'll contact BMW and see if they will read the code for me. I'm sure this is going to be cheap. What pisses me off the most is that it's 2 months out of warranty.