E46 M3: Self Leveling Headlight Issue - Dorkiphus.net
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Old 02-19-2017, 09:49 PM
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LPM911 LPM911 is offline
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Default E46 M3: Self Leveling Headlight Issue

Was driving the M3 the other night and noticed that the headlights seemed to be exceptionally low. So low, that I ended up having to drive around with my brights on just to see anything that wasn't 6' in front of the car. Internet said first thing to check was the plastic sensor arms.

Here is the front (passenger side):
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Here is the rear (passenger side):
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The sensors look fine to me. Tomorrow I will try to get my computer connected and see if anything shows up in the diagnostic software. Not sure what else to check from here.

When I start the car with the headlight switch in auto, I can see the beams adjusting up and then down. But then they just stay down. So I don't think its the motors that controls them.

These have been perfectly fine the last 7 years of ownership, so I'm hesitant to just adjust the beam using the knobs on the lights themselves before getting a good diagnosis on why they all of of sudden are adjusting themselves all the way down.

Anyone ever had a similar issue? What should I look for next?
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