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gert_blitz82

GLK Headlight Range Control Fault

My 2008 Mercedes GLK gasoline engine model is showing a headlight range control fault with a warning light on the speedometer. The low beams seem misaligned. I suspect a defective servomotor affecting the adaptive headlights. Has anyone else experienced this before a potential 1040€ repair? Could electrical connectors or the control module be the cause, or is it likely the servomotor? Does auto-leveling impact light intensity?

4 comment(s)

isabellhimmel10

I had a similar issue on my GLK where the headlights pointed all over the place. It was a problem with the headlight adjustment. Check if yours are aligned before replacing parts. Did your light intensity also change?

gert_blitz82 (Author)

When you say headlight adjustment, do you mean the manual adjustment screws or something related to the auto-leveling system? Did you have an error message, or just a visual symptom? Did the light intensity change? Any details are appreciated.

isabellhimmel10

I meant the auto-leveling system and the error message was the same as yours. I'm not an expert, but if unsure, get it checked by a mechanic for a proper diagnosis.

gert_blitz82 (Author)

I inspected the electrical connectors and found corrosion. After cleaning, the auto-leveling seems fine, and the error message is gone. The servomotor seems okay. I'll still have it checked at a workshop to be certain.

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