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)

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?

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.

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.

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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