Cronos Headlight Range Control Fault

Sounds tricky. The auto-leveling system can be sensitive. Have you checked the physical linkage of the servomotor to the headlight reflector? Sometimes those can get gummed up or even pop off. It's like a tiny ball and socket joint in there. Does it happen on both headlights or just one?

I haven't examined the physical linkage of the servomotor to the headlight reflector closely enough. Can you elaborate on how to inspect this linkage, and are special tools needed?

It's delicate work. You'll likely need to remove the headlight assembly for a proper look. The linkage is usually a small plastic arm connected to the reflector. Check for any play, breakage, or disconnection. No special tools needed, just good lighting and maybe a small mirror. If that all seems fine, and the error is still there, a faulty servomotor is probable. Like a fuse blowing due to a short circuit, the motor is likely defective. Honestly, a workshop visit might be the best bet to properly diagnose the system.

Based on your advice, I consulted a technician. They confirmed a defective servomotor. The total repair cost was 1040€, including replacement and recalibration. The issue is resolved.