SupraIV Headlight Range Control Malfunction

Greetings, fellow Supra enthusiast. The symptoms you describe strongly suggest a problem within the adaptive headlight system itself. The error memory pointing to a 'headlight range control fault' typically implicates a defective component. Before diving in deeper, have you perhaps made any aftermarket modifications to your lighting system, or has the vehicle sustained any frontal impacts that might have disturbed the headlight assembly alignment?

Thanks for the quick reply! No modifications and no accidents, thankfully. What exactly does the adaptive headlight system do, and what other components are involved? Is it something I could potentially fix myself, or am I looking at a trip to the workshop?

Understood. Adaptive headlight systems automatically adjust the headlight beam based on steering angle and vehicle speed, optimizing visibility. The system uses sensors, a control module, and servomotors. Given the error code and symptoms, the most probable cause is a faulty servomotor inside one of the headlights. Replacing it requires specialized tools and, depending on the vehicle's design, may involve recalibrating the entire system. I recommend visiting a qualified workshop to properly diagnose and rectify the issue.

Alright, thanks for the advice. I suspected it was something like that. I took it to the workshop, and you were right – it was a defective servomotor in the headlight. The repair cost me 1040€, but at least it's fixed now. Appreciate the help!