How to Turn Off the Headlight Control Range Malfunction?

[OColton]

When the headlight level adjustment warning appears, it indicates that the headlight beam direction has deviated from the standard direction. You need to take your vehicle to a repair shop for maintenance and then use a fault diagnostic tool to clear the fault code. Depending on the vehicle model, access the corresponding diagnostic system; read the fault code; check the data stream; after diagnosis and repair, clear the fault code by reading and clearing the fault code.

[RhettFitz]

I also had a headache with this issue last time. That night when driving on a suburban road, the system suddenly reported a fault, the lights were flickering wildly, and it almost caused an accident. The next day, I removed the trunk floor panel and found the level sensor linkage of the rear suspension was stuck. After lubricating it with WD-40 and moving it a few times, it worked normally again. Actually, 90% of this fault is due to sensor issues. There's one sensor at the front and rear of the vehicle, responsible for monitoring height changes. If they're covered in mud or the linkage is deformed, the system will report an error. Vehicles with modified suspensions are particularly prone to this problem, so it's best to check and clean the sensors every quarter. Now, my habit is to rinse the sensor locations under the chassis when washing the car, and I haven't encountered similar faults in the past three years.

[LeAsher]

There are two solutions I have for dealing with headlight adjustment malfunctions. The simple version is to disconnect the negative terminal of the battery for ten minutes to reset the system, which is particularly effective for intermittent faults. The complex version involves checking three key points: whether the wiring of the level sensor has been chewed by rodents, if the chassis height measurement module has water ingress, and whether the gear of the headlight adjustment motor is stuck. Last week, while helping a neighbor, I found that the right front wheel sensor connector was oxidized, and sanding the contact points fixed it. If you really can't figure it out, don't push yourself too hard—after all, it affects nighttime illumination distance. Just drive to a repair shop and use a diagnostic scanner to read the fault codes; it can pinpoint the problematic component in five minutes.

[OLucy]

This type of fault usually occurs in the core components of the headlight adjustment system. Focus on checking whether the installation position of the front and rear axle level sensors is offset, especially in vehicles that frequently pass over speed bumps, as they are prone to displacement. Next, inspect for loose connectors in the headlight control module. After the last heavy rain, I encountered oxidation at the interface causing poor contact. For emergency handling, try disconnecting the battery to reset the system or look for the headlight calibration option in the central control screen. If the dashboard displays a fault code like B1015, it's almost certain that it's a sensor failure. The most hassle-free solution is still to visit a professional shop for a baseline setting using the ODIS system.