How to clear the Crown headlight adjustment malfunction indicator?
2 Answers
Crown headlight adjustment trouble codes need to be cleared at an authorized 4S dealership using a diagnostic scanner. Automotive headlights, also known as vehicle front lights or LED daytime running lights, serve as the "eyes" of a car. They not only affect the owner's external image but are also crucial for safe driving during nighttime or adverse weather conditions. The classification of automotive lights is as follows: 1. Headlights. Combined headlights are located at the front of the vehicle, illuminating the road ahead to enable safe nighttime driving. 2. Combined taillights. Positioned at the rear, these provide illumination and signaling functions. 3. Turn signals. Amber-colored lights indicating left or right turns to other road users, as required by regulations. 4. License plate lights. Primarily illuminate the license plate for vehicle identification at night.
I've been driving a Crown for over a decade and encountered this headlight adjustment warning light several times, usually solvable with simple methods. First, don't panic - this light indicates an issue with the headlight leveling system, possibly due to dirty sensors or electrical problems. Here's what I've done myself: turn off the engine, park properly, disconnect the negative battery terminal for 5 minutes then reconnect to reset the fault code. If the light remains, try driving a short distance as the system might auto-calibrate. If that doesn't work, check the front suspension sensor position for looseness or dust accumulation, clean it and retry. Older Crowns often get unstable sensors from rough city roads. If all else fails, visit a dealership for proper diagnostic computer reset - don't force it to avoid complete headlight failure. Always verify headlight height after repairs, as nighttime driving safety comes first. This time, my fix took under 30 minutes.
