How to Deal with AFS Malfunction in Adaptive Headlights?
2 Answers
Adaptive headlights, also known as Adaptive Front-lighting System (AFS), can automatically adjust the deflection of the headlights based on driving speed and steering angle to illuminate the turning area in advance, providing comprehensive safety lighting. This ensures the driver has optimal visibility at all times, thereby enhancing driving safety in the dark. Below are the steps to handle AFS malfunction in adaptive headlights: 1. Check if the bulbs or sensors under the chassis are waterlogged or damaged. 2. Inspect the headlight control unit for water ingress, which is a common cause of adaptive headlight failure. 3. If everything appears normal, visit a 4S shop to diagnose and resolve the issue by checking the fault codes.
A while ago, my car's headlights stopped turning with the steering wheel. I figured out a few troubleshooting steps: First, clean the sensors near the wheels—mud splashes during rainy days can block the sensors and cause the AFS to malfunction. Next, check the corresponding fuse in the fuse box; last time, I found a similar symptom when mice chewed through the wires. Plugging in an OBD scanner to read the fault codes is actually the most straightforward approach—last time, I saw a C1000 fault code, which meant the control module was fried. By the way, sometimes turning the car off and restarting can temporarily fix the issue; last time, disconnecting the battery for five minutes at a highway rest area and recalibrating did the trick. The chassis ride height sensors are also prone to issues—if the wheel ground clearance changes too much, the system gets confused. If you're going to work on it, disconnect the battery first—cars with modified coilover suspensions are especially prone to losing calibration.
