Vehicle profile: BMW X3 2020 model, has traveled 21,000 kilometers in the year since the car was first purchased, has never had a traffic accident, and is in good condition.
Fault description: When washing the car, it was discovered that there were cracks in the rear taillight cover.
The cracks in the taillight lampshade may be due to the following reasons: 1. The lampshade is aging; 2. The lampshade is impacted by external forces; 3. The lampshade is corroded.
Cause of failure 1: Lampshade is aging.
Car light covers are made of plastic. If the vehicle is parked outdoors in an unobstructed place for a long time, it will accelerate the aging of the lamp cover, causing its texture to become brittle and small cracks to appear on the surface.
Solution 1: The lampshade is an integrated structure and cannot be replaced separately. The taillight assembly needs to be replaced. During the warranty period, the vehicle can be replaced free of charge at a 4S store; if the vehicle exceeds the warranty period, the replacement cost at the 4S store is about 2,500-3,000 yuan, and the replacement cost at the repair shop is about 2,500 yuan.
Cause of failure 2: The lampshade is impacted by external force.
Scratches or collisions between the rear of the car and other vehicles or objects can also cause damage and cracking of the taillight lampshade.
Solution 2: Damage to the car lights caused by the accident is not covered by the vehicle warranty. It is recommended to contact the insurance company to compensate for related losses.
Cause of failure 3: The lampshade is corroded.
Long-term use of detergents containing corrosive ingredients to clean the car body will cause corrosion of the lampshade and cracks on the surface of the lampshade.
Solution 3: The headlight is an integrated structure and the lampshade cannot be replaced separately. The taillight assembly must be replaced directly. During the warranty period, the vehicle can be replaced free of charge at a 4S store; if the vehicle exceeds the warranty period, the replacement cost at the 4S store is about 2,500-3,000 yuan, and the replacement cost at the repair shop is about 2,500 yuan.
Summary: Through fault analysis, it was found that the cracks in the taillight cover of the vehicle in the above case were caused by external impact. For the treatment method, please refer to Solution 2. The malfunction in the case is an isolated phenomenon, and the car owner does not need to worry. In addition, we recommend that car owners try to park their vehicles in a shaded underground garage to prevent sun exposure and accelerate the aging of the lampshade.
