Mercedes-Benz GLC300 parking sensors fail to detect obstacles at night on Mercedes-Benz GLC300

Some Mercedes-Benz GLC300 owners report experiencing issues with their parking sensors failing to detect obstacles at night. These problems may stem from the sensors not transmitting continuous messages, leading to intermittent operation. Some owners notice unusual sounds when the car is in reverse, which could signal sensor problems, while others report a lack of audible alerts when obstacles are detected, indicating potential sensor malfunctions. Additionally, improper fitting by body shops has been linked to sensor issues, and there may be design flaws in the parking sensor system that affect functionality. Specific concerns include individual sensors falsely triggering, such as the front left sensor activating without an obstacle present. The Mercedes Parktronic system, which relies on bumper sensors for obstacle detection, may also fail in low-light conditions. In some cases, both left and right parking sensors may indicate a malfunction when the vehicle stops and the reversing camera activates. Lastly, accidental deactivation of the parking sensor system via the dashboard button can lead to a lack of detection. It is recommended that owners have their systems checked by a qualified technician to diagnose and resolve these issues effectively.