Why is the Mercedes Parking Assist System Not Working?
2 Answers
Mercedes Parking Assist System may stop working due to the following reasons: use of a temporary spare tire; damaged sensors or bumper; sensors being blocked by components installed on the vehicle, such as bumper covers; the vehicle being used to transport loads exceeding its capacity. More details are as follows: 1. Parking Assist System: This system includes ultrasonic sensors embedded in the front and rear bumpers, with each sensor having a diameter of approximately 15mm. The ultrasonic signals emitted by the sensors reflect when they encounter obstacles. Upon receiving the reflected signals, the sensors promptly feed them back to the system for distance calculation. The system then alerts the driver about the distance to obstacles outside the visible range through sound or video. 2. Verifying the Fault After Receiving the Vehicle: When shifting the transmission into R (Reverse) gear, it was observed that the red indicator light on the Parking Assist System (PTS) button illuminated, and neither the front nor rear parking warning indicators responded, indicating that the parking assist system was in a disabled state.
When the parking assist system in my Mercedes suddenly stopped working, it was quite frustrating. Common causes include sensors being covered by mud or ice, which prevents them from detecting surrounding objects, naturally causing the system to fail. Alternatively, the rear sensors might have been misaligned after an impact, leading to signal issues. Occasionally, the system software can act up, such as bugs appearing after an update—restarting the vehicle might fix it. A blown fuse is another common issue, especially due to current fluctuations during reversing. Low battery voltage can also interfere with the system, as electronic devices rely on power. It's advisable to start with simple steps: clean the sensors and rear camera, then restart the vehicle. If the issue persists, check the relevant fuses in the fuse box—avoid tampering with the circuits yourself. This problem is significant as poor visibility while parking can easily lead to scrapes, so it's best to get it fixed at a professional shop sooner rather than later.
