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What is the reason for the Mercedes-Benz E300 system malfunction?

2 Answers
LeKeira
09/04/25 5:29am
Mercedes-Benz parking assist system malfunction reasons are: use of a temporary spare tire; damaged sensors or bumper damage; sensors obstructed by components installed on the vehicle, such as bumper covers; the vehicle being used to transport loads exceeding its capacity. Parking Assist System: Includes ultrasonic sensors embedded in the front and rear bumpers, each with a diameter of approximately 15mm. The ultrasonic detection signals emitted by the sensors reflect upon hitting an obstacle. The sensors then receive the reflected signals and promptly feed them back into the system for distance calculation, alerting the driver through sound or video about the distance to obstacles outside the driver's field of vision. After receiving the vehicle, test driving confirmed the fault phenomenon: Shifting the transmission into R gear revealed that the red indicator light on the parking assist system (PTS) button was illuminated, and neither the front nor rear parking warning indicators responded, indicating that the parking assist system was in a deactivated state.
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Mike
09/16/25 6:28am
I've encountered the sudden shutdown of the Mercedes-Benz E300 system several times before, with various causes. The most common issue is battery-related, such as when the battery reaches the end of its lifespan or lacks sufficient charge, causing the entire vehicle's electrical system to fail. Another frequent problem is software glitches. These high-end Mercedes systems are quite complex, and sometimes failed updates or bugs can lead to a black screen or unresponsiveness. It could also be a blown fuse, where an electronic module overloads and causes a meltdown. If the system shuts down while driving, immediately pull over safely, turn on your hazard lights, and don't push through—safety comes first. It's best to visit an authorized dealership as soon as possible for a comprehensive check-up to prevent minor issues from turning into major repairs. As a daily commuter, I make it a habit to regularly inspect the battery and system to prevent problems before they arise.
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