Why Can't a Mercedes-Benz Car Shift Gears Suddenly?
2 Answers
If a Mercedes-Benz car cannot start, it is likely due to a malfunction in the gear lever or the gear shift lever positioning ball joint. The reasons why a car cannot shift gears after starting are as follows: 1. Gear Lever Assembly Malfunction: There may be an internal fault in the gear lever assembly, or the internal gears of the gear lever may be worn out, causing the gear lever to jam and making it very difficult to move forward or backward. 2. Gear Shift Lever Positioning Ball Joint Failure: The positioning component of the gear shift lever ball joint may have lost its function, allowing the gear shift lever to rotate freely around its own axis and making it impossible to accurately control the gear position. 3. Clutch Disc Pressure Plate Failure: Incomplete clutch separation may be caused by a failure of the clutch disc or the clutch disc pressure plate. This generally requires replacing the clutch three-piece set.
As an enthusiast with some knowledge of German cars, I've found that a sudden inability to shift gears in a Mercedes may be due to transmission module failure. Mercedes' electronic shifting system can sometimes get stuck due to software issues or be affected by low battery voltage impacting computer control. Additionally, if the brake light switch fails and can't detect pedal depression, it will lock the gear to prevent free rolling. Aging wiring or blown fuses may also interrupt signal transmission. I recall seeing a forum user mention gear lever mechanism wear causing operational issues. This situation can be quite dangerous, especially when suddenly immobilized in traffic, so I recommend promptly visiting a professional shop for diagnostic computer scanning to confirm fault codes.
