Mercedes-Benz ML320 limp mode issue limiting speed to 30mph on Mercedes-Benz ML320

Some Mercedes-Benz ML320 owners report experiencing limp mode, which restricts the vehicle to operating in second gear and reverse, limiting speed to around 30 mph. This safety feature is designed to prevent further damage to the transmission but can be triggered by various issues, including problems with the transmission, turbo, or gearshift assembly. Common symptoms reported include being stuck in a specific gear, limited speed, and dashboard warning lights illuminating. To address limp mode, some owners find that restarting the engine and checking for engine warning lights can be helpful. In certain cases, specific error codes stored in the Electronic Transmission Control (ETC) module may need to be cleared to resolve the issue. Preventative measures, such as ensuring proper transmission fluid levels and intact O-Rings, are recommended to avoid encountering limp mode. It is advisable for owners experiencing these issues to consult a qualified mechanic or Mercedes-Benz specialist for effective diagnosis and resolution.