general problems of the 2007 Mercedes Benz CLK350

Vehicle would be stock on 1st or 3rd gear without any error code engine light or transmission light on. That can happen anytime. On take off at red light or cruising on 5th 6th or 7th shift. This is an automatic transmission with no mechanical issues. I am guessing it is a software issue. Very dangerous in traffic or high speed highway because the vehicle stalls unintentionally. A restart of vehicle fixes the issue.

The contact owns a 2007 Mercedes Benz Clk350. While driving approximately 45 mph, the vehicle started to lose acceleration until it stopped in the middle of the road. The vehicle had to be turned off and then restarted. The vehicle was taken to three independent mechanics who diagnosed that the control speed sensor needed replacement. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 120,000. The VIN was not available.

Transmission (mercedes type 722. 9) will not shift properly. Transmission s/n 722906 00 999408. Suspect component: valve body (electrohydraulic control unit). Multiple variations of improper shifting, examples: 1. Transmisison will not shift after vehicle is stopped with engine runnng resulting in no movement of vehicle; 2. Transmission will shift to initial gear then remain in that gear resulting in movement of vehicle with high engine rpm's. Issue may correct itself by operator shifting to neutral/park, or turning engine off. Issue is increasing in frequency. Lack of proper shifting results in vehicle becoming potentially dangerous to drive.