Car is a 2007 Mercedes Benz R350 - it uses a "touch shift" button instead of a more traditional 'console shift lever" to drive, park, etc.. car is in park, with the emergency brakes on as well. Driver gets off car, passenger turns of the engine and the car starts rolling backwards...until it hits a curb and then stops. This was not on a steep slope, but a very slightly sloped parking area in front of a supermarket. There were no injuries this time around - but this problem is very serious and dangerous because it could have hit someone, there was no way of stopping the car. This same problem has happened before about 1 yr ago, car parked in driveway, driver gets out, car starts rolling backwards, knocks over the driver, runs over his leg, he injures his shoulder, goes to the hospital. This previous incident was reported to the dealer, they checked out the car, said that there was no problem with the car and returned it - no parts were replaced. I am reporting this incident because this "rolling back" of the car has happened more than once, there are significant issues regarding either the gear shifts or with the "park / brakes" of the car, all are potentially very dangerous.

- Rowland Heights, CA, USA

The hand brake of Mercedes Benz R350 hand brake handle is very easy to disengage with cable that control or release the hand brake. Cause vehicle to slide back and run over person's leg.

- Rowland Heights, CA, USA