Check Engine Light - throttle position sensor
http://www.mercedesmedic.com/mercede...ensor-problem/
- Turn the key to ON position. Position II that is. Don’t start the car.
- Press and hold the gas pedal for at least five seconds. Keep the pedal pressed.
- Turn ignition off but do not remove the key. Now release the gas pedal.
- Remove key. Wait a minute before you restart your Mercedes.


