2009 Mercedes GL 450 4Matic Engine type: 3.5 L V6 Use mouse pointer to steer. SPACE - Accelerator B - Brake H - Horn Down Arrow - up shift Up Arrow - down shift 4 - P 5 - R 6 - N 7 - D G - Start up F - attempt start D - Key on S - Key off R - Refuel left arrow is for the left turn signal right arrow is for the right turn signal P turns on the hazards O cancels the hazards or the turn signals or when the steering wheel lines up straight, it cancels the left or right turn signals.
