See also:

Conditions for activation
RACE START can be activated when: • the doors are closed. • the engine is running and it has reached an operating temperature of approximately 176 °F (80 °C). This is the case when the engine ...

Activating RACE START
•► Depress the brake pedal with your left foot, and keep it depressed. •► Turn the drive program selector clockwise until the RS lamp lights up. The multifunction display shows the RAC ...

Transfer case
The vehicle has permanent 4-wheel drive (4MATIC). Power is always transmitted to both axles. Performance tests may only be carried out on a 2-axle dynamometer. The brake system or transfer ca ...