Automatic locking feature
The vehicle locks automatically when the ignition is switched on and the wheels of the vehicle are turning at a speed of more than 9 mph (15 km/h).
You could therefore be locked out when:
- the vehicle is being pushed.
- the vehicle is being towed.
- the vehicle is being tested on a dynamometer.

•► To deactivate: press and hold button 1 for about five seconds until a tone sounds.
•► To activate: press and hold button 2 for about five seconds until a tone sounds.
i If you press one of the two buttons and do not hear a tone, the relevant setting has already been selected.
You can also switch the automatic locking function on and off using the on-board computer
See also:
Vehicle operation outside the USAand Canada
If you plan to operate your vehicle in foreign
countries, please be aware that:
• service facilities or replacement parts
may
not be readily available.
• unleaded fuel for vehicles with a cataly ...
Service and literature
Your vehicle is covered under the terms of the
warranties printed in the Service and
Warranty Information booklet. Your
authorized Mercedes-Benz Center will
exchange or repair any defective pa ...
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 ...
