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.
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:
Important safety notes
For reasons of safety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime. In some
countries, operation of the headlamps varies
due to legal requirements a ...
Important safety notes
If a tire pressure monitor system is installed,
the vehicle's wheels have sensors that
monitor the tire pressures in all four tires. The
tire pressure monitor warns you when the
pressure drops ...
Comfort tuning
In Comfort mode, the driving characteristics
of your vehicle are more comfortable. Select
this mode if you prefer a more comfortable
driving style, but also when driving fast on
straight roads ...
