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:
Switching on DISTRONIC PLUS, storing
the current speed and maintaining it
Important safety notes
WARNING
The vehicle can be braked when DISTRONIC
PLUS is activated. For this reason, deactivate
DISTRONIC PLUS if the vehicle is to be set in
motion by other means ( ...
Problems with the SmartKey
...
Vehicle identification plate
Even if you have calculated the total load
carefully, you should still make sure that the
gross vehicle weight rating and the gross axle
weight rating are not exceeded. Details can
be found on ...
