Overview
The on-board computer is activated as soon as you turn the SmartKey to position 1 in the ignition lock.
You can control the multifunction display and the settings in the on-board computer using the buttons on the multifunction steering wheel.

1 Multifunction display
2 To switch on the Voice Control System; see the separate operating
instructions
3 Right control panel
4 Left control panel
5 Back button
See also:
Activating/deactivating DSR
Activating
You can only activate DSR if you are driving
at 25 mph (40 km/h) or slower.
– Press button 1.
Indicator lamp 2 lights up.
The following messages appear in the
multifunction displa ...
Assembling the ball coupling
Mercedes-Benz recommends that you
have the ball coupling assembled at a
qualified specialist workshop. Only a
qualified specialist workshop has the
necessary specialist knowledge and tool ...
4MATIC (permanent four-wheel drive)
4MATIC ensures that all four wheels are
permanently driven. Together with ESP® and
4ETS, it improves the traction of your vehicle
whenever a drive wheel spins due to
insufficient grip.
WARNI ...
