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:
Driving tips
Maintain a greater distance from the vehicle in front than when driving
without a trailer.
Avoid braking abruptly. If possible, brake gently at first to allow the
trailer to run on. Then, i ...
Transfer case
This section is only valid for vehicles with 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
s ...
Important safety notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It begins to work at speeds of
approximately 20 mph (30 km/h). A warning
display in the exterior mi ...
