SmartKey
...
Before changing a fuse
X Park the vehicle and apply the parking
brake.
► Switch off all electrical consumers.
► Remove the SmartKey from the ignition
lock.
All indicator lamps in the instrument cluster
m ...
4MATIC (permanent four-wheel drive)
Never tow the vehicle with one axle
raised. This may damage the transfer case.
Damage of this sort is not covered by the
Mercedes-Benz Limited Warranty. All
wheels must remain either on the grou ...