Setting the airflow
X Turn the SmartKey to position 2 in the ignition lock.
► To increase: press the 
button.
► To reduce: press the 
button.
The airflow from the rear-compartment vents and the center vents is the same.
See also:
Off-road driving systems
4MATIC (permanent four-wheel drive)
If you fail to adapt your driving style, 4MATIC
can neither reduce the risk of accident nor
override the laws of physics. 4MATIC cannot
take account of road, we ...
Problems with the transmission
Transfer case
Performance tests may only be carried
out on a 2-axle dynamometer. The brake
system or transfer case could otherwise be
damaged. Contact a qualified specialist
workshop for a perf ...
Coupling up a trailer
Do not connect the trailer's brake system
(if featured) to the hydraulic brake system
of the towing vehicle, as the latter is
equipped with an anti-lock brake system.
Doing so will result in a l ...