Tread wear
The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. Government test course. For example, a tire graded 150 would wear one and one-half times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm, due to variations in driving habits, service practices and differences in road characteristics and climate conditions.
See also:
Cleaning the headliner and carpets
Headliner: use a soft brush or a cleaning
agent recommended and approved by
Mercedes-Benz to remove heavy soiling.
Carpets: use the carpet and textile
cleaning agents recommended ...
Convenience opening feature
You can ventilate the vehicle before you start driving. To do this, the key is
used to carry out the following functions simultaneously:
unlock the vehicle
open the side windows
open the pan ...
Steering wheel heating
Switching on/off
The steering-wheel heating heats the leather
areas of the steering wheel.
► Make sure that the SmartKey is in
position
2 in the ignition lock.
► To switch on/off: ...