Important safety notes
While the vehicle is in motion, the tire pressure loss warning system monitors the set tire pressure using the rotational speed of the wheels. This enables the system to detect significant pressure loss in a tire. If the speed of rotation of a wheel changes as a result of a loss of pressure, a corresponding warning message will appear in the multifunction display.
WARNING
If the Check Tire Pressure Soon message
appears in the multifunction display, one or
more tires are significantly underinflated.
Stop the vehicle as soon as possible and
inflate the tires to the pressure specified on
the vehicle's Tire and Loading Information
placard or (where available) in the tire
pressure table.
Driving on a significantly underinflated tire
causes the tire to overheat and can lead to
tire failure. Underinflation also reduces fuel
efficiency and tire tread life, and may affect
the vehicle's handling and stopping ability.
Check all tires when cold, including the spare
tire, at least once a month. The tires should
be inflated to the recommended pressure.
This information can be found:
• on the Tire and Loading Information placard on the B-pillar on the driver's
side
or
• in the table for the tire pressure on the inside of the fuel filler flap
WARNING
The tire pressure loss warning system does
not provide a warning for wrongly selected tire
inflation pressures. Always adjust tire
inflation pressure according to the Tire and
Loading Information placard on the driver's
door B-pillar or on the tire inflation pressure
label located on the inside of the fuel filler flap.
The tire pressure loss warning system does
not replace regular checks of the tire inflation
pressures since a gradual pressure loss in
more than one tire cannot be detected by the
tire pressure loss warning system.
The tire pressure loss warning system is not
able to issue a warning due to a sudden
dramatic loss of tire inflation pressure (e.g. tire blowout caused by a foreign
object). In
this case bring the vehicle to a halt by carefully
applying the brakes and avoiding abrupt
steering maneuvers.
The function of the tire pressure loss warning system is limited or delayed
if:
• snow chains are mounted to your vehicle's tires.
• road conditions are wintry.
• you are driving on sand or gravel.
• you adopt a very sporty driving style (cornering at high speeds or driving
with high rates of acceleration).
• you are driving with a heavy load (in the vehicle or on the roof).
See also:
Resetting
Reset the sliding sunroof if it does not move
smoothly.
•► Turn the SmartKey to position 2 in the
ignition lock.
•► Raise the sliding sunroof fully at the rear.
•► Keep the s ...
Other bulbs
There are bulbs other than the Xenon bulbs
that you cannot replace. Replace only the
bulbs listed. Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
Me ...
Activating/deactivating PRE-SAFE®
Brake
PRE-SAFE® Brake is only available in vehicles
with DISTRONIC PLUS.
– Press the or
button on the
steering wheel to select the DriveAssist
menu.
– Press or
to select PRE-SAFE
Brake.
– P ...