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The sensor function may be impaired in the events of one of the following.
The sensor cover is soiled (e.g. with mud, snow and the like).
▶
▶
The area in front of and around the sensor cover is obscured (e.g. by labels,
auxiliary headlights and the like).
▶
When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
If the sensor is covered or dirty, the corresponding message from the Front
Assist system appears in the instrument cluster display
tions.
WARNING
If you suspect that the sensor has been damaged, deactivate Front Assist
■
» page
183. Have the sensor checked by a specialist garage.
A collision or damage in the front or lower area of the vehicle could affect
■
the sensor function - there is risk of accident! Have the sensor checked by
a specialist garage.
Do not cover the area in front of and around the sensor cover. This can
■
lead to impaired function of the sensor - risk of accidents!
CAUTION
Remove the snow with a brush and the ice with a solvent-free de-icer.
Braking and stabilisation systems
Introduction
The brake and stabilization systems are automatically activated each time the
ignition is switched on, unless otherwise indicated.
The error display is in Chapter
» page
WARNING
The general information relating to the use of assistance systems must be
observed
» page 171,
in section Introduction.
Stability Control (ESC)
Read and observe
on page 172 first.
ESC improves vehicle stability in critical driving situations (e.g. if the vehicle
starts to skid) by the braking the individual wheels to maintain the direction.
172
Driving
» page
183, Malfunc-
39, Warning lights.
If there is an ESC intervention, the warning light
cluster.
Anti-lock brake system (ABS)
Read and observe
on page 172 first.
ABS prevents the wheels locking when braking. Thus helping the driver to
maintain control of the vehicle.
The intervention of the ABS is noticeable from the pulsating movements of
the brake pedal which is accompanied by noises.
When the ABS system is active, do not brake periodically or reduce the pres-
sure on the brake pedal.
Engine drag torque control (MSR)
Read and observe
on page 172 first.
MSR counteracts the tendency of the drive wheels to lock during downshifts
or sudden deceleration (e.g. on icy or an otherwise slippery road surface).
If the drive wheels should lock, then the engine speed is automatically in-
creased. This reduces the braking effect of the engine and the wheels can ro-
tate freely again.
Traction control (TCS)
Read and observe
on page 172 first.
The TCS prevents the drive wheels from spinning. TCS reduces the drive pow-
er transmitted to the wheels in the case of slipping wheels. Thus, for example,
driving on road surfaces with low grip is made easier.
flashes in the instrument
Fig. 195
Button for the TCS system:
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