Inte l ligent Technology
Intelligent Technology
Electronic stabilization
control (ESC)
Description
The Electronic Stabilization Control (ESC) reinfor-
ces driver safety . It reduces the risk of slipping
and improves driving stability. ESC detects crit i-
cal situations such as the vehicle oversteering
and understeering or the wheels are spinning.
The vehicle is stabilized by applying the brakes or
reducing engine torq ue. Once the ESC is activat-
ed, the indicator light
D.1 blinks in the inst ru-
ment cluster .
The fo ll ow ing systems are integrated in the ESC:
Ant i-lock braking system (ABS)
ABS prevents the whee ls from locking when brak-
ing. The vehicle can sti ll be steered even during
hard brak ing. Apply steady pressure to the brake
pedal. Do not pump the pedal. A puls ing in the
brake pedal indicates that the system is acting to
stabilize the vehicle .
Brake assist system
The brake assist system can decrease brak ing dis-
tance . It increases braking power when the driver
presses the brake pedal quick ly in emergency sit-
uations . You must press and hold the brake pedal
until the dangerous situat ion is over .
Ant i-slip regulation (ASR)
ASR reduces engine power when the drive wheels
begin spinning and adapts the force to the road
conditions . This makes it easier to start, acceler-
ate and dr ive up inclines.
Electronic diffe rential lock (EDL)
EDL applies the brakes to a wheel that starts
spinning and transfers the drive power to the
other driving wheels. This function is not availa-
ble at higher speeds.
In extreme cases, EDL automatically switches off
to keep the brake on the braked wheel from over-
heating. The vehicle is still work ing correctly. EDL
90
will switch on again automatically when condi-
tions have returned to normal.
Steering recommendation
The ESC helps to stabilize the vehicle by changing
the st eering torque.
Selective wheel torque control
Selective wheel torque control is used when driv-
ing on curves. The front wheel on the inside of
the curve or both wheels on the inside of th e
curve are braked selectively as needed. This al-
lows more precise driving in curves. The applica-
ble system may not activate when driving in wet
or snowy conditions.
Automatic post-collision braking system
The "Automat ic post-collis ion braking system"
can help to reduce the risk of sliding and of othe r
collisions afte r an accident. If the airbag cont rol
module detects a collision above a certain vehicle
speed, the vehicle is braked by the ESC.
The vehicle does not brake automatically if:
- the driver presses the accelerator pedal, or
- the braking force generated by the pressed
brake pedal is greater than the braking force
that would be initiated by the system, or
- the ESC, the brake system or the vehicle electri-
cal system are not functioning .
A WARNING
- The ESC and its integ rated systems cannot
overcome the lim its posed by natural physi-
cal laws. This is especially important on slip-
pery or wet roads.
If the systems begin act-
ing to stabilize your vehicle, you should im-
mediately alter your speed to match the
road and traffic conditions . Do not let the
increased safety provided tempt you into
taking risks. This could increase your risk of
a collision .
- Please note the risk of a coll ision increases
when dr iving fast, especially through curves
and on slippery or wet roads, and when dr iv-
ing too close to objects ahead. The ESC and
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