Inte l ligent Technology
Intelligent Technology
Electronic Stabilization
Control (ESC)
Description
Elect ronic Stabilization Control (ESC) suppo rt s
driver safety. It red uces the risk of slipping and
improves dr iving stability. ESC detects crit ica l sit-
uations such as the veh icle oversteering and un-
dersteering or the wheels are sp inning. The vehi-
cle is stabilized by app lying the brakes or reduc -
ing engine torque. As soon as the ESC is active ly
regulat ing, the
D.1 indicato r light blinks in the in-
st rumen t clus ter.
The fo llow ing systems are integrated in t he ESC:
Ant i-lock braking system (ABS)
ABS prevents the whee ls from locking whe n brak-
ing. The vehicle can sti ll be steered even during
hard brak ing. Apply steady press ure to the brake
pedal. Do not pump the pedal. A puls ing in t he
brake pedal indicates that the system is acting to
st abilize t he vehicle .
Brake assist system
The brake assist system can decrease brak ing dis-
tance . It increases brak ing power when the driver
presses the brake pedal q uickly in emergency sit-
uations . You must press and hold t he brake pedal
until the dangerous sit uat io n is over . In veh icles
with adapt ive cruise control*, the bra ke as sist
syst em is more sensitive if t he dista nce detec t ed
t o the vehicle dr iving ahead is too small. On
vehicles with act ivated and funct ioning night vi-
sion assist*, the brake assist system can respond
mo re sensit ively if there is a warning .
Anti-slip regulation (ASR)
ASR red uces eng ine power when t he dr ive wheels
be gin sp inning an d adapts t he force to t he road
conditions. This makes it easie r to sta rt, acceler -
ate and dr ive up hills.
Electronic differential lock (EDL)
EDL a pplies the bra kes to a wheel tha t st art s
sp inning and t ra nsfe rs t he dr ive powe r to t he
120
other d riving whee ls. This func t ion is no t ava ila -
ble at hig her speeds.
In extreme cases , EDL a utomat ical ly switc hes off
to keep t he brake on t he bra ked wheel from ove r-
heating. The ve hicle is still working correct ly. EDL
will switc h on again automatically when condi-
tions have returned to normal.
Steering recommendation
The ESC he lps t o st abili ze th e vehicle by cha ng ing
t he st eer ing torque.
In veh icles with dynamic st eer ing*, ESC a lso
helps to stab ilize the st eeri ng in crit ical situ a-
tions.
Selective wheel torque control
Se lective wheel to rque control is used when d riv-
ing on curves . The front whee l on the ins ide of
t he curve or both whe els on the ins ide of th e
curve are braked se lectively as needed. This al-
lows mo re pre cise driving in cur ves .
Automatic post-collision braking system
The "a utomat ic post -coll ision braking system"
can help to reduce the risk of sliding and of addi-
tiona l collisions after an acc iden t . If the a irbag
con t ro l modu le dete ct s a collision above a certai n
vehicle speed, the veh icle is braked by t he ESC.
The veh icle does not brake automatically if:
- the drive r presses the accelerator pedal, or
- the bra king force generate d by the pressed
brake pedal is greater than the braking force
that would be initiated by the system, or
- the ESC, the bra ke system or the vehicle elect ri-
cal system are not functioning.
A WARNING
- The ESC and its integ rated systems can not
overcome the lim its imposed by natura l
p hys ica l laws. Th is is es pecially impo rt an t
on s lippery or we t roads. If the system s be-
g in act ing to st abili ze your vehicle, you
should immedi ately al te r your speed to
match t he road and t raffic conditions. Do
not let the increased safety provided tempt
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