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Driving
conditions. Depress the brake pedal or use
the hand brake immediately.
●
If the engine stall
s, depress the brake
pedal or use the hand brake immediately.
●
When following a line of traffic uphill, if
you want to prevent the vehicle from rolling
back when starting off, hold the brake ped-
al down for a few seconds before starting
off.
Note
The Official Service or a specialist work-
shop can t
ell you if your vehicle is equip-
ped with this system.
Stabilisation and brake as-
sist
ance syst
ems
Contr
ol l
amps
It lights up
Fault in the ESC or ABS, or disconnection caused by
the system.
The ESC works in combination with the ABS. If the
ABS fails, the l
amp also lights up.
Flashes
ESC or ASR activated.
It lights up
ASR manually deactivated.
Or: ESC in Sport mode
›››
page 298.
It lights up
ABS faulty or does not work.
The control lamps light up together when the
ignition is switched on and should turn off af-
ter approximately 2 seconds. This is the time
taken for the function check.
Brake assist systems
Electronic Stability Control (ESC)
The ESC helps t
o impr
o
v
e saf
ety. It reduces
the tendency to skid and improves the stabili-
ty and roadholding of the vehicle. The ESC
detects critical handling situations, such as
vehicle understeer or oversteer, or wheelspin
on the driving wheels. It stabilises the vehicle
by braking individual wheels or by reducing
the engine torque. The warning lamp will
flash on the instrument panel when the ESC is
intervening .
The ESC includes the anti-lock brake system
(ABS), the hydraulic brake assist (HBA), the
traction control system (ASR), electronic dif-
ferential lock (EDS), electronic torque control
(XDS) and tractor-trailer sway mitigation*.
ESC also helps stabilise the vehicle by
changing the torque.
The ASR can be deactivated when wheel spin
is desirable
›››
page 298.
Anti-lock brake system (ABS)
ABS prevents the wheels from locking up un-
der braking until the vehicle has reached a
virtual standstill. You can continue to steer the
vehicle even when the brakes are on full.
Keep your foot on the brake pedal and do not
pump the brakes. You will feel the brake pedal
pulsate while the ABS is working.
If the running gear or brake system is modi-
fied, the effectiveness of the ABS could be se-
verely limited.
Hydraulic Brake Assist (HBA)
The brake assist system can reduce the re-
quired braking distance. The braking force is
automatically boosted if you press the brake
pedal quickly in an emergency. You must
keep pressing the brake pedal until the dan-
ger has passed.
Traction control system (ASR)
In the event of wheelspin, the traction control
system reduces the engine torque to match
the amount of grip available. This helps the
car to start moving, accelerate or climb a
gradient.
296
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