Braking and parking
Stabilisation and brake assis-
tance systems
Control lamps
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 lamp also lights up.
Flashes
ESC or TCS activated.
It lights up
TCS manually deactivated.
Or: ESC in Sport mode
›››
page 269 .
Or: ESC manually deactivated
›››
page 269 .
It lights up
ABS faulty or does not work.
The control lamps light up together when
the ignition is s
wit
ched on and should turn
off after approximately 2 seconds. This is the
time taken for the function check.
Brake assist systems
Electronic Stability Control (ESC)
The ESC helps t
o improve safety. It reduces
the tendency to skid and improves the stabil-
ity and roadholding of the vehicle. The ESC
detects critical handling situations, such as
vehicle understeer or oversteer, or wheel-
spin on the driving wheels. It stabilises the
vehicle by braking individual wheels or by re-
ducing 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 (TCS), electronic dif-
ferential lock (EDS), electronic torque con-
trol (XDS) and the tractor-trailer sway mitiga-
tion*.
ESC also helps stabilise the vehicle by chang-
ing the torque.
The TCS can be deactivated when wheel spin
is desirable
›››
page 269 .
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 effectiv
eness of the ABS could be
severely 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 (TCS)
In the event of the wheels spinning, the TCS
reduces the engine torque to adapt to the
road condition. This helps the car to start
moving, accelerate or climb a gradient.
Electronic differential lock (EDL)
When the EDL detects wheelspin, it brakes
the spinning wheel and directs the power to
the other driven wheel. This function is ac-
tive up to approximately 100 km/h (62 mph).
To prevent the disc brake of the braked
wheel from overheating, the EDL cuts out
automatically if subjected to excessive loads.
The vehicle can still be driven. The EDL will
switch on again automatically when the
brake has cooled down.
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