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Driver assistance systems
WARNING
Driving at high speed on icy, slippery wet
ground c
an result in loss of vehicle control
and serious injury to the driver and passen-
gers.
●
Adjust your speed and driving style to visi-
bility, road, traffic and weather conditions.
Even though the brake assist systems, ABS,
BAS, EDL, ASR and ESC, provide more securi-
ty, do not take unnecessary risks while driv-
ing.
●
Brake assist systems can not overcome the
laws of physics. Even with ESC and other sys-
tems, slippery and wet roads will always be
dangerous.
●
Driving to quickly on wet ground can result
in the wheels losing contact with the ground
in an effect known as “aquaplaning”. Without
adherence, it is impossible to brake, steer or
control the vehicle.
●
Brake assist systems cannot avoid acci-
dents if, for example, the driver does not re-
spect safety distances or drives to quickly in
difficult conditions.
●
Even though brake assist systems are ex-
tremely effective and help control the vehicle
in difficult situations, remember that the ve-
hicle stability depends on tyre grip.
●
When accelerating on a slippery surface,
for example on ice or snow, press the acceler-
ator carefully. The wheels can still slip even
with brake assist systems resulting in loss of
vehicle control.
WARNING
The effectiveness of the ESC can be consider-
ably r
educed if other components and sys-
tems affecting driving dynamics are not main-
tained or are not functioning correctly. This
includes, among others, brakes, tyres and
other systems already mentioned.
●
Remember that changing and fitting other
components to the vehicle can affect opera-
tion of the ABS, BAS, ASL EDL and ESC.
●
Changes to the vehicle suspension or using
unapproved wheel/tyre combinations can af-
fect operation of the ABS, BAS, ASL EDL and
ESC, as well as their effectiveness.
●
Likewise, the effectiveness of ESC depends
on the use of suitable tyres ››› page 287.
Note
●
To ens
ure that the ESC and ASR work prop-
erly, all four wheels must be fitted with iden-
tical tyres. Any differences in the rolling radi-
us of the tyres can cause the system to re-
duce engine power when this is not desired.
●
If a malfunction should occur in the ABS,
the ESC, EDL and ASR will also be out of ac-
tion.
●
Noises may be heard while any of the
above systems are operating.
Switching ASR on and off
Fig. 204 Detailed view of the centre console:
b
utt
on u
sed to switch ASR on and off (vehi-
cles with ESC)
The electronic stability control ESC consists
of
ABS, EDL
and ASR and on
ly works when
the engine is running.
The ASR can be switched off while the engine
is running by pressing the button
››› Fig. 204. The ASR (and similar) is only
switched off when the required traction is not
obtained:
●
When driving through deep snow or on
loose ground (gravel, etc.).
●
When “freeing” a trapped vehicle.
Turn the ASR back on by pressing the
button ››› Fig. 204.
207
Technical dataAdviceOperationEmergenciesSafety
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