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Driver assistance systems
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 284.
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. 205 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
OFF
›
›
› Fig. 205
b
utton. The ASR (and similar) is only switch-
ed off when the required traction is not ob-
tained:
●
When driving through deep snow or on
loose ground (gravel, etc.).
●
When “freeing” a trapped vehicle.
Turn the ASR back on by pressing the but-
ton
OFF
›
›
› Fig. 205
.
Start assist systems
Introduction
WARNING
The intelligent technology in the start assist
syst
ems cannot change the laws of physics.
The improved comfort provided by start as-
sist systems should not prompt you to take
risks.
●
Unintentional movements of the vehicle
could cause serious injury.
●
The start assist systems are not a replace-
ment for driver awareness.
●
Always try to adapt the speed of the vehi-
cle and your style of driving to the condition
of the ground or the road and to weather and
traffic conditions.
●
The start assist system cannot keep the ve-
hicle stationary in all conditions on a gradi-
ent or cause it to brake on steep downhill
gradients, e.g. if the road is slippery or icy.
205
Technical dataAdviceOperationEmergenciesSafety
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