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Operation
●
Likewise, the effectiveness of ESC depends
on the use of suitable tyres ››› page 231.
Note
●
To ensure 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.
Turning on and off the ASR
Fig. 134 Detailed view of the centre console:
button used to switch ASR on and off (vehi-
cles with ESC)
The electronic stability control ESC consists
of ABS, EDL and ASR and only works when
the engine is running.
The ASR can be switched off while the engine
is running by pressing the
OFF
››› Fig. 134
button. 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. 134
.
St
ar
t assist systems
Introduction
WARNING
The intelligent technology in the start assist
systems 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.
Auto Hold function*
Fig. 135 Detailed view of the centre console:
Auto Hold button
The control lamp on the button switches on
when the Auto Hold function is on.
When the Auto Hold function is on, this helps
the driver if they must regularly stop the vehi-
cle or if they must stop with the engine run-
ning for prolonged periods, for example, on
hills, before a traffic light or in traffic jams
with continuous stopping and starting.
156
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