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Driving
Even though the brake assistance systems,
ABS, BAS, EDL, ASR and ESC, pro
vide more
security, do not take unnecessary risks
while driving.
●
Brake assistance systems can not over-
come the laws of physics. Even with ESC
and other systems, slippery and wet roads
will always be dangerous.
●
Driving to quickly on wet ground can re-
sult in the wheels losing contact with the
ground in an effect known as “aquaplan-
ing”. Without adherence, it is impossible to
brake, steer or control the vehicle.
●
Brake assistance systems cannot avoid
accidents if, for example, the driver does
not respect safety distances or drives to
quickly in difficult conditions.
●
Even though brake assistance systems
are extremely effective and help control
the vehicle in difficult situations, remember
that the vehicle stability depends on tyre
grip.
●
When accelerating on a slippery surface,
for example on ice or snow, press the ac-
celerator carefully. The wheels can still slip
even with brake assistance systems result-
ing in loss of vehicle control.
WARNING
The effectiveness of ESC can be consider-
ably reduced if other components and sys-
tems aff
ecting driving dynamics are not
maintained or are not functioning correct-
ly. This includes, among others, brakes,
tyres and other syst
ems already men-
tioned.
●
Remember that changing and fitting oth-
er components to the vehicle can affect
operation of the ABS, BAS, ASL EDL and
ESC.
●
Changes to the vehicle suspension or us-
ing unapproved wheel/tyre combinations
can affect operation of the ABS, BAS, ASL
EDL and ESC, as well as their effectiveness.
●
Likewise, the effectiveness of ESC de-
pends on the use of suitable tyres
›››
page 338.
Note
●
To ensure that the ESC and ASR w
ork
properly, all four wheels must be fitted with
identical tyres. Any differences in the roll-
ing radius of the tyres can cause the sys-
tem to reduce 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. 240
Detailed view of the centre console:
butt
on used t
o s
witch ASR on and off (vehicles
with ESC)
The electronic stability control ESC consists
of ABS, EDL and ASR and only w
orks when
the engine is running.
The ASR can be s
wit
ched off while the engine
is running by pressing the button
›››
Fig. 240. 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. 240.
246
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