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Assist systems
Brake assist systems
Introduction
This chapter contains information on the following subjects:
WARNING
A lack of fuel can cause irregular engine running or cause the engine to shut
■
down. The brake assist systems would then fail to function - risk of accident!
Adjust the speed and driving style to the current visibility, weather, road and
■
traffic conditions. The increased safety offered by the brake assist systems
must not tempt you to take greater risks than otherwise - risk of accident!
In the event of an ABS fault, visit a specialist garage immediately. Adjust
■
your style of driving according to the damage to the ABS as you will not know
how great the damage is and the limitation it is placing on the braking effi-
ciency.
CAUTION
All four wheels must be fitted with the same tyres approved by the manufactur-
■
er to ensure the brake assist systems operate correctly.
Changes to the vehicle (e.g. to the engine, brakes, chassis) can influence the
■
functionality of the brake assist systems
Note
If a fault occurs in the ABS system, the ESC, ASR and EDL also do not work. An
ABS fault is indicated with the warning light
132
Driving
» page
200.
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17.
Electronic Stability Control (ESC)
132
133
133
First read and observe the introductory information and safety warn-
134
ings
on page 132.
134
134
The ESC system helps to maintain control of the vehicle in situations where it is
134
being operated at its dynamic limits, such as a sudden change to the direction of
135
travel. The risk of skidding is reduced and your car thus offers greater driving sta-
bility depending on the conditions of the road surface.
The ESC system is automatically activated each time the ignition is switched on.
The direction which the driver wishes to take is determined based on the steering
angle and the speed of the vehicle and is constantly compared with the actual
behaviour of the vehicle. If differences exist, such as the car beginning to skid,
the ESC system will automatically brake the appropriate wheel.
During an intervention of the system, the warning light
ment cluster.
The following systems are integrated into the Electronic Stability Control (ESC).
›
Antilock Brake System (ABS)
›
Traction control (TCS)
» page
›
Electronic Differential Lock (EDL and XDS)
›
Driver Steering Recommendation (DSR)
›
Hydraulic Brake Assist (HBA)
›
Hill Hold Control (HHC)
» page
›
Multicollision brake
» page
›
Trailer stabilisation (TSA)
The ESC system cannot be deactivated. Only some systems with built-in ESC
can be deactivated or activated.
Fig. 128
ESC button
flashes in the instru-
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133.
133.
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134.
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134.
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134.
134.
135.
» page
168, Driving with a trailer.
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