STARTING AND DRIVING
Before starting the engine with the
Brake functions
Foot brake
alcohol lock*
The car's brakes are used to reduce the
speed or prevent the car from rolling.
In addition to the foot brake and parking
brake, the car is equipped with several auto-
matic brake assist functions. These can assist
the driver by not needing to keep his/her foot
on the brake pedal when at a traffic light,
when starting on an uphill gradient or when
driving on a downhill gradient.
The foot brake is part of the brake system.
The car is equipped with two brake circuits. If
a brake circuit is damaged, the brake pedal
may engage deeper. Higher pressure on the
pedal will therefore be needed to produce the
normal braking effect.
The alcohol lock is activated automatically
and is then ready for use when the car is
opened.
To bear in mind
In order to obtain correct function and as
accurate a measurement result as possible:
The driver's brake pedal pressure is assisted
by a brake servo.
Avoid eating or drinking approx. 5 minutes
before the breath test.
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Depending on the car's equipment, the follow-
ing auto braking functions are available:
WARNING
Avoid excess windscreen washing - the
alcohol in the washer fluid may result in an
incorrect measurement result.
•
The brake servo only works when the
engine is running.
Automatic brake when stationary (Auto
Hold)
•
Hill start assist (Hill Start Assist)
Auto braking after a collision
City Safety
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If the foot brake is used when the engine is
switched off then the pedal will feel stiff and a
higher pedal pressure must be used to brake
the car.
After a completed period of driving, the
engine can be restarted within 30 minutes
without a new breath test.
Hill descent control (Hill Descent Control)*
In very hilly terrain or when driving with a
heavy load the brakes should be relieved by
using engine braking in manual gearshift
mode. Engine braking is most efficiently used
if the same gear is used downhill as up. Use
drive mode Off Road* for increased engine
braking while driving on steep downhill gradi-
ents at low speeds.
Related information
Related information
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Bypass of the alcohol lock* (p. 400)
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Parking brake (p. 404)
Alcohol lock* (p. 400)
Automatic braking when stationary
(p. 407)
Starting the car (p. 396)
Ignition positions (p. 398)
Auto braking after a collision (p. 409)
Help when starting on a hill (p. 408)
City Safety™ (p. 273)
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Anti-lock braking system
The car has anti-lock brakes (ABS2), which
prevents the wheels from locking while brak-
Hill descent control* (p. 428)
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* Option/accessory. 401
