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Operation
Driving instructions
Power assistance
Warning!
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle.
Brakes
Warning!
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
294
Resting your foot on the brake pedal will
cause excessive and premature wear of the
G
brake pads.
It can also result in the brakes overheating,
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.
!
Because the ESP
the engine must be shut off when
the parking brake is being tested on a brake
test dynamometer
the vehicle is being towed with the front axle
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raised
Active braking action through the ESP
erwise seriously damage the brake system.
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
ject to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.
Warning!
Make sure not to endanger any other road
®
operates automatically,
users when carrying out these braking
maneuvers.
Refer to the description of the Brake Assist
System (BAS) ( page 90).
Brake pad wear or a leak in the system may
®
may oth-
be the reason for low brake fluid level in
the reservoir.
The brake fluid level in the reservoir may
be too low if the brake warning lamp in the
instrument cluster comes on and an
acoustic warning sounds although the
parking brake is released ( page 358).
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