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Operation
Driving instructions
Power assistance Brakes
Refer to the description of the Brake Assist
System (BAS) (
୴ page 84).
Warning! G
The brake system requires electrical energy
for operation.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. In such a case, the
red brake warning lamp (
୴ page 307) and
warning messages (
୴ page 319) in the in-
strument cluster come on while driving. To
brake, the driver must then apply signifi-
cantly greater brake pedal pressure and de-
press the pedal much further to obtain the
expected braking effect. If necessary, apply
full pressure to the brake pedal. Brakes are
only applied to the front wheels. Stopping
distance is increased! If there is a malfunc-
tion in the electro-hydraulic brake system,
we recommend that the vehicle be trans-
ported with all wheels off the ground using
flatbed or appropriate wheel lift/dolly
equipment.
A tow bar must be used if circumstances do
not permit the use of the recommended
towing methods and the vehicle requires
towing with all four wheels on the ground.
Towing the vehicle with all four wheels on
the ground is only permissible for distances
up to 30 miles (50 km) and at a speed not to
exceed 30 mph (50 km/h). For more infor-
mation, see “Towing the vehicle”
(
୴ page 373).
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
vehicle.
i
The brake system is designed to decelerate
your SLR from high speeds at the best possible
rate. Depending on the applied brake force,
speed, and ambient conditions, the brake sys-
tem may produce a squeak-type noise when you
apply the brakes at a moderate rate, e.g. at city
traffic. If you experience this noise, you should
occasionally test the effectiveness of the brakes
by applying above-normal braking pressure at
high speeds. Please perform this braking proce-
dure three times. This will also enhance the grip
of the brake pads. If the noise continuous,
contact an authorized Mercedes-Benz Center.
Warning! G
Make sure not to endanger any other road
users when carrying out these braking
maneuvers.