Mercedes-Benz SL-Class - Manual (Page 88)

86
Safety and Security
Driving safety systems
The SBC brake system is automatically
activated when you
ț unlock the vehicle with the SmartKey
or the SmartKey with KEYLESS-GO*
ț open the driver’s or passenger door
ț turn the SmartKey in the starter switch
to position 1
ț in vehicles with KEYLESS-GO*, press
the start/stop button on the gear se-
lector lever once
ț depress the brake pedal
ț release the parking brake
i
If the SBC brake system is activated as
the brake pedal is first depressed, you
may feel a reduced pedal resistance
and longer pedal travel than normal.
When releasing the pedal, you may also
feel the brake pedal pulsate and you
may hear a sound which is caused by
the activation of the SBC brake system
pump. This is normal and not an indica-
tion of a malfunction. Pedal travel re-
turns to normal when you release the
brake pedal and the sound soon ceas-
es.
If you experience the above while driv-
ing and the red brake warning lamp
(
୴ page 326) illuminates and/or warn-
ing messages appear in the multifunc-
tion display (
୴ page 347), the brake
system is malfunctioning. Follow the in-
structions of the warning message(s)
and have the brake system checked
immediately.
Warning!
G
Have brake pad replacement and other work
on the SBC brake system carried out by
qualified technicians only. Contact an au-
thorized Mercedes-Benz Center for further
information. The SBC brake system must be
deactivated prior to working on the system.
High pressure is intermittently built up in the
system as part of its automatic self-test. In
addition, the system is automatically acti-
vated when the vehicle is unlocked by re-
mote control, when the driver or passenger
door is opened, when the SmartKey in the
starter switch is turned to position 1 or the
KEYLESS-GO* start/stop button is pressed
once, when the brake pedal is depressed or
when the parking brake is released. Failure
to deactivate the system prior to mainte-
nance will cause brake pistons to extend
and brake fluid to leak, which may result in
injuries (contusions and acid burns). Extend-
ed brake pistons may also cause injury.