Mercedes-Benz SLR McLaren. Operator's Manual.

Practical hints
What to do if ...
Left display Right display Possible cause/
consequence
2 Brake wear
Visit
workshop
318
!
Brake pad thickness must be visually
checked by a qualified technician at the
intervals specified in the Maintenance
Booklet.
Warning! G
Have brake pad replacement and other work
on the electrohydraulic brake system carried
out by qualified technicians only. Contact
your Mercedes-Benz Center for further
information. The electrohydraulic 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
activated when the vehicle is
The brake pads have reached
their wear limit.
Possible solution
unlocked by remote control, when the driver
or passenger door is opened, when the
SmartKey in the starter switch is turned to
position 1, when the brake pedal is depressed
or when the parking brake is released.
Failure to deactivate the system prior to
maintenance will cause brake pistons to extend
and brake fluid to leak, which may result
in injuries (contusions and acid burns),
see “Electrohydraulic brake system”
( page 84).
Have the brake pads replaced immediately.