2006 MERCEDES-BENZ SLR brake

318 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
2
Brake wear
Visit
workshop
The brake pads have reached
their wear limit.

Have the brake pads replaced immediately.
!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 car-
ried out by qualified technicians only. Con-
tact your Mercedes-Benz Center for further
information. The electrohydraulic brake sys-
tem must be deactivated prior to working on
the system. High pressure is intermittently
built up in the system as part of its automat-
ic self-test. In addition, the system is auto-
matically activated when the vehicle is
unlocked by remote control, when the driver
or passenger door is opened, when the
SmartKey in the starter switch is turned to
position1, when the brake pedal is de-
pressed or when the parking brake is re-
leased.
Failure to deactivate the system prior to
maintenance will cause brake pistons to ex-
tend and brake fluid to leak, which may re-
sult in injuries (contusions and acid burns),
see “Electrohydraulic brake system”
(page 84).

319 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
T
Reduced
braking power
Depress brake
pedal fully
The electrohydraulic brake sys-
tem is in emergency operation
mode. Considerably greater
brake pedal force is required
and the pedal travel is longer.
The stopping distance is in-
creased.
The maximum speed is limited
to 55 mph (90 km/h).

Do not drive any further.

Stop the vehicle immediately in a safe location.

Prevent the vehicle from rolling away by blocking the
wheels with wheel chocks or other sizable heavy objects.

Notify an authorized Mercedes-Benz Center.
or

Call for Roadside Assistance.
Failure to follow these instructions increases the risk of an
accident.

320 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
;
(USA only)
3
(Canada only)
Reduced
brake effect
Visit workshop
The electrohydraulic
brake system is in emer-
gency operation mode.
Considerably greater
brake pedal force is re-
quired and the pedal
travel is longer. The stop-
ping distance is in-
creased.

Continue driving with added caution.

Visit an authorized Mercedes-Benz Center immedi-
ately. Adjust driving to be consistent with reduced
braking responsiveness.
Failure to follow these instructions increases the risk of
an accident.
Increased
stopping distance
Visit workshop
Warning!
G
Driving while these messages are displayed
can result in an accident. Have your brake
system checked immediately.
If there is a malfunction in the electrohy-
draulic brake system, we recommend that
the vehicle be transported 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”
(page 360).
If the electrohydraulic brake system enters
its emergency operation mode, the driver
must apply significantly greater brake pedal
pressure and depress the pedal much fur-
ther than normal to obtain braking effect.
If necessary, apply full pressure to the brake
pedal. Stopping distance is increased!

321 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
;
(USA only)
3
(Canada only)
Reduced
brake effect
Start engine
The battery has insufficient
voltage and cannot supply suffi-
cient power to the electrohy-
draulic brake system.

Start the engine.
As soon as the engine is running, the message
disappears.
Increased
stopping distance
Start engine
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide, and inhaling it can cause uncon-
sciousness and possible death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated.

322 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
;
(USA only)
3
(Canada only)
Brakes overheated
Drive on, but with
even greater care
The brake system is overheated
due to an excessive load on the
brakes.

Relieve the load on the brake system.

Drive more smoothly and think ahead to avoid
unnecessary braking.

When driving down steep grades, shift into a
lower gear to use the engine’s braking power
(page 170).

Cautiously continue driving so that the air
stream will cool down the brakes.
Release
parking brake
You are driving with the parking
brake set.

Release the parking brake (
page 50).
Service brake
Visit
workshop
There are malfunctions, but the
electrohydraulic brake system
is operating normally.

Visit an authorized Mercedes-Benz Center im-
mediately.

330 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
.
3rd brake lamp
The high mounted brake lamp
is malfunctioning.

Visit an authorized Mercedes-Benz Center as soon as
possible.
Brake lamp
Left
Substitute
bulb on
The left brake lamp is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have blown.

Visit an authorized Mercedes-Benz Center as soon as
possible.
Brake lamp
Right
Substitute
bulb on
The right brake lamp is mal-
functioning. This message will
only appear if a critical number
of LEDs have blown.

Visit an authorized Mercedes-Benz Center as soon as
possible.
Brake lamp
Drive to
workshop
Brake lamp illumination is de-
layed or lamp is permanently
on.

Visit an authorized Mercedes-Benz Center as soon as
possible.
Front foglamp
Left
The left front fog lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Center as soon as
possible.
Front foglamp
Right
The right front fog lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Center as soon as
possible.
Rear foglamp
Left
The left rear fog lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Center as soon as
possible.

335 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
H
Tire pressure
Caution
Tire defect
One or more tires is deflating.

Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic
situation around you.

Temporarily repair tire using TIREFIT (
page 351) or
contact Roadside Assistance. If tire cannot be tempo-
rarily repaired using TIREFIT, contact Roadside
Assistance.

Have the damaged wheel repaired or replaced at an
authorized Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle.
Continued driving with a flat tire will cause
excessive heat build-up and possibly a fire.
Warning!
G
Have worn or damaged tires replaced in
pairs (front pair or rear pair) an make sure
the tires rotate in the direction specified
(page 257). Otherwise, the driving stabili-
ty of the vehicle will be adversely affected,
especially when driving at high speeds.

336 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
H
Tire pressure
Check tires
The tire inflation
pressure in one or
more tires is already
below the minimum
value.
The tire inflation
pressure in one or
more tires is low.

Carefully bring the vehicle to a halt, avoiding abrupt steering and
braking maneuvers. Observe the traffic situation around you.

Check the tires. If no damage visible, check and correct tire infla-
tion pressure as required.

Temporarily repair tire using TIREFIT (
page 351) or contact
Roadside Assistance. If tire cannot be temporarily repaired using
TIREFIT, contact Roadside Assistance.

Have the damaged wheel repaired or replaced at an authorized
Mercedes-Benz Center.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle.
Continued driving with a flat tire will cause
excessive heat build-up and possibly a fire.
Warning!
G
Have worn or damaged tires replaced in
pairs (front pair or rear pair) an make sure
the tires rotate in the direction specified
(page 257). Otherwise, the driving stabili-
ty of the vehicle will be adversely affected,
especially when driving at high speeds.