brake MERCEDES-BENZ SLS AMG ROADSTER 2012 Workshop Manual

Display messagesPossible causes/consequences and M Solutionsb
Check Left Low Beam
or
Check Right Low
BeamThe left or right-hand low-beam headlamp does not light up. In
addition, the low-beam headlamp is also inoperative.XVisit a qualified specialist workshop.b
Auto Lamp Function
InoperativeThe light sensor is defective.
USA only:XSwitch off the daytime running lamps in the on-board computer
( Y page 157).XSwitch the lights on and off using the light switch.b
Check Rear Left
Turn Signal
or
Check Rear Right
Turn SignalThe LEDs in the rear left or right-hand indicator lamp do not light
up.XVisit a qualified specialist workshop.b
Check Left Mirror Turn
Signal
or
Check Right Mirror
Turn SignalNone of the LEDs in the left or right-hand exterior mirrors light up.XVisit a qualified specialist workshop.b
Check Front Left
Turn Signal
or
Check Front Right
Turn SignalThe LEDs in the front left or right-hand indicator lamp do not light
up.XVisit a qualified specialist workshop.b
Check Center Brake
LampNone of the LEDs in the high-mounted brake lamp light up.XVisit a qualified specialist workshop.174Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M Solutionsb
Check Left Brake
Lamp
or
Check Right Brake
LampThe left or right-hand brake light LEDs do not light up.XVisit a qualified specialist workshop.b
Check Left Tail
Lamp
or
Check Right Tail
LampThe left or right-hand tail lamp LEDs do not light up.XVisit a qualified specialist workshop.b
Check Left High
Beam
or
Check Right High
BeamThe left or right-hand high-beam headlamp does not light up.XVisit a qualified specialist workshop.b
Check Left License
Plate Lamp
or
Check Right
License Plate LampThe left or right-hand license plate lamp does not light up.XReplace the bulb ( Y page 99).b
Backup lightNone of the LEDs in the backup lamp light up.XVisit a qualified specialist workshop.b
Left daytime
running lamp
or
Right daytime
running lampThe LEDs in the left or right-hand daytime running lamp do not
light up. As a result, the corresponding side/standing lamp has
failed.XVisit a qualified specialist workshop.Displays and operation175On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsBlind Spot Assist
InoperativeBlind Spot Assist is defective.
The yellow 9 indicator lamps also light up in the exterior
mirrors.XVisit a qualified specialist workshop.Blind Spot Assist
Currently
Unavailable See
Operator's ManualBlind Spot Assist is temporarily inoperative if:
R the sensors are dirty.
R its function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
The yellow 9 indicator lamps also light up in the exterior
mirrors.
Blind Spot Assist is operational again and the display message
disappears if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detects that the sensors are fully available again.
R the radar sensor system is back within the operating
temperature range.
If the display message continues to be displayed:XClean the sensors ( Y page 228).XRestart the engine.
Tires
GWARNING
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.
GWARNING
Follow recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect
handling and fuel economy, and are more likely to fail from being overheated.
Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear
unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are
more likely to become punctured or damaged by road debris, potholes etc.
Displays and operation181On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsK
Convertible Top
Operation Possible
to 31 mphIf you are traveling at more than 31 mph (50 km/h), you cannot
open or close the soft top.XFully open or close the soft top ( Y page 78).K
Convertible top
Opening/Closing
Not FinishedThe soft top is not fully opened or closed. The hydraulics are
depressurized.XFully open or close the soft top ( Y page 78).K
Open/Close
Convertible Top
CompletelyThe roof is not locked. If you are traveling at more than 31 mph
(50 km/h), you cannot open or close the soft top.XIf you are traveling at more than 31 mph (50 km/h), slow down.XPush or pull the soft-top switch (Y page 78) until the soft top is
fully open or closed.K
Convertible Top in
Operation Please
WaitThe on-board voltage is too low.XStart the engine.The soft top has been opened and closed several times in a row.
The soft-top drive has been switched off automatically for safety
reasons.
You can open and close the soft top again after approximately ten
minutes.XSwitch off the ignition and turn it back on.XRepeat the opening or closing procedure ( Y page 78).K
Depress brakeYou have attempted to close the soft top with the soft top switch
while the vehicle was stationary.XDepress the brake pedal.XPress the soft-top switch until the soft top is completely closed.¥
Check Washer FluidThe washer fluid level in the washer fluid reservoir has dropped
below the minimum.Xadd washer fluid ( Y page 221).184Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M Solutions+
Insert KeyThe KEYLESS-GO start function is temporarily malfunctioning or
is defective. A warning tone also sounds.XInsert the SmartKey into the ignition lock and turn it to the
desired position ( Y page 115).+
Take Your Key From
IgnitionThe SmartKey is in the ignition lock.XRemove the SmartKey.
Transmission
Display messagesPossible causes/consequences and M SolutionsApply Brake to
Shift from
'P'You have attempted to move the transmission selector lever to
position D, R or N without depressing the brake pedal.XDepress the brake pedal.Apply Brake
and Start Engine
to Disengage 'P'When the engine is switched off, it is not possible to shift out of
park position P.XDepress the brake pedal and start the engine.Start Engine
to Engage GearThe gear cannot be engaged when the engine is switched off.XDepress the brake pedal and start the engine.Depress Brake
to Start EngineYou cannot start the engine. The engine was switched off in
position D or R.XDepress the brake pedal and start the engine.Door Open Vehicle
Not in 'P'The driver's door is open and the transmission is in position R, N
or D.
A warning tone also sounds.XShift the transmission to P using the button on the center
console.XPress the electric parking brake handle.186Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsService Required
Do Not Shift Gears
Visit DealerYou cannot change gear due to a malfunction.
A warning tone also sounds.
If transmission position D is selected:XDo not switch off the engine.XDrive to a qualified specialist workshop without shifting the
transmission from position D.
If transmission position R, N or P is selected:
XMake sure that the electric parking brake is applied.XPrevent the vehicle from rolling away before you leave it
( Y page 236).XNotify a qualified specialist workshop or breakdown service.
If no transmission position and no drive program is displayed:
XMake sure that the electric parking brake is applied.XPrevent the vehicle from rolling away before you leave it
( Y page 236).XNotify a qualified specialist workshop or breakdown service.Only select Park
(P)
when vehicle is
stationaryThe vehicle is moving.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XShift the transmission to P using the button on the center
console.backing up not
poss.
Consult workshopThe sub geartrain with the even gears has failed. You can no longer
engage reverse gear. The smoothness of the gear change is
restricted. The transmission is in emergency mode.XVisit a qualified specialist workshop.j
Parking lock
malfunct. Apply
parking brakeTransmission position P cannot be selected.XMake sure that the electric parking brake is applied.XPrevent the vehicle from rolling away before you leave it
( Y page 236).XVisit a qualified specialist workshop. Have the vehicle
transported on a recovery vehicle or towed with the rear axle
raised ( Y page 244).Displays and operation187On-board computer and displaysZ

Display messagesPossible causes/consequences and M Solutionsd
Stop Engage PThe transmission is faulty. The vehicle loses drive and rolls to a
standstill.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XMake sure that the electric parking brake is applied.XPrevent the vehicle from rolling away before you leave it
( Y page 236).XConsult a qualified specialist workshop.d
Transmission oil
cooling
MalfunctionThe transmission coolant pump is faulty. The transmission may
overheat.XIn the on-board computer, select the AMG menu and check the
transmission oil temperature.XAvoid excessive loading, e.g. due to dynamic driving.XAt transmission oil temperatures under 248 ‡(120 †), drive to
the nearest qualified specialist workshop.d
Trans. oil
overheated Drive
on with careThe transmission oil has overheated.
Manual drive program M and shift range restriction are no longer
available. Only drive program C is still available. The engine output
is reduced according to the degree of overheating.XAllow the transmission oil to cool by adopting a defensive driving
style.188Displays and operationOn-board computer and displays

Warning and indicator lamps in the instrument cluster
BrakesProblemPossible causes/consequences and M Solutions$
(USA
only)
J
(Canada
only)The red brake
system
warning lamp
comes on
while the
engine is
running. A
warning tone
also sounds.GRisk of accident
There is not enough brake fluid in the brake fluid reservoir.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.XConsult a qualified specialist workshop immediately.XObserve the additional messages in the multifunction display
( Y page 165).
Do not add brake fluid. This will not rectify the malfunction.
F
(USA
only)
!
(Canada
only)The indicator
lamp for the
electric
parking brake
flashes and/
or the yellow
warning lamp
for the
electric
parking brake
lights up.GRisk of accident
The electric parking brake is temporarily malfunctioning or
defective.
XObserve the additional display messages in the multifunction
display.GWARNING
Driving with the brake warning lamp illuminated can result in an accident. Have your brake system
checked immediately if the brake warning lamp stays on. Do not add brake fluid before checking
the brake system.
Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the
brake fluid catching fire. You can be seriously burned.
190Displays and operationOn-board computer and displays

Safety systemsProblemPossible causes/consequences and M Solutions!The yellow ABS
warning lamp is
lit while the
engine is
running.GRisk of accident
ABS (Anti-lock Brake System) is deactivated due to a malfunction.
Therefore ESP ®
(Electronic Stability Program), BAS (Brake Assist)
and hill start assist are also deactivated, for example.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
XObserve the additional messages in the multifunction display
( Y page 170).XDrive on carefully.XVisit a qualified specialist workshop.h
å
!The yellow ESP ®
and ESP ®
OFF
warning lamps
and the yellow
ABS warning
lamp are lit while
the engine is
running.GRisk of accident
ABS and ESP ®
are faulty. Other systems, e.g. BAS and hill start
assist, are unavailable due to a malfunction. The brake system
continues to function normally, but without the functions listed
above. The wheels could therefore lock if you brake hard, for
example.
XObserve the additional messages in the multifunction display
( Y page 170).XDrive on carefully.XVisit a qualified specialist workshop.hThe yellow ESP ®
warning lamp
flashes while the
vehicle is in
motion.GRisk of accident
ESP ®
or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin.
XWhen pulling away, only depress the accelerator pedal as far as
necessary.XRelease the accelerator pedal while the vehicle is in motion.XAdapt your driving style to suit the road and weather conditions.XDo not deactivate ESP ®
.
For exceptions: ( Y page 56).192Displays and operationOn-board computer and displays

ProblemPossible causes/consequences and M SolutionsMThe yellow
SPORT handling
mode warning
lamp is lit while
the engine is
running.GRisk of accident
SPORT handling mode is activated. ESP ®
only stabilizes the vehicle
in extreme situations. ESP ®
intervention may not be able to
provide enough assistance in such situations, and the vehicle may
start to skid.
XReactivate ESP ®
.
For exceptions: ( Y page 56).h
åThe yellow ESP ®
and ESP ®
OFF
warning lamps
are lit while the
engine is
running.GRisk of accident
ESP ®
is not available due to a malfunction. ESP ®
will not stabilize
the vehicle if it starts to skid or if a wheel starts to spin. The brake
system continues to function normally, but without ESP ®
.
XDrive on carefully.XVisit a qualified specialist workshop.6The red SRS
warning lamp is
lit while the
engine is
running.GRisk of injury
The restraint systems are malfunctioning. The air bags or ETDs
may either be triggered unintentionally or, in the event of an
accident, not be triggered at all.
XVisit a qualified specialist workshop immediately.GWARNING
In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be
operational.
For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center
immediately to have the system checked. Otherwise the SRS may not be activated when needed
in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and
unnecessarily which could also result in injury.
Displays and operation193On-board computer and displaysZ