2012 MERCEDES-BENZ SLS AMG COUPE Owners Manual

Display messagesPossible causes/consequences and M Solutions! The indicator lamp (red) flashes.
The power supply for the electric parking brake was interrupted.XPull the electric parking brake handle.
or
XPull away carefully.
or
XPull the electric parking brake handle until the display message
disappears.! The indicator lamp (red) flashes and the warning lamp
(yellow) lights up.
The electric parking brake is malfunctioning.XSwitch off the ignition and turn it back on.XEngage or release the electric parking brake.
or
XPull away carefully.XVisit a qualified specialist workshop.! The warning lamp (yellow) lights up. In addition, the indicator
lamp (red) flashes for about 10 seconds after the electric parking
brake has been engaged or released. It then goes out or remains
lit.
The electric parking brake is malfunctioning, e.g. because of
overvoltage or undervoltage.XPull away carefully.XVisit a qualified specialist workshop.
If there is overvoltage or undervoltage:
XRemove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.XSwitch the ignition off and on, and then engage or release the
electric parking brake.
If this does not release the electric parking brake:
XDo not drive on.XConsult a qualified specialist workshop.Displays and operation167On-board computer and displaysZ

Display messagesPossible causes/consequences and M Solutions! The warning lamp (yellow) lights up. In addition, the indicator
lamp (red) flashes for about 10 seconds after the electric parking
brake has been engaged or released. It then goes out or remains
lit.
The electric parking brake has overheated.XAllow the vehicle to cool down. Do not engage or release the
electric parking brake during this time.XPrevent the vehicle from rolling away before you leave it.XWhen the vehicle has cooled down: switch the ignition off and
on again, then engage or release the electric parking brake.F (USA only)
! (Canada only)
Parking Brake
Inoperative! The warning lamp (yellow) lights up. In addition, the indicator
lamp (red) flashes for about 10 seconds after the electric parking
brake has been engaged or released. It then goes out or remains
lit.
The electric parking brake is malfunctioning.XSwitch the ignition off and on, and then engage the electric
parking brake.
If it is not possible to engage the electric parking brake:
XShift the transmission to P using the button on the center
console.XPrevent the vehicle from rolling away before you leave it.XVisit a qualified specialist workshop.F (USA only)
! (Canada only)
Turn On the
Ignition to
Release the
Parking Brake! The indicator lamp (red) flashes.
You attempted to release the electric parking brake while the
ignition was switched off.XSwitch on the ignition.168Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsF (USA only)
J (Canada only)
Check Brake Fluid
LevelGRisk of accident
There is not enough brake fluid in the brake fluid reservoir. In
addition, the J indicator lamp in the instrument cluster lights
up and a warning tone sounds.
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.
Do not add brake fluid. This will not rectify the malfunction.
#
Check Brake Pad
WearThe brake pads/linings have reached their wear limit.XVisit a qualified specialist workshop.GWARNING
Driving with the message Check Brake Fluid Level displayed can result in an accident. Have
your brake system checked immediately.
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.
Displays and operation169On-board computer and displaysZ

Safety systemsDisplay messagesPossible causes/consequences and M Solutions÷
ESC Inoperative
See Operator's
ManualGRisk of accident
ESP ®
, BAS and hill start assist are unavailable due to a
malfunction. In addition, the h and å warning lamps light
up in the instrument cluster.
The brake system continues to function normally, but without the
functions listed above.
XDrive on carefully.XVisit a qualified specialist workshop.÷
ESC Currently
Unavailable See
Operator's ManualGRisk of accident
ESP ®
, BAS and hill start assist are temporarily unavailable. The
self-diagnosis function might not be complete, for example. The
brake system continues to function normally, but without the
functions listed above. In addition, the h and å warning
lamps light up in the instrument cluster.
XCarefully drive a short distance making slight steering
movements at a speed above 12 mph (20 km/h) until the display
message disappears.Front Passenger
Airbag Enabled
See Operator's
ManualThe front-passenger air bag and front-passenger knee bag are
enabled during the journey, even though:
R a child, a small adult or an object weighing less than the
system's weight threshold is located on the front-passenger
seat.
R the front-passenger seat is unoccupied.
The system may detect objects or forces applying additional
weight on the seat.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XApply the parking brake.XSwitch the ignition off.XOpen the front-passenger door.XRemove the child and the child restraint system from the front-
passenger seat.170Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsXMake sure that there are no objects on the seat adding to the
weight.
The system may otherwise detect the additional weight and
interpret the seat occupant's weight as greater than it actually
is.XKeep the seat unoccupied, close the front-passenger door and
switch on the ignition.
Observe the 45(Y page 42) indicator lamp and the
multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the 45 indicator lamp must light up and remain lit. When
the indicator lamp is on, OCS (Y page 42) has disabled the front-
passenger air bag.
R the Front Passenger Airbag Enabled See Operator's
Manual or Front Passenger Airbag Disabled See
Operator's Manual display messages must not be shown in
the multifunction display. Wait for a period of at least
60 seconds until the necessary system checks have been
completed and to make sure that the display messages do not
appear in the multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the 45 indicator lamp remains lit
or goes out depends on how OCS classifies the occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
XVisit a qualified specialist workshop immediately.GWARNING
If the 45 indicator lamp remains off even after performing the above corrective steps, do
not have any children twelve years old and under and other small individuals use the front-
passenger seat until the system has been repaired.
Displays and operation171On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsFront Passenger
Airbag Disabled
See Operator's
ManualThe front-passenger air bag and the front-passenger knee bag are
deactivated during the journey even though an adult or a person
larger than a certain size is occupying the front-passenger seat. If
additional forces are applied to the seat, the system may interpret
the occupant's weight as lower than it actually is.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XApply the parking brake.XSwitch the ignition off.XHave the occupant get out of the vehicle.XKeep the seat unoccupied, close the front-passenger door and
switch on the ignition.
Observe the 45(Y page 42) indicator lamp and the
multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the 45 indicator lamp must light up and remain lit. When
the indicator lamp is on, OCS (Y page 42) has disabled the front-
passenger air bag.
R the Front Passenger Airbag Enabled See Operator's
Manual or Front Passenger Airbag Disabled See
Operator's Manual display messages must not be shown in
the multifunction display. Wait for at least 60 seconds until the
necessary system checks have been completed and to make
sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the 45 indicator lamp remains lit
or goes out depends on how OCS classifies the occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
XVisit a qualified specialist workshop immediately.GWARNING
If the 45 indicator lamp remains lit with an adult occupant on the front-passenger seat
even after performing the above corrective steps, do not have any passenger use the front-
passenger seat until the system has been repaired.
172Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsG
Tele Aid
InoperativeOne or more main features of the mbrace system are
malfunctioning.XHave the mbrace system checked immediately at a qualified
specialist workshop.6
SRS Malfunction
Service RequiredGRisk of injury
There is a malfunction in the SRS (Supplemental Restraint
System). The 6 warning lamp also lights up in the instrument
cluster.
XVisit a qualified specialist workshop.6
Front Left SRS
Malfunction
Service Required
or
Front Right SRS
Malfunction
Service RequiredGRisk of injury
SRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster.
XVisit a qualified specialist workshop.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.
Lights
i Display messages about LEDs:
The display message will only appear if all or a number of LEDs have failed.
Displays and operation173On-board computer and displaysZ

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