2015 MERCEDES-BENZ SL-Class warning light

Display messages
Possible causes/consequences and
0050
0050Solutions 0027(USA
only)004D
(Canada
only)
Check Brake Fluid Check Brake Fluid
Level Level There is not enough brake fluid in the brake fluid reservoir.
In addition, the
0027(USA only)/ 004D(Canada only) warning
lamp lights up in the instrument cluster and a warning tone
sounds.
G WARNING
The braking effect may be impaired.
There is a risk of an accident. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 171).
X Consult a qualified specialist workshop.
X Do not add brake fluid. This does not correct the malfunction. 0026
Check Brake Pad Check Brake Pad
Wear Wear The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. 0053
mbrace Inoperative mbrace Inoperative One or more main features of the mbrace system are malfunc-
tioning.
X Have the mbrace system checked immediately at a qualified
specialist workshop. PRE-SAFE PRE-SAFE
Inoperative See Inoperative See
Operator's Manual Operator's Manual
Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. air bags, remain available.
X Visit a qualified specialist workshop immediately. 246
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 0075
SRS Malfunction SRS Malfunction
Service Required Service Required The restraint system is faulty. The
0075warning lamp also lights
up in the instrument cluster.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig- gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
For further information about the restraint system, see
(Y page 50). 0075
Front Front
Left
LeftMalfunc‐
Malfunc‐
tion Service
tion Service
Required Required orFront
Front
Right Malfunction
Right Malfunction
Service Required Service Required The restraint system has malfunctioned at the front on the left or
right. The 0075warning lamp also lights up in the instrument clus-
ter.
G WARNING
The air bags or Emergency Tensioning Devices may either be trig- gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop. 0075
Left Side Curtain Left Side Curtain
Airbag Airbag
Malfunction
Malfunction
Service Required
Service Required
or Right Side Cur‐ Right Side Cur‐
tain Airbag Mal‐
tain Airbag Mal‐
function Service function Service
Required Required There is a malfunction in the left-hand and/or right-hand head bag.
The 0075 warning lamp also lights up in the instrument cluster.
G WARNING
The left or right head bag may either be triggered unintentionally
or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X Visit a qualified specialist workshop. 248
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions Front-Passenger
Front-Passenger
Airbag Disabled Airbag Disabled
See See
Operator's
Operator's Man‐
Man‐
ual
ual The front-passenger air bag and front-passenger knee bag are
deactivated during the journey, although:
R an adult
or
R a person larger than a certain size is occupying the front-
passenger seat
If additional forces are applied to the seat, the system may inter-
pret the occupant's weight as lower than it actually is.
G WARNING
The front-passenger front air bag and front passenger knee bag
may not be triggered in the event of an accident.
There is an increased risk of injury.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 171).
X Switch the ignition off.
X Have the occupant get out of the vehicle.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction display and check the fol-
lowing:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF indicator lamp must light up
and remain lit. If the indicator lamp is on, OCS has deactivated
the front-passenger air bag and front-passenger knee bag
(Y page 59).
R the Front
Front Passenger Passenger Airbag
AirbagEnabled
Enabled See
See Operator's
Operator's
Manual
Manual orFront
Front Passenger
Passenger Airbag
AirbagDisabled
Disabled See
SeeOper‐
Oper‐
ator's Manual
ator's Manual display messages must not be shown in the
multifunction display.
X Wait for a period of at least 60 seconds until the necessary sys-
tem checks have been completed.
X Make sure that the display messages do not appear in the mul-
tifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF 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 cor- rectly. Display
messages
249On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see (Y page 59). Front-Passenger
Front-Passenger
Airbag Enabled Airbag Enabled
See See
Operator's
Operator's Man‐
Man‐
ual
ual The 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 sys-
tem's weight threshold is located on the front-passenger seat
or
R the front-passenger seat is unoccupied
The system may detect objects or forces applying additional
weight on the seat.
G WARNING
The front-passenger front air bag and front-passenger knee bag
may be triggered unintentionally.
There is an increased risk of injury. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 171).
X Switch the ignition off.
X Open the front-passenger door.
X Remove the child and the child restraint system from the front-
passenger seat.
X Make 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.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction display and check the fol-
lowing:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF indicator lamp must light up
and remain lit. If the indicator lamp is on, OCS has deactivated
the front-passenger air bag and front-passenger knee bag
(Y page 59).
R the Front
Front Passenger Passenger Airbag
AirbagEnabled
Enabled See
SeeOperator's
Operator's
Manual
Manual orFront
Front Passenger
Passenger Airbag
AirbagDisabled
Disabled See
SeeOper‐
Oper‐ 250
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 0049
Check Check
Left
LeftDaytime
Daytime
Running Light
Running Light or
Check Right Day‐
Check Right Day‐
time Running Light time Running Light The left-hand or right-hand daytime running lamp is faulty.
X Visit a qualified specialist workshop. 0049
Active Headlamps Active Headlamps
Inoperative Inoperative The active light function is defective.
X Visit a qualified specialist workshop. 0049
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is defective.
X Visit a qualified specialist workshop. 0049
Auto Auto
Lamp
LampFunction
Function
Inoperative
Inoperative The light sensor is defective.
X Visit a qualified specialist workshop. 0049
Switch Off Lights Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X Turn the light switch to 0058.Adaptive Highbeam Adaptive Highbeam
Assist Inoperative Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Adaptive Highbeam Adaptive Highbeam
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily inoper-
ative. Possible causes are:
R the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
X Clean the windshield.
If the system detects that the camera is fully operational again, the
Adaptive Highbeam Assist Now Available
Adaptive Highbeam Assist Now Available message is dis-
played.
Adaptive Highbeam Assist is operational again. Display
messages
253On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 003D
See See
Operator's
Operator's Man‐
Man‐
ual
ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
! Do not continue driving. The engine could otherwise overheat.
X Secure the vehicle against rolling away (Y page 171).
X Consult a qualified specialist workshop. 003D
Stop Vehicle See Stop Vehicle See
Operator's Manual Operator's Manual The battery is no longer being charged and the battery charge level
is too low.
A warning tone also sounds.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 171).
X Observe the instructions in the display message 003DSee
See
Operator's Manual Operator's Manual .
X Consult a qualified specialist workshop. 003D
Start Engine See Start Engine See
Operator's Manual Operator's Manual The engine is switched off and the battery charge level is too low.
X Switch off electrical consumers that you do not need, such as
the rear window defroster and interior lighting.
X Leave the engine running for a few minutes or drive a long dis-
tance.
The battery is being charged. Display
messages
255On-board computer and displays Z

Driving systems
Display messages
Possible causes/consequences and
0050
0050Solutions ABC
ABC
Malfunction Malfunction The ABC function (Active Body Control) is restricted.
G WARNING
The vehicle's suspension tuning characteristics may be affected.
There is a risk of an accident. X Do not drive at speeds above 50 mph (80 km/h).
X Visit a qualified specialist workshop. ABC ABC
Malfunction Stop Malfunction Stop
Vehicle Vehicle The vehicle level of the ABC is too low.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
After a few seconds, the vehicle level is adjusted and the display
message disappears. The vehicle is leaking oil.
The display message is shown continuously.
G WARNING
The vehicle's suspension tuning characteristics may be affected.
There is a risk of an accident. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 171).
X Notify a qualified specialist workshop or breakdown service. ABC is malfunctioning.
The display message is shown continuously.
G WARNING
The suspension tuning characteristics are thus affected.
There is a risk of an accident. X Do not drive at speeds above 50 mph (80 km/h).
X Make only slight steering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement
is too large.
X Listen for scraping sounds.
X Visit a qualified specialist workshop. Display
messages
257On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00AD
Attention Assist: Attention Assist:
Take a Break! Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue
or a lack of concentration on the part of the driver. A warning tone also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get enough rest. 00AD
Attention Assist Attention Assist
Inoperative Inoperative ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop. 00D9
Off Off The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later (Y page 191).Radar Radar
Sensors
Sensors Deac‐
Deac‐
tivated See Opera‐
tivated See Opera‐
tor's Manual tor's Manual The radar sensor system is deactivated.
X Switch on the radar sensor system (Y page 235).Spotlight Inopera‐
Spotlight Inopera‐
tive tive Night View Assist Plus is deactivated and temporarily inoperative.
Possible causes are:
R the windshield in the camera's field of vision is dirty.
R the camera in the radiator trim is dirty.
R visibility is impaired due to heavy rain, snow or fog.
R the outside temperature is too high.
X Clean the windshield.
X Clean the camera in the radiator trim.
If the system has been switched off due to excessive outside tem-
peratures, the system will switch back on automatically once it has cooled down.
If the system detects that the camera is fully operational, the dis- play message disappears.
Night View Assist Plus is operational again. Night View Assist Plus is defective.
X Visit a qualified specialist workshop. 258
Display
messagesOn-board computer and displays