2015 MERCEDES-BENZ SLK-CLASS ROADSTER Owners Manual

Display messagesPossible causes/consequences andMSolutions
Front Passenger
Airbag Disabled
SeeOperator'sManZ
ual
The front-passenger air bag and front-passenger knee bag are
deactivated during the journey, although:
R an adult or
R a person of the corresponding stature is on 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.
GWARNING
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 ( Ypage 161).
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 then light
up and remain lit. If the indicator lamp is on, OCS has disabled the front-passenger front air bag and front-passenger knee
bag ( Ypage 49)
R the
FrontPassengerAirbagEnabledSeeOperator's
ManualorFrontPassengerAirbagDisabledSeeOperZ
ator's Manualdisplay 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 messages223
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see ( Ypage 49).
Front Passenger
Airbag Enabled
SeeOperator'sManZ
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.
GWARNING
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 ( Ypage 161).
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 actuallyis.
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 then light
up and remain lit. When the indicator lamp is on, OCS (Occu- pant Classification System) has disabled the front-passenger
front air bag and front-passenger knee bag ( Ypage 49)
R the
FrontPassengerAirbagEnabledSeeOperator's
ManualorFrontPassengerAirbagDisabledSeeOperZ
224Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
ator's Manualdisplay 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.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see ( Ypage 49).
Lights
iVehicles with LED bulbs in the light clusters:
The display message for the corresponding light will only appear if all the LEDs have failed.
Display messagesPossible causes/consequences and MSolutions
b
Check Left CornerZ
ing LightorCheck
Right Cornering
Light
The left or right-hand cornering light is defective.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
Check Left Low
BeamorCheck
Right Low Beam
The left or right-hand low-beam headlamp is defective.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
Check Rear Left
Turn Signalor
Check Rear Right
Turn Signal
The rear left-hand or rear right-hand turn signal is defective.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
Display messages225
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
b
Check Front Left
Turn Signalor
Check Front Right
Turn Signal
The front left-hand or front right-hand turn signal is defective.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
Check Left Mirror
Turn Signalor
CheckRightMirror
Turn Signal
The turn signal in the left-hand or right-hand exterior mirror is
defective.
X Visit a qualified specialist workshop.
b
CheckCenterBrake
Lamp
The high-mounted brake lamp is faulty. X
Visit a qualified specialist workshop.
b
Check Left Brake
LamporCheck
Right Brake Lamp
The left or right-hand brake lamp is defective. XVisit a qualified specialist workshop.
b
Check Left Tail
and Brake Lampsor
Check Right Tail
and Brake Lamps
The left or right-hand tail lamp/brake lamp is defective.
X Visit a qualified specialist workshop.
b
Check Left High
BeamorCheck
Right High Beam
The left or right-hand high beam is defective.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
License Plate Lamp
The left or right-hand license plate lamp is faulty.
X Visit a qualified specialist workshop.
b
Check Left Fog
LamporCheck Right
Fog Lamp
The left or right-hand fog lamp is faulty.
X Visit a qualified specialist workshop.
226Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
b
Rear Fog Lamp
The rear fog lamp is faulty.
X Visit a qualified specialist workshop.
b
Check Front Left
Parking Lampor
Check Front Right
Parking Lamp
The front left or front right parking or standing lamp is defective. X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
Backup Light
The backup lamp is defective.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
Check Front Left
Sidemarker Lampor
Check Front Right
Sidemarker Lamp
The front left-hand or front right-hand side marker lamp is faulty.
X Visit a qualified specialist workshop.
b
Check Rear Left
Sidemarker Lampor
Check Rear Right
Sidemarker Lamp
The rear left-hand or rear right-hand side marker lamp is faulty.
X Visit a qualified specialist workshop.
b
CheckLeftDaytime
Running Lightor
Check Right DayZ
time Running Light
The left or right-hand daytime running lamp is faulty.
X Check whether you are permitted to replace the bulb yourself (Y page 115).
or
X Visit a qualified specialist workshop.
b
Active Headlamps
Inoperative
The active light function is faulty.
X Visit a qualified specialist workshop.
b
Malfunction See
Operator's Manual
The exterior lighting is defective.
X Visit a qualified specialist workshop.
Display messages227
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
b
AutoLampFunction
Inoperative
The light sensor is defective.
X Visit a qualified specialist workshop.
b
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 Ã.
Adaptive Highbeam
Assist Inoperative
Adaptive Highbeam Assist is faulty. X
Visit a qualified specialist workshop.
Adaptive Highbeam
Assist Currently
Unavailable See
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 Availablemessage is dis-
played.
Adaptive Highbeam Assist is operational again.
Engine
Display messagesPossible causes/consequences and MSolutions
+
Check Coolant
Level See OperaZ
tor's Manual
The coolant level is too low.
!Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so (Y page 283).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop.
?The fan motor is faulty. XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
228Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
?
Coolant Too Hot
Stop Vehicle Turn
Engine Off
The coolant is too hot.
A warning tone also sounds.
GWARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury. 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 ( Ypage 161).
X Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †).
#
SeeOperator'sManZ
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
!Do not continue driving. The engine could otherwise overheat.
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 ( Ypage 161).
X Consult a qualified specialist workshop.
Display messages229
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
#
Stop Vehicle See
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 ( Ypage 161).
X Observe the instructions in the display message #
See
Operator's Manual.
X Consult a qualified specialist workshop.
4
Check Engine Oil
At Next Refueling
The engine oil level has dropped to the minimum level.
A warning tone also sounds.
!Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
X Check the oil level when next refueling, at the latest (Y page 281).
X If necessary, add engine oil ( Ypage 282).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com.
4
Check Engine Oil
Level(Add1quart)
AMG vehicles: the engine oil level is too low.
!Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
X Check the oil level when next refueling, at the latest (Y page 281).
X If necessary, add engine oil ( Ypage 282).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com.
8
Fuel Level Low
The fuel level has dropped into the reserve range. X Refuel at the nearest gas station.
230Display messages
On-board computer and displays