2015 MERCEDES-BENZ SLK-CLASS ROADSTER Owners Manual

Display messagesPossible causes/consequences andMSolutions
CThere is only a very small amount of fuel in the fuel tank.
X Refuel at the nearest gas station without fail.
8
Gas Cap Loose
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed: X Close the fuel filler cap.
If the fuel filler cap is correctly closed: X Visit a qualified specialist workshop.
Driving systems
Display messagesPossible causes/consequences and MSolutions
À
Attention Assist:
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.
À
Attention Assist
Inoperative
ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop.
ë
Off
The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later ( Ypage 180).
RadarSensorsDeacZ
tivated See OperaZ
tor's Manual
The radar sensor system is deactivated.
X Switch on the radar sensor system ( Ypage 207).
Display messages231
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Lane Keeping
Assist Currently
Unavailable See
Operator's Manual
Lane Keeping Assist is deactivated and temporarily inoperative.
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.
R there are no lane markings for a longer period.
R the lane markings are worn, dark or covered, e.g. by dirt or snow.
When the causes stated above no longer apply, the display mes-
sage disappears.
Lane Keeping Assist is operational again.
If the display message does not disappear:
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 Clean the windshield.
Lane Keeping
Assist Inoperative
Lane Keeping Assist is faulty.
X Visit a qualified specialist workshop.
Blind Spot Assist
Currently UnavailZ
able See OperaZ
tor's Manual
Blind Spot Assist is temporarily inoperative. Possible causes are:
R the sensors are dirty.
R 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 sta-
tions or other sources of electromagnetic radiation.
The yellow 9indicator lamps also light up in the exterior mir-
rors.
When the causes stated above no longer apply, the display mes-
sage disappears.
Blind Spot Assist is operational again.
If the display message does not disappear:
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 Clean the sensors ( Ypage 289).
X Restart the engine.
232Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Blind Spot Assist
Inoperative
Blind Spot Assist is defective.
The yellow9indicator lamps also light up in the exterior mir-
rors. X Visit a qualified specialist workshop.
Parking Guidance
Inoperative
Parking Guidance is malfunctioning ( Ypage 185).
X Restart the engine.
If the display message continues to be displayed: X Visit a qualified specialist workshop.
Parking Guidance
Canceled
Parking Guidance is deactivated. Possible causes are:
R the vehicle is skidding.
R the sensors are dirty.
R a malfunction has occurred.
A warning tone also sounds.
X Reactivate Parking Guidance later ( Ypage 185).
If the parking space symbol does not appear in the multifunction
display at speeds below 19 mph (30 km/h):
X Clean the sensors ( Ypage 289).
X Restart the engine.
If the parking space symbol still does not appear in the multifunc-
tion display at speeds below 19 mph (30 km/h):
X Visit a qualified specialist workshop.
Parking Guidance has been deactivated because you are no longer
following the recommended path. X Park again and, while doing so, observe the display messages in
the multifunction display.
Parking Guidance
Finished
The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
DISTRONIC PLUS OffDISTRONIC PLUS has been deactivated ( Ypage 171).
If it was deactivated automatically, a warning tone also sounds.
DISTRONICPLUSNow
Available
DISTRONIC PLUS is operational again after having been tempo-
rarily unavailable. You can now reactivate DISTRONIC PLUS( Y page 171).
Display messages233
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
DISTRONICPLUSCurZ
rentlyUnavailable
SeeOperator'sManZ
ual
DISTRONIC PLUS is temporarily inoperative. Possible causes are:
R function is impaired due to heavy rain or snow.
R the sensors in the radiator trim and the bumper are dirty.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
A warning tone also sounds.
When the causes stated above no longer apply, the display mes-
sage disappears.
DISTRONIC PLUS is operational again.
If the display message does not disappear:
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 Clean the sensors in the radiator grill and the bumper(Y page 289).
X Restart the engine.
DISTRONIC PLUS
Inoperative
DISTRONIC PLUS is defective.
BAS PLUS (Brake Assist PLUS) and PRE-SAFE ®
Brake may be
inoperative as well.
A warning tone also sounds.
X Visit a qualified specialist workshop.
DISTRONICPLUSSusZ
pended
You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal.
DISTRONIC PLUS
- - - mph
An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS (Y page 171).
234Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Cruise Control
Inoperative
Cruise control is malfunctioning.
A warning tone also sounds.
X Visit a qualified specialist workshop.
Cruise Control
- - - mph
A condition for activating cruise control has not been fulfilled.
You have tried to store a speed below 20 mph (30 km/h), for
example.
X If conditions permit, drive faster than 20 mph (30 km/ h)and
store the speed.
X Check the activation conditions for cruise control ( Ypage 169).
Display messages235
On-board computer and displays
Z

Tires
Display messagesPossible causes/consequences andMSolutions
Check
Tire Pressure Soon
Canada only:
The tire pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
GWARNING
Tire pressures that are too low pose the following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 161).
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Ypage 295).
X Check the tire pressures and, if necessary, correct the tire pres-
sure.
X Restart the tire pressure loss warning system when the tire
pressure is correct ( Ypage 319).
CheckTirePressure
Then Restart Run
Flat Indicator
Canada only:
The tire pressure loss warning system generated a display mes-
sage and has not been restarted since.
X Set the correct tire pressure in all four tires.
X Restart the tire pressure loss warning system ( Ypage 319).
Run Flat Indicator
Inoperative
Canada only:
The tire pressure loss warning system is faulty.
X Visit a qualified specialist workshop.
Please Correct
Tire Pressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressures at the next opportunity ( Ypage 320).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor ( Ypage 322).
236Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Check
Tires
The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
Tire pressures that are too low pose the following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 161).
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Ypage 295).
X Check the tire pressure ( Ypage 320).
X If necessary, correct the tire pressure.
Warning
Tire Malfunction
The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
GWARNING
Driving with a flat tire poses a risk of the following hazards:
R a flat tire affects the ability to steer or brake the vehicle.
R you could lose control of the vehicle.
R continued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away ( Ypage 161).
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Ypage 295).
Display messages237
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
TirePress.Monitor
Currently UnavailZ
able
Because there is interference from a strong source of radio waves,
no signals from the tire pressure sensors are detected. The tire
pressure monitor is temporarily malfunctioning.
X Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been resolved.
TirePress. SenZ
sor(s) Missing
There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire is not displayed in the
multifunction display. X Have the faulty tire pressure sensor replaced at a qualified spe-
cialist workshop.
Tire Pressure MonZ
itor Inoperative
No Wheel Sensors
The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
X Mount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes.
TirePress.Monitor
Inoperative
The tire pressure monitor is faulty.
X Visit a qualified specialist workshop.
Vehicle
Display messagesPossible causes/consequences and MSolutions
Shiftto'P'or'N'
to Start Engine
You have attempted to start the engine with the transmission in
positionRor D.
X Shift the transmission to position Por N.
Apply Brake
to Shift from 'P'
You have attempted to move the transmission selector lever to
position D,R or Nwithout depressing the brake pedal.
X Depress the brake pedal.
238Display messages
On-board computer and displays