2014 MERCEDES-BENZ SLS AMG COUPE Owners Manual

Display messages Possible causes/consequences and
M
MSolutions b
Check Left Brake Check Left Brake
Lamp Lamp
or
Check Right Brake Check Right Brake
Lamp Lamp The left or right-hand brake light LEDs do not light up.
X
Visit a qualified specialist workshop. b
Check Left Tail Check Left Tail
Lamp Lamp
or
Check Right Tail Check Right Tail
Lamp Lamp The left or right-hand tail lamp LEDs do not light up.
X
Visit a qualified specialist workshop. b
Check Left High Check Left High
Beam Beam
or
Check Right High Check Right High
Beam Beam The left or right-hand low-beam headlamp does not light up.
X
Visit a qualified specialist workshop. b
Check Check
Left
LeftLicense
License
Plate Lamp
Plate Lamp
or
Check Right Check Right
License Plate Lamp License Plate Lamp The left or right-hand license plate lamp does not light up.
X
Replace the bulb (Y page 101). b
Backup Light Backup Light None of the LEDs in the backup lamp light up.
X
Visit a qualified specialist workshop. b
Check Check
Left
LeftDaytime
Daytime
Running Light
Running Light
or
Check Right Check Right
Daytime Running Daytime Running
Light Light The LEDs in the left or right-hand daytime running lamp do not
light up. As a result, the corresponding side/standing lamp has
failed.
X
Visit a qualified specialist workshop. Display
messages
175On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions b
Check Front Left Check Front Left
Sidemarker Lamp Sidemarker Lamp
or
Check Front Right Check Front Right
Sidemarker Lamp Sidemarker Lamp The left or right front side marker lamp is defective.
X
Visit a qualified specialist workshop. b
Check Rear Left Check Rear Left
Sidemarker Lamp Sidemarker Lamp
or
Check Rear Right Check Rear Right
Sidemarker Lamp Sidemarker Lamp The rear left or right side marker lamp is defective.
X
Visit a qualified specialist workshop. b
Check Front Left Check Front Left
Parking Lamp Parking Lamp
or
Check Front Right Check Front Right
Parking Lamp Parking Lamp The front left or front right parking or standing lamp is defective.
X
Visit a qualified specialist workshop. b
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 Ã.b
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. 176
Display
messagesOn-board computer and displays

Engine
Display messages Possible causes/consequences and
M
MSolutions ?
Coolant Low Stop Coolant Low Stop
Vehicle Turn Vehicle Turn
Engine Off Engine Off The coolant is too hot. In addition, the
?warning lamp in the
instrument cluster lights up and a warning tone sounds.
G WARNING
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 (Y page 131).
X Wait until the engine has cooled down.
X Make sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.
X Wait until the display message disappears before restarting the
engine. Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the coolant temperature increases again, visit a qualified
specialist workshop immediately.
! If the coolant temperature is over 248 ‡ (120 †), do not
continue driving. The engine will otherwise be damaged. ? The fan motor is faulty.
X
At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. Display messages
177On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions # 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.
X Secure the vehicle against rolling away ( Ypage 131).
X Open the hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. +
Check Coolant Check Coolant
Level See Level See
Operator's Manual Operator'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
X Add coolant, observing the warning notes before doing so
(Y page 220).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. 4
Engine Oil Level Engine Oil Level
Low Stop Vehicle Low Stop Vehicle
Turn Engine Off Turn Engine Off There is insufficient oil in the engine. There is a risk of engine
damage.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Top up and check the engine oil level (Y page 219).178
Display
messagesOn-board computer and displays

Display messages Possible causes/consequences and
M
MSolutions 4
Check Engine Oil Check Engine Oil
Level Level
(Add 1
(Add 1 Liter)
Liter) The oil level is too low.
X
Check the oil level (Y page 219).
X If necessary, add engine oil.
X Have the engine checked for leaks if you need to add engine oil
more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
www.mbusa.com (USA only). 4
Engine Oil Level Engine Oil Level
Too High Too High You have added too much engine oil. The engine or catalytic
converter may be damaged.
X
Siphon off excess engine oil until it is at the specified level.
Observe the legal requirements. 4
Engine Oil Level Engine Oil Level
Cannot Be Measured Cannot Be Measured The measuring system is faulty.
X
Visit a qualified specialist workshop. 4
Engine Oil Engine Oil
Pressure Control Pressure Control
See Operator's See Operator's
Manual Manual The oil pressure sensor has reported a malfunction.
The oil pressure control is in emergency mode.
The engine lubrication is guaranteed.
X
Visit a qualified specialist workshop. 4
Engine Oil Engine Oil
Pressure Stop Pressure Stop
Vehicle Turn Vehicle Turn
Engine Off Engine Off
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Check the engine oil level (Y page 219) and top up if necessary.
X If there are visible signs of oil loss from the vehicle, consult a
qualified specialist workshop. C There is only a small amount of fuel in the fuel tank.
X
Refuel at the nearest gas station. 8
Fuel Level Low Fuel Level Low The fuel level has fallen below the reserve range.
X
Refuel at the nearest gas station. Display
messages
179On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions 8
Gas Cap Loose 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. ¸
Replace Air Filter Replace Air Filter The air filter is dirty and must be replaced.
X
Visit a qualified specialist workshop. Driving systems
Display messages Possible causes/consequences and
M MSolutions Cruise Control
Cruise Control
Inoperative Inoperative Cruise control is defective.
A warning tone also sounds.
X
Visit a qualified specialist workshop. Cruise Control Cruise Control
- - - mph - - - 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
Activate ESP ®
(Y page 56).
X If conditions permit, drive faster than 20 mph (30 km/h) and
store the speed.
X Check the activation conditions for cruise control
(Y page 138). 180
Display
messagesOn-board computer and displays

Display messages Possible causes/consequences and
M
MSolutions Blind Spot Assist
Blind Spot Assist
Inoperative Inoperative Blind Spot Assist is defective.
The yellow
9indicator lamps also light up in the exterior
mirrors.
X Visit a qualified specialist workshop. Blind Spot Assist Blind Spot Assist
Currently Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Blind 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 9indicator 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:
X Clean the sensors (Y page 228).
X Restart the engine. Display
messages
181On-board computer and displays Z

Tires
Display messages Possible causes/consequences and
M
MSolutions Rectify
Rectify
Tire Pressure 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 (Y page 254).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor (Y page 257).Check Check
Tires
Tires The tire pressure in one or more tires has dropped significantly.
The wheel position is shown in the multifunction display.
A warning tone also sounds.
G WARNING
With tire pressures which are too low, there is a risk of 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 (Y page 131).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 233).
X Check the tire pressure (Y page 254).
X If necessary, correct the tire pressure. 182
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messagesOn-board computer and displays