MERCEDES-BENZ S-COUPE 2015 Owners Manual

Display messagesPossible causes/consequences andMSolutions
T!
÷
Inoperative See
Operator's Manual
EBD (electronic brake force distribution), ABS, ESP ®
, BAS,
PRE

Display messagesPossible causes/consequences andMSolutions
6
SRS Malfunction
Service Required
The restraint system is faulty. The6warning lamp also lights
up in the instrument cluster.
GWARNING
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 42).
6
FrontLeftMalfuncZ
tion Service
RequiredorFront
Right Malfunction
Service Required
The restraint system has malfunctioned at the front on the left or
right. The 6warning lamp also lights up in the instrument clus-
ter.
GWARNING
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.
6
Rear Left MalfuncZ
tion Service
RequiredorRear
Right Malfunction
Service Required
The restraint system has malfunctioned at the rear on the left or
right. The 6warning lamp also lights up in the instrument clus-
ter.
GWARNING
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.
6
Left Side Curtain
AirbagMalfunction
Service Required
orRight Side CurZ
tain Airbag MalZ
function Service
Required
There is a malfunction in the left-hand or right-hand window cur-
tain air bag. The 6warning lamp also lights up in the instrument
cluster.
GWARNING
The left or right window curtain air bag may either be triggered
unintentionally or, in the event of an accident, may not be trig-
gered.
There is an increased risk of injury.
X Visit a qualified specialist workshop.
170Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Front Passenger
Airbag Disabled
SeeOperator'sManZ
ual
The front-passenger air bag is deactivated during the journey, even
though:
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 air bag does not deploy during 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 125).
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 indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF and PASSENGER AIR BAG ON
indicator lamps must light up simultaneously for approx-
imately six seconds.
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 air bag ( Ypage 52).
R the display messages
FrontPassengerAirbagEnabled
See Operator's ManualorFront Passenger Airbag
DisabledSeeOperator'sManualmust not appear 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 or ON
indicator lamp remains lit or goes out depends on how OCS clas- sifies the occupant.
If the conditions are not fulfilled, the system is not operating cor-
rectly.
Display messages171
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 52).
Front Passenger
AirbagEnabledSee
Operator's Manual
The front-passenger air bag is 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 air bag may deploy 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 125).
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 indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R the PASSENGER AIR BAG OFF and PASSENGER AIR BAG ON
indicator lamps must light up simultaneously for approx-
imately six seconds.
R the PASSENGER AIR BAG OFF indicator lamp must then light
up and remain lit. If the indicator lamp is on, OCS (Occupant
Classification System) has deactivated the front-passenger
air bag ( Ypage 52).
R the display messages
FrontPassengerAirbagEnabled
See Operator's ManualorFront Passenger Airbag
172Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
DisabledSeeOperator'sManualmust not appear 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 or ON
indicator lamp remains lit or goes out depends on how OCS clas- sifies 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 52).
Display messages173
On-board computer and displays
Z

Engine
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 125).
X Wait 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 257 ‡ (125 †). 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 255 ‡ (124 †).
174Display messages
On-board computer and displays

Tires
Display messagesPossible causes/consequences andMSolutions
Check TiresThe 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
With tire pressures which are too low, there is a risk of the fol-
lowing 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 125).
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Ypage 220).
X Check the tire pressure ( Ypage 246).
X If necessary, correct the tire pressure.
Warning Tire MalZ
function
The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
GWARNING
If you drive with a flat tire, there is 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 125).
X Check the tires and, if necessary, follow the instructions for a
flat tire ( Ypage 220).
Display messages175
On-board computer and displays
Z

Vehicle
Display messagesPossible causes/consequences andMSolutions
MThe hood is open. A warning tone also sounds.
GWARNING
The open hood may block your view when the vehicle is in motion.
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.
X Secure the vehicle against rolling away ( Ypage 125).
X Close the hood.
Ð
PowerSteeringMalZ
function See OperZ
ator's Manual
The power steering is malfunctioning.
A warning tone also sounds.
GWARNING
You will need to use more force to steer.
There is a risk of an accident.
X Check whether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
General notes
This section describes indicator and warning lamps in the instrument cluster relevant to safety and solutions. A description of other indicator and warning lamps in the instrument cluster and
their solutions can be found in the Digital Operator's Manual.
176Warning and indicator lamps in the instrument cluster
On-board computer and displays

Safety
Seat belts
Warning/ indicatorlampNSignal type
Possible causes/consequences and M
Solutions
üNAfter starting the engine, the red seat belt warning lamp lights up for
6 seconds.
The seat belt warning lamp reminds the driver and front passenger to fasten
their seat belts. X Fasten your seat belt ( Ypage 46).
üN After starting the engine, the red seat belt warning lamp lights up. In addi-
tion, a warning tone sounds for up to 6 seconds.
The driver's seat belt is not fastened.
X Fasten your seat belt ( Ypage 46).
The warning tone ceases.
üN The red seat belt warning lamp lights up after the engine starts, as soon as
the driver's or the front-passenger door is closed.
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt ( Ypage 46).
The warning lamp goes out.
There are objects on the front-passenger seat. X Remove the objects from the front-passenger seat and stow them in a
secure place.
The warning lamp goes out.
üN The red seat belt warning lamp flashes and an intermittent audible warning
sounds.
The driver or front passenger has not fastened their seat belt. The vehicle is
being driven faster than 15 mph (25 km/h) or has briefly been driven faster
than 15 mph (25 km/ h).
X Fasten your seat belt ( Ypage 46).
The warning lamp goes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. The vehicle is being driven
faster than 15 mph (25 km/h) or has briefly been driven faster than 15 mph
(25 km/h). X Remove the objects from the front-passenger seat and stow them in a
secure place.
The warning lamp goes out and the intermittent warning tone ceases.
Warning and indicator lamps in the instrument cluster177
On-board computer and displays
Z

Safety systems
Warning/ indicatorlampNSignal type
Possible causes/consequences and M
Solutions
$JN$ (USA only), J(Canada only): the red brake system warning lamp
is lit while the engine is running. A warning tone also sounds.
GWARNING
The brake boosting effect is malfunctioning and the braking 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 circumstan- ces.
X Secure the vehicle against rolling away ( Ypage 125).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display.
$JN $ (USA only), J(Canada only): the red brake system warning lamp
is lit while the engine is running. A warning tone also sounds.
There is not enough brake fluid in the brake fluid reservoir.
GWARNING
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 circumstan- ces.
X Secure the vehicle against rolling away ( Ypage 125).
X Do not add brake fluid. Adding more will not remedy the malfunction.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display.
178Warning and indicator lamps in the instrument cluster
On-board computer and displays