2016 MERCEDES-BENZ AMG GT ROADSTER engine

Display messages
Possible causes/consequences and
M
MSolutions #
Check Check
brake
brakepad
padwear
wear The brake pads/linings have reached their wear limit.
X Consult a qualified specialist workshop. G
Inoperative Inoperative One or more main features of the Mercedes-Benz Contact system is/
are malfunctioning.
X Have the system checked at a qualified specialist workshop. Collision Preven‐
Collision Preven‐
tion Assist Plus tion Assist Plus
currently unavaila‐ currently unavaila‐
ble ble
See
SeeOwner's
Owner's Man‐
Man‐
ual
ual COLLISION PREVENTION ASSIST PLUS is temporarily inoperative.
Possible causes:
R the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
R the system is outside the operating temperature range
R the on-board voltage is too low
Once the causes listed above no longer apply, the display message
disappears.
COLLISION PREVENTION ASSIST PLUS is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 119).
X Restart the engine. Collision Preven‐ Collision Preven‐
tion Assist Plus tion Assist Plus
inoperative inoperative COLLISION PREVENTION ASSIST PLUS is inoperative due to a mal-
function. Adaptive Brake Assist may also have failed.
X Consult a qualified specialist workshop immediately. PRE-SAFE inopera‐ PRE-SAFE inopera‐
tive See Owner's tive See Owner's
Manual Manual
Important PRE-SAFE
®
functions have failed. All other occupant safety
systems, e.g. airbags, remain available.
X Consult a qualified specialist workshop immediately. Display
messages
177On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Radar
Radar
sensors
sensors dirty
dirty
See Owner's Manual
See Owner's Manual At least one of the following driving systems or driving safety systems
is temporarily restricted or inoperative:
R COLLISION PREVENTION ASSIST PLUS
Possible causes:
R the sensors in the radiator trim and/or in the bumpers are dirty
R the function of the driving system or driving safety system is
impaired due to heavy rain or snow
A warning tone also sounds.
Once the causes listed above no longer apply, the display message
disappears. All driving systems or driving safety systems are operative
again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 119).
X Switch off the engine.
X Clean the sensors (Y page 241) in the following locations:
R in the radiator trim
R in the front bumper
R in the rear bumper, particularly in the middle of the rear bumper
X Restart the engine.
The display message disappears. 6
Restraint sys. mal‐ Restraint sys. mal‐
function Consult function Consult
workshop workshop The restraint system is malfunctioning. The
6warning lamp also
lights up on the instrument cluster.
G WARNING
The airbags or belt tensioners may either be triggered unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Consult a qualified specialist workshop immediately.
Further information about the restraint system (Y page 34).6
Front left malfunc‐ Front left malfunc‐
tion Consult work‐ tion Consult work‐
shop shop
orFront right
Front right
malfunction
malfunction Consult
Consult
workshop
workshop The front left or right restraint system is malfunctioning. The
6
warning lamp also lights up on the instrument cluster.
G WARNING
The airbags or belt tensioners may either be triggered unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Consult a qualified specialist workshop immediately. 178
Display
messagesOn-board computer and displays

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top up coolant See Top up coolant See
Owner’s Manual Owner’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 Top up the coolant, observing the warning notes before doing so
(Y page 235).
X If the coolant needs topping up more often than usual, have the
engine coolant system checked at a qualified specialist workshop. ? The fan motor is faulty.
X If the coolant temperature is below 120 †, you can continue driving
to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-start traffic. ?
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off The coolant is too hot.
A warning tone also sounds.
G WARNING
Never drive with an overheated engine. Driving when your engine is
overheated can cause some fluids which may have leaked into the
engine compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is a risk of injury.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 119).
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 frozen slush.
X Do not start the engine again until the display message goes out and
the coolant temperature is below 120 †. The engine may otherwisebe damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, consult a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †. Display messages
183On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions #
See Owner's Manual See Owner's Manual The battery is not being charged.
A warning tone also sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronics
! Do not continue driving. The engine could otherwise overheat.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 119).
X Consult a qualified specialist workshop. #
Stop vehicle See Stop vehicle See
Owner's Manual Owner's Manual The battery is no longer being charged and the charge status is too
low.
A warning tone also sounds.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 119).
X Observe the instructions in the #See SeeOwner's
Owner's Manual
Manualdisplay
message.
X Consult a qualified specialist workshop. #
Start engine See Start engine See
Owner's Manual Owner's Manual The engine is off and the battery charge status is too low.
X Switch off electrical consumers that you do not need, such as the
rear window heating and interior lighting.
X Leave the engine running for a few minutes, or drive for a longer
distance.
The battery charges. 4
Add 1 litre engine Add 1 litre engine
oil when next refu‐ oil when next refu‐
elling elling The engine oil level has dropped to the minimum level.
! Avoid long journeys when there is too little coolant in the cooling
system. Otherwise the engine will be damaged.
X Check the oil level when next refuelling, at the latest (Y page 233).
X If necessary, top up the engine oil (Y page 234).
X Have the engine checked at a qualified specialist workshop if the
engine oil needs topping up more often than usual.
Information on approved engine oils can be obtained from a qualified
specialist workshop or on the Internet at http://bevo.mercedes-
benz.co m. 184
Display messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions 4
Engine oil level Engine oil level
Stop Stop
vehicle
vehicle Switch
Switch
engine off
engine off The engine oil level is too low. There is a risk of engine damage.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 119).
X Check the engine oil level (Y page 233).
X If necessary, top up the engine oil (Y page 234).4
Engine oil level Engine oil level
Reduce oil level Reduce oil level 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
Consult a qualified specialist workshop. 8
Reserve fuel level Reserve fuel level The fuel level has dropped into the reserve range.
X Refuel at the nearest filling station. C There is very little fuel in the fuel tank.
X Refuel at the nearest filling station without fail. Driving systems
Display messages
Possible causes/consequences and
M
MSolutions À
ATTENTION ASSIST: ATTENTION ASSIST:
Take a break! Take a break! Based on certain criteria, ATTENTION ASSIST has detected fatigue or
increasing lapses in 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 that you get enough rest. À
ATTENTION ASSIST ATTENTION ASSIST
inoperative inoperative ATTENTION ASSIST is inoperative.
X Consult a qualified specialist workshop. ¨
Malfunction Malfunction There is a malfunction in the chassis. The vehicle's handling charac-
teristics may be impaired.
X Consult a qualified specialist workshop. Display
messages
185On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Lane
Lane
Keeping
Keeping Assist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Lane Keeping Assist is deactivated and temporarily inoperative.
Possible causes:
R the windscreen is dirty in the camera's field of vision
R visibility is impaired due to heavy rain, snow or fog
R there have been no lane markings for an extended period
R the lane markings are worn, dark or covered, e.g. by dirt or snow
Once the causes listed above no longer apply, the display message
disappears.
Lane Keeping Assist is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 119).
X Clean the windscreen. Lane Lane
Keeping
Keeping Assist
Assist
inoperative
inoperative Lane Keeping Assist is faulty.
X Consult a qualified specialist workshop. Blind Spot Assist
Blind Spot Assist
currently unavaila‐ currently unavaila‐
ble ble
See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Blind Spot Assist is temporarily inoperative.
Possible causes:
R the radar sensor system is outside the operating temperature range
R the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
Once the causes listed above no longer apply, the display message
disappears.
Blind Spot Assist is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 119).
X Restart the engine. Blind Spot Assist Blind Spot Assist
inoperative inoperative Blind Spot Assist is malfunctioning.
X
Consult a qualified specialist workshop. Traffic Traffic
Sign
Sign Assist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Traffic Sign Assist is temporarily inoperative.
Possible causes:
R the windscreen is dirty in the camera's field of vision
R visibility is impaired due to heavy rain, snow or fog
X Clean the windscreen.
If the system detects that the camera is fully operational, the display message disappears.
Traffic Sign Assist is operational again. Traffic Traffic
Sign
Sign Assist
Assist
inoperative
inoperative Traffic Sign Assist is faulty.
X Consult a qualified specialist workshop. 186
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions ë
Off Off The HOLD function is deactivated. The vehicle has started to skid.
A warning tone also sounds.
X Reactivate the HOLD function later (Y page 138). The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is no longer fulfilled.
A warning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 138). DISTRONIC PLUS off DISTRONIC PLUS off DISTRONIC PLUS has been deactivated (Y
page 130).
If it was not deactivated by the driver, a warning tone also sounds. DISTRONIC PLUS
DISTRONIC PLUS
available again available again DISTRONIC PLUS is operational again after having been temporarily
unavailable. You can now reactivate DISTRONIC PLUS (Y
page 130).DISTRONIC PLUS cur‐ DISTRONIC PLUS cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual DISTRONIC PLUS is temporarily inoperative.
Possible causes:
R the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations 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.
Once the causes listed above no longer apply, the display message
disappears.
DISTRONIC PLUS is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 119).
X Restart the engine. DISTRONIC DISTRONIC
PLUS
PLUSinop‐
inop‐
erative
erative DISTRONIC PLUS is faulty.
A warning tone also sounds.
X Consult a qualified specialist workshop. DISTRONIC PLUS sus‐ DISTRONIC PLUS sus‐
pended 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
DISTRONIC PLUS
- - - mph - - - mph An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS (Y page 130).DISTRONIC PLUS and
DISTRONIC PLUS and
SPEEDTRONIC inoper‐ SPEEDTRONIC inoper‐
ative ative DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone also
sounds.
X Consult a qualified specialist workshop. Display
messages
187On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Tyre
Tyre
press.
press. monitor
monitor
currently unavaila‐
currently unavaila‐
ble ble No signals can be received from the tyre pressure sensors due to
strong RF interference. The tyre pressure monitor is temporarily mal-
functioning.
X Drive on.
The tyre pressure monitor restarts automatically as soon as the
cause has been rectified. Wheel sensor(s) Wheel sensor(s)
missing missing There is no signal from the tyre pressure sensor of one or several
wheels. The pressure of the affected tyre is not displayed in the mul-
tifunction display.
X Have the faulty tyre pressure sensor replaced at a qualified spe-
cialist workshop. Tyre Tyre
press.
press. monitor
monitor
inoperative No
inoperative No
wheel sensors wheel sensors The wheels fitted do not have suitable tyre pressure sensors. The tyre
pressure monitor is deactivated.
X Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitor is activated automatically after driving for
a few minutes. Tyre Tyre
press.
press. monitor
monitor
inoperative
inoperative The tyre pressure monitor is faulty.
X Consult a qualified specialist workshop. Vehicle
Display messages
Possible causes/consequences and
M
MSolutions To start engine,
To start engine,
shift to either P shift to either P
or N or N You have attempted to start the engine with the transmission in posi-
tion Ror D.
X Shift the selector lever to position Por N. Apply
Apply
brake
braketo
todese‐
dese‐
lect Park (P) posi‐
lect Park (P) posi‐
tion tion You have attempted to shift the selector lever to position
D,Ror N
without depressing the brake pedal.
X Depress the brake pedal. To shift out of P
To shift out of P
or or
N,
N,depress
depress brake
brake
and start engine
and start engine With the engine switched off, you have attempted to shift the selector
lever out of position Por Ninto another transmission position.
X Depress the brake pedal.
X Start the engine. 190
Display
messagesOn-board computer and displays