2012-2017 Mercedes A Class 4 Door On-board computer/Displays -> Display messages User Manual
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On-board computer/Displays -> Display messages for Your Mercedes A Class 4 Door Third Generation (2012-2017)

Menus and submenus  
254  
SETUP  
For safety reasons, not all functions are reset:  
the Limit speed (winnter tyrrees) function  
in permanent SPEEDTRONIC can only be set  
in the Vehiclle submenu.  
If you want to reset the Daytime driving  
lights function in the Lights submenu, you  
must turn the key to position 1 in the ignition  
lock.  
:
Drive system Comfort/Sport/Sport +  
;
=
?
Suspension Comfort/Sport/Sport +  
Transmission D/M  
ESP® On/Off or SPORT handling mode  
AMG menu (Mercedes-AMG vehicles)  
WARMUP  
Sport  
SETUP displays the following information and  
functions:  
R
the digital speedometer  
R
the gear indicator  
R
the drive system setting  
R
the suspension mode  
:
Digital speedometer  
R
the transmission position  
;
Gear indicator  
Upshift indicator  
®
R
=
the ESP (Electronic Stability Program) sta-  
tus  
?
Engine oil temperature  
X
A
B
Press the = or ; button on the steer-  
ing wheel to select the AMG menu.  
Press 9 repeatedly until SETUP  
Coolant temperature  
Transmission oil temperature  
X
X
Pressthe = or ; button on the steer-  
ing wheel to select the AMG menu.  
Upshift indicator: upshift indicator UP =  
indicates that the engine has reached the  
overrevving range when in the manual drive  
program.  
appears.  
RACETIMER  
Displaying and starting the RACETIMER  
Engine and transmission oil tempera-  
ture: when the engine and transmission  
are at normal operating temperature, oil  
temperature ? and B are displayed in  
white in the multifunction display.  
If the multifunction display shows oil tem-  
perature ? or B in blue, the engine or the  
transmission are not yet at normal operat-  
ing temperature. Avoid using the full output  
of the engine during this time.  
:
Lap  
RACETIMER  
;
The RACETIMER is only intended for use on a  
closed race circuit. Do not use the function on  
public roads.  
Menus and submenus  
255  
Stopping the RACETIMER  
You can start the RACETIMER when the  
engine is running or if the key is in position 2  
in the ignition lock.  
X
Pressthe = or ; buttononthesteer-  
ing wheel to select the AMG menu.  
X
Press the 9 button repeatedly until the  
RACETIMER appears.  
X
To start: press the a button to start the  
X
X
Press the % button on the steering  
wheel.  
Confirm Yes with a.  
RACETIMER.  
Displaying the intermediate time  
The RACETIMER interrupts timing if you stop  
the vehicle and turn the key to position 1 in  
theignitionlock. Ifyou turn thekeytoposition  
3 and then press a to confirm Start, tim-  
ing is continued.  
Resetting the current lap  
X
Stop the RACETIMER.  
Press the = or ; button to select  
X
Press the = or ; button to select  
Interm. Time.  
X
Reset Lap.  
Press a to reset the lap time to "0".  
X
Press a to confirm.  
The intermediate time is shown for five sec-  
onds.  
X
Deleting all laps  
Starting a new lap  
If you switch off the engine, the RACETIMER is  
reset to "0" after 30 seconds. All laps are  
deleted.  
You cannot delete individual stored laps. If  
you have stopped 16 laps, the current lap  
does not have to be reset.  
:
RACETIMER  
Fastest lap time (best lap)  
Lap  
;
=
X
Press a to confirm New Lap.  
i A maximum of 16 laps may be stored. The  
16th lap can only be completed with Fin‐  
ish Lap.  
X
Reset the current lap.  
Press a to confirm Reset.  
Reset Race Timer? appears in the multi-  
X
function display.  
X
Press the : button to select Yes and  
press the a button to confirm.  
All laps are deleted.  
Z
Menus and submenus  
256  
Overall evaluation  
This function is only available if you have  
stored at least two laps and have stopped the  
RACETIMER.  
X
Pressthe = or ; buttonon the steer-  
ing wheel to select the AMG menu.  
X
Press the 9 button repeatedly until a lap  
evaluation appears.  
Each lap is shown in a separate submenu.  
The fastest lap is indicated by flashing sym-  
bol :.  
:
RACETIMER overall evaluation  
Total time driven  
;
=
Average speed  
X
Press the 9 or : button to select a  
different lap evaluation.  
?
Distance covered  
A
Maximum speed  
This function is shown if you have stored at  
least one lap and stopped the RACETIMER.  
X
Press = or ; on the steering wheel  
to select the AMG menu.  
X
Press the 9 button repeatedly until the  
overall evaluation appears.  
Lap evaluation  
:
Lap  
;
Lap time  
=
Average lap speed  
?
Lap length  
A
Top speed during lap  
Display messages  
257  
Display messages  
Introduction  
General notes  
Display messages appear in the multifunction display.  
Display messages with graphic symbols are simplified in the Owner's Manual and may differ  
from the symbols in the multifunction display.  
Please respond in accordance with the display messages and follow the additional notes in this  
Owner's Manual.  
Certain display messages are accompanied by an audible warning tone or a continuous tone.  
When the ignition is switched off, all display messages are deleted apart from some high-  
priority display messages. Once the causes of the high-priority display messages have been  
rectified, these display messages are deleted as well.  
When you stop and park the vehicle, please observe the notes on:  
R
HOLD function (Y page 204)  
R
Parking (Y page 184)  
Hiding display messages  
X
Press the a or % button on the steering wheel.  
The multifunction display hides the display message.  
The multifunction display shows high-priority display messages in red. Some high-priority dis-  
play messages cannot be hidden.  
The multifunction display shows these messages continuously until the causes for the mes-  
sages have been remedied.  
Message memory  
The on-board computer saves certain display messages in the message memory. You can call  
up the display messages:  
X
Press the = or ; button on the steering wheel to select the Service menu.  
If there are display messages, the multifunction display shows 2 messages, for example.  
X
Press the 9 or : button to select the entry, e.g. 2 messages.  
X
Press a to confirm.  
X
Press the 9 or : button to scroll through the display messages.  
Z
Display messages  
258  
Safety systems  
Display messages  
Possible causes/consequences and M Solutions  
ABS (Anti-lock Braking System), BAS (Brake Assist System), ESP®  
(Electronic Stability Program), ESP® trailer stabilisation, the HOLD  
function, hill start assist and PRE-SAFE® are temporarily unavail-  
able.  
The adaptive brake lights and COLLISION PREVENTION ASSIST  
PLUS may also have failed.  
!÷  
currently unavail‐  
able See Owner's  
Manual  
In addition, the !, ÷ and å warning lamps may light up  
in the instrument cluster.  
ATTENTION ASSIST is deactivated.  
Possible causes:  
R
Self-diagnosis is not yet complete  
R
The on-board voltage may be insufficient.  
WARNING  
G
The brake system continues to function normally, but without the  
functions listed above. The wheels could therefore lock if you  
brake hard, for example.  
The steerability and braking characteristics may be severely affec-  
ted. The braking distance may increase in an emergency braking  
situation.  
If ESP® is not operational, ESP® is unable to stabilise the vehicle.  
There is an increased danger of skidding and risk of an accident.  
X
Carefully drive on a suitable stretch of road, making slight steer-  
ing movements, at a speed above 20 km/h.  
If the display message disappears, the functions mentioned  
above are available again.  
If the multifunction display still shows the display message:  
X
Drive on carefully.  
X
Consult a qualified specialist workshop immediately.  
ABS, BAS, ESP®, ESP® trailer stabilisation, the HOLD function, hill  
start assist and PRE-SAFE® are not available due to a malfunction.  
The adaptive brake lights and COLLISION PREVENTION ASSIST  
PLUS may also have failed.  
!÷  
inoperative See  
Owner's Manual  
The !, ÷, å and J warning lamps may also light up  
in the instrument cluster.  
ATTENTION ASSIST is deactivated.  
WARNING  
G
Display messages  
259  
Display messages  
Possible causes/consequences and M Solutions  
The brake system continues to function normally, but without the  
functions listed above. The wheels could therefore lock if you  
brake hard, for example.  
The steerability and braking characteristics may be severely affec-  
ted. The braking distance may increase in an emergency braking  
situation.  
If ESP® is not operational, ESP® is unable to stabilise the vehicle.  
There is an increased danger of skidding and risk of an accident.  
X
Drive on carefully.  
X
Consult a qualified specialist workshop immediately.  
ESP®, ESP® trailer stabilisation, BAS, the HOLD function, hill start  
assist and PRE-SAFE® are temporarily unavailable.  
The adaptive brake lights and COLLISION PREVENTION ASSIST  
PLUS may also have failed.  
÷
currently uunavvaaiill‐‐  
able See OOwner's  
Manual  
In addition, the ÷ and å warning lamps may light up in the  
instrument cluster.  
ATTENTION ASSIST is deactivated.  
The self-diagnosis function, for example, may not be complete.  
WARNING  
G
The brake system continues to function normally, but without the  
functions listed above.  
The braking distance may thus increase in an emergency braking  
situation.  
If ESP® is not operational, ESP® is unable to stabilise the vehicle.  
There is an increased danger of skidding and risk of an accident.  
X
Carefully drive on a suitable stretch of road, making slight steer-  
ing movements at a speed above 20 km/h.  
If the display message disappears, the functions mentioned  
above are available again.  
If the multifunction display still shows the display message:  
X
Drive on carefully.  
X
Consult a qualified specialist workshop immediately.  
Z
Display messages  
260  
Display messages  
Possible causes/consequences and M Solutions  
ESP®, ESP® trailer stabilisation, BAS, the HOLD function, hill start  
assist and PRE-SAFE® are not available due to a malfunction.  
The adaptive brake lights and COLLISION PREVENTION ASSIST  
PLUS may also have failed.  
÷
inoperattivvee SSeeee  
Owner's MManual  
In addition, the ÷ and å warning lamps may light up in the  
instrument cluster.  
ATTENTION ASSIST is deactivated.  
WARNING  
G
The brake system continues to function normally, but without the  
functions listed above.  
The braking distance may thus increase in an emergency braking  
situation.  
If ESP® is not operational, ESP® is unable to stabilise the vehicle.  
There is an increased danger of skidding and risk of an accident.  
X
Drive on carefully.  
X
Consult a qualified specialist workshop immediately.  
EBD (electronic brake force distribution), ABS, BAS, ESP®, ESP®  
trailer stabilisation, the HOLD function, hill start assist and PRE-  
SAFE® are not available due to a malfunction.  
T!  
÷
The adaptive brake lights and COLLISION PREVENTION ASSIST  
PLUS may also have failed.  
inoperattivvee SSeeee  
Owner's MManual  
A warning tone sounds.  
In addition, the ÷, å and ! warning lamps may light up  
in the instrument cluster.  
WARNING  
G
The brake system continues to function normally, but without the  
functions listed above. The front and rear wheels could therefore  
lock, for example, if you brake hard.  
The steerability and braking characteristics may be severely affec-  
ted. The braking distance may increase in an emergency braking  
situation.  
If ESP® is not operational, ESP® is unable to stabilise the vehicle.  
There is an increased danger of skidding and risk of an accident.  
X
Drive on carefully.  
X
Consult a qualified specialist workshop immediately.  
Display messages  
261  
Display messages  
Possible causes/consequences and M Solutions  
The red ! indicator lamp lights up.  
You attempted to release the electric parking brake while the igni-  
tion was switched off.  
!
Turn on the igni‐  
tion to release  
the parkiing brake  
X
Key: turn the key to position 1 in the ignition lock.  
X
KEYLESS-GO: switch on the ignition.  
The red ! indicator lamp flashes and a warning tone sounds. A  
condition for automatic release of the electric parking brake is not  
fulfilled (Y page 185).  
!
Release pparkingg  
brake  
You are driving with the electric parking brake applied.  
X
Release the electric parking brake manually.  
The red ! indicator lamp flashes and a warning tone sounds.  
You are making an emergency stop using the electric parking  
brake (Y page 185).  
The yellow ! warning lamp lights up.  
The electric parking brake is malfunctioning.  
To apply:  
!
Parking brrake See  
Owner'ss Manual  
X
Switch the ignition off.  
X
Press the electric parking brake lever for at least ten seconds.  
X
Vehicles with manual transmission: engage first gear.  
X
Vehicles with automatic transmission: shift the transmission  
to position P.  
X
Consult a qualified specialist workshop.  
Z
Display messages  
262  
Display messages  
Possible causes/consequences and M Solutions  
The yellow ! warning lamp and the red ! indicator lamp are  
lit.  
The electric parking brake is malfunctioning.  
To release:  
X
Switch off the ignition and turn it back on.  
X
Release the electric parking brake manually.  
or  
X Vehicles with manual transmission (automatic emergency  
release): insert the seat belt in the belt buckle and accelerate  
slightly more when pulling away.  
X
Vehicles with automatic transmission: release the electric  
parking brake automatically (Y page 185).  
If the electric parking brake still cannot be released:  
X
Do not drive on.  
X
Consult a qualified specialist workshop.  
The red ! indicator lamp flashes and the yellow ! warning  
lamp is lit.  
The electric parking brake is malfunctioning.  
To release:  
X
Switch off the ignition and turn it back on.  
X
Release the electric parking brake manually.  
To apply:  
X
Switch off the ignition and turn it back on.  
X
Apply the electric parking brake manually.  
If the red ! indicator lamp continues to flash:  
X
Do not drive on.  
X
Safeguard the vehicle against rolling away (Y page 369).  
X
Vehicles with manual transmission: engage first gear.  
X
Vehicles with automatic transmission: shift the transmission  
to position P.  
X
Turn the front wheels towards the kerb.  
X
Consult a qualified specialist workshop.  
Display messages  
263  
Display messages  
Possible causes/consequences and M Solutions  
The yellow ! warning lamp lights up. The red ! indicator  
lamp flashes for about ten seconds after the electric parking brake  
has been applied or released. It then goes out or remains lit.  
The electric parking brake is malfunctioning.  
X
Switch off the ignition and turn it back on.  
X
Apply the electric parking brake.  
If it is not possible to apply the electric parking brake:  
X
Vehicles with manual transmission: engage first gear.  
X
Vehicles with automatic transmission: shift the transmission  
to position P.  
X
Consult a qualified specialist workshop.  
If it is not possible to release the electric parking brake:  
X Vehicles with manual transmission (automatic emergency  
release): insert the seat belt in the belt buckle and accelerate  
slightly more when pulling away.  
X
Vehicles with automatic transmission: release the electric  
parking brake automatically (Y page 185).  
If the electric parking brake still cannot be released:  
X
Consult a qualified specialist workshop.  
The yellow ! warning lamp lights up. If you manually apply or  
release the electric parking brake, the red ! indicator lamp  
flashes.  
The electric parking brake is malfunctioning. It is not possible to  
apply the electric parking brake manually.  
X
Vehicles with manual transmission: switch off the ignition.  
The electric parking brake is applied automatically.  
or  
X
Insert the seat belt in the belt buckle and accelerate slightly  
more when pulling away (automatic emergency release).  
X
Vehicles with automatic transmission: shift the transmission  
to position P, as the electric parking brake is not applied auto-  
matically.  
X
Consult a qualified specialist workshop.  
Ifyoudonotwishthe electricparking brake tobeapplied, leave the  
ignition switched on, e.g. when washing the vehicle in an auto-  
matic car wash or when having the vehicle towed.  
Z
Display messages  
264  
Display messages  
Possible causes/consequences and M Solutions  
The yellow ! warning lamp lights up. The red ! indicator  
lamp flashes for about ten seconds after the electric parking brake  
has been applied or released. It then goes out or remains lit.  
The electric parking brake is malfunctioning, e.g. because of over-  
voltage or undervoltage.  
!
Parking brake inop‐  
erative  
X
Rectify the cause of the overvoltage or undervoltage, e.g. by  
charging the battery or restarting the engine.  
X
Apply or release the electric parking brake.  
If the electric parking brake still cannot be applied or released:  
X
Switch off the ignition and turn it back on.  
X
Apply or release the electric parking brake.  
If the electric parking brake still cannot be released:  
X
Consult a qualified specialist workshop.  
If it is still not possible to apply the electric parking brake:  
X
Consult a qualified specialist workshop.  
The red ! indicator lamp flashes and the yellow ! warning  
lamp is lit.  
It is not possible to apply the electric parking brake manually.  
X
Vehicles with manual transmission: engage first gear.  
X
Vehicles with automatic transmission: shift the transmission  
to position P.  
X
Consult a qualified specialist workshop.  
Vehicles with manual transmission: a malfunction has occurred  
while the HOLD function was activated.  
A tone may also sound at regular intervals. If you attempt to lock  
the vehicle, the tone becomes louder.  
J
Brake immeediaatteellyy  
You cannot start the engine.  
X
Paying attention to the traffic situation, immediately depress the  
brake pedal firmly and hold until the display message disap-  
pears.  
X
Safeguard the vehicle against rolling away (Y page 184).  
You can restart the engine.  
Display messages  
265  
Display messages  
Possible causes/consequences and M Solutions  
There is insufficient brake fluid in the brake fluid reservoir.  
In addition, the red J warning lamp lights up in the instrument  
cluster and a warning tone sounds.  
J
Check brakke fluiidd  
level  
WARNING  
G
Braking efficiency 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 circumstances.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Consult a qualified specialist workshop.  
X
Do not top up the brake fluid. This does not correct the fault.  
The brake pads/linings have reached their wear limit.  
#
Check braake pad  
wear  
X
Consult a qualified specialist workshop.  
One or more main features of the Mercedes-Benz Contact system  
are malfunctioning.  
G
Inoperaativvee  
X
Consult a qualified specialist workshop.  
Collisionn Prevveenn‐‐  
tion Assiist Plus  
curreentlyy unavvaaiill‐‐  
able See OOwner's  
Manual  
COLLISION PREVENTION ASSIST PLUS is temporarily inoperative.  
Possible causes:  
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.  
Once the causes listed above no longer apply, the display message  
goes out.  
COLLISION PREVENTION ASSIST 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
Safeguard the vehicle against rolling away (Y page 184).  
X
Restart the engine.  
Collisionn Prevveenn‐‐  
tion Assiist Plus  
inoperrativvee  
COLLISION PREVENTION ASSIST PLUS is temporarily inoperative  
due to a malfunction. Adaptive Brake Assist may also have failed.  
X
Consult a qualified specialist workshop immediately.  
Z
Display messages  
266  
Display messages  
Possible causes/consequences and M Solutions  
Important functions of PRE-SAFE® have failed. All other occupant  
safety systems, e.g. airbags, remain available.  
PRE-SAFE iinoppeerraa‐‐  
tive Seee Owner's  
Manual  
X
Consult a qualified specialist workshop immediately.  
Radar seensorss  
dirty See OOwner'ss  
Manual  
At least one of the following driving systems or driving safety sys-  
tems is temporarily restricted or inoperative:  
R
COLLISION PREVENTION ASSIST PLUS  
R
DISTRONIC PLUS  
Possible causes:  
R
the sensors in the radiator trim and/or in the bumpers are dirty  
R
the function of the driving system and/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  
goes out. All driving systems and driving safety systems are opera-  
tional 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
Safeguard the vehicle against rolling away (Y page 184).  
X
Switch off the engine.  
X
Clean the sensors (Y page 332) 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.  
If this symbol appears in the multifunction display, a seat belt  
tongue has been inserted into a rear seat belt buckle.  
ü
Further information on the status indicator for the rear seat belts  
(Y page 46).  
Display messages  
267  
Display messages  
Possible causes/consequences and M Solutions  
If this symbol appears in the multifunction display, a seat belt  
tongue has not been inserted in a rear seat belt buckle.  
ý
WARNING  
G
A seat belt which is not worn correctly, or which has not been  
engaged in the seat belt buckle correctly, cannot provide the  
intended level of protection.  
This poses an increased risk of injury.  
X
If necessary, ask the occupants in the rear to fasten their seat  
belts (Y page 44).  
Further information on the status indicator for the rear seat belts  
(Y page 46).  
The restraint system is faulty. The 6 warning lamp also lights  
up in the instrument cluster.  
6
Restraint ssys. mal‐  
functionn Conssuulltt  
workshop  
WARNING  
G
The airbags or belt tensioners may either be triggered uninten-  
tionally 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.  
For further information about the restraint system, see  
(Y page 40).  
The restraint system has malfunctioned at the front on the left or  
right. The 6 warning lamp also lights up in the instrument clus-  
ter.  
6
Front left mmalfunc‐  
tion Consuult work‐  
shop or Front  
WARNING  
G
right mallfunccttiioonn  
Consult wworkshoopp  
The airbags or belt tensioners may either be triggered uninten-  
tionally 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.  
The rear left-hand or right-hand restraint system has malfunc-  
tioned. The 6 warning lamp also lights up in the instrument  
cluster.  
6
Rear left malfunc‐  
tion Consullt work‐  
shop or Rearr right  
malfunctiioonn CCoonn‐‐  
sult workshop  
WARNING  
G
The airbags or belt tensioners may either be triggered uninten-  
tionally 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.  
Z
Display messages  
268  
Display messages  
Possible causes/consequences and M Solutions  
The rear centre restraint system has malfunctioned. The 6  
warning lamp also lights up in the instrument cluster.  
6
Rear centrre mal‐  
function CConssuulltt  
workshop  
WARNING  
G
The airbags or belt tensioners may either be triggered uninten-  
tionally 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.  
The left or right windowbag is malfunctioning. The 6 warning  
lamp also lights up in the instrument cluster.  
6
Left windoowbag mal‐  
functionn Conssuulltt  
workshoop or Right  
windoowbagg malffuunncc‐‐  
tion Consullt work‐  
shop  
WARNING  
G
The left or right windowbag 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.  
Display messages  
269  
Display messages  
Possible causes/consequences and M Solutions  
Front passsenggeerr  
airbag diisableedd  
See Ownerr's Maanual  
The front-passenger front airbag is disabled 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 weight the system  
detects may be too low.  
WARNING  
G
The front-passenger front airbag does not deploy during an acci-  
dent.  
This poses 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
Safeguard the vehicle against rolling away (Y page 184).  
X
Switch the ignition off.  
X
Have the occupant on the front-passenger seat step out of the  
vehicle.  
X
Make sure that the seat is unoccupied, close the front-  
passenger door and switch on the ignition.  
X
Observe the PASSENGER AIR BAG indicator lamps in the centre  
console and the multifunction display and check the following:  
Seat unoccupied and ignition switched on:  
R
a self-diagnosis takes place. The PASSENGER AIR BAG OFF  
and PASSENGER AIR BAG ON indicator lamps light up simul-  
taneously for approximately six seconds  
R
the PASSENGER AIR BAG OFF indicator lamp must light up  
and remain on after the self-diagnosis. If the indicator lamp is  
on, the automatic front-passenger front airbag deactivation  
system has disabled the front-passenger front airbag  
(Y page 50)  
R
the Frontt-passseennggeerr aaiirrbbaagg eennaabblleedd SSeeee OOwwnneerr''ss  
Manuall or Front--passseennggeerr aairbagg disaabbled See Own‐  
er's Mannual display 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 met, the front-passenger seat can be occu-  
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator  
Z
Display messages  
270  
Display messages  
Possible causes/consequences and M Solutions  
lamp remains lit or goes out depends on how the automatic front-  
passenger front airbag deactivation system classifies the occu-  
pant.  
If the conditions are not met, the system is not operating correctly.  
X
Consult a qualified specialist workshop immediately.  
Further information on the automatic front-passenger front airbag  
deactivation feature (Y page 49).  
Front-passsseennggeerr  
The front-passenger front airbag is enabled during the journey  
airbag enabled See although:  
Owner's MManual  
R
a child, a small adult or an object weighing less than the system  
weight threshold is located on the front-passenger seat  
or  
R
the front-passenger seat is not occupied  
The system may detect objects or forces that are adding to the  
weight applied to the seat.  
WARNING  
G
The airbag may deploy unintentionally.  
This poses 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
Safeguard the vehicle against rolling away (Y page 184).  
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 there are no objects applying additional force to the  
seat.  
The system may otherwise detect the additional force and inter-  
pret the seat occupant's weight as greater than it actually is.  
X
Make sure that the seat is unoccupied, close the front-  
passenger door and switch on the ignition.  
X
Observe the PASSENGER AIR BAG indicator lamps in the centre  
console and the multifunction display and check the following:  
Seat unoccupied and ignition switched on:  
R
a self-diagnosis takes place. The PASSENGER AIR BAG OFF  
and PASSENGER AIR BAG ON indicator lamps light up simul-  
taneously for approximately six seconds  
R
the PASSENGER AIR BAG OFF indicator lamp must light up  
and remain on after the self-diagnosis. If the indicator lamp is  
on, the automatic front-passenger front airbag deactivation  
Display messages  
271  
Display messages  
Possible causes/consequences and M Solutions  
system has disabled the front-passenger front airbag  
(Y page 50)  
R
the Frontt-passseennggeerr aaiirrbbaagg eennaabblleedd SSeeee OOwwnneerr''ss  
Manual or Frontt-passsseennggeerr airbaag dissaabled See Own‐  
er's Mannual display messages must not be shown in the  
multifunction display  
X
X
Wait for a period of at least 60 seconds until the necessary sys-  
tem checks have been completed.  
Make sure that the display messages do not appear in the mul-  
tifunction display.  
If these conditions are met, the front-passenger seat can be occu-  
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator  
lamp remains lit or goes out depends on how the automatic front-  
passenger front airbag deactivation system classifies the occu-  
pant.  
If the conditions are not met, the system is not operating correctly.  
X
Consult a qualified specialist workshop immediately.  
Further information on the automatic front-passenger front airbag  
deactivation feature (Y page 49).  
Lights  
i Vehicles with LED light bulbs in the light clusters:  
The display message for the corresponding lamp only appears when all the LEDs in the lamp  
have failed.  
Display messages  
Possible causes/consequences and M Solutions  
The left or right-hand dipped-beam headlamp is faulty.  
b
Left dippeed beam  
or Right ddipped  
beam  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The left or right-hand trailer tail lamp is faulty.  
b
Trailer leeft tail  
lamporTrailer  
X
Consult the manufacturer's operating instructions.  
right taiil lamp  
Z
Display messages  
272  
Display messages  
Possible causes/consequences and M Solutions  
The left or right-hand trailer turn signal lamp is faulty.  
b
Trailer leeft turn  
signalorTrailerr  
X
Consult the manufacturer's operating instructions.  
right turnn signal  
The trailer brake lamp is faulty.  
b
Trailer brrake lampp  
X
Consult the manufacturer's operating instructions.  
The rear left-hand or rear right-hand turn signal is faulty.  
b
Rear left indica‐  
tor or Rear right  
indicator  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The front left-hand or front right-hand turn signal is faulty.  
b
Front leftt indica‐‐  
tor or Frontt right  
indiccator  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The turn signal in the left-hand or right-hand exterior mirror is  
faulty.  
b
Left mirrorr indica‐  
tor or Righht mir‐  
ror inddicator  
X
Consult a qualified specialist workshop.  
The third brake lamp is faulty.  
b
Third braake lampp  
X
Consult a qualified specialist workshop.  
The left or right-hand brake lamp is faulty.  
b
Left brake  
lamporRighht brake  
lamp  
X
Consult a qualified specialist workshop.  
The left or right-hand main-beam headlamp is faulty.  
b
Left mainn beam or  
Right maiin beam  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The left or right-hand licence plate lamp is faulty.  
b
Number plaate lampp  
X
Consult a qualified specialist workshop.  
Display messages  
273  
Display messages  
Possible causes/consequences and M Solutions  
The rear foglamp is faulty.  
b
Rear foglamp  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The front left or front right parking lamp is faulty.  
b
Front lefft parking  
lamp or Front  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
right parrkingg lampp  
X
Consult a qualified specialist workshop.  
The reversing lamp is faulty.  
b
Reversinng lighhtt  
X
Check whether you are permitted to replace the bulb yourself  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The left or right-hand tail lamp is faulty.  
b
Left taill lamp or  
X
Consult a qualified specialist workshop.  
Right taiil lamp  
The left or right-hand daytime driving lamp is faulty.  
b
X
Check whether you are permitted to replace the bulb yourself  
Left daytimme driv‐  
ing lamp or Right  
daytimee drivingg  
lamp  
(Y page 125).  
or  
X
Consult a qualified specialist workshop.  
The exterior lighting is faulty.  
b
Malfuncttioonn SSeeee  
Owner's MManual  
X
Consult a qualified specialist workshop.  
Vehicles with trailer tow hitch: a fuse may have blown.  
X
Pull over and stop the vehicle safely as soon as possible, paying  
attention to road and traffic conditions.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Check the fuses (Y page 355).  
X
If necessary, replace the blown fuse. Observe the warning notes  
as you do so.  
If the multifunction display still shows the display message:  
X
Consult a qualified specialist workshop.  
Z
Display messages  
274  
Display messages  
Possible causes/consequences and M Solutions  
The light sensor is faulty.  
b
AUTO lightss inoper‐  
ative  
X
Consult a qualified specialist workshop.  
The lights are still switched on when you leave the vehicle. A  
warning tone also sounds.  
b
Switch offf lights  
X
Turn the light switch to the à position.  
You are driving without dipped-beam headlamps.  
b
Switch on heeadlamps  
X
Turn the light switch to the L or à position.  
Adaptive Main-beam Adaptive Highbeam Assist is deactivated and temporarily inoper-  
Assist currrenttllyy  
unavaillabllee SSeeee  
Owner's MManual  
ative.  
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 again, the  
Adaptivve Mainn--bbeeaamm AAssssiisstt aavvaaiillaabbllee aaggaaiinn message is  
displayed.  
Adaptive Highbeam Assist is operational again.  
Adaptive Main-beam Adaptive Highbeam Assist is faulty.  
Assist inopperaattiivvee  
X
Consult a qualified specialist workshop.  
Display messages  
275  
Engine  
Display messages  
Possible causes/consequences and M Solutions  
The coolant level is too low.  
+
Top up cooolant See  
Owner'ss Manuuaall  
! 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 326).  
If you have to top up the coolant frequently:  
X
Contact a qualified specialist workshop and have the engine  
cooling system checked.  
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 putting the engine under heavy load as you do so, e.g.  
driving in mountainous terrain and stop-start traffic.  
The coolant is too hot.  
A warning tone also sounds.  
Coolant Sttopp vveehhii‐‐  
cle Switcch engine  
off  
WARNING  
G
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 traf-  
fic conditions, and switch off the engine.  
X
Safeguard the vehicle against rolling away (Y page 184).  
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  
otherwise be damaged.  
X
Pay attention to the coolant temperature display.  
If the temperature increases again:  
X
Consult a qualified specialist workshop immediately.  
Under normal operating conditions and with the specified coolant  
level, the coolant temperature may rise to 120 †.  
Z
Display messages  
276  
Display messages  
Possible causes/consequences and M Solutions  
The battery is not being charged.  
A warning tone also sounds.  
Possible causes:  
#
See Owner'ss Manual  
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 traf-  
fic conditions, and switch off the engine.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Consult a qualified specialist workshop.  
The battery is no longer being charged and the battery charge level  
is too low.  
A warning tone also sounds.  
#
Stop vehiccle See  
Owner's MManual  
X
Stop the vehicle immediately, paying attention to road and traf-  
fic conditions, and switch off the engine.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Observe the instructions in the # See Owner'ss Manual  
display message.  
X
Consult a qualified specialist workshop.  
The engine oil level has dropped to the minimum level.  
A warning tone also sounds.  
4
Check enng. oil  
lev. when next  
refuelllingg  
! Avoid long journeys when there is too little coolant in the cool-  
ing system. Otherwise the engine will be damaged.  
X
Check the oil level when next refuelling, at the latest  
(Y page 324).  
X
If necessary, top up the engine oil (Y page 325).  
If the engine oil needs topping up more often:  
X
Contact a qualified specialist workshop and have the engine  
checked.  
Information on approved engine oils can be obtained from any  
qualified specialist workshop or on the Internet at http://  
bevo.mercedes-benz.com.  
Display messages  
277  
Display messages  
Possible causes/consequences and M Solutions  
The engine oil level has dropped to the minimum level.  
4
Add 1 litree engine  
oil when neext refu‐  
elling  
! Avoid long journeys when there is too little coolant in the cool-  
ing system. Otherwise the engine will be damaged.  
X
Check the oil level when next refuelling, at the latest  
(Y page 324).  
X
If necessary, top up the engine oil (Y page 325).  
If the engine oil needs topping up more often:  
X
Contact a qualified specialist workshop and have the engine  
checked.  
Information on approved engine oils can be obtained from any  
qualified specialist workshop or on the Internet at http://  
bevo.mercedes-benz.com.  
The engine oil level is too low. There is a risk of engine damage.  
4
Engine oill level  
Stop vehicle  
X
Stop the vehicle immediately, paying attention to road and traf-  
fic conditions, and switch off the engine.  
X
Safeguard the vehicle against rolling away (Y page 184).  
Switch engine off  
X
Check the engine oil level (Y page 324).  
X
If necessary, top up the engine oil (Y page 325).  
The fuel level has dropped into the reserve range.  
Operation of the auxiliary heating is deactivated if the fuel level  
drops into the reserve range.  
æ
Reserve fueel level  
X
Refuel at the nearest filling station.  
There is very little fuel in the fuel tank.  
The auxiliary heating cannot be operated.  
ç
X
Refuel at the nearest filling station without fail.  
Vehicles with a diesel engine: the engine air filter is dirty and must  
be replaced.  
¸
Replace air ccleaner  
X
Consult a qualified specialist workshop.  
Vehicles with a diesel engine: there is water in the fuel filter. The  
water must be drained off.  
!
Clean the fuel fil‐  
ter  
X
Consult a qualified specialist workshop.  
Z
Display messages  
278  
Driving systems  
Display messages  
Possible causes/consequences and M Solutions  
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.  
À
Attention Assist:  
Take a break!  
X
If necessary, take a break.  
During long journeys, take regular breaks in good time so that you  
get enough rest.  
ATTENTION ASSIST is inoperative.  
À
Attention Assist  
inoperrative  
X
Consult a qualified specialist workshop.  
The HOLD function is deactivated. The vehicle is skidding.  
A warning tone also sounds.  
ë
Off  
X
Reactivate the HOLD function later (Y page 204).  
The HOLD function is deactivated. When the brake pedal is firmly  
depressed, an activation condition is not fulfilled.  
A warning tone also sounds.  
X
Check the activation conditions for the HOLD function  
(Y page 204).  
Lane Keeping  
Lane Keeping Assist is deactivated and temporarily inoperative.  
Possible causes:  
Assist currrently  
unavaillable See  
Owner's Manual  
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  
goes out.  
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
Safeguard the vehicle against rolling away (Y page 184).  
X
Clean the windscreen.  
Lane Keeping  
Assist inopeerativvee  
Lane Keeping Assist is faulty.  
X
Consult a qualified specialist workshop.  
Display messages  
279  
Display messages  
Possible causes/consequences and M Solutions  
Blind Spott Assist  
curreentlyy unavvaaiill‐‐  
able See OOwner's  
Manual  
Blind Spot Assist is temporarily inoperative.  
Possible causes:  
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 radar sensor system is outside the operating temperature  
range  
The yellow 9 indicator lamps also light up in the exterior mir-  
rors.  
Once the causes listed above no longer apply, the display message  
goes out.  
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
Safeguard the vehicle against rolling away (Y page 184).  
X
Restart the engine.  
Active Bliind Spott  
Assist noot avaaila‐‐  
ble whenn towing a  
trailerr See Own‐  
er's Manual.  
Blind Spot Assist is deactivated while towing a trailer.  
You have established the electrical connection between the trailer  
and your vehicle.  
X
Press a on the steering wheel to confirm the display mes-  
sage.  
Blind Spott Assist  
inoperrativvee  
Blind Spot Assist is faulty.  
The yellow 9 indicator lamps also light up in the exterior mir-  
rors.  
X
Consult a qualified specialist workshop.  
Park Assist cancel‐ The driver's door is open and the driver's seat belt has not been  
led  
fastened.  
X
Repeat the parking process with the seat belt fastened and the  
driver's door closed.  
You inadvertently touched the multifunction steering wheel while  
steering intervention was active.  
X
While steering intervention is active, make sure not to touch the  
multifunction steering wheel.  
The vehicle has started to skid and ESP® has intervened.  
X
Use Active Parking Assist again later (Y page 212).  
Z
Display messages  
280  
Display messages  
Possible causes/consequences and M Solutions  
Park Assist inoper‐ You have just carried out a large number of turning or parking  
ative  
manoeuvres.  
Active Parking Assist will become available again after approx-  
imately ten minutes (Y page 212).  
X
Pull over and stop the vehicle safely as soon as possible, paying  
attention to road and traffic conditions.  
X
Switch off and restart the engine.  
If the multifunction display still shows the display message:  
X
Consult a qualified specialist workshop.  
PARKTRONIC is faulty.  
X
Consult a qualified specialist workshop.  
Park Assist  
switcheed off  
The vehicle is parked. A warning tone also sounds.  
The display message disappears automatically.  
Trafficc Sign  
Traffic Sign Assist is temporarily inoperative.  
Possible causes:  
Assist cuurrenttllyy  
unavaillabllee SSeeee  
Owner's MManual  
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 dis-  
play message disappears.  
Traffic Sign Assist is operational again.  
Trafficc Sign  
Assisst inooperaattiivvee  
Traffic Sign Assist is faulty.  
X
Consult a qualified specialist workshop.  
DISTRONIC PLUSS off DISTRONIC PLUS has been deactivated (Y page 196).  
If it was not deactivated by the driver, a warning tone also sounds.  
DISTRONIIC PLUSS  
availabble agaiinn  
DISTRONIC PLUS is operational again after having been tempo-  
rarily unavailable. You can now reactivate DISTRONIC PLUS  
(Y page 196).  
Display messages  
281  
Display messages  
DISTRONIC PLUS cur‐ DISTRONIC PLUS is temporarily inoperative.  
Possible causes/consequences and M Solutions  
rently unavvailabllee  
See Owner'ss Manual  
Possible causes:  
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.  
Once the causes listed above no longer apply, the display message  
goes out.  
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
Safeguard the vehicle against rolling away (Y page 184).  
X
Restart the engine.  
DISTRONIIC PLUSS  
inoperrativvee  
DISTRONIC PLUS is faulty. Adaptive Brake Assist may also have  
failed.  
A warning tone also sounds.  
X
Consult a qualified specialist workshop.  
DISTRONIC PLUS sus‐ You have depressed the accelerator pedal. DISTRONIC PLUS is no  
pended  
longer controlling the speed of the vehicle.  
X
Remove your foot from the accelerator pedal.  
DISTRONIIC PLUSS  
- - - kkmm//h  
An activation condition for DISTRONIC PLUS is not fulfilled.  
X
Check the activation conditions for DISTRONIC PLUS  
(Y page 196).  
DISTRONIC PLUS and DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone  
SPEEDTROONIICC iinnoopp‐‐  
erative  
also sounds.  
X
Consult a qualified specialist workshop.  
Cruise control and SPEEDTRONIC and cruise control are malfunctioning.  
SPEEDTROONIICC iinnoopp‐‐  
erative  
A warning tone also sounds.  
X
Consult a qualified specialist workshop.  
Z
Display messages  
282  
Display messages  
Possible causes/consequences and M Solutions  
SPEEDTRONNIICC ssuuss‐‐  
pended  
If you depress the accelerator pedal beyond the pressure point  
(kickdown), SPEEDTRONIC is switched to passive mode.  
The speed limitation is not active.  
X
Drive slower than the stored speed and without kickdown.  
X
Call up the last speed stored again.  
or  
X
Set a new speed.  
When the display message disappears, the speed limitation is  
active.  
R
Cruise coontroll  
- - - kkmm//h  
A condition for activating cruise control has not been met.  
You have tried to store a speed below 30 km/h, for example.  
®
®
R
ESP is deactivated The yellow ESP OFF warning lamp is lit.  
X
If conditions permit, drive faster than 30 km/h and store the  
speed.  
or  
X
Check the activation conditions for cruise control (Y page 191).  
or  
X
®
Reactivate ESP (Y page 248).  
120 km/h!  
Maximumm speed  
exceeded  
Only for certain countries: the maximum speed has been excee-  
ded.  
In addition, the multifunction display shows 120 km/h!.  
X
Drive more slowly.  
Display messages  
283  
Tyres  
Display messages  
Possible causes/consequences and M Solutions  
Tyre pressssuurree  
Check tyre(s))  
The tyre pressure loss warning system has detected a significant  
loss in pressure.  
A warning tone also sounds.  
Possible causes:  
R
you have changed the positions of the wheels and tyres or fitted  
new wheels and tyres  
R
the tyre pressure in one or more tyres has dropped  
WARNING  
G
Underinflated tyres pose the following risks:  
R
the tyres may burst, especially as the load and vehicle speed  
increase  
R
the tyres may wear excessively and/or unevenly, which may  
greatly impair tyre 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  
manoeuvres. Pay attention to the traffic conditions as you do so.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Check the tyres and, if necessary, follow the instructions for a  
flat tyre (Y page 340).  
X
Check the tyre pressures and, if necessary, correct the tyre  
pressure.  
X
Restart the tyre pressure loss warning system when the tyre  
pressure is correct (Y page 364).  
Check tyre pprreess‐‐  
The tyre pressure loss warning system generated a display mes-  
sures then restart sage and has not been restarted since.  
Run Flat IInnddiiccaattoorr  
X
Set the correct tyre pressure in all four tyres.  
X
Restart the tyre pressure loss warning system (Y page 364).  
Run Flat Indicator The tyre pressure loss warning system is faulty.  
inoperativvee  
X
Consult a qualified specialist workshop.  
Rectify ttyyrree pprreess‐‐ The tyre pressure is too low in at least one of the tyres, or the tyre  
sure  
pressure difference between the wheels is too great.  
X
Check the tyre pressures at the next opportunity (Y page 364).  
X
If necessary, correct the tyre pressure.  
X
Restart the tyre pressure monitor (Y page 366).  
Z
Display messages  
284  
Display messages  
Possible causes/consequences and M Solutions  
Check tyyre(s))  
The tyre pressure in one or more tyres has dropped significantly.  
The wheel position appears in the multifunction display.  
A warning tone also sounds.  
WARNING  
G
Underinflated tyres pose the following risks:  
R
the tyres may burst, especially as the load and vehicle speed  
increase  
R
the tyres may wear excessively and/or unevenly, which may  
greatly impair tyre 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  
manoeuvres. Pay attention to the traffic conditions as you do so.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Check the tyres and, if necessary, follow the instructions for a  
flat tyre (Y page 340).  
X
Check the tyre pressure (Y page 364).  
X
If necessary, correct the tyre pressure.  
Warning tyre defect The tyre pressure in one or more tyres has dropped suddenly. The  
wheel position appears in the multifunction display.  
WARNING  
G
If you drive with a flat tyre, there is a risk of the following hazards:  
R
a flat tyre affects the ability to steer or brake the vehicle  
R
you could lose control of the vehicle  
R
continued driving with a flat tyre 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  
manoeuvres. Pay attention to the traffic conditions as you do so.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Check the tyres and, if necessary, follow the instructions for a  
flat tyre (Y page 340).  
Display messages  
285  
Display messages  
Possible causes/consequences and M Solutions  
Tyre presss. moni‐  
tor currrently  
unavaillabllee  
No signals can be received from the tyre pressure sensors due to  
strong RF interference. The tyre pressure monitor is temporarily  
malfunctioning.  
X
Drive on.  
The tyre pressure monitor restarts automatically as soon as the  
cause has been rectified.  
Wheel sennsor((ss))  
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  
multifunction display.  
X
Have the faulty tyre pressure sensor replaced at a qualified spe-  
cialist workshop.  
Tyre presss. moni‐  
The wheels fitted do not have suitable tyre pressure sensors. The  
tor inoperativvee No tyre pressure monitor is deactivated.  
wheel ssensorss  
X
Fit wheels with suitable tyre pressure sensors.  
The tyre pressure monitor is activated automatically after driv-  
ing for a few minutes.  
Tyre presss. moni‐  
tor inopperativvee  
The tyre pressure monitor is faulty.  
X
Consult a qualified specialist workshop.  
Vehicle  
Display messages  
Possible causes/consequences and M Solutions  
Depress bbrake to  
start eengine  
You have attempted to start the engine with the transmission in  
position N without depressing the brake pedal.  
X
Depress the brake pedal.  
To shift oout of P  
or N, deepress  
brake annd start  
engine  
You have attempted to shift the transmission to position R or D  
without starting the engine.  
X
Start the engine.  
X
Depress the brake pedal.  
i It is only possible to shift the transmission from position P to  
the desired position if you depress the brake pedal. Only then  
can the parking lock be deactivated. If you do not depress the  
brake pedal, the DIRECT SELECT lever can still be moved but the  
parking lock remains engaged.  
i At transmission fluid temperatures below Ò20 † you can only  
shift out of position P into another transmission position when  
the engine is running.  
Z
Display messages  
286  
Display messages  
Possible causes/consequences and M Solutions  
Apply brrake to  
deselect PParkk (P)  
position  
You have attempted to shift the transmission to position R, N or D  
without depressing the brake pedal.  
X
Depress the brake pedal.  
Risk of veehicle  
rolling TTranssmiiss‐‐  
sion not in P  
The driver's door is open or not fully closed and the transmission  
is in position R, N or D.  
A warning tone also sounds.  
WARNING  
G
The vehicle may roll away.  
There is a risk of an accident.  
X
Shift the transmission to position P.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Close the driver's door fully.  
Without chhanginngg  
gear, consuult work‐  
shop  
You cannot change the transmission position due to a malfunction.  
A warning tone also sounds.  
If transmission position D is selected:  
X
Drive to a qualified specialist workshop without shifting the  
transmission from position D.  
If transmission position R, N or P is selected:  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Consult a qualified specialist workshop.  
Only selecct Park  
(P) when vehicle  
is statioonaryy  
The vehicle is moving.  
X
Pull over and stop the vehicle safely as soon as possible, paying  
attention to road and traffic conditions.  
X
Shift the transmission to position P.  
Reversiing not  
The automatic transmission is malfunctioning. You cannot drive in  
poss. Consult work‐ reverse.  
shop  
X
Consult a qualified specialist workshop.  
Transmisssiioonn MMaall‐‐  
function  
The automatic transmission is malfunctioning.  
X
Consult a qualified specialist workshop.  
Transmisssiioonn MMaall‐‐  
functioon Stopp  
The automatic transmission is malfunctioning.  
X
Pull over and stop the vehicle safely as soon as possible, paying  
attention to road and traffic conditions.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Consult a qualified specialist workshop.  
Display messages  
287  
Display messages  
Possible causes/consequences and M Solutions  
Stop vehicle Shift The automatic transmission has overheated.  
to P Leavee engine  
running  
X
Drive on carefully.  
If the display message disappears, the automatic transmission  
is available again.  
If the multifunction display still shows the display message:  
X
Pull over and stop the vehicle safely as soon as possible, paying  
attention to road and traffic conditions.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Wait until the automatic transmission has cooled down and the  
display message goes out.  
Auxiliaryy battteerryy  
malfunnctioonn  
The auxiliary battery for the automatic transmission is no longer  
being charged.  
X
Consult a qualified specialist workshop.  
X
Until then, set the transmission to position P before you switch  
off the engine.  
X
Before leaving the vehicle, apply the electric parking brake.  
Clutch oveerheaatteedd  
The clutch is under considerable load and the permitted operating  
Avoid pulling away temperature has been exceeded. A warning tone also sounds.  
If neceessary,,  
quickly rreleasee  
and engagge the  
clutch  
Avoid frequent pulling away and driving at walking pace over lon-  
ger distances.  
X
Pull over and stop the vehicle safely as soon as possible, paying  
attention to road and traffic conditions.  
X
Safeguard the vehicle against rolling away (Y page 184).  
X
Leave the engine running.  
The clutch is cooled more quickly with the engine running.  
or  
X
If possible, continue driving at a steady speed.  
X
Remove your foot from the clutch pedal and do not allow the  
clutch to slip.  
The clutch may also cool down during the journey.  
It may take several minutes for it to cool down. When the clutch  
has cooled down, the display message disappears. The clutch is  
fully operational again.  
For enginee start  
depresss clutch  
You have attempted to start the engine without depressing the  
clutch pedal.  
X
Fully depress the clutch pedal.  
X
Restart the engine.  
Z
Display messages  
288  
Display messages  
Possible causes/consequences and M Solutions  
The engine has stalled while pulling away, e.g. because the clutch  
pedal was released too quickly.  
X
Depress the clutch pedal again.  
The engine starts automatically.  
X
Slowly release the clutch pedal to pull away.  
Trans. oil overhea‐ Mercedes-AMG vehicles: the transmission oil has overheated.  
ted Drive oon with  
care  
Manual drive program M and the temporarily active manual drive  
program are no longer available. Engine power output is reduced.  
X
Allow the vehicle to cool down.  
4matic currrenttllyy  
unavaiilabllee  
4MATIC has overheated. The vehicle is only driven by the front  
wheels.  
X
Drive on.  
The airflow cools 4MATIC more quickly.  
When the display message goes out, 4MATIC is available again  
and the vehicle is driven by all four wheels.  
4matic inoperaattiivvee 4MATIC is malfunctioning. The vehicle is only driven by the front  
wheels.  
X
Consult a qualified specialist workshop.  
The tailgate is open.  
A
WARNING  
G
When the engine is running, exhaust gases can enter the vehicle  
interior if the tailgate is open.  
There is a risk of poisoning.  
X
Close the tailgate.  
The bonnet is open.  
A warning tone also sounds.  
?
WARNING  
G
The open bonnet may then 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
Safeguard the vehicle against rolling away (Y page 184).  
X
Close the bonnet.  

Related Topics

On-board computer/Displays
Useful information Important safety notes Displays and operation Menus and submenus Warning and indicator lamps in the instrument cluster

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