2005-2010 Mercedes B Class SUV On-board computer and displays -> Display messages User Manual
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On-board computer and displays -> Display messages for Your Mercedes B Class SUV First Generation (2005-2010)

Display messages
General notes
Display messages appear in themultifunction display.
Display messages with graphic symbols are simplified in theOwner's Manual and may differ
fromthe 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 you stop and park the vehicle, please observe the notes on the HOLD function
(Y page 162) and parking (Y page 144).
Hiding display messages
You can hide a number of the low-priority display messages.
X
Press the a or % button on the steering wheel to hide the display message.
The display message is cleared.
High-priority display messages are red.
You cannot hide display messages of the highest priority. The multifunction display shows
these messages continuously until the causes for the messages have been remedied.
Message memory
The on-board computer saves certain display messages. You can call up the display messages
in the message memory.
X
Press = or ; on the steering wheel to select the
Serv. menu.
If there are display messages, the multifunction displayshows
2 messages, for example.
X
Press the 9 or : button to select the entry, e.g.
2 messages.
X
Confirm with a.
X
Press the 9 or : button to scroll through the display messages.
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, the corresponding display messages are also deleted.
Display messages
205
On-board computer and displays
Z
Safety systems
Display messages Possible causes/consequences and M Solutions
!÷
currently unavail‐
able See Owner's
Manual
ABS (Anti-lock Braking System), ESP
®
(Electronic Stability Pro-
gram), BAS (Brake Assist), PRE-SAFE
®
, the HOLD function, hill
start assist and ESP
®
trailer stabilisation are temporarily not avail-
able.
The adaptive brake lights and BAS PLUS may also have failed.
In addition, the ÷, å and ! warning lamps 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.
G
WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
This limits the steerability of the vehicle when braking and may
increase the braking distance.
If ESP
®
is deactivated or not operational, the vehicle's stability
during standard driving manoeuvres is reduced.
There is a risk of 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 display message continues to be displayed:
X
Drive on carefully.
X
Visit a qualified specialist workshop.
!÷
inoperative See
Owner's Manual
ABS, ESP
®
, BAS, PRE-SAFE
®
, the HOLD function, hill start assist
and ESP
®
trailer stabilisation are not available due to a malfunc-
tion.
The adaptive brake lights and BAS PLUS may also have failed.
In addition, the J, ÷, å and ! warning lamps light
up in the instrument cluster.
ATTENTION ASSIST is deactivated.
G
WARNING
206
Display messages
On-board computer and displays
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 lockifyou
brake hard, for example.
This limits the steerability of the vehicle when braking and may
increase the braking distance.
If ESP
®
is deactivated or not operational, the vehicle's stability
during standard driving manoeuvres is reduced.
There is a risk of accident.
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
÷
currently unavail‐
able See Owner's
Manual
ESP
®
, BAS, PRE-SAFE
®
, the HOLD function, hill start assist and
ESP
®
trailer stabilisation are temporarily not available.
The adaptive brake lights and BAS PLUS may also have failed.
In addition, the ÷ and å warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
The self-diagnosis function might not be complete, for example.
G
WARNING
The brake system continues to function normally, but without the
functions listed above.
If ESP
®
is deactivated or not operational, the vehicle's stability
during standard driving manoeuvres is reduced.
There is a risk of 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 display message continues to be displayed:
X
Drive on carefully.
X
Visit a qualified specialist workshop.
Display messages
207
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
÷
inoperative See
Owner's Manual
ESP
®
, BAS, PRE-SAFE
®
, the HOLD function, hill start assist and
ESP
®
trailer stabilisation are notavailable due to a malfunction.
The adaptive brake lights and BAS PLUS may also have failed.
In addition, the ÷ and å warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without the
functions listed above.
If ESP
®
is deactivated or not operational, the vehicle's stability
during standard driving manoeuvres is reduced.
There is a risk of accident.
X
Drive on carefully.
X
Visitaqualified specialist workshop.
T!
÷
inoperative See
Owner's Manual
EBD (electronic brake force distribution), ABS, ESP
®
, BAS, PRE-
SAFE
®
, the HOLD function,hill start assist and ESP
®
trailer stabi-
lisationare not available due to a malfunction.
The adaptive brake lights and BAS PLUS may also have failed.
In addition, the ÷, å and ! warning lamps in the instru-
ment cluster light up and a warning tone sounds.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but withoutthe
functions listed above. The wheels could therefore lock if you
brake hard, for example.
This limits the steerability of the vehicle when braking and may
increase the braking distance.
If ESP
®
is deactivated or not operational, the vehicle's stability
during standard driving manoeuvres is reduced.
There is a risk of accident.
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
!
Release parking
brake
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 145).
You are driving with the electric parking brake applied.
X
Release the electric parking brake manually.
208
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
The red ! indicatorlamp flashes and a warning tone sounds.
You are making an emergency stop using the electric parking
brake (Y page 145).
!
Parking brake See
Owner's Manual
The yellow ! warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X
Switch the ignition off.
X
Press the electric parking brake handle for at least tenseconds.
X
Vehicles with manual transmission: engage first gear.
X
Vehicles with automatic transmission: shift the transmission
to P.
X
Consult a qualified specialist workshop.
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: release the electric park-
ing brake using the automatic emergency release
(Y page 145).
X
Vehicles with automatic transmission: release the electric
parking brake automatically (Y page 145).
If the yellow ! warning lamp remains lit or continues to flash:
X
Do not drive on.
X
Consult a qualified specialist workshop.
Display messages
209
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
The red ! indicatorlamp 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
Engage the electric parking brake manually.
If the red ! indicator lamp continues to flash:
X
Do not drive on.
X
Secure the vehicle against rolling away (Y page 299).
X
Vehicles with manual transmission: engage first gear.
X
Vehicles with automatic transmission: shiftthe transmission
to P.
X
Turn the front wheels towards the kerb.
X
Consult a qualified specialist workshop.
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
Engage 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 P.
X
Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake:
X
Vehicles with manual transmission: release the electric park-
ing brake using the automatic emergency release
(Y page 145).
X
Vehicles with automatic transmission: release the electric
parking brake automatically (Y page 145).
If the electric parking brake can still not be released:
X
Consult a qualified specialist workshop.
210
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
The yellow ! warning lamp lights up. If you manually apply or
release the electric parkingbrake, 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.
You can release the electric parking brake using the automatic
emergency release (Y page 145).
X
Vehicles with automatic transmission: shift the transmission
to P as the electric parking brake is not applied automatically.
X
Visitaqualified specialist workshop.
i
If you do not wish the electric parking brake to be applied,
leave the ignition switched on, e.g. when washing the vehicle in
an automatic car wash or when having the vehicle towed. Excep-
tion:when having the vehicle towed with the front axle raised
(Y page 284).
!
Pkg brake inopera‐
tive
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.
X
Remove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
X
Apply or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
X
Switch off the ignition and turn it back on.
X
Apply or release the electric parking brake.
If the electric parking brake can still not be released:
X
Consult a qualified specialist workshop.
The display message is only shown while the vehicle is in motion.
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 P.
X
Visit a qualified specialist workshop.
Display messages
211
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
!
Turn on the igni‐
tion to release
the parking brake
The red ! indicatorlamp is lit.
You attempted to release the electric parking brakewhile the igni-
tion was switched off.
X
Turn the key to position 1 in the ignition lock.
J
Check brake fluid
level
There is insufficient brake fluid in the brake fluid reservoir.
In addition, the red J warning lamp in the instrument cluster
lights up and a warning tone sounds.
G
WARNING
The braking effect may be impaired.
There is a risk of 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
Engage the electric parking brake.
X
Do not top up the brake fluid. Topping up will not remedy the
fault.
X
Consult a qualified specialist workshop.
#
Check brake wear
The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop.
PRE-SAFE
inoperative See
Owner's Manual
Important functions of PRE-SAFE
®
have failed. All other occupant
safety systems, e.g. airbags, remain available.
X
Visit a qualified specialist workshop immediately.
212
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual
BASPLUS is temporarily inoperative. Possible causes:
R
the radarsensor system cover in the radiator grille is dirty.
R
function is impaired due to heavy rain or snow.
R
the sensors in the bumpers are dirty.
R
the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R
the system is outside the operating temperature range.
R
the on-board voltage is too low.
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
Engage the electric parking brake.
X
Clean the radar sensor system cover in the radiator grille
(Y page 270).
X
Clean the bumpers (Y page 270).
X
Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
BASPLUS is operational again.
PRE-SAFE
Functions limited
See Owner's Manual
BAS PLUS is faulty. The distance warning signal may also have
failed.
X
Visit a qualified specialist workshop.
ü
If the symbol appears in the multifunction display, aseat belt
tongue has been inserted into a rear seat belt buckle.
For further information on the status indicator for the rear seat
belts, (Y page 46).
ý
If the symbol appears in the multifunction display, aseat belt
tongue has not been inserted in a rear seat belt buckle.
G
WARNING
If you do not wear the seat belt correctly, or it is not properly
engaged in the buckle, it no longer offers the intended level of
protection in the event of an accident.
There is an increased risk of injury.
X
If necessary, ask the occupants in the rear to fasten their seat
belts.
For further information on the status indicator for the rear seat
belts, (Y page 46).
Display messages
213
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
6
Restraint sys. mal‐
function Consult
workshop
There is a malfunction in the SRS (Supplemental RestraintSys-
tem). The 6 warning lamp also lights up in the instrumentclus-
ter.
G
WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the eventofanaccident, may not be triggered at all.
There is an increased riskofinjury.
X
Visitaqualified specialist workshop.
For further information on occupant safety, see (Y page 38).
6
Front left malfunc‐
tion Consult work‐
shop or Front
right malfunction
Consult workshop
SRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster.
G
WARNING
The airbags or belt tensionersmay either be triggered uninten-
tionally or, in the event of an accident, may notbe triggered at all.
There is an increased risk of injury.
X
Visit a qualified specialist workshop.
6
Rear left malfunc‐
tion Consult work‐
shop or Rear
right malfunction
Consult workshop
SRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster.
G
WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered at all.
There is an increased risk of injury.
X
Visit a qualified specialist workshop.
214
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
6
Rear centre mal‐
function Consult
workshop
SRS has malfunctioned at the rear centre. The 6 warning lamp
also lights up in the instrumentcluster.
G
WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the eventofanaccident, may not be triggered at all.
There is an increased riskofinjury.
X
Visitaqualified specialist workshop.
6
Left windowbag mal‐
function Consult
workshop or Right
windowbag malfunc‐
tion Consult work‐
shop
There is a malfunction in the left-hand and/or right-hand window-
bag. The 6 warning lamp also lights up in the instrument clus-
ter.
G
WARNING
The left-hand and/or right-hand windowbag may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered at all.
There is an increased risk of injury.
X
Visit a qualified specialist workshop.
Lights
i
Display messages about LEDs:
This display message will only appear if all LEDs have failed.
Display messages Possible causes/consequences and M Solutions
b
Left cornering
light or Right cor‐
nering light
The left or right-hand cornering light is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left dipped beam
or Right dipped
beam
The left or right-hand dipped-beam headlamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
Display messages
215
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
b
Trailer left tail
lamp or Trailer
right tail lamp
The leftorright-hand trailer tail lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X
Visit a qualified specialist workshop.
b
Trailer left indi‐
cator or Trailer
right indicator
The left or right-hand trailer turnsignal lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X
Visit a qualified specialist workshop.
b
Trailer brake lamp
The trailer brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X
Visit a qualified specialist workshop.
b
Rear left indica‐
tor or Rear right
indicator
The rear left-hand or rear right-hand turnsignal is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Front left indica‐
tor or Front right
indicator
The front left-hand or front right-hand turn signal is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left mirror indica‐
tor or Right mir‐
ror indicator
The turn signal in the left-hand or right-hand exterior mirror is
faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Third brake lamp
The third brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
216
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
b
Left brake lamp or
Right brake lamp
The leftorright-hand brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left-hand tail
lamp/brake lamp or
Right-hand tail
lamp/brake lamp
The left or right-hand tail lamp/brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left main beam or
Right main beam
The left or right-hand high beam is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Number plate lamp
The left or right-hand licence plate lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left fog
lamporRight fog
lamp
The left-hand or right-hand front foglamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Rear fog lamp
The rear foglamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Front left parking
lamp or Front
right parking lamp
The front left or front right parking lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
Display messages
217
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
b
Reversing light
The reversing lamp is faulty.
X
Checkwhether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left tail lamp or
Right tail lamp
The left or right-hand tail lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Left daytime driv‐
ing lamp
or
Right daytime
driving lamp
The left or right-hand daytime driving lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 103).
or
X
Visit a qualified specialist workshop.
b
Intell. Light Sys‐
tem inoperative
The Intelligent Light System is faulty. The lights remain available
without the Intelligent Light System.
X
Visit a qualified specialist workshop.
b
Malfunction See
Owner's Manual
The exterior lighting is faulty.
X
Visit a qualified specialist workshop.
b
Malfunction See
Owner's Manual
The exterior lighting is faulty.
X
Visit a qualified specialist workshop.
Vehicles with trailer tow hitch: a fuse may have blown.
X
Check the fuses (Y page 287).
X
If necessary, replace the blown fuse. Observe the warning notes
as you do so.
If the display message continues to be displayed:
X
Visit a qualified specialist workshop.
b
AUTO lights inoper‐
ative
The light sensor is faulty.
X
Visit a qualified specialist workshop.
218
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
b
Switch off lights
The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turnthe light switch to Ã.
Adaptive Main-beam
Assist inoperative
Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop.
Adaptive Main-beam
Assist currently
unavailable See
Owner's Manual
Adaptive Highbeam Assist is deactivated and temporarily inoper-
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
Cleanthe windscreen.
If the system detects that the camera is fully operational again,
the
Adaptive Main-beam Assist available again message
is displayed.
Adaptive Highbeam Assist is operational again.
Engine
Display messages Possible causes/consequences and M Solutions
+
Top up coolant See
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 265).
X
If the coolant needs topping up more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop.
?
The fan motor is faulty.
X
If the coolant temperature is less than 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 on
mountain roads and stop-start traffic.
Display messages
219
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
?
Coolant Stop vehi‐
cle Switch engine
off
The coolantis too hot.
Awarning tone also sounds.
G
WARNING
Do notdrive when yourengine is overheated. Thiscan cause some
fluids which may have leaked into the engine compartmentto
catch fire.
Steamfrom the overheated engine can also 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
Engage the electric parking brake.
X
Leave the vehicle and keep a safe distance from the vehicle 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 under 120 †. The engine may
otherwise be damaged.
X
Pay attention to the coolant temperature display.
X
If the temperature increases again, visit a qualified specialist
workshop immediately.
The reading may rise up to 120 †undernormal driving conditions
if the coolant has been filled correctly.
#
The battery is not being charged.
Possible causes:
R
faulty alternator
R
torn poly-V-belt
R
a malfunction in the electronics
X
Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X
Open the bonnet.
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 OK:
X
Visit a qualified specialist workshop immediately.
220
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
4
Check eng. oil
lev. when next
refuelling
The engine oil level has dropped to the minimum level.
Awarning tone also sounds.
X
Checkthe oil level when next refuelling, at the latest
(Y page 263).
X
If necessary, top up the engine oil (Y page 264).
X
Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
æ
Reserve fuel level
The fuel level has dropped into the reserve range.
X
Refuel at the nearest filling station.
ç
There is only a very small amount of fuel in the fuel tank.
X
Refuel at the nearest filling station without fail.
¸
Replace air cleaner
Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop.
!
Clean the fuel fil‐
ter
Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop.
Driving systems
Display messages Possible causes/consequences and M Solutions
À
Attention Assist:
Drowsiness detec‐
ted
Based on certain criteria, ATTENTION ASSIST has detected fatigue
or alack of concentration on thepart of thedriver. A warning tone
also sounds.
X
If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest.
À
Attention Assist
inoperative
ATTENTION ASSIST is inoperative.
X
Visitaqualified specialist workshop.
Display messages
221
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
Speed Limit Assist
currently unavail‐
able See Owner's
Manual
Speed Limit Assistis 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.
X
Cleanthe windscreen.
If the system detects that the camera is fully operational, the dis-
play message disappears.
Speed Limit Assist is operational again.
Speed Limit Assist:
Unavailable in
this country
Speed Limit Assist is only available in certain countries.
X
Drive on.
Speed Limit Assist is available again as soon as you drive into a
country in which its use is approved.
Speed Limit Assist
inoperative
Speed Limit Assist is faulty.
X
Visit a qualified specialist workshop.
ë
Off
The HOLD function is deactivated. The vehicle is skidding.
Awarning tone also sounds.
X
Reactivate the HOLD function later (Y page 162).
Radar sensor
deactivated See
Owner's Manual
The radar sensor system is deactivated.
X
Checkwhether or not the radar sensor system may be activated
(Y page 320).
X
Switch on the radar sensor system (Y page 203).
Radar sensor
deactivated autom.
See Owner's Manual
Vehicles with a navigation system: the vehicle is close to a radio
telescope facility and is therefore prohibited from transmitting any
radar signals. The radar sensor system has switched off automat-
ically.
Blind Spot Assist (Y page 177) is deactivated automatically if it is
activated. The yellow 9 indicator lamps also light up in the
exterior mirrors.
X
Drive on.
Blind Spot Assist is available again as soon as the vehicle is far
enough away from the radio-astronomical installation
(Y page 320).
222
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
Vehicles with Becker
®
MAP PILOT: if the Becker
®
MAP PILOT is
notconnected, the radar sensor system is deactivated automati-
cally.
Blind Spot Assist is not available.
X
Connect the Becker
®
MAP PILOT; see the separate operating
instructions.
Lane Keeping
Assist currently
unavailable See
Owner's Manual
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 are no lane markings for a longer period.
R
the lane markings are worn, dark or covered, e.g. by dirt or snow.
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
Engage the electric parking brake.
X
Clean the windscreen.
If the system detects that the camera is fully operational, the dis-
play message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again.
Lane Keeping
Assist inoperative
Lane Keeping Assist is faulty.
X
Visit a qualified specialist workshop.
Display messages
223
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
Blind Spot Assist
currently unavail‐
able See Owner's
Manual
Blind Spot Assistis temporarily inoperative. Possible causes:
R
you have established the electrical connection between the
trailer and your vehicle.
R
the sensors are dirty.
R
function is impaired due to heavy rain or snow.
R
the radar sensor system is outside the operating temperature
range.
R
the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
The yellow 9 indicator lamps also light up in the exterior mir-
rors.
X
When towing a trailer, confirm the display message with a.
If you are driving without a trailer and the displaymessage does
not disappear:
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Engage the electric parking brake.
X
Clean the sensors (Y page 270).
X
Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
Blind Spot Assist is operational again.
Blind Spot Assist
inoperative
Blind Spot Assist is faulty.
The yellow 9 indicator lamps also light up in the exterior mir-
rors.
X
Visit a qualified specialist workshop.
Park Assist
cancelled
The driver's door is open and the driver's seat belt has not been
fastened.
X
Repeat the parking process with the seat belt fastened and the
driver's door closed.
You have inadvertently touched the multifunction steering wheel
while steering intervention was active.
X
While steering intervention is active, make sure that the multi-
function steering wheel is not touched.
The vehicle has started to skid and ESP
®
has intervened.
X
Use Active Parking Assist again later (Y page 166).
224
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
Park Assist
inoperative
You have just carried out a large number of turning or parking
manoeuvres.
Active Parking Assistwill become available again after approx-
imately ten minutes (Y page 166).
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 display message continues to be displayed:
X
Visit a qualified specialist workshop.
PARKTRONIC is faulty.
X
Visit a qualified specialist workshop.
DISTRONIC PLUS
off
DISTRONIC PLUS has been deactivated (Y page 154). If it was
deactivated automatically, a warning tone also sounds.
DISTRONIC PLUS
available again
DISTRONIC PLUS is operational again after having been tempo-
rarily unavailable. You can now reactivate DISTRONIC PLUS
(Y page 154).
Display messages
225
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
DISTRONIC PLUS
currently unavail‐
able See Owner's
Manual
DISTRONIC is deactivated and temporarily inoperative. Possible
causes:
R
the DISTRONIC PLUS cover in the radiator grille is dirty.
R
function is impaired due to heavy rain or snow.
R
the sensors in the bumpers are dirty.
R
the radarsensor 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.
Awarning tone also sounds.
If the display message does notdisappear:
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Engage the electric parking brake.
X
Clean the DISTRONIC PLUS cover in the radiator grille
(Y page 270).
X
Clean the bumpers (Y page 270).
X
Restartthe engine.
If the system detects that the sensors are fully operational, the
display message disappears.
DISTRONIC is operational again.
DISTRONIC PLUS
inoperative
DISTRONIC PLUS is faulty. BAS PLUS (Brake Assist PLUS) may
also have failed.
Awarning tone also sounds.
X
Visitaqualified specialist workshop.
DISTRONIC PLUS
inactive
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
--- km/h
An activation condition for DISTRONIC PLUS is not fulfilled.
X
Check the activation conditions for DISTRONIC PLUS
(Y page 156).
DISTRONIC PLUS and
SPEEDTRONIC
inoperative
DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone
also sounds.
X
Visit a qualified specialist workshop.
226
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
Cruise control and
SPEEDTRONIC
inoperative
Cruise control and SPEEDTRONIC are malfunctioning.
Awarning tone also sounds.
X
Visitaqualified specialist workshop.
Limit
--- km/h
While depressing the accelerator pedal beyond the pressure point
(kickdown), SPEEDTRONIC cannot be activated.
Cruise control
--- km/h
A condition for activating cruise control has not been met.
You have tried to store aspeed below 30 km/h, for example.
X
If conditions permit, drive faster than 30 km/h and store the
speed.
X
Check the activation conditions for cruise control
(Y page 150).
120 km/h
Maximum speed
exceeded
Only for certain countries: the maximum speed has been excee-
ded.
In addition, the multifunction display shows
120 km/h.
X
Drive slower.
Display messages
227
On-board computer and displays
Z
Tyres
Display messages Possible causes/consequences and M Solutions
Tyre pressure
Check tyres
The tyre pressure loss warning system has detected a significant
loss in pressure.
Awarning tone also sounds.
G
WARNING
Underinflated or overinflated tyres pose the following risks:
R
they may burst, especially as the load and vehicle speed
increase.
R
they may wear excessively and/or unevenly, whichmay greatly
impair tyre traction.
R
the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a riskofaccident.
X
Stop the vehicle withoutmaking any suddensteering or braking
manoeuvres.Pay attentionto the traffic conditions as you do
so.
X
If there is a flat tyre, inspect the tyres (Y page 276).
X
Check the tyre pressures and, if necessary, set to the correct
tyre pressure.
X
Restart the tyre pressure loss warning system when the tyre
pressure is correct(Ypage 297).
For further information on tyre pressure, see (Y page 295).
Check tyre pres‐
sures
then restart Run
Flat Indicator
The tyre pressure loss warning system generated a display mes-
sage and has not been restarted since.
X
Set the correct tyre pressure in all four tyres.
X
Restart the tyre pressure loss warning system (Y page 297).
Run Flat Indicator
inoperative
The tyre pressure loss warning system is faulty.
X
Visit a qualified specialist workshop.
228
Display messages
On-board computer and displays
Vehicle
Display messages Possible causes/consequences and M Solutions
To start engine,
shift to either P
or N
You have attempted to start the engine with the transmission in
position R or D.
X
Shift the transmission to position P or N.
Auxiliary battery
malfunction
The auxiliary battery for the automatic transmission is no longer
being charged.
X
Visit a qualified specialist workshop at the next opportunity.
X
Until then, set the automatic transmission to position P before
you switch off the engine.
X
Before leaving the vehicle, apply the electricparking brake.
Apply brake to
deselect
Park (P) position
You have attempted to movethe transmission selector lever to
position D, R or N without depressing the brake pedal.
X
Depress the brake pedal.
Vehicle
not in position P
The driver's door is open and the transmission is in position R, N
or D.
Awarning tone also sounds.
X
Shift the transmission to position P.
X
Engage the electric parking brake.
Without changing
gear,
consult workshop
You cannotchange the transmission position due to a malfunction.
Awarning 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
Consult a qualified specialist workshop.
Only select Park
(P)
when vehicle is
stationary
The vehicle is moving.
X
Pull overand stop the vehicle safely as soonas possible, paying
attention to road and traffic conditions.
X
Shift the transmission to position P.
Display messages
229
On-board computer and displays
Z
Display messages Possible causes/consequences and M Solutions
A
The tailgate is open.
G
WARNING
Whenthe 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.
G
WARNING
The open bonnet may block your view when the vehicle is in
motion.
There is a risk of accident.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Engage the electric parking brake.
X
Close the bonnet.
C
At least one door is open. Awarning tone also sounds.
X
Close all doors.
j
Check trailer
hitch lock
The trailer tow hitch is notcorrectly engaged.
Awarning tone also sounds.
X
Stop the vehicle immediately, paying attentiontoroad and traf-
fic conditions, and switch off the engine.
X
Engage the electric parking brake.
X
Allow the trailer tow hitch ball coupling to engage in the end
position (Y page 183).
Otherwise, the trailer may detach itself.
D
Power steering mal‐
function See Own‐
er's Manual
The power steering assistance is faulty. You will need to use more
force to steer.
Awarning tone also sounds.
X
Checkwhether 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.
230
Display messages
On-board computer and displays
Display messages Possible causes/consequences and M Solutions
Telephone No
service
Your vehicle is outside the network provider's transmitter/
receiver range.
X
Wait until the mobile phone operational readiness symbol
appears in the multifunction display.
¥
Top up washer fluid
The washer fluid level in thewasher fluid reservoir has dropped
below the minimum.
X
Top up the washerfluid (Y page 265).
Key
Displaymessages Possible causes/consequences and M Solutions
+
Key does not
belong to vehicle
You have put the wrong key in the ignitionlock.
X
Use the correct key.
+
Replace key
The key needs to be replaced.
X
Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
Seat belts
Problem Possible causes/consequences and M Solutions
ü
Only for certain coun-
tries: the red seat belt
warning lamp lights up
for six seconds after
the engine starts.
The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt (Y page 44).
ü
Only for certain coun-
tries: the red seat belt
warning lamp lights up
after the engine starts.
In addition, a warning
tone sounds for up to
six seconds.
The driver's seat belt is not fastened.
X
Fasten your seat belt (Y page 44).
The warning tone ceases.
Warning and indicator lamps in the instrument cluster
231
On-board computer and displays
Z

Related Topics

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

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