Display messages
Possible causes/consequences and
M
MSolutions Refill AdBlue Eng.
Refill AdBlue Eng.
start not possible start not possible
The AdBlue
®
tank is empty. A warning tone also sounds. You can no
longer start the engine.
X Add at least 3.5 l of AdBlue ®
(Y page 164).
X Turn the ignition on for approximately one minute.
The system requires approximately one minute after refilling to
detect the change in the AdBlue ®
level.
X Start the engine. Check AdBlue See Check AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
system is malfunctioning. A warning tone also sounds.
X Consult a qualified specialist workshop. Eng. start not pos‐
Eng. start not pos‐
sible in ... mi sible in ... mi
The AdBlue
®
system is malfunctioning. A warning tone also sounds.
X Consult a qualified specialist workshop immediately. Eng. start not pos‐
Eng. start not pos‐
sible sible
The AdBlue
®
system is malfunctioning. A warning tone also sounds.
You can no longer start the engine.
X Consult a qualified specialist workshop immediately. Driving systems
Display messages
Possible causes/consequences and
M
MSolutions À
ATTENTION ASSIST: ATTENTION ASSIST:
Take a break! Take a break! Based on certain criteria, ATTENTION ASSIST has detected fatigue or
increasing lapses in concentration on the part of the driver. A warning tone also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so that you get enough rest. À
ATTENTION ASSIST ATTENTION ASSIST
inoperative inoperative ATTENTION ASSIST is inoperative.
X Consult a qualified specialist workshop. Á
Vehicle rising Vehicle rising The vehicle rises to the level you have selected.
Á
Vehicle rising Vehicle rising
Please wait Please wait The vehicle level is too low when the vehicle is stationary. A warning
tone also sounds.
X Do not pull away.
The vehicle level is set when the display message disappears. 266
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Á
Stop vehicle Vehi‐ Stop vehicle Vehi‐
cle too low cle too low You have pulled away while the vehicle level was too low.
AIR BODY CONTROL sets the vehicle to the selected level after a short
period.
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Wait until the display message disappears before pulling away. AIR BODY CONTROL is faulty. A warning tone also sounds.
X Do not drive at speeds greater than 80 km/h.
X Make only slight steering movements. Otherwise, the front wings or
the tyres could be damaged if the steering input is too great.
X Listen for scraping sounds.
X Stop the vehicle, paying attention to road and traffic conditions, and
set a higher vehicle level.
Depending on the fault, it may be possible to raise the vehicle.
X Consult a qualified specialist workshop. Á
Please reduce speed Please reduce speed You cannot change the vehicle level. Possible causes:
R You are driving too quickly for the selected vehicle level.
R You are driving too quickly with a trailer or the trailer tow hitch
socket is being used, e.g. for a rear-mounted bicycle rack
X Drive more slowly and then select the desired vehicle level again
(Y page 188).
X Observe the notes on towing a trailer (Y page 219).Á
Compressor is cool‐ Compressor is cool‐
ing ing You have selected a higher vehicle level. The compressor first needs
to cool down because of frequent level changes within a short space of time.
X Drive in a manner appropriate for the current vehicle level.
X Ensure sufficient ground clearance.
X Allow the compressor to cool down.
When the compressor has cooled down, the display message dis-
appears. The vehicle then continues rising to the selected vehicle
level. Á
Malfunction Malfunction AIR BODY CONTROL is malfunctioning. The vehicle's handling char-
acteristics may be impaired.
X Drive as appropriate for the current vehicle level, but do not exceed
80 km/h.
X Ensure sufficient ground clearance.
X Consult a qualified specialist workshop. Á
Malfunction Malfunction DYNAMIC BODY CONTROL is malfunctioning. The vehicle's handling
characteristics may be impaired.
X Do not drive at speeds greater than 80 km/h.
X Consult a qualified specialist workshop. Display
messages
267On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions Lane
Lane
Keeping
Keeping Assist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual orActive Lane
Active Lane
Keeping Assist cur‐
Keeping Assist cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual Lane Keeping Assist or Active Lane Keeping Assist is deactivated and
temporarily inoperative.
Possible causes:
R The windscreen is dirty in the camera's field of vision
R Visibility is impaired due to heavy rain, snow or fog
R There have been no lane markings for an extended period
R The lane markings are worn, dark or covered, e.g. by dirt or snow
Once the causes listed above no longer apply, the display message
disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Clean the windscreen. Lane Lane
Keeping
Keeping Assist
Assist
inoperative
inoperative or
Active
Active Lane
LaneKeeping
Keeping
Assist inoperative
Assist inoperative Lane Keeping Assist or Active Lane Keeping Assist is faulty.
X Consult a qualified specialist workshop. Blind Spot Assist
Blind Spot Assist
currently unavaila‐ currently unavaila‐
ble ble
See
SeeOwner's
Owner's Man‐
Man‐
ual
ual orActive Blind
Active Blind
Spot Assist cur‐
Spot Assist cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual Blind Spot Assist or Active Blind Spot Assist is temporarily inoperative.
Possible causes:
R The radar sensor system is outside the operating temperature range
R The radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
Once the causes listed above no longer apply, the display message
disappears.
Blind Spot Assist or Active Blind Spot Assist is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Restart the engine. Blind Spot Assist Blind Spot Assist
not available when not available when
towing a trailer towing a trailer
See Owner's Manual See Owner's Manual
or
Active Blind Active Blind
Spot Assist not
Spot Assist not
available when tow‐ available when tow‐
ing a trailer See ing a trailer See
Owner's Manual Owner's Manual Blind Spot Assist or Active Blind Spot Assist is deactivated during
trailer-towing.
You have established the electrical connection between the trailer and
your vehicle.
X Press aon the steering wheel to confirm the display message. 268
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Blind Spot Assist
Blind Spot Assist
inoperative inoperative
or
Active Blind Spot
Active Blind Spot
Assist inoperative Assist inoperative Blind Spot Assist or Active Blind Spot Assist is faulty.
X Consult a qualified specialist workshop. Park Assist cancel‐
Park Assist cancel‐
led led The driver's door is open.
X Repeat the parking space measurement and parking manoeuvre
with the driver's door closed. You touched the multifunction steering wheel while steering inter-
vention 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 194).Park Assist inoper‐ Park Assist inoper‐
ative ative PARKTRONIC is malfunctioning or faulty.
X Follow the instructions and helpful hints in the "Problems with
PARKTRONIC" section (Y page 193).
If the multifunction display still shows the display message: X Consult a qualified specialist workshop. Active Parking Assist is unavailable or malfunctioning.
X Switch off the ignition and restart the engine.
If Active Parking Assist continues to be unavailable (the jsymbol
does not appear on the multifunction display):
X Consult a qualified specialist workshop. Park Assist Park Assist
switched off switched off The vehicle is parked. A warning tone also sounds.
The display message disappears automatically. Traffic
Traffic
Sign
SignAssist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Traffic Sign Assist is temporarily inoperative.
Possible causes:
R The windscreen is dirty in the camera's field of vision
R Visibility is impaired due to heavy rain, snow or fog
X Clean the windscreen.
If the system detects that the camera is fully operational, the display message disappears.
Traffic Sign Assist is operational again. Traffic Traffic
Sign
SignAssist
Assist
inoperative
inoperative Traffic Sign Assist is faulty.
X Consult a qualified specialist workshop. ë
Off Off The HOLD function is deactivated. The vehicle has started to skid.
A warning tone also sounds.
X Reactivate the HOLD function later (Y page 187). Display
messages
269On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is no longer fulfilled.
A warning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 186). DISTRONIC PLUS off DISTRONIC PLUS off DISTRONIC PLUS has been deactivated (Y
page 178).
If it was not deactivated by the driver, a warning tone also sounds. DISTRONIC PLUS
DISTRONIC PLUS
available again available again DISTRONIC PLUS is operational again after having been temporarily
unavailable. You can now reactivate DISTRONIC PLUS (Y
page 178).DISTRONIC PLUS cur‐ DISTRONIC PLUS cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual DISTRONIC PLUS is temporarily inoperative.
Steering Assist and Stop&Go Pilot are also temporarily inoperative.
Possible causes:
R The radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation
R The system is outside the operating temperature range
R The on-board voltage is too low.
A warning tone also sounds.
Once the causes listed above no longer apply, the display message
disappears.
DISTRONIC PLUS is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Restart the engine. DISTRONIC DISTRONIC
PLUS
PLUSinop‐
inop‐
erative
erative DISTRONIC PLUS is malfunctioning.
The following may have also failed:
R BAS PLUS with Cross-Traffic Assist
R PRE-SAFE ®
Brake
A warning tone also sounds.
X Consult a qualified specialist workshop. DISTRONIC PLUS sus‐ DISTRONIC PLUS sus‐
pended pended You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal. DISTRONIC PLUS
DISTRONIC PLUS
- - - mph - - - mph An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS (Y page 178).DISTRONIC PLUS and
DISTRONIC PLUS and
SPEEDTRONIC inoper‐ SPEEDTRONIC inoper‐
ative ative DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone also
sounds.
Steering Assist and Stop&Go Pilot are therefore also unavailable.
X Consult a qualified specialist workshop. 270
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions DTR+: steering
DTR+: steering
assist. currently assist. currently
unavailable unavailable
See
SeeOwn‐
Own‐
er's Manual
er's Manual Steering Assist and Stop&Go Pilot are 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 an extended period
R The lane markings are worn, dark or covered, e.g. by dirt or snow
Once the causes listed above no longer apply, the display message
disappears.
Steering Assist and Stop&Go Pilot are operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Clean the windscreen. DTR+: steering DTR+: steering
assistant inopera‐ assistant inopera‐
tive tive Steering Assist and Stop&Go Pilot are faulty.
However, the DISTRONIC PLUS functions are still available.
A warning tone also sounds.
X Consult a qualified specialist workshop. Cruise control and Cruise control and
SPEEDTRONIC inoper‐ SPEEDTRONIC inoper‐
ative ative SPEEDTRONIC and cruise control are faulty.
A warning tone also sounds.
X Consult a qualified specialist workshop. Speed Speed
limit
limit(winter
(winter
tyres) XXX mph
tyres) XXX mph You have reached the stored speed limit for winter tyres. It is not
possible to exceed this speed. You can suppress the display message
by pressing the abutton. The display message will not reappear
until the ignition has been switched on again. SPEEDTRONIC suspen‐ SPEEDTRONIC suspen‐
ded ded When you depress the accelerator pedal beyond the pressure point
(kickdown), SPEEDTRONIC is switched to passive mode.
The speed limitation is not active.
X Drive more slowly than the stored speed without kickdown.
or X Set a new speed.
or X Call up the last speed stored again.
When the display message disappears, the speed limitation is active. SPEEDTRONIC Limit SPEEDTRONIC Limit
- - - mph - - - mph SPEEDTRONIC cannot be activated, as not all the activation conditions
have been met.
X Check the activation conditions for SPEEDTRONIC (Y page 176). Display
messages
271On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions Cruise control
Cruise control
- - - mph - - - mph R
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 at a speed greater than 30 km/h and
store the speed.
or X Check the activation conditions for cruise control (Y page 174).
or
X Reactivate ESP ®
(Y page 240).
or
X Reactivate ESP ®
in Mercedes-AMG vehicles (Y page 75).Cruise control off Cruise control off Cruise control has been deactivated.
If a warning tone also sounds, cruise control has deactivated auto-
matically (Y page 174). ð
Maximum Maximum
speed
speedexcee‐
excee‐
ded
ded For certain countries only: the maximum speed has been exceeded.
X Drive more slowly. 272
Display
messagesOn-board computer and displays
Tyres
Display messages
Possible causes/consequences and
M
MSolutions Tyre
Tyre
pressure
pressure Check
Check
tyres
tyres 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
G WARNING
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 Secure the vehicle against rolling away (Y page 167).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 341).
X Check the tyre pressures and, if necessary, correct the tyre pres-
sure.
X Restart the tyre pressure loss warning system when the tyre pres-
sure is correct (Y page 361). Check tyre pres‐ Check tyre pres‐
sures then restart sures then restart
Run Flat Indicator Run Flat Indicator The tyre pressure loss warning system generated a display message
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 361).Run Flat Indicator Run Flat Indicator
inoperative inoperative The tyre pressure loss warning system is faulty.
X Consult a qualified specialist workshop. Rectify tyre pres‐
Rectify tyre pres‐
sure sure The tyre pressure is too low in at least one of the tyres, or the tyre
pressure difference between the wheels is too great.
X Check the tyre pressures at the next opportunity (Y page 361).
X If necessary, correct the tyre pressure.
X Restart the tyre pressure monitor (Y page 363). Display
messages
273On-board computer and displays Z