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. Ã
inoperative inoperative DSR (Downhill Speed Regulation) is deactivated due to a fault.
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). 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 187). Lane Lane
Keeping
Keeping Assist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Lane Keeping Assist is deactivated and temporarily inoperative.
Possible causes:
R the windscreen is dirty in the camera's field of vision
R visibility is impaired due to heavy rain, snow or fog
R there have been no lane markings for an extended period
R the lane markings are worn away, dark or covered up, e.g. by dirt or
snow
Once the causes listed above no longer apply, the display message
disappears.
Lane Keeping Assist is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Clean the windscreen. Lane Lane
Keeping
Keeping Assist
Assist
inoperative
inoperative Lane Keeping Assist is faulty.
X Consult a qualified specialist workshop. 252
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Parking Assist PARKTRONIC is faulty.
X Consult a qualified specialist workshop. Parking Pilot ended
Parking Pilot ended The vehicle is parked. A warning tone also sounds.
The display message disappears automatically. Traffic
Traffic
Sign
Sign Assist
Assist
currently unavaila‐
currently unavaila‐
ble ble See
SeeOwner's
Owner's Man‐
Man‐
ual
ual Traffic Sign Assist is temporarily inoperative.
Possible causes:
R the windscreen is dirty in the camera's field of vision
R visibility is impaired due to heavy rain, snow or fog
X Clean the windscreen.
If the system detects that the camera is fully operational, the display message disappears.
Traffic Sign Assist is operational again. Traffic Traffic
Sign
Sign Assist
Assist
inoperative
inoperative Traffic Sign Assist is faulty.
X Consult a qualified specialist workshop. Distance Pilot off
Distance Pilot off Distance Pilot DISTRONIC is deactivated (Y
page 184).
If it was not deactivated by the driver, a warning tone also sounds. Distance Pilot
Distance Pilot
available again available again Distance Pilot DISTRONIC is operational again after having been tem-
porarily unavailable. You can now reactivate Distance Pilot
DISTRONIC (Y page 182). Distance Pilot cur‐
Distance Pilot cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual Distance Pilot DISTRONIC is temporarily inoperative.
Possible causes:
R the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
R the system is outside the operating temperature range
R the on-board voltage is too low
A warning tone also sounds.
Once the causes listed above no longer apply, the display message
disappears.
Distance Pilot DISTRONIC 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 166).
X Restart the engine. Distance Distance
Pilot
Pilotinop‐
inop‐
erative
erative Distance Pilot DISTRONIC is faulty. Situation-dependent braking
assistance may also have failed.
A warning tone also sounds.
X Consult a qualified specialist workshop. 254
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Distance Pilot pas‐
Distance Pilot pas‐
sive sive You have depressed the accelerator pedal. Distance Pilot DISTRONIC
is no longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal. Distance Pilot
Distance Pilot
- - - km/h - - - km/h A condition for activating Distance Pilot DISTRONIC has not been met.
X Check the activation conditions for Distance Pilot DISTRONIC
(Y page 182). Distance Pilot and Distance Pilot and
Limiter inoperative Limiter inoperative Distance Pilot DISTRONIC and speed limiter are faulty. A warning tone
also sounds.
X Consult a qualified specialist workshop. Cruise control and Cruise control and
Limiter inoperative Limiter inoperative Cruise control and speed limiter are faulty.
A warning tone also sounds.
X Consult a qualified specialist workshop. Limiter passive
Limiter passive If you depress the accelerator pedal beyond the pressure point (kick-
down), the limiter 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. Cruise control Cruise control
- - - km/h - - - km/h 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 177).
or
X Reactivate ESP ®
(Y page 227). 120 km/h! 120 km/h!
Maximum Maximum
speed
speedexcee‐
excee‐
ded
ded For certain countries only: the maximum speed has been exceeded.
In addition, the multifunction display shows 120 km/h!
120 km/h!.
X Drive more slowly. Display
messages
255On-board computer and displays Z
Tyres
Display messages
Possible causes/consequences and
M
MSolutions Tyre
Tyre
pressure
pressure Check
Check
tyre(s)
tyre(s) The tyre pressure loss warning system has detected a significant loss
in pressure.
A warning tone also sounds.
Possible cause:
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 166).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 317).
X Check and, if necessary, correct the tyre pressures.
X Restart the tyre pressure loss warning system when the tyre pres-
sure is correct (Y page 339). 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 339).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 340).
X If necessary, correct the tyre pressure.
X Restart the tyre pressure monitor (Y page 341).256
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Check tyre(s)
Check tyre(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.
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 166).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 317).
X Check the tyre pressure (Y page 340).
X If necessary, correct the tyre pressure. Warning tyre defect Warning tyre defect The tyre pressure in one or more tyres has dropped suddenly. The
wheel position appears in the multifunction display.
G WARNING
If you drive with a flat tyre, there is a risk of the following hazards: R a flat tyre impairs 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 Secure the vehicle against rolling away (Y page 166).
X Check the tyres and, if necessary, follow the instructions for a flat
tyre (Y page 317). Tyre Tyre
press.
press. monitor
monitor
currently unavaila‐
currently unavaila‐
ble ble No signals can be received from the tyre pressure sensors due to
strong RF interference. The tyre pressure monitor is temporarily mal-
functioning.
X Drive on.
The tyre pressure monitor starts automatically as soon as the cause
has been rectified. Display
messages
257On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions Risk of vehicle
Risk of vehicle
rolling Transmis‐ rolling Transmis‐
sion not in P sion not in P The driver's door is open or not fully closed and the transmission is in
position R,Nor D.
A warning tone also sounds.
G WARNING
The vehicle may roll away.
There is a risk of an accident.
X Shift the transmission to position P.
X Secure the vehicle against rolling away (Y page 166).
X Close the driver's door fully. Without changing
Without changing
gear, consult work‐ gear, consult work‐
shop shop You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission position
Dis selected:
X Drive to a qualified specialist workshop without shifting the trans-
mission from position D.
If transmission position R,Nor Pis selected:
X Secure the vehicle against rolling away (Y page 166).
X Consult a qualified specialist workshop. Only select Park Only select Park
(P) (P)
when
when vehicle
vehicle is
is
stationary
stationary The vehicle is moving.
X
Stop the vehicle, paying attention to road and traffic conditions.
X Shift the transmission to position P.Apply brake to Apply brake to
select R select R You have attempted to shift from position
Dor Nto transmission
position R.
X Shift the transmission to position Rwhen the brake pedal is
depressed. Reversing
Reversing
not
notposs.
poss.
Consult workshop
Consult workshop The automatic transmission is malfunctioning. You cannot drive in
reverse.
X Consult a qualified specialist workshop. Transmission Mal‐
Transmission Mal‐
function function The automatic transmission is malfunctioning.
X Consult a qualified specialist workshop. Transmission Mal‐
Transmission Mal‐
function Stop function Stop The automatic transmission is malfunctioning.
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Consult a qualified specialist workshop. Display
messages
259On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions Stop vehicle Shift
Stop vehicle Shift
to P Leave engine to P Leave engine
running running The automatic transmission has overheated.
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 Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Wait until the automatic transmission has cooled down and the dis-
play message goes out. Auxiliary battery Auxiliary battery
malfunction malfunction The auxiliary battery for the automatic transmission is no longer being
charged.
X Consult a qualified specialist workshop.
X Until then, always shift the transmission to position Pbefore you
switch off the engine.
X Before leaving the vehicle, apply the electric parking brake. Clutch overheated
Clutch overheated
Avoid pulling away Avoid pulling away
If necessary, If necessary,
quickly quickly
release
release and
and
engage the clutch
engage the clutch The clutch is under considerable load and the permitted operating
temperature has been exceeded. A warning tone also sounds.
Avoid frequent pulling away and driving at walking pace over longer
distances.
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Leave the engine running.
The clutch is cooled more quickly with the engine running.
or X If possible, drive on 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 engine start For engine start
depress clutch depress clutch You have attempted to start the engine without depressing the clutch
pedal.
X Depress the clutch pedal.
X Restart the engine. 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. 260
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Trans. oil overhea‐
Trans. oil overhea‐
ted Drive on with ted Drive on with
care care Mercedes-AMG vehicles: the transmission oil has overheated.
Manual drive program Mand the temporarily active manual drive pro-
gram are no longer available. Engine power output is reduced.
X Allow the vehicle to cool down. 4matic currently
4matic currently
unavailable unavailable 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 inoperative 4matic inoperative 4MATIC is malfunctioning. The vehicle is only driven by the front
wheels.
X Consult a qualified specialist workshop. A The tailgate is open
G WARNING
When the engine is running, exhaust gases can enter the vehicle inte- rior if the tailgate is open.
There is a risk of poisoning.
X Close the tailgate. ? The bonnet is open.
A warning tone also sounds.
G WARNING
The open bonnet may then block your view when the vehicle is in
motion.
There is a risk of an accident.
X Stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions.
X Secure the vehicle against rolling away (Y page 166).
X Close the bonnet. Active bonnet mal‐ Active bonnet mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The active bonnet (pedestrian protection) is inoperative due to a mal-
function or because it has already been triggered.
X Consult a qualified specialist workshop. C At least one door is open. A warning tone also sounds.
X Close all doors. Display
messages
261On-board computer and displays Z