MERCEDES-BENZ A-CLASS HATCHBACK 2015 Owners Manual

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 a lack of 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. ë
Off Off The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
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 currently Assist currently
unavailable See unavailable See
Owner's Manual 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 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 Lane Keeping
Assist inoperative Assist inoperative Lane Keeping Assist is faulty.
X Consult a qualified specialist workshop. 278
Display
messagesOn-board computer/Displays

Display messages
Possible causes/consequences and
M
MSolutions Blind Spot Assist
Blind Spot Assist
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual 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 9indicator 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 Blind Spot Active Blind Spot
Assist not availa‐ Assist not availa‐
ble when towing a ble when towing a
trailer See Own‐ trailer See Own‐
er's Manual 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 aon the steering wheel to confirm the display mes-
sage. Blind Spot Assist Blind Spot Assist
inoperative inoperative Blind Spot Assist is faulty.
The yellow
9indicator lamps also light up in the exterior mir-
rors.
X Consult a qualified specialist workshop. Park Park
Assist
Assist cancel‐
cancel‐
led
led 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 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). Display
messages
279On-board computer/Displays Z

Display messages
Possible causes/consequences and
M
MSolutions Park
Park
Assist
Assist inoper‐
inoper‐
ative
ative You have just carried out a large number of turning or parking
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 Park Assist
switched off switched off The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
Traffic Sign Traffic Sign
Assist currently Assist currently
unavailable See unavailable See
Owner's Manual Owner's Manual 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 dis-
play message disappears.
Traffic Sign Assist is operational again. Traffic Sign Traffic Sign
Assist inoperative Assist inoperative Traffic Sign Assist is faulty.
X Consult a qualified specialist workshop. DISTRONIC PLUS off
DISTRONIC PLUS off DISTRONIC PLUS has been deactivated (Y
page 196).
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 tempo-
rarily unavailable. You can now reactivate DISTRONIC PLUS
(Y
page 196). 280
Display
messagesOn-board computer/Displays

Display messages
Possible causes/consequences and
M
MSolutions DISTRONIC
DISTRONIC
PLUS
PLUScur‐
cur‐
rently
rently unavailable
unavailable
See Owner's Manual
See Owner's Manual DISTRONIC PLUS is temporarily inoperative.
Possible causes:
R the radar sensor system is temporarily inoperative, e.g. due to
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. DISTRONIC PLUS DISTRONIC PLUS
inoperative inoperative DISTRONIC PLUS is faulty. Adaptive Brake Assist may also have
failed.
A warning tone also sounds.
X Consult a qualified specialist workshop. DISTRONIC DISTRONIC
PLUS
PLUSsus‐
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
- - - km/h - - - km/h An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS
(Y page 196). DISTRONIC
DISTRONIC
PLUS
PLUSand
and
SPEEDTRONIC inop‐
SPEEDTRONIC inop‐
erative erative DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone
also sounds.
X Consult a qualified specialist workshop. Cruise Cruise
control
control and
and
SPEEDTRONIC inop‐
SPEEDTRONIC inop‐
erative erative SPEEDTRONIC and cruise control are malfunctioning.
A warning tone also sounds.
X Consult a qualified specialist workshop. Display
messages
281On-board computer/Displays Z

Display messages
Possible causes/consequences and
M
MSolutions SPEEDTRONIC sus‐
SPEEDTRONIC sus‐
pended 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. 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 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!
120 km/h!
Maximum speed Maximum speed
exceeded exceeded Only for certain countries: the maximum speed has been excee-
ded.
In addition, the multifunction display shows
120 km/h! 120 km/h!.
X Drive more slowly. 282
Display
messagesOn-board computer/Displays

Tyres
Display messages
Possible causes/consequences and
M
MSolutions Tyre pressure
Tyre pressure
Check tyre(s) 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
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 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 pres‐ Check tyre pres‐
sures sures
then
thenrestart
restart
Run Flat Indicator
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 364).Run Run
Flat
Flat Indicator
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 364).
X If necessary, correct the tyre pressure.
X Restart the tyre pressure monitor (Y page 366). Display
messages
283On-board computer/Displays Z

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 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 Warning
tyre
tyredefect
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 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).284
Display
messagesOn-board computer/Displays

Display messages
Possible causes/consequences and
M
MSolutions Tyre press. moni‐
Tyre press. moni‐
tor currently tor currently
unavailable unavailable 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 sensor(s) Wheel sensor(s)
missing missing There is no signal from the tyre pressure sensor of one or several
wheels. The pressure of the affected tyre is not displayed in the
multifunction display.
X Have the faulty tyre pressure sensor replaced at a qualified spe-
cialist workshop. Tyre press. moni‐ Tyre press. moni‐
tor tor
inoperative
inoperative No
No
wheel sensors
wheel sensors The wheels fitted do not have suitable tyre pressure sensors. The
tyre pressure monitor is deactivated.
X Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitor is activated automatically after driv-
ing for a few minutes. Tyre press. moni‐ Tyre press. moni‐
tor inoperative tor inoperative The tyre pressure monitor is faulty.
X Consult a qualified specialist workshop. Vehicle
Display messages
Possible causes/consequences and
M
MSolutions Depress brake to
Depress brake to
start engine start engine You have attempted to start the engine with the transmission in
position
Nwithout depressing the brake pedal.
X Depress the brake pedal. To shift out of P To shift out of P
or N, depress or N, depress
brake and start brake and start
engine engine You have attempted to shift the transmission to position
Ror 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
Pto
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 Pinto another transmission position when
the engine is running. Display
messages
285On-board computer/Displays Z

Display messages
Possible causes/consequences and
M
MSolutions Apply brake to
Apply brake to
deselect Park (P) deselect Park (P)
position position You have attempted to shift the transmission to position
R,Nor D
without depressing the brake pedal.
X Depress the brake pedal. 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 Safeguard the vehicle against rolling away (Y page 184).
X Close the driver's door fully. Without changing Without changing
gear, gear,
consult
consult work‐
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
transmission from position D.
If transmission position R,Nor Pis selected:
X Safeguard the vehicle against rolling away (Y page 184).
X Consult a qualified specialist workshop. Only select Park Only select Park
(P) when vehicle (P) when vehicle
is stationary is stationary 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.Reversing not Reversing not
poss. poss.
Consult
Consult work‐
work‐
shop
shop 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 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. 286
Display
messagesOn-board computer/Displays

Display messages
Possible causes/consequences and
M
MSolutions Stop
Stop
vehicle
vehicle Shift
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 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. 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, set 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 Avoid
pulling
pulling away
away
If necessary,
If necessary,
quickly release quickly release
and engage the and engage the
clutch 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 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 engine start For engine start
depress clutch depress clutch You have attempted to start the engine without depressing the
clutch pedal.
X Fully depress the clutch pedal.
X Restart the engine. Display
messages
287On-board computer/Displays Z