engine MERCEDES-BENZ CLA 2014 Owners Manual

Display messagesPossible causes/consequences and
Solutions
Tire Press.
Monitor Currently
Unavailable
Due to a source of radiointerference, no signals can be received
from the wheel sensors.The tire pressure monitor is temporarily
malfunctioning.
XDrive on.
The tire pressure monitor restarts automatically as soon as the
problem has been solved.
TirePress.
Sensor(s) Missing
There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire is not displayed in the
multifunction display.
XHave the faulty tire pressure sensor replaced at a qualified
specialist workshop.
Tire Pressure
Monitor
Inoperative No
Wheel Sensors
The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
XMount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes.
Tire Press.
Monitor
Inoperative
The tire pressure monitor is faulty.
XVisit a qualified specialist workshop.
Vehicle
Display messagesPossible causes/consequences and
Solutions
Shiftto'P'or'N'
to Start Engine
You have attempted to start the engine with the transmission in
positionRorD.
XShift the transmission to positionPorN.
Auxiliary Battery
Malfunction
The auxiliary battery for the automatic transmission is no longer
being charged.
XVisit a qualified specialist workshop at the next opportunity.
XUntil then, set the automatic transmission to positionPbefore
you switch off the engine.
XBefore leaving the vehicle, apply the electric parking brake.
Depress Brake to
Start Engine
You have attempted to start the engine with the transmission in
positionNwithout depressing the brake pedal.
XDepress the brake pedal.
236Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
ToDeselectPorN,
Depress Brake and
Start Engine
You have attempted to shift the transmissionto positionRorD
without starting the engine.
XStart the engine.
XDepress the brake pedal.
iIt is only possible to shift the transmission from positionPto
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, you can move the DIRECT SELECT lever but the
parking lock remains engaged.
iAt transmission fluid temperatures below4 ‡ (20 †) you
can only shift out of positionPinto another transmission
position when the engine is running.
Apply Brake to
Shift from 'P'
You have attempted to move the transmission selector lever to
positionR,NorDwithout depressing the brake pedal.
XDepress the brake pedal.
Transmission Not
in P
Risk of Vehicle
Rolling Away
The driver's door is open and the transmission is in positionR,N
orD.
Awarning tone also sounds.
XShift the transmission to positionP.
XSecure the vehicle against rolling away (Ypage 153).
Service Required
DoNotShiftGears
Visit Dealer
You cannotchange the transmission position due to a malfunction.
Awarning tone also sounds.
If transmission positionDis selected:
XDrive to a qualified specialist workshop without shifting the
transmission from positionD.
If transmission positionR,NorPis selected:
XNotify a qualified specialist workshop or breakdown service.
Only Sift to 'P'
when Vehicle
is Stationary
The vehicle is moving.
XPull overand stop the vehicle safely as soonas possible, paying
attention to road and traffic conditions.
XShift the transmission to positionP.
Reversing Not
Possible Service
Required
The automatic transmission is malfunctioning. You cannot back
up.
XVisit a qualified specialist workshop.
Display messages237
On-board computer and displays
Z

Display messagesPossible causes/consequences and
Solutions
Transmission
malfunction
The automatictransmission is malfunctioning.
XVisitaqualified specialist workshop.
Transmission
Malfunction Stop
The automatic transmission is malfunctioning.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 153).
XConsult a qualified specialist workshop.
StopVehicleShift
to P Leave Engine
Running
The automatic transmission has overheated.
XDrive on carefully.
The automatic transmission is available again when the display
message goes out.
If the display message continues to be displayed:
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 153).
XWait until the automatic transmission has cooled down and the
display message has disappeared.
Trans. Oil
Overheated Drive
on with Care
AMG vehicles: the transmission oil has overheated.
Manual drive programMand the temporarily active manual drive
program are no longer available. The engine power output is
reduced.
XAllow the vehicle to cool down.
4matic Currently
Unavailable
4MATIC (permanentall-wheeldrive) has overheated. The vehicle
is only drivenby the frontwheels.
XDrive 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 Inoperative4MATIC is malfunctioning. The vehicle is only driven by the front
wheels.
XVisit a qualified specialist workshop.
The trunk lid is open.
XClose the trunk lid.
238Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
Wiper
Malfunctioning
The windshield wipers are malfunctioning.
XVisit a qualified specialist workshop.
Hazard Warning
Flashers
Malfunctioning
The hazard warning lamps are faulty.
XVisit a qualified specialist workshop.
SmartKey
Display messagesPossible causes/consequences and
Solutions

Key Does Not
Belong to Vehicle
You have put the wrong SmartKey in the ignition lock.
XUse the correct SmartKey.

TakeYourKeyfrom
Ignition
The SmartKey is in the ignition lock.
XRemove the SmartKey.

Obtain a New Key
The SmartKey needs to be replaced.
XVisit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
Seatbelts
ProblemPossible causes/consequences and
Solutions

After starting the
engine, the red seat
belt warning lamp lights
up for six seconds.
The seat belt warning lamp reminds the driver and frontpassenger
to fasten their seat belts.
XFastenyour seat belt (Ypage 50).

After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tone sounds
for up to six seconds.
The driver's seat belt is not fastened.
XFasten your seat belt (Ypage 50).
The warning tone ceases.
240Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences and
Solutions

The red seat belt
warning lamp lights up
after the engine starts,
as soon as the driver's
or the front-passenger
door is closed.
The driver or front passenger has not fastened their seat belt.
XFasten your seat belt (Ypage 50).
The warning lamp goes out.
There are objects on the front-passenger seat.
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out.

The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds.
The driver or front passenger has not fastened their seat belt. In
addition, you are driving faster than 15 mph (25 km/h)or you have
briefly driven faster than 15 mph (25 km/h).
XFasten your seat belt (Ypage 50).
The warning lamp goes out and the intermittentwarning tone
ceases.
There are objects on thefront-passengerseat. In addition, you are
driving faster than 15 mph (25 km/h) or you have briefly driven
faster than 15 mph (25 km/h).
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittentwarning tone
ceases.
Warning and indicator lamps in the instrument cluster241
On-board computer and displays
Z

Safety systems
ProblemPossible causes/consequences and
Solutions
(USA only)
(Canada only)
The red brake system
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 153).
XDo not add brake fluid. Adding more will not remedy the
malfunction.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.

The yellow ABS warning
lamp is lit while the
engine is running.
ABS (Anti-lock Braking System) is deactivated due to a
malfunction. Therefore, BAS (Brake Assist), COLLISION
PREVENTION ASSIST, COLLISION PREVENTION ASSIST PLUS,
ESP®(Electronic Stability Program), the HOLD function and hill
start assist, for example, are also deactivated.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic
transmission, will not be available.
242Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences and
Solutions

The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. BAS, COLLISION PREVENTION
ASSIST, COLLISION PREVENTION ASSIST PLUS, ESP®, EBD
(electronic brake force distribution), the HOLD function and hill
start assist, for example, are therefore also deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster243
On-board computer and displays
Z

ProblemPossible causes/consequences and
Solutions

The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
EBD is malfunctioning. Therefore, ABS, BAS, COLLISION
PREVENTION ASSIST, COLLISION PREVENTION ASSIST PLUS,
ESP®, the HOLD function and hill start assist, for example, are not
available either.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
(USA only)
(Canada only)

The red brake warning
lamp, the yellow ESP®
and ESP®OFF warning
lamps and the yellow
ABS warning lamp are
lit while the engine is
running.
ABS and ESP®are malfunctioning. Therefore, BAS, COLLISION
PREVENTION ASSIST, COLLISION PREVENTION ASSIST PLUS,
EBD, the HOLD function and hill start assist, for example, are not
available either.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
244Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences and
Solutions

The yellow ESP®
warning lamp flashes
while the vehicle is in
motion.
ESP®or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin.
Cruise control or DISTRONIC PLUS is deactivated.
XWhen pulling away, only depress the accelerator pedal as far as
necessary.
XEase off the accelerator pedal while the vehicle is in motion.
XAdapt your driving style to suit the road and weather conditions.
XDo not deactivate ESP®.
For exceptions, see: (Ypage 65).

The yellow ESP®OFF
warning lamp is lit while
the engine is running.
ESP®and ESP®trailer stabilization are deactivated. ESP®will not
stabilize the vehicle if it starts to skid or if a wheel starts to spin.
GWARNING
If ESP®is switched off, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XReactivate ESP®.
For exceptions, see: (Ypage 65).
XAdapt your driving style to suit the road and weather conditions.
If ESP®cannot be activated:
XHave ESP®checked at a qualified specialist workshop.

AMG vehicles only:
The yellow SPORT
handling mode warning
lamp is lit while the
engine is running.
SPORT handling mode is activated.
GWARNING
When SPORT handling mode is switched on, ESP®is unable to
stabilize the vehicle.
There is an increased risk of skidding and an accident.
XOnly switch on SPORT handling mode in certain situations
(Ypage 66).
Warning and indicator lamps in the instrument cluster245
On-board computer and displays
Z

ProblemPossible causes/consequences and
Solutions

The yellow ESP®and
ESP®OFF warning
lamps are lit while the
engine is running.
ESP®, BAS, COLLISION PREVENTION ASSIST, COLLISION
PREVENTION ASSIST PLUS, the HOLD function and hill start assist
are not available due to a malfunction.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.

The yellow ESP®and
ESP®OFF warning
lamps are lit while the
engine is running.
ESP®, BAS, the HOLD function and hill start assist are temporarily
unavailable.
COLLISION PREVENTION ASSIST/COLLISION PREVENTION
ASSIST PLUS may also have failed.
ATTENTION ASSIST is deactivated.
Self-diagnosis is not yet complete.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
246Warning and indicator lamps in the instrument cluster
On-board computer and displays