warning MERCEDES-BENZ CLA 2014 Owners Manual

Display messagesPossible causes/consequences and
Solutions
SpeedLimitAssist
Inoperative
Speed Limit Assistis faulty.
XVisit a qualified specialist workshop.

Off
The HOLD function is deactivated. The vehicle is skidding.
Awarning tone also sounds.
XReactivate the HOLD function later (Ypage 172).
The HOLD function is deactivated. When the brakepedal is firmly
depressed, an activation condition is not fulfilled.
Awarning tone also sounds.
XCheck the activation conditions for the HOLD function
(Ypage 172).
Radar Sensors
Deactivated See
Operator's Manual
The radar sensor system is deactivated.
XSwitch on the radar sensor system (Ypage 208).
Lane Keeping
Assist Currently
Unavailable See
Operator's Manual
Lane Keeping Assist is deactivated and temporarily inoperative.
Possible causes are:
Rthe windshield in the camera's field of vision is dirty.
Rvisibility is impaired due to heavy rain, snow or fog.
Rthere are no lane markings for a longer period.
Rthe lane markings are worn, dark or covered, e.g.by dirtorsnow.
Whenthe causes stated above no longer apply, the display
message disappears.
Lane Keeping Assist is operational again.
If the display message does not disappear:
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).
XCleanthe windshield.
Lane Keeping
Assist Inoperative
Lane Keeping Assist is faulty.
XVisit a qualified specialist workshop.
230Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
Park Assist
Inoperative
You have just carried out a large number of turning or parking
maneuvers.
Active Parking Assistwill become available again after
approximately ten minutes (Ypage 178).
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSwitch off and restart the engine.
If the display message continues to be displayed:
XVisit a qualified specialist workshop.
PARKTRONIC is defective.
XVisit a qualified specialist workshop.
DISTRONIC PLUS OffDISTRONIC PLUS has been deactivated (Ypage 164). If it was
deactivated automatically, a warning tone also sounds.
DISTRONICPLUSNow
Available
DISTRONIC PLUS is operational again after having been
temporarily unavailable. You can now reactivate DISTRONIC PLUS
(Ypage 164).
DISTRONIC PLUS
Currently
Unavailable See
Operator's Manual
DISTRONIC PLUS is temporarily inoperative. Possible causes are:
Rfunction is impaired due to heavy rain or snow.
Rthe sensors in the radiator trim are dirty
Rthe 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.
Rthe system is outside the operating temperature range.
Rthe on-board voltage is too low.
Awarning tone also sounds.
When the causes stated above no longer apply, the display
message disappears.
DISTRONIC is operational again.
If the display message does notdisappear:
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).
XClean the sensors in the radiator trim (Ypage 289).
XRestartthe engine.
232Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
DISTRONIC PLUS
Inoperative
DISTRONIC PLUS is defective. Adaptive Brake Assist may also
have failed.
Awarning tone also sounds.
XVisitaqualified specialist workshop.
DISTRONIC PLUS
Passive
You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
XRemove your foot from the accelerator pedal.
DISTRONIC PLUS
- - - mph
An activation condition for DISTRONIC PLUS is not fulfilled.
XCheck the activation conditions for DISTRONIC PLUS
(Ypage 166).
Cruise Control
Inoperative
Cruise control is defective.
Awarning tone also sounds.
XVisitaqualified specialist workshop.
Cruise Control
- - - mph
Acondition for activating cruise control has not been fulfilled.
You have tried to storeaspeed below 20 mph (30 km/h), for
example.
XIf conditions permit, drive faster than 20 mph (30 km/h) and
store the speed.
XCheck the activation conditions for cruise control
(Ypage 163).
Display messages233
On-board computer and displays
Z

Tires
Display messagesPossible causes/consequences and
Solutions
Check
Tire Pressure Soon
Canada only:
The tire pressure loss warningsystem has detected a significant
loss in pressure.
Awarning tone also sounds.
GWARNING
With tire pressures which are too low, there is a riskofthe
following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 153).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 295).
XCheck the tire pressures and, if necessary, correct the tire
pressure.
XRestart the tire pressure loss warning system when the tire
pressure is correct (Ypage 319).
CheckTirePressure
Then Restart Run
Flat Indicator
Canada only:
The tire pressure loss warning system generated a display
message and has not been restarted since.
XSet the correct tire pressure in all four tires.
XRestart the tire pressure loss warning system (Ypage 319).
RunFlatIndicator
Inoperative
Canada only:
The tire pressure loss warning system is faulty.
XVisit a qualified specialist workshop.
Correct Tire
Pressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
XCheck the tire pressures at the next opportunity (Ypage 320).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypage 322).
234Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
Check TiresThe tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
Awarning tone also sounds.
GWARNING
With tire pressures which are too low, there is a riskofthe
following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 153).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 295).
XCheck the tire pressure (Ypage 320).
XIf necessary, correct the tire pressure.
Warning Tire
Malfunction
The tire pressure in one or more tires has dropped suddenly. The
wheel position is shown in the multifunction display.
GWARNING
If you drive with a flat tire, there is a risk of the following hazards:
Ra flat tire affects the ability to steer or brake the vehicle.
RYou could lose control of the vehicle.
Rcontinued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 153).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 295).
Display messages235
On-board computer and displays
Z

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
\rThe hood is open.
GWARNING
The open hood may blockyour view when the vehicle is in motion.
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.
XApply the electric parking brake.
XClose the hood.
At least one door is open.Awarning tone also sounds.
XClose all the doors.


Power Steering
Malfunction See
Operator's Manual
The power steering is malfunctioning.
Awarning tone also sounds.
GWARNING
You will need to use more force to steer.
There is a riskofanaccident.
XCheck whetheryou are able to apply the extra force required.
XIf you are able to steer safely:carefully drive on to a qualified
specialist workshop.
XIf you are unable to steer safely:do not drive on. Contact the
nearest qualified specialist workshop.
Phone No ServiceYour vehicle is outside the network provider's transmitter/
receiver range.
XWait until the mobile phone operational readiness symbol
appears in the multifunction display.

Check Washer Fluid
The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
iIf you do not mix antifreeze with the washer fluid in the winter
months, then the washer fluid could freeze in the washer fluid
reservoir. In this case, theCheck Washer Fluiddisplay
message may appear in the multifunction display.
XAdd washer fluid (Ypage 283).
Display messages239
On-board computer and displays
Z

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