2014 MERCEDES-BENZ CLA ESP

Display messagesPossible causes/consequences and
Solutions

Check Rear Left
Sidemarker Lampor
Check Rear Right
Sidemarker Lamp
The rear leftorright side marker lamp is defective.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.

CheckLeftDaytime
Running Lightor
Check Right
Daytime Running
Light
The left-hand or right-hand daytime running lamp is faulty.
XCheck whether you are permitted to replace the bulb yourself
(Ypage 111).
or
XVisit a qualified specialist workshop.

Active Light
System Inoperative
The active light function is defective.
XVisit a qualified specialist workshop.

Malfunction See
Operator's Manual
The exterior lighting is defective.
XVisit a qualified specialist workshop.

AutoLampFunction
Inoperative
The light sensor is defective.
XVisit a qualified specialist workshop.

Switch Off Lights
The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
XTurn the light switch to.
Adaptive Highbeam
Assist Inoperative
Adaptive Highbeam Assist is faulty.
XVisit a qualified specialist workshop.
Adaptive Highbeam
Assist Currently
Unavailable See
Operator's Manual
Adaptive Highbeam 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.
XClean the windshield.
If the system detects that the camera is fully operational again,
theAdaptive Highbeam Assist Now Availablemessage is
displayed.
Adaptive Highbeam Assist is operational again.
226Display messages
On-board computer and displays

Engine
Display messagesPossible causes/consequences and
Solutions

Check Coolant See
Operator's Manual
The coolant level is too low.
!Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
XAdd coolant, observing the warning notes before doing so
(Ypage 283).
XIf coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop.
\rThe fan motor is faulty.
XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearestqualified specialist workshop.
XAvoid subjecting the engineto heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
\r
Coolant Too Hot
Stop Vehicle Turn
Engine Off
The coolant is too hot.
Awarning tone also sounds.
GWARNING
Do notdrive when yourengine is overheated. Thiscan cause some
fluids which may have leaked into the engine compartmentto
catch fire.
Steamfrom the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 153).
XWaituntil the engine has cooled down.
XMake sure thatthe air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XDo not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
XPay attention to the coolant temperature display.
XIf the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †).
Display messages227
On-board computer and displays
Z

Display messagesPossible causes/consequences and
Solutions
The battery is notbeing charged.
Awarning tone also sounds.
Possible causes are:
Ra defective alternator
Ra torn poly-V-belt
Ra malfunction in the electronics
XPull overand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XOpenthe hood.
XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
!Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is not damaged:
XVisit a qualified specialist workshop immediately.

Check Engine Oil
At Next Refueling
The engine oil level has dropped to the minimum level.
Awarning tone also sounds.
XCheckthe oil level when next refueling, at the latest
(Ypage 281).
XIf necessary, add engine oil (Ypage 282).
XHave the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
!Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com (USA only).


Fuel Level Low
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
228Display messages
On-board computer and displays

Display messagesPossible causes/consequences and
Solutions
There is only a very small amount of fuel in thefuel tank.
XRefuel at the nearestgas stationwithout fail.


Gas Cap Loose
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
XClose the fuel filler cap.
If the fuel filler cap is correctly closed:
XVisit a qualified specialist workshop.
Driving systems
DisplaymessagesPossible causes/consequences and
Solutions

Attention Assist
Drowsiness
Detected
Based on certain criteria, ATTENTION ASSIST has detected fatigue
oralack of concentration on thepart of thedriver. A warning tone
also sounds.
XIf necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest.

Attention Assist
Inoperative
ATTENTION ASSIST is inoperative.
XVisitaqualified specialist workshop.
Speed Limit Assist
Currently
Unavailable See
Operator's Manual
Speed Limit 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.
XClean the windshield.
If the system detects that the camera is fully operational, the
display message disappears.
Speed Limit Assist is operational again.
SpeedLimitAssist:
Unavailable In
This Country
Speed Limit Assist is only available in certain countries.
XDrive on.
Speed Limit Assist is available again as soon as you drive into a
country in which its use is approved.
Display messages229
On-board computer and displays
Z

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
Blind Spot Assist
Currently
Unavailable See
Operator's Manual
Blind Spot Assistis temporarily inoperative. Possible causes are:
Rthe sensors are dirty.
Rfunction is impaired due to heavy rain or snow.
Rthe radar sensor system is outside the operating temperature
range.
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.
The yellowindicator lamps also light up in the exterior
mirrors.
When the causes stated above no longer apply, the display
message disappears.
Blind Spot 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 sensors (Ypage 289).
XRestart the engine.
Blind Spot Assist
Inoperative
Blind Spot Assist is defective.
The yellowindicator lamps also light up in the exterior
mirrors.
XVisit a qualified specialist workshop.
Park Assist
Canceled
The driver's door is open and the driver's seat belt has not been
fastened.
XRepeatthe parking process with the seat belt fastened and the
driver's door closed.
You have inadvertently touched the multifunction steering wheel
while steering intervention was active.
XWhile steering intervention is active, make sure that the
multifunction steering wheel is not touched unintentionally.
The vehicle has started to skid and ESP®has intervened.
XUse Active Parking Assist again later (Ypage 178).
Display messages231
On-board computer and displays
Z

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