light MERCEDES-BENZ CLS 2014 Owners Manual

Safety systems
Display messagesPossible causes/consequences andSolutions

Currently
Unavailable See
Operator's Manual
ABS (Anti-lock Braking System), ESP®(Electronic Stability
Program), BAS (Brake Assist), PRE-SAFE®,the HOLD function and
hill start assist are temporarily unavailable.
BAS PLUS and PRE-SAFE®Brake may also have failed.
In addition, the, andwarning lamps light up in
the instrumentcluster.
ATTENTIONASSIST is deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
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.
XCarefully driveasuitable distance, making slight steering
movements, ataspeed above 12 mph (20 km/h).
If the displaymessage disappears, the functions mentioned
above are available again.
If the displaymessage continues to be displayed:
XDrive on carefully.
XVisitaqualified specialist workshop.

Inoperative See
Operator's Manual
ABS,ESP®,BAS,PRE-SAFE®,the HOLD function and hill start
assist are unavailable due toamalfunction.
The(USA only)/
(Canada only),, and
warning lamps in the instrumentcluster also light up.
ATTENTION ASSISTisdeactivated.
GWARNING
The brakesystem continues to function normally, but without the
functionslisted above. The wheels could therefore lock if you
brakehard, for example.
238Display messages
On-board computer and displays

Display messagesPossible causes/consequences andSolutions
The steerabilityand brakingcharacteristics may be severely
affected. The brakingdistanceinanemergencybrakingsituation
can increase.
If ESP®is notoperational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skiddingand an accident.
XDriveoncarefully.
XVisitaqualified specialist workshop immediately.

Inoperative See
Operator's Manual
ESP®,BAS, PRE-SAFE®,the HOLD functionand hill start assist are
unavailable duetoamalfunction.
In addition, theand warning lamps light up in the
instrument cluster.
The self-diagnosisfunctionmight not be complete,for example.
ATTENTION ASSISTisdeactivated.
GWARNING
The brakesystem continues to function normally, but without the
functionslisted above.
The braking distanceinanemergency 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 driveasuitable distance, making slight steering
movements,ataspeed above 12 mph (20 km/h).
If the display message disappears,the functionsmentioned
above are available again.
If the display message continues to be displayed:
XDrive on carefully.
XVisitaqualified specialist workshop.
Display messages239
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions


Inoperative See
Operator'sManual
EBD(electronic brakeforcedistribution), ABS, ESP®,BAS,PRE-
SAFE®,theHOLD function and hill start assist are unavailable due
toamalfunction.
BASPLUSand PRE-SAFE®Brake may also havefailed.
In addition,the, andwarninglampslightupin
the instrument cluster andawarning tonesounds.
GWARNING
The brake system continues to function normally, but without the
functionslisted above. The frontand rearwheels 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.
XDrive on carefully.
XVisitaqualified specialist workshop immediately.
(USA
only)
(Canada
only)
Release Parking
Brake
You are driving with the parking brake applied.Awarning tone also
sounds.
XRelease theparking brake.
(USA
only)
(Canada
only)
Check Brake Fluid
Level
Thereisnot enough brake fluid in the brake fluid reservoir.
In addition, the(USA only)/
(Canada only) warning
lamp lights up in the instrument cluster andawarning tone
sounds.
GWARNING
The braking effect maybeimpaired.
There isariskofanaccident.
XPull overand stop the vehiclesafelyassoonaspossible,paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away(Ypage 167).
XConsultaqualified specialist workshop.
XDo not add brake fluid. This does not correct the malfunction.
240Display messages
On-board computer and displays

Display messagesPossible causes/consequences andSolutions

SRS Malfunction
ServiceRequired
There isamalfunction in theSRS (Supplemental Restraint
System). Thewarninglamp also lights up in theinstrument
cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in theevent of an accident, may not
be triggered.
There is an increasedriskofinjury.
XVisitaqualified specialist workshop.
For further information about SRS, see (Ypage 41).

Front Left
Malfunction
ServiceRequired
orFront Right
Malfunction
ServiceRequired
SRS has malfunctioned at the frontonthe left or right.The
warning lamp also lights up in the instrument cluster.
GWARNING
The air bags or EmergencyTensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisitaqualified specialist workshop.

Rear Left
Malfunction
ServiceRequired
orRear Right
Malfunction
ServiceRequired
GWARNING
The air bags or EmergencyTensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
SRS has malfunctioned at the rear on the left or right.The
warning lamp also lights up in the instrument cluster.
XVisitaqualified specialist workshop.

Left Side Curtain
AirbagMalfunction
ServiceRequired
orRight Side
CurtainAirbag
malfunction
ServiceRequired
There isamalfunction in the left-hand or right-handwindow
curtain air bag.
Thewarning lamp also lights up in the instrument cluster.
GWARNING
The left or right window curtain air bag may either be triggered
unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XVisitaqualified specialist workshop.
242Display messages
On-boar dc omputer and displays

Display messagesPossible causes/consequences andSolutions
Front Passenger
Airbag Disabled
See Operator's
Manual
The front-passenger air bag and front-passenger knee bag are
deactivated during thejourney, although:
Ran adult
or
Raperson larger thanacertainsizeisoccupyingthefront-
passenger seat
If additional forces are applied to theseat,thesystem may
interpret theoccupant's weight as lowerthan it actually is.
GWARNING
The front-passenger front air bag and front passenger knee bag
may not be triggered in the event of an accident.
There is an increased risk of injury.
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 167).
XSwitch the ignition off.
XHave the occupant get out of the vehicle.
XKeep the seat unoccupied, close the front-passenger door and
switch on the ignition.
XObserve the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction displayand check the
following:
Seat unoccupied and ignition switched on:
Rthe PASSENGER AIR BAG OFF indicator lamp must light up and
remain lit. If the indicator lamp is on, OCS has disabled the front-
passenger air bag and front-passenger knee bag (Ypage 47).
RtheFront Passenger Airbag Enabled See Operator's
ManualorFront Passenger Airbag Disabled See
Operator's Manualdisplaymessages must not be shown in
the multifunction display.
XWait foraperiod of at least 60 seconds until the necessary
system checkshave been completed.
XMake sure that the displaymessages do not appearinthe
multifunction display.
If these conditionsare fulfilled,the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditionsare not fulfilled,the system is not operating
correctly.
Display messages243
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions
XVisitaqualified specialist workshop immediately.
Forfurther information about theOccupantClassification System,
see (Ypage 47).
FrontPassenger
Airbag Enabled
See Operator's
Manual
The front-passenger air bag and front-passenger knee bag are
enabled duringthe journey, even though:
Rachild,asmall adult or an object weighingless than the
system's weight threshold is located on the front-passenger
seat
or
Rthe front-passenger seat is unoccupied
The system may detect objectsorforces applying additional
weight on the seat.
GWARNING
The front-passenger front air bag and front passenger knee bag
may be triggeredunintentionally.
There is an increased risk of injury.
XPull over and stop the vehicle safely as soon as possible,paying
attention to road and traffic conditions.
XSecure the vehicle against rollingaway (Ypage 167).
XSwitch the ignition off.
XOpen the front-passenger door.
XRemove the child and the child restraint system fromthe front-
passenger seat.
XMake sure that there are no objectsonthe seat adding to the
weight.
The system may otherwise detect the additional weight and
interpret the seat occupant's weight as greater than it actually
is.
XKeep the seat unoccupied, close the front-passenger door and
switch on the ignition.
XObserve the PASSENGER AIR BAG OFF indicator lamp in the
center console and the multifunction displayand check the
following:
Seat unoccupied and ignition switched on:
Rthe PASSENGER AIR BAG OFF indicator lamp must light up and
remain lit. If the indicator lamp is on, OCS (Occupant
Classification System) has disabled the front-passenger air bag
and front-passenger knee bag (Ypage 47).
RtheFront Passenger Airbag Enabled See Operator's
ManualorFront Passenger Airbag Disabled See
244Display messages
On-board computer and displays

Display messagesPossible causes/consequences andSolutions
Operator'sManualdisplay messagesmustnot be shown in
the multifunction display.
XWait foraperiod of at least 60 seconds until the necessary
system checkshave been completed.
XMake sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the PASSENGER AIR BAG OFF indicator
lamp remains lit or goes out depends on how OCS classifies the
occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
XVisitaqualified specialist workshop immediately.
For further information about the Occupant Classification System,
see (Ypage 47).
Lights
iDisplay messages about LEDs:
This display message will only appear if all LEDshave failed.
Display messagesPossible causes/consequences andSolutions

Check Left
Cornering Lightor
Check Right
Cornering Light
The left or right-hand cornering light is defective.
XVisitaqualified specialist workshop.

Check Left Low
BeamorCheck
Right Low Beam
The left or right-hand low-beam headlamp is defective.
XVisitaqualified specialist workshop.

Check Rear Left
Turn Signalor
Check Rear Right
Turn Signal
The rear left-hand or rear right-hand turn signal is defective.
XVisitaqualified specialist workshop.
Display messages245
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions

Check Front Left
SidemarkerLampor
Check Front Right
SidemarkerLamp
The leftorright frontside markerlamp is defective.
XVisitaqualified specialist workshop.

Check RearLeft
SidemarkerLampor
Check RearRight
SidemarkerLamp
The rear leftorright side marker lamp is defective.
XVisitaqualified specialist workshop.

CheckLeftDaytime
Running Lightor
CheckRight
Daytime Running
Light
The left-handorright-handdaytime running lamp is faulty.
XVisitaqualified specialist workshop.

Active Light
System Inoperative
The active light function is defective.
XVisitaqualified specialist workshop.

Malfunction See
Operator's Manual
The exterior lighting is defective.
XVisitaqualified specialist workshop.

AutoLampFunction
Inoperative
The light sensor is defective.
XVisitaqualified specialist workshop.

Switch Off Lights
The lightsare still switched on when you leave the vehicle. A
warningtonealso sounds.
XTurn the light switchto\r.
Display messages247
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions

VehicleRising
Your vehicleisadjustingtothelevel you haveselected.

VehicleRising
Please Wait
The vehiclelevel is toolow when thevehicleisstationary. A
warningtonealso sounds.
XDo notpull away.
The vehiclelevelisset when thedisplay message disappears.

StopVehicle
VehicleToo Low
You have pulled away while thevehiclelevelisstill toolow.
AIRMATIC setsthevehicletotheselected levelafterashort
period.
XPull overand stop the vehiclesafelyassoonaspossible,paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away(Ypage 167).
XWait until the displaymessage disappears before pulling away.
AIRMATIC is defective.Awarning tone also sounds.
XDo notdriveatspeeds above50mph (80 km/h).
XMakeonlyslightsteering movements. Otherwise, the front
fender or the tires could be damagedifthe steering movement
is too large.
XListenfor scraping sounds.
XPull over and stop the vehicle safely, paying attention to road
and traffic conditions, and selectahigher vehicle level.
Depending on the malfunction, it may be possible to raise the
vehicle.
XVisitaqualified specialist workshop.

Malfunction
The AIRMATICfunction is restricted. The vehicle's handling
characteristics may be affected.
XDo not drive at speeds above 50 mph (80 km/h).
XVisitaqualified specialist workshop.

Off
The HOLD function is deactivated. The vehicle is skidding.
Awarning tone also sounds.
XReactivatetheHOLD function later(Ypage 186).
Radar Sensors
Deactivated See
Operator'sManual
The radar sensor system is deactivated.
XSwitch on theradar sensor system (Ypage 232).
252Display messages
On-boar dc omputer and displays

Display messagesPossible causes/consequences andSolutions
Blind SpotAssist
Currently
Unavailable See
Operator'sManual
orActive Blind
SpotAssist
Currently
Unavailable See
Operator'sManual
Blind Spot AssistorActiveBlind Spot Assististemporarily
inoperative. Possiblecauses are:
Rthesensorsare dirty.
Rfunction is impaireddue to heavyrain or snow.
Rtheradarsensor system is outside the operatingtemperature
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 or Active 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 167).
XClean the sensors(Ypage 315).
XRestart the engine.
Blind Spot Assist
Inoperativeor
Active Blind Spot
Assist Inoperative
Blind Spot Assist or Active Blind Spot Assist is defective.
The yellowindicator lamps also light up in the exterior
mirrors.
XVisitaqualified specialist workshop.
Park Assist
Canceled
The driver's door is open and the driver's seat belt has not been
fastened.
XRepeat the parkingprocess 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 ParkingAssist again later (Ypage 196).
254Display messages
On-boar dc omputer and displays