MERCEDES-BENZ CLS 2014 Owners Manual

Display messagesPossible causes/consequences andSolutions
Check
Tires
The tire pressureinoneor moretires has dropped significantly.
The wheelposition is displayed in themultifunction display.
Awarning tone also sounds.
GWARNING
Withtirepressureswhichare toolow, there isariskofthe
following hazards:
Rthey may burst, especiallyasthe 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 isarisk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditionsasyou do so.
XSecure the vehicle against rolling away (Ypage 167).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 321).
XCheck the tire pressure (Ypage 342).
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 withaflat tire, there isarisk of the following hazards:
Raflat tire affects the ability to steer or brake the vehicle.
Ryou could lose control of the vehicle.
Rcontinued driving withaflat tire will cause excessive heat build-
up and possiblyafire.
There isarisk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditionsasyou do so.
XSecure the vehicle against rolling away (Ypage 167).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 321).
Display messages259
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions
TirePress.Monitor
Currently
Unavailable
Due toasource of radiointerference,nosignals can be received
from the wheelsensors.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 ataqualified
specialist workshop.
Tire Pressure
Monitor
Inoperative No
Wheel Sensors
The wheels mounted do not haveasuitable 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
forafew minutes.
TirePress.Monitor
Inoperative
The tire pressure monitor is faulty.
XVisitaqualified specialist workshop.
Vehicle
Display messagesPossible causes/consequencesandSolutions
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.
XVisitaqualified specialist workshop.
Apply Brake
to Shift from 'P'
You have attempted to move the transmission selector lever to
positionD,RorNwithout depressing the brake pedal.
XDepress the brake pedal.
Risk of Rolling
Away
Vehicle Not in 'P'
The driver's door is open and the transmission is in positionR,N
orD.
Awarning tone also sounds.
XShift thetransmission to positionP.
XSecure thevehicle against rolling away (Ypage 167).
260Display messages
On-boar dc omputer and displays

Display messagesPossible causes/consequences andSolutions
ServiceRequired
DoNotShiftGears
Visit Dealer
You cannotchange the transmission position due toamalfunction.
Awarning tone also sounds.
If transmission positionDis selected:
XDrive toaqualified specialist workshopwithout shiftingthe
transmission from positionD.
If transmission positionR,NorPis selected:
XNotifyaqualified specialist workshoporbreakdown service.
OnlyShift to 'P'
whenVehicleis
Stationary
The vehicle is moving.
XPull overand stop the vehiclesafelyassoonaspossible,paying
attention to road and traffic conditions.
XShift the transmission to positionP.
the trunk lid is open.
XClose the trunk lid.
The hood is open.Awarning tone also sounds.
GWARNING
The open hood may blockyour view when the vehicle is in motion.
There isarisk of an accident.
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).
XClose the hood.
At least one door is open.Awarning tone also sounds.
XClose all thedoors.


RearLeftBackrest
Not Latchedor
RearRight
Backrest Not
Latched
The backrestinthe rear is not engaged on the left-hand and/or
right-hand side.Awarning tone also sounds.
XPush thebackrestback until it engages.


LockSeatBackrest
Front LeftorLock
SeatBackrest
Front Right
The driver'sorfront passenger'sseat backrestisnot engaged. A
warning tonealso sounds.
XPush the backrest back until it engages.
Display messages261
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions

Power Steering
Malfunction See
Operator'sManual
The powersteering is malfunctioning.
Awarning tone also sounds.
GWARNING
You will need to use moreforce to steer.
Thereisariskofanaccident.
XCheck whetheryou are able to apply the extraforce required.
XIf you are able to steer safely:carefully drive on toaqualified
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.
XAdd washer fluid (Ypage 309).
SmartKey
Display messagesPossible causes/consequences andSolutions

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

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

ObtainaNew Key
The SmartKey needs to be replaced.
XVisitaqualified specialist workshop.

ReplaceKeyBattery
The batteries of the KEYLESS-GO key are discharged.
XChange the batteries (Ypage 79).
262Display messages
On-board computer and displays

Display messagesPossible causes/consequences andSolutions

Don't Forget Your
Key
The display message is shown foramaximum of 60 seconds and
is onlyareminder.
You have opened the driver'sdoor with the engine switched off.
The KEYLESS-GO key is not in the ignitionlock.
XRemember to take the KEYLESS-GO key with you when you
leave the vehicle.

Key Not Detected
(red display message)
The KEYLESS-GO key is not in the vehicle.
Awarning tone also sounds.
If theengineisswitched off,you can no longer lockthe vehicle
centrally or start the engine.
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).
XLocate the KEYLESS-GO key.
The KEYLESS-GO key is not detected while the engine is running
because there is interference fromastrongsource of radio waves.
Awarning tone also sounds.
XPull overand stop the vehiclesafelyassoonaspossible,paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away(Ypage 167).
XOperate the vehicle with the SmartKey in the ignition lock.

Key Not Detected
(white display
message)
The KEYLESS-GO key cannot be detected at present.
XChange the location of the SmartKey with the KEYLESS-GO
functionsinthe vehicle.
If the KEYLESS-GO key is still not detected:
XOperate the vehicle with the SmartKey in the ignition lock.

Key Detected in
Vehicle
The KEYLESS-GO key has been detected inside the vehicle during
locking.
XRemove the KEYLESS-GO key from the vehicle.
Display messages263
On-board computer and displays
Z

Display messagesPossible causes/consequences andSolutions

Remove 'Start'
Button and Insert
Key
The KEYLESS-GO keycan continuouslynotbe detected.
KEYLESS-GO is temporarily malfunctioningorisdefective. A
warningtonealso sounds.
XInserttheSmartKey into theignition lockand turnittothe
desiredposition.
XVisitaqualified specialist workshop.

Close Doors to
LockVehicle
At leastone door is open.Awarning tone also sounds.
XClose all doorsand lockthe vehicle again.
Indicator and warning lamps in the
instrument cluster
Warning and indicator lamps
overview
Low-beam headlamps
(Ypage 118)
Parking lamps (Ypage 118)
High-beam headlamps
(Ypage 119)

Turn signal (Ypage 119)
Seat belts (Ypage 265)
(USA) Brakes (Ypage 266)

(Canada)Brakes (Ypage266)
ABS (Ypage267)
ESP®(Ypage269)
ESP®OFF (Ypage269)
SPORT handling mode in
AMG vehicles (Ypage270)
SRS (Ypage272)
\nCheck Engine (Ypage273)
Reserve fuel (Ypage273)
Coolant (Ypage273)
Distance warning signal
(Ypage275)
Tire pressure monitor
(Ypage276)
264Indicator and warninglamps in the instrument cluster
On-board computer and displays

Safety
Seat belts
ProblemPossible causes/consequences andSolutions

After startingthe
engine, the red seat
belt warning lamp lights
up for6seconds.
The seat belt warning lamp reminds the driver and frontpassenger
to fasten their seat belts.
XFastenyour seat belt (Ypage 56).

After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tonesounds
for up to six seconds.
The driver's seat belt is not fastened.
XFasten your seat belt (Ypage 56).
The warning toneceases.

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 56).
The warning lamp goes out.
There are objectsonthe front-passenger seat.
XRemove the objectsfrom the front-passenger seat and stow
them inasecure 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. You
are driving faster than 15 mph (25 km/h) or have briefly driven
faster than 15 mph (25 km/h).
XFasten your seat belt (Ypage 56).
The warning lamp goes out and the intermittentwarning tone
ceases.
Thereare objectsonthefront-passenger seat.You are driving
faster than 15 mph (25 km/h) or have briefly driven faster than
15 mph (25 km/h).
XRemove the objectsfrom the front-passenger seat and stow
them inasecure place.
The warning lamp goes out and the intermittentwarning tone
ceases.
Indicator and warning lamps in theinstrumentcluster265
On-boar dc omputer and displays
Z

Safety systems
ProblemPossible causes/consequences andSolutions
(USA only)

(Canada only)
The red brake system
warning lamp comes on
while the engine is
running.Awarning tone
also sounds.
GWARNING
The brake boosting effect is malfunctioning and the braking
characteristics may be affected.
There isarisk 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 167).
XConsultaqualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
(USA only)

(Canada only)
The red brake system
warning lamp comes on
while the engine is
running.Awarning tone
also sounds.
There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There isarisk 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 167).
XDo not add brake fluid. Adding more will not remedy the
malfunction.
XConsultaqualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
266Indicator and warning lampsinthe instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andSolutions

The yellowABS warning
lamp is lit while the
engine is running.
ABS (Anti-lock Braking System) is deactivated due to a
malfunction.BAS (Brake Assist), BAS PLUS, ESP®(Electronic
Stability Program), PRE-SAFE®,PRE-SAFE®Brake, the HOLD
function and hill start assist are therefore also deactivated, for
example.
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.
XVisitaqualified specialist workshop.
If the ABS control unit is faulty, there is alsoapossibility that other
systems, such as the navigation system or the automatic
transmission, will not be available.
Indicator and warning lampsinthe instrument cluster267
On-board computer and displays
Z

ProblemPossible causes/consequences andSolutions

The yellowABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. BAS,BAS PLUS, ESP®,EBD
(electronic brake force distribution), PRE-SAFE®,
PRE-SAFE®Brake, the HOLD function, hill start assist are therefore
also deactivated, for example.
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 isarisk of an accident.
XCarefullydrive onasuitable stretch of road, making slight
steering movementsataspeed 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.
XVisitaqualified specialist workshop.
268Indicator and warning lampsinthe instrument cluster
On-board computer and displays