2014 MERCEDES-BENZ CLS radio

Display messagesPossible causes/consequences andSolutions

Check Brake Pad
Wear
The brakepads/liningshavereached their wear limit.
XVisitaqualified specialist workshop.

mbrace Inoperative
Oneormoremain features of thembrace system are
malfunctioning.
XHavethembrace system checkedimmediately ataqualified
specialist workshop.
PRE-SAFE
Inoperative See
Operator'sManual
ImportantfunctionsofPRE-SAFE®have failed.All other occupant
safetysystems, e.g. air bags, remain available.
XVisitaqualified specialist workshop immediately.
PRE-SAFE
Functions
CurrentlyLimited
See Operator's
Manual
PRE-SAFE®Brake is temporarily inoperative.
Possible causes are:
Rfunction is impaired due to heavy rain or snow.
Rthe sensors in the radiator grill and the bumper are dirty.
Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio
stationsorother sources of electromagnetic radiation.
RAMG vehicles: ESP®is deactivated.
Rthe system is outside the operating temperature range.
Rthe on-board voltage is too low.
When the causes stated above no longer apply, the display
message disappears.
PRE-SAFE®Brake 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 rollingaway (Ypage 167).
XClean the sensors in the radiator grill and the bumper
(Ypage 315).
XRestartthe engine.
XAMG vehicles: reactivate ESP®(Ypage 70).
PRE-SAFE
Functions Limited
See Operator's
Manual
PRE-SAFE®Brake is inoperative due toamalfunction. BAS PLUS
or the distance warning signal may also have failed.
XVisitaqualified specialist workshop.
Display messages241
On-board computer and displays
Z

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

Display messagesPossible causes/consequences andSolutions
DISTRONIC PLUS
Currently
Unavailable See
Operator'sManual
DISTRONIC PLUSistemporarily inoperative.
Possible causes are:
Rfunction is impaired due to heavy rain or snow.
Rthe sensors in the radiator grill and the bumper 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 thecauses statedabovenolonger apply, thedisplay
message disappears.
DISTRONICisoperational again.
If thedisplay 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 rollingaway (Ypage 167).
XClean the sensors in the radiator grill and the bumper
(Ypage 315).
XRestartthe engine.
DISTRONIC PLUS
Inoperative
DISTRONIC PLUS is defective.
The following may have also failed:
RBAS PLUS (Brake Assist System PLUS)
RPRE-SAFE®Brake
Awarning tone also sounds.
XVisitaqualified specialist workshop.
DISTRONIC PLUS
Suspended
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 conditionsfor DISTRONIC PLUS
(Ypage 177).
256Display messages
On-boar dc omputer and displays

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

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

XPress and hold one of buttonsto!on
the integrated garage door opener.
Afterashort time, indicator lamplights
up yellow.
iIndicator lamplights up yellow as soon
as button,$or!is programmed for
the first time. If the selected button has
already been programmed, indicator
lampwill only light up yellow after ten
seconds have elapsed.
XRelease button,$or!.Indicator
lampflashes yellow.
XPoint garage door remotecontrol
towards buttonsto!on the rear-view
mirror atadistanceof2to8inches (5 to
20 cm).
iThe required distancebetween remote
controland the integrated garage door
opener depends on the garage door drive
system. Several attempts might be
necessary. You should test every position
for at least 25 seconds before trying
another position.
XPress and hold button%on remotecontrol
until indicator lamplights up green.
If indicator lamplights up green or
flashes, then programming has been
successful.
XRelease button%on remote controlfor
the garage door drive system.
XIf indicator lamplights up red: repeat
the programming procedure for the
corresponding button on the rear-view
mirror. When doing so, vary the distance
between remote controland the rear-
view mirror.
iIf the indicator lamp flashes green after
successful programming, the garage door
system is usingarolling code. After
programming, you must synchronize the
garage door opener integrated in the rear-
view mirror with the receiver of the garage
door system.
Synchronizing the rolling code
Observe the "Important safety notes"
(Ypage 299).
Your vehicle must be within reach of the
garage door or exterior gate drive. Make sure
that neither your vehicle nor any persons/
objectsare present within the sweep of the
door or gate.
XTurn the SmartKey to position2in the
ignition lock.
XPress the program button of the door or
gate drive (see the door or gate drive
operating instructions, e.g. under
"programming of additional remote
controls").
iUsually,you now have 30seconds to
initiate the next step.
XPress previously programmed button,
$or!of the integrated garage door
opener until the door closes.
The rolling code synchronization is then
complete.
Notes on programming the remote
control
Canadianradio frequency laws require a
"break"(or interruption)ofthetransmission
signals after broadcastingforafew seconds.
Therefore, these signals may notlast long
enough for theintegratedgaragedoor
opener. The signal is notrecognized during
programming. Comparable with Canadian
law, some U.S.garage door openers also
featurea"break".
Proceedasfollows:
Rif you live in Canada
Rif you have difficulties programmingthe
garagedoor opener (regardless of where
you live)when usingtheprogramming
steps
300Features
Stowage and features

ROnly jump-start from batteries witha12Vvoltage rating.
ROnly use jumper cables which haveasufficient cross-section and insulated terminal clamps.
RIf the battery is fully discharged, leave the battery that is being used to jump-start connected
forafew minutes before attempting to start. This charges the battery slightly.
RMake sure that the two vehicles do not touch.
Make sure that:
Rthe jumper cables are not damaged.
Rwhen the jumper cables are connected to the battery, uninsulated sections of the terminal
clamp do not come into contact with other metal sections.
Rthe jumper cables cannot come into contact with parts which can move when the engine
is running, such as the V-belt pulley or the fan.
XApply the parking brake firmly.
XShift the transmission to positionP.
XSwitch off all electrical consumers (e.g. radio, blower, etc.).
XOpen the hood.
Position number%identifies the charged battery of the other vehicle or an equivalent jump-
starting device.
XSlide coverof positive terminalin the direction of the arrow.
XConnect positive terminalon your vehicle to positive terminal$of donor battery%
using the jumper cable, always begin with positive terminalon your own vehicle first.
XStart the engine of the donor vehicle and run it at idling speed.
XConnect negative terminal!of donor battery%to ground pointof your vehicle using
the jumper cable, connecting the jumper cable to battery of other vehicle%first.
XStart the engine.
XBefore disconnecting the jumper cables, let the engine run for several minutes.
Jump-starting327
Breakdown assistance
Z

The tire pressure monitor hasayellow
warning lamp in the instrument cluster for
indicatingapressure loss or malfunction.
Whether the warning lamp flashes or lights up
indicates whetheratire pressure is too low or
the tire pressure monitor is malfunctioning:
Rif the warning lamp is lit continuously, the
tire pressure on one or more tires is
significantly too low. The tire pressure
monitor is not malfunctioning.
Rif the warning lamp flashes for around a
minute and then remains lit constantly, the
tire pressure monitor is malfunctioning.
If the tire pressure monitor is malfunctioning,
it may take more than ten minutes for the tire
pressure warning lamp to inform you of the
malfunction by flashing for approximately one
minute and then remaining lit. When the
malfunction has been rectified, the tire
pressure warning lamp goes out afterafew
minutes of driving.
The tire pressure values indicated by the on-
board computer may differ from those
measured atagas station withapressure
gauge. The tire pressures shown by the on-
board computer refer to those measured at
sea level. At high altitudes, the tire pressure
values indicated byapressure gauge are
higher than those shown by the on-board
computer.Inthis case, do not reduce the tire
pressures.
The operation of the tire pressure monitor can
be affected by interference from radio
transmitting equipment (e.g. radio
headphones, two-way radios) that may be
being operated in or near the vehicle.
Checking the tire pressure
electronically
XMake sure that the SmartKey is in position
2(Ypage 147) in the ignition lock .
XPress the\norbutton on the
steering wheel to select theServ.menu.
XPress theorbutton to select
Tire Pressure.
XPress thebutton.
The current tire pressure of each tire is
shown in the multifunction display.
If the vehicle was parked for longer than
20 minutes,theTirepressureswillbe
displayed after drivingafew
minutesmessage is shown.
Afterateach-in process, the tire pressure
monitor automatically detects new wheels or
new sensors. As long asaclear allocation of
the tire pressure value to the individual
wheels is not possible, theTire Pressure
Monitor Activedisplaymessage is shown
instead of the tire pressure display. The tire
pressures are already being monitored.
iIf an emergency spare wheel is mounted,
the system may continue to show the tire
pressure of the wheel that has been
removed forafew minutes. If this occurs,
note that the value displayed for the
position where the spare wheel is mounted
is not the same as the current tire pressure
of the emergency spare wheel.
Tire pressuremonitor warning
messages
If the tire pressure monitor detectsapressure
loss in one or more tires,awarning message
is shown in the multifunction displayand the
yellow tire pressure monitor warning lamp
comes on.
RIf theCorrect Tire Pressuremessage
appears in the multifunction display, the
tire pressure in at least one tire is too low
and must be corrected at the next
opportunity.
RIf theCheck Tire Pressuremessage
appears in the multifunction display, the
tire pressure in one or more tires has
dropped significantly and the tires must be
checked.
RIf theTire Malfunctionappears in the
multifunction display, the tire pressure in
344Check
Wheels and tires