2014 MERCEDES-BENZ CLS sensor

Ryou adoptaverysporty driving style
(cornering at high speeds or driving with
high rates of acceleration).
Ryou are driving withaheavy load(in the
vehicleoronthe roof).
Restarting the tire pressure loss
warningsystem
Restart the tire pressure loss warning system
if you have:
Rchanged the tire pressure
Rchanged the wheels or tires
Rmounted new wheels or tires
XBefore restarting, make sure that the tire
pressures are set properly on all four tires
for the respective operating conditions.
The recommendedtire pressures can be
found on the Tire and Loading Information
placard on the B-pillar on the driver's side
or the tire pressure table on the fuel filler
flap.The tire pressure loss warning system
can only give reliablewarnings if you have
set the correct tire pressure. If an incorrect
tire pressure is set, these incorrectvalues
will be monitored.
XAlsoobservethenotesinthesectionontire
pressures (Ypage 338).
XMake sure that the SmartKey is in position
2in the ignition lock (Ypage 147).
XPress the\norbutton on the
steeringwheel to selecttheServ.menu.
XPress theorbutton on the
steering wheel to select theTire
Pressuremenu.
XPress thebutton.
TheRun Flat Indicator Active
Press 'OK' to Restartmessage
appears in the multifunction display.
If you wish to confirm the restart:
XPress thebutton.
TheTire Pressure Now OK?message
appears in the multifunction display.
XPress theorbutton to select
Yes.
XPress thebutton.
TheRun Flat Indicator Restarted
message appears in the multifunction
display.
Afterateach-in period, the tire pressure
loss warning system will monitor the set
tire pressures of all four tires.
If you wish to cancel the restart:
XPress thebutton.
or
XWhen theTire Pressure Now OK?
message appears, press the
orbutton to selectCancel.
XPress thebutton.
The tire pressure values stored at the last
restart will continue to be monitored.
Tire pressuremonitor
General notes
Ifatire pressure monitor is installed, the
vehicle's wheels have sensors that monitor
the tire pressures in all four tires. The tire
pressure monitor warns you if the pressure
drops in one or more of the tires. The tire
pressure monitor only functions if the correct
sensors are installed on all wheels.
Information on tire pressures is displayed in
the multifunction display. Afterafew minutes
of driving, the current tire pressure of each
tire is shown in theServicemenu of the
multifunction display. For further information
on displaying this message, refer to the
"Checking the tire pressure electronically"
section (Ypage 344).
342Check
Wheels and tires

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

XStow the jack and the restofthe vehicle
toolsinthe trunk again.
XCheck the tire pressure of the newly
mounted wheel and adjustitifnecessary.
Observe the recommended tire pressure
(Ypage 338).
iVehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors.
Wheel and tirecombinations
General notes
!For safety reasons, Mercedes-Benz
recommends that you only use tires and
wheels which have been approved by
Mercedes-Benz specifically for your
vehicle.
These tires have been specially adapted for
use with the control systems, such as ABS
or ESP®,and are marked as follows:
RMO=Mercedes-BenzOriginal
RMOE=Mercedes-BenzOriginal Extended
(tires featuring run-flat characteristics)
RMO1=Mercedes-Benz Original (only
certain AMG tires)
Mercedes-BenzOriginal Extended tires
may only be usedonwheels that have been
specifically approved by Mercedes-Benz.
Only use tires, wheels or accessories
tested and approved by Mercedes-Benz.
Certain characteristics, e.g. handling,
vehiclenoise emissions or fuel
consumption, may otherwise be adversely
affected. In addition, when driving with a
load, tire dimension variations couldcause
the tires to come into contact with the
bodywork and axle components. This could
result in damage to the tires or the vehicle.
Mercedes-Benz accepts no liability for
damage resulting from the use of tires,
wheels or accessories other than those
tested and approved.
Information on tires, wheels and approved
combinations can be obtained from any
qualified specialist workshop.
Overviewofabbreviations usedinthe
following tire tables:
RBA: both axles
RFA: front axle
RRA: rear axle
The recommended pressures for various
operating conditionscan be found:
Ron the Tire and Loading Information placard
with the recommended tire pressures on
the B-pillar on the driver's side
Rin the tire pressure table on the inside of
the fuel filler flap
Observe the notes on recommended tire
pressures under various operating conditions
(Ypage 338).
Check tire pressures regularly,and only when
the tires are cold. Comply with the
maintenancerecommendations of the tire
manufacturer in the vehicle document wallet.
Notes on the vehicle equipment–always
equip the vehicle with:
Rtires of the same size onagiven axle (left/
right)
Rthe same type of tires atagiven time
(summer tires, winter tires, MOExtended
tires)
Vehicles with MOExtendedtires are not
equipped withaTIREFIT kit at the factory. It
is therefore recommendedthat you
additionally equip your vehicle withaTIREFIT
kit if you mounttires that do not feature run-
flat properties,e.g. winter tires.ATIREFIT kit
may be obtained fromaqualified specialist
workshop.
iNot all wheeland tire combinations are
available at the factory for all countries.
iOn the following pages, you can find
information on approved wheelrims and
tiresizesfor equipping your vehicle with
winter tires. Winter tires are not available
362Wheel and tirecombinations
Wheels and tires

Windshield washersystemand
headlamp cleaning system
Important safety notes
GWARNING
Windshieldwasher concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust systemit
could ignite. There isariskoffire and injury.
Make sure that no windshield washer
concentrate is spilled nexttothe filler neck.
!Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps.
!Do not add distilled or de-ionized water to
the washer fluid container. Otherwise, the
level sensor may be damaged.
!Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Comply with the importantsafetynotesfor
serviceproductswhen handlingwasher fluid
(Ypage 373).
At temperatures abovefreezing:
XFill thewasherfluid reservoir withamixture
of water and windshield washer fluid, e.g.
MB SummerFit.
Add1part MB SummerFit to 100 partswater.
At temperatures below freezing:
XFill thewasherfluid reservoir withamixture
of water and washer fluid, e.g. MB
WinterFit.
Adapt the mixing ratio to the outside
temperature.
RDown to 14‡("10 †): mix1part MB
WinterFit to2partswater.
RDown to"4‡("20 †): mix1part MB
WinterFit to1part water.
RDown to"20.2‡("29 †): mix2partsMB
WinterFit to1part water.
iAdd windshield washer fluid, e.g. MB
SummerFit or MB WinterFit, to the washer
fluid all year round.
Climate control system refrigerant
Important safety notes
Typeofrefrigerant
The climate control system of your vehicle is
The instruction label regarding the refrigerant
type used can be foundonthe radiator cross
member.
Refrigerant R-134a
!Only the refrigerantR-134a and the PAG
oil approved by Mercedes-Benzmay be
used. The approved PAGoil may notbe
mixed with any other PAG oil that is not
approved for R-134a refrigerant.
Otherwise, the climate control system may
be damaged.
Service work, such as topping-uprefrigerant
or replacing components, may only be carried
out byaqualified specialist workshop.All
applicable regulations must be adhered to,
SAEstandard J639 included.
Always have work on the climate control
system carried out ataqualified specialist
workshop.
378Service products and filling capacities
Technica ld ata
filled with refrigerantsR-134a.