2014 MERCEDES-BENZ CLS lock

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

one or more tires has dropped suddenly
and the tires must be checked.
Observe the instructions and safety notes in
the display messages in the "Tires" section
(Ypage 258).
iIf the wheel positions on the vehicle are
rotated, the tire pressures may be
displayed for the wrong positions for a
short time. This is rectified afterafew
minutes of driving, and the tire pressures
are displayed for the correctpositions.
Restarting the tire pressuremonitor
When you restart the tire pressure monitor,
all existingwarning messages are deleted and
the warning lamps go out. The monitor uses
the currently set tire pressures as the
reference values for monitoring. In most
cases, the tire pressure monitor will
automatically detect the new reference
values after you have changed the tire
pressure. However, you can also define
reference values manually as described here.
The tire pressure monitor then monitors the
new tire pressure values.
XSet the tire pressure to the value
recommended for the corresponding
driving situation on the Tire and Loading
Information placard on the B-pillar on the
driver's side (Ypage 338).
Additional tire pressure values for different
loads can also be found on the tire pressure
table on the inside of the fuel filler flap
(Ypage 338).
XMake sure that the tire pressure is correct
on all four wheels.
XMake sure that the SmartKey is in position
2in the ignition lock.
XPress the\norbutton on the
steeringwheel to select theServ.menu.
XPress theorbutton to select
Tire Pressure.
XPress thebutton.
The multifunction display shows the
current tire pressure for each tire or the
Tire pressures will be displayed
after drivingafew minutes
message.
XPress thebutton.
The multifunction display shows theUse
CurrentPressuresasNewReference
Valuesmessage.
If you wish to confirm the restart:
XPress thebutton.
TheTire Press. Monitor Restarted
message appears in the multifunction
display.
After driving forafew minutes, the system
checkswhether the current tire pressures
are within the specified range. The new tire
pressures are then accepted as reference
values and monitored.
If you wish to cancel the restart:
XPress thebutton.
The tire pressure values stored at the last
restart will continue to be monitored.
Loading the vehicle
Instruction labels for tires and loads
GWARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair the
steering and driving characteristics and lead
to brake failure. There isarisk of accident.
Observe the load rating of the tires. The load
rating must be at least half of the GAWR of
your vehicle. Never overload the tires by
exceeding the maximum load.
Two instruction labels on your vehicle show
the maximum possible load.
(1) The Tire and Loading Information placard
is on the B-pillar on the driver's side. The
Tire and Loading Information placard
shows the maximum permissible number
of occupantsand the maximum
permissible vehicle load. It also contains
Loading the vehicle345
Wheels and tires
Z

to the tiresorchassiscomponents.
Components damagedinthiswaymayfail
unexpectedly.There isarisk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately.
Mountingawheel
Preparing the vehicle
XStop the vehicle on solid, non-slippery and
levelground.
XApply the parking brake.
XBring the front wheels into the straight-
ahead position.
XShift the transmission to positionP.
XVehicles with AIRMATIC:make sure that
"normal" levelisselected(Ypage 189).
XSwitch off theengine.
XVehicles without KEYLESS-GO:remove
theSmartKey from theignition lock.
XVehicles with KEYLESS-GO:open the
driver'sdoor.
The on-board electronics nowhave status
0.This is the same as the SmartKey having
been removed.
XVehicles with KEYLESS-GO:remove the
Start/Stop button from the ignition lock
(Ypage 147).
XIf included in the vehicle equipment,
remove the tire-change tool kit from the
vehicle (Ypage 320).
XSecure the vehicle to prevent it from rolling
away.
Securing the vehicle to prevent it from
rolling away
If your vehicle is equipped withawheel chock,
it can be found in the tire-change tool kit
(Ypage 320).
The folding wheel chock is an additional
safety measure to prevent the vehicle from
rolling away,for example when changing a
wheel.
XFold both plates upwards.
XFold out lower plate.
XGuidethe lugs on the lower plate fully into
the openings in base plate$.
Securing the vehicle on level ground
XOn level ground:place chocksorother
suitable items under the front and rear of
the wheel that is diagonallyopposite the
wheel you wish to change.
358Changingawheel
Wheels and tires

Securing the vehicle on slight downhillgradients
XOn light downhill gradients:place
chocks or othersuitableitemsinfront of
the wheelsofthe front and rearaxle.
Raisingthe vehicle
GWARNING
If youdonot positionthe jack correctly at the
appropriate jackingpoint of the vehicle, the
jack could tip over with the vehicle raised.
There isarisk of injury.
Only position the jack at the appropriate
jackingpoint of the vehicle. The base of the
jack must be positioned vertically, directly
under the jackingpoint of the vehicle.
!The jack is designed exclusively for
jackingupthe vehicle at the jackingpoints.
Otherwise, your vehicle could be damaged.
The following must be observed when raising
the vehicle:
Rto raise the vehicle, only use the vehicle-
specific jack that has been tested and
approved by Mercedes-Benz. If used
incorrectly, the jack could tip over with the
vehicle raised.
Rthe jack is designed only to raise and hold
the vehicle forashort time whileawheel
is being changed. It is not suited for
performing maintenancework under the
vehicle.
Ravoid changing the wheel on uphill and
downhill slopes.
Rbefore raising the vehicle, secure it from
rolling away by applying the parking brake
and insertingwheel chocks. Never
disengage the parking brake while the
vehicle is raised.
Rthe jack must be placed onafirm, flat and
non-slip surface. Onaloose surface, a
large, load-bearing underlay must be used.
Onaslippery surface,anon-slip underlay
must be used, e.g. rubber mats.
Rdo not use wooden blocks or similar
objectsasajack underlay.Otherwise, the
jackwill not be able to achieveits load-
bearingcapacity due to the restricted
height.
Rmakesure that the distancebetween the
underside of the tires and the grounddoes
not exceed 1.2in(3cm).
Rnever place your hands and feet under the
raised vehicle.
Rnever lie under the raised vehicle.
Rnever start the engine when the vehicle is
raised.
Rnever open or closeadoor or the trunk lid
when the vehicle is raised.
Rmakesure that no persons are present in
the vehicle when the vehicle is raised.
XUsinglug wrench,loosen the boltson
the wheel you wish to change by about one
full turn. Do not unscrew the bolts
completely.
Changingawheel359
Wheels and tires
Z

XPosition jack$at jacking point.
Example
XMake sure the foot of the jack is directly
beneath the jacking point.
XTurn crank!clockwise until jack$sits
completely on jacking pointand the
base of the jack lies evenly on the ground.
XTurn crank!until the tire is raised a
maximum of 1.2 in (3 cm) off the ground.
Removingawheel
!AMG vehicles:during removaland
repositioning of the wheel, the wheel rim
can strike the ceramic-brake disc and
damage it. Therefore, take precautions and
getasecond persontoassist you.
Alternatively, you can useasecond
alignment bolt.
!Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub
threads could otherwise be damaged when
you screw them in.
XUnscrew the uppermost wheel bolt
completely.
XScrew alignment boltinto the thread
instead of the wheel bolt.
XUnscrew the remaining wheel bolts fully.
XRemove the wheel.
Mountinganew wheel
GWARNING
Oiled or greased wheel boltsordamaged
wheel bolts/hub threads can cause thewheel
boltstocomeloose.Asaresult, you could
loseawheel while driving. There isarisk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contactaqualified
specialist workshop immediately.Have the
damagedwheel boltsorhub threads
replaced/renewed. Do notcontinue driving.
360Changingawheel
Wheels and tires

GWARNING
If you tighten the wheelbolts or wheelnuts
when the vehicleisraised, the jack couldtip
over. There isarisk of injury.
Only tighten the wheelbolts or wheelnuts
when the vehicleisonthe ground.
Always pay attention to the instructions and
safety notes in the "Changingawheel"
section (Ypage357).
Only use wheelbolts that have been designed
for the wheeland the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheelbolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
!AMG vehicle with ceramic brake
discs:during removaland repositioning of
the wheel, the wheelrim can strike the
ceramic-brake disc and damage it.
Therefore, take precautions and have a
second personassist you. Alternatively,
you can useasecond alignment bolt.
!To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
Positioningawheel (example: vehicle with anemergency spare wheel)
XCleanthe wheel and wheel hub contact
surfaces.
XSlide the wheel to be mounted onto the
alignment bolt and push it on.
XTighten the wheel bolts until they are
finger-tight.
XUnscrew the alignment bolt.
XTighten the last wheel bolt until it is finger-
tight.
XVehicles withacollapsible spare
wheel:inflate thecollapsible spare wheel
(Ypage 368).
Only then lower thevehicle.
Lowering thevehicle
GWARNING
The wheels could work loose if thewheel nuts
and boltsare not tightenedtothe specified
tightening torque. There isarisk of accident.
Have the tightening torque immediately
checked ataqualified specialist workshop
afterawheel is changed.
!Vehicles withacollapsible spare
wheel:before lowering thevehicle, inflate
thecollapsible spare wheel with thetire
inflationcompressor. The wheel rim could
otherwise be damaged.
Tighteningthe wheel nuts (example: vehicle withan emergencyspare wheel)
XTurn the crank of the jack counter-
clockwise until the vehicle is once again
standingfirmly on the ground.
XPlace the jack to one side.
XTighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated (to). The specified
tightening torque is96 lb-ft(130 Nm).
XTurn the jack back to its initial position.
Changingawheel361
Wheels and tires
Z

the systemmay still display thetire
pressure of theremovedwheel forafew
minutes. The value displayed for the
mountedemergencysparewheel is notthe
same as the current tire pressure of the
emergency spare wheel.
"Minispare" emergency sparewheel/
collapsible sparewheel
Removing the "Minispare" emergency
sparewheel
The emergency spare wheel can be found in
the stowage well under the trunk floor.
XLift the trunk floor upwards (Ypage 283).
XTurn stowage traycounter-clockwise
and remove together with vehicle tool kit
tray.
XRemove "Minispare" emergency spare
wheel$.
Removing the collapsible sparewheel
(AMG vehicles)
The emergency spare wheel can be found in
the stowage wellunderthe trunk floor.
XLift the trunk floor upwards (Ypage 283).
XReach into cutoutin the tool holder and
lift it up.
XRemove collapsiblespare wheel.
Always observe the instructions and safety
notes in the "Mountingawheel" section
(Ypage 358).
Stowingaused collapsible spare
wheel
!Only place the collapsible spare wheel in
the vehicle when it is dry. Otherwise,
moisture may get into the vehicle.
Take the following steps to stowaused
collapsible spare wheel. It will not otherwise
install into the spare wheel well. Mercedes-
Benz recommends that you have this work
performed ataqualified specialist workshop,
e.g. at an authorized Mercedes-Benz Center.
XUnscrew the valve cap from the valve.
XUse the back of the valve cap to unscrew
the valve insert from the valve and release
the air.
iFully deflating the tires can takeafew
minutes.
XScrew the valve insert back into the valve.
XScrew the valve cap back on.
XRemove the protective sheet from the
vehicle tool kit and pull it over the
collapsible spare wheel.
XStow the collapsible spare wheel in the
emergency spare wheel well under the
trunk.
Inflating the collapsible sparewheel
!Inflate the collapsible spare wheel using
the tire inflation compressor before
lowering the vehicle. The wheel rim could
otherwise be damaged.
368Emergency sparewheel
Wheels and tires

!Do not operate the tire inflation
compressor for longer than eight minutes
atatime withoutabreak. It may otherwise
overheat.
The tire inflation compressor can be
operated againonce it hascooleddown.
XMount the collapsiblespare wheelas
described (Ypage 357).
The collapsible spare wheel must be
mounted before it is inflated.
XPull connector!and the air hose out of
the housing.
XRemove the cap from the valve on the
collapsible spare wheel.
XScrew union nuton the air hose ontothe
valve.
XMake sure on/off switchof the tire
inflation compressor is set to0.
XInsert connector!intothe cigarette
lighter socket or intoa12Vsocket in your
vehicle.
Observe the notes on the cigarettelighter
(Ypage 288). Observe the notes on
sockets(Ypage 289).
XTurn the SmartKey to position1in the
ignition lock (Ypage 147).
XPress on/offswitchon thetireinflation
compressor toI.
The tireinflationcompressor is switched
on. The tire is inflated. The tire pressure is
shown on pressure gauge$.
XInflate the tire to the specified tire
pressure.
The specified tire pressure is printed on the
yellow label of the emergencyspare wheel.
XWhen the specified tire pressure has been
reached, press on/offswitchon the
electric air pump to0.
The tireinflationcompressor is switched
off.
XTurn the SmartKey to position0in the
ignition lock.
XIf the tire pressure is higher than the
specified pressure, press pressure release
buttonuntil the correcttire pressure has
been reached.
XUnscrew union nuton the air hose from
the valve.
XScrew the valve cap ontothe collapsible
spare wheel valve again.
XStow plug!and the air hose in the lower
section of the blower housing.
XStow the tire inflation compressor in the
vehicle.
Emergency sparewheel369
Wheels and tires
Z