2014 MERCEDES-BENZ CLS Owners Manual

Calibratingthecompass
XMakesure that there is sufficient spacefor
you to driveinacircle without impeding
traffic.
In order to calibratethecompasscorrectly,
do thefollowing:
Rcalibratethecompassintheopen and not
in thevicinity of steel structures or high-
voltage transmission lines.
Rswitch off electrical consumerssuchasthe
climate control, windshield wipersorrear
window defroster.
Rclose all doorsand thetrunk lid.
XSwitch on theignition.
XPress and hold button$(Ypage 302) for
approximately six seconds until the
Csymbol appearsincompassdisplay
(Ypage 302).
XDrive inafull circle at approximately
3mph (5 km/h)to6mph (10 km/h).
When thecalibration has successfully been
completed, thecurrentdirection is shown
in compass display(Ypage 302).
Floormats
GWARNING
Objectsinthe driver's footwell can restrictthe
pedal travel or obstructadepressed pedal.
The operatingand road safety of the vehicle
is jeopardized. There isarisk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficientclearancefor the pedals. Do not use
loose floormats.
XSlide the seat backwards.
XTo install:place the floormat in the
footwell.
XPress studsontoretainers.
XTo remove:pull the floormat off
retainers.
XRemove the floormat.
Features303
Stowage and features
Z

304

Useful information............................306
Engine compartment........................306
Maintenance......................................309
Care....................................................311
305
Maintenance and care

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please notethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related systemsand functions.
iRead the information on qualified
specialist workshops: (Ypage 26).
Engine compartment
Hood
Important safetynotes
GWARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There isarisk of an accident.
Never unlatchthe hood while driving.
GWARNING
When openingand closingthe hood, it may
suddenly fall intothe closed position.There is
arisk of injury to persons within range of
movement of the hood.
Open and close the hood only when no one is
within its range of movement.
GWARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
posesarisk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following.
GWARNING
Opening the hood when the engine is
overheated or when there isafire in the
engine compartmentcould expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there isafire in the
engine compartment, keep the hood closed
and contact the fire department.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
isarisk of injury.
If you need to do any work inside the engine
compartment,
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rkeep clothingaway from moving parts
GWARNING
The ignition system and the fuel injection
system work under high voltage. If you touch
components which are under voltage, you
could get an electric shock. There isarisk of
injury.
Never touch components of the ignition
system or fuel injection system when the
ignition is switched on.
Opening the hood
GWARNING
When the hood is open and the windshield
wipers are set in motion,you can be injured
by the wiper linkage. There isarisk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
306Engine compartment
Maintenance and care

!Make sure that the windshieldwipers are
not folded away fromthe windshield. You
could otherwise damage the windshield
wipers or the hood.
XMake sure that the windshield wipers are
turned off.
XPull release leveron the hood.
The hood is released.
XReach into the gap, pull hood catch
handleup and lift the hood.
If you lift the hood by approximately
15 inches(40cm),the hood is opened and
held open automatically by the gas-filled
strut.
Closing thehood
XLower the hood and let it fall fromaheight
of approximately8inches(20 cm).
XCheck that the hood has engaged properly.
If the hood can be raised slightly,itisnot
properly engaged. Open it again and close
it withalittle more force.
Engine oil
General notes
Depending on the driving style, the vehicle
consumesupto0.9 US qt (0.8 liters) of oil
overadistanceof600 miles(1,000 km). The
oil consumption may be higher than this when
the vehicle is new or if you frequently drive at
high enginespeeds.
Depending on the engine, the oil dipstickmay
be inadifferent location.
When checking theoil level:
Rpark thevehicle onalevelsurface.
Rtheengineshould be switched off for
approximately fiveminutesiftheengineis
at normal operatingtemperature.
Rif theengineisnotat normal operating
temperature, e.g.ifthe engine was only
started briefly, wait about 30 minutes
before carrying out the measurement.
Checking the oil level using the oil
dipstick
XPull oil dipstickout of the dipstick guide
tube.
XWipe off oil dipstick.
XSlowly slide oil dipstickinto the guide
tube to the stop, and take it out again.
If the level is between MIN mark$and
MAX mark,the oil level is correct.
XIf the oil level has dropped to MIN mark
$or below, add 1.1 US qt (1.0 liter) of
engine oil.
Engine compartment307
Maintenance and care
Z

Adding engineoil
GWARNING
If engineoil comes intocontactwithhot
componentsintheenginecompartment, it
may ignite. There isariskoffireand injury.
Makesurethatengineoil is notspilled next
to the filler neck. Let the enginecool down
and thoroughly clean the engineoil off the
componentsbefore starting the engine.
HEnvironmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
!Only use engineoils and oil filtersthat
have been approved for vehicles with a
servicesystem. You can obtainalist of the
engineoils and oil filterstested and
approved in accordance with the
Mercedes-Benz Specificationsfor Service
Productsatany Mercedes-Benz Service
center.
Damage to the engineorexhaust system is
caused by the following:
Rusing engineoils and oil filtersthat have
not been specifically approved for the
servicesystem
Rreplacing engineoil and oil filtersafter
the interval for replacementspecified by
the servicesystem has been exceeded
Rusing engineoil additives.
!Do not add too much oil. adding too much
engineoil can result in damage to the
engineortothe catalytic converter. Have
excess engineoil siphoned off.
Example: engineoil capXTurn capcounter-clockwise and remove
it.
XAdd engineoil.
If the oil level is at or below the MIN mark
on the oil dipstick, add 1.1 US qt(1.0 liter)
of engine oil.
XReplace capon the fillerneck and turn
clockwise.
Ensurethatthe cap locks into place
securely.
XCheck the oillevel againwith the oil
dipstick (Ypage 307).
Further information on engine oil
(Ypage 375).
Additionalservice products
Checking coolant level
GWARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scaldedbyhot
coolantspraying out. There isarisk of injury.
Let the enginecool down before openingthe
cap. Wear eye and hand protection when
openingthe cap. Open the cap slowly half a
turn to allow pressure to escape.
308Engine compartment
Maintenance and care

XPark the vehicle onalevel surface.
Only check the coolant level when the
vehicle is onalevel surface and the engine
has cooled down.
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Ypage 147).
XCheck the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158‡(70 †).
XTurn the SmartKey to position
0(Ypage 147) in the ignition lock.
XSlowly turn caphalfaturn counter-
clockwise to allow excess pressure to
escape.
XTurn capfurther counter-clockwise and
remove it.
If the coolant is at the level of marker bar
$in the filler neck when cold, there is
enough coolant in coolant expansion
tank.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar$in the fuel
filler neck when warm, there is enough
coolant in expansion tank.
XIf necessary, add coolant that has been
tested and approved by Mercedes-Benz.
XReplace capand turn it clockwise as far
as it will go.
For further information on coolant,see
(Ypage 377).
Adding washer fluid to the windshield
washer system/headlampcleaning
system
GWARNING
Windshield washer concentrate is highly
flammable. If it comes intocontactwith hot
enginecomponentsorthe exhaust systemit
could ignite. There isariskoffire and injury.
Make sure that no windshield washer
concentrate is spilled nexttothe filler neck.
XTo open:pull capupwards by the tab.
XAdd the premixed washer fluid.
XTo close:press capontothe filler neck
until it engages.
The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
If the washer fluid level drops below the
recommended minimum of1liter,amessage
appears in the multifunction display
promptingyou to refill the washer fluid
(Ypage 262).
Further information on windshield washer
fluid/antifreeze (Ypage 378).
Maintenance
ASSYST PLUS
Service messages
The ASSYSTPLUS service interval display
informsyou of the nextservice due date.
Maintenance309
Maintenance and care
Z

Information on the type of service and service
intervals (see the separate Maintenance
Booklet).
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
iThe ASSYST PLUS service interval display
does not show any information on the
engine oil level.Observe the notes on the
engineoil level (Ypage 307).
The multifunction display showsaservice
message for several seconds, e.g.:
RServiceAin..Days
RServiceADue
RServiceAExceeded by .. Days
Depending on the operatingconditionsofthe
vehicle, the remainingtime or distance until
the nextservice due date is displayed.
The letterAorB,possibly in connection with
anumber or another letter, shows the type of
service.Astands foraminor serviceandBfor
amajor service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS serviceinterval display
does not take intoaccountany periods of
time during which the battery is
disconnected.
Maintaining the time-dependent service
schedule:
XNote down the serviceduedate displayed
in the multifunctiondisplay before
disconnecting the battery.
or
XAfter reconnecting the battery, subtract
the battery disconnection periods fromthe
service date shown on the display.
Hidingaservice message
XPresstheorbutton on the
steeringwheel.
Displaying service messages
XSwitch on theignition.
XPressthe\norbutton on the
steeringwheel to selecttheServ.menu.
XPress theorbutton to select the
ASSYST PLUSsubmenu and confirm by
pressing thebutton.
The service due date appears in the
multifunction display.
Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval
displayhas been inadvertently reset, this
settingcan be corrected ataqualified
specialist workshop.
Have service work carried out as described
in the MaintenanceBooklet. This may
otherwise lead to increased wear and
damage to the major assemblies or the
vehicle.
Aqualified specialist workshop, e.g. an
authorizedMercedes-BenzCenter, will reset
the ASSYST PLUS serviceinterval display
after the servicework has been carried out.
You can also obtain further information on
maintenancework, for example.
Special service requirements
The specified maintenanceinterval takes only
the normal operation of the vehicle into
account. Under arduous operatingconditions
or increased load on the vehicle,
maintenancework must be carried out more
frequently, for example:
Rregular city driving with frequent
intermediate stops
Rif the vehicle is primarily used to travel
short distances
Ruse in mountainous terrain or on poor road
surfaces
Rif the engineisoften left idling for long
periods
310Maintenance
Maintenance and care