2014 MERCEDES-BENZ CLS-Class engine

Adding engin
eoil G
WARNING
If engin eoil comes int ocontac twithh ot
component sintheengin ecom partment, it
may ignite. There is ariskoff irea nd injury.
Mak esuret hate ngineo il is no tspilled next
to the filler neck. Let the engin ecool down
and thoroughly clean the engin eoil off the
component sbefore starting the engine. H
Environmental 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 engin eoils and oil filter sthat
have been approved for vehicles with a
servic esystem. You can obtain alist of the
engin eoils and oil filter stested and
approved in accordance with the
Mercedes-Benz Specification sfor Service
Product satany Mercedes-Benz Service
center.
Damage to the engin eorexhaust system is
caused by the following:
R using engin eoils and oil filter sthat have
not been specifically approved for the
servic esystem
R replacing engin eoil and oil filter safter
the interval for replacemen tspecified by
the servic esystem has been exceeded
R using engin eoil additives.
! Do not add too much oil. adding too much
engin eoil can result in damage to the
engin eortot he catalytic converter. Have
excess engin eoil siphoned off. Example: engin
eoil cap
X Turn cap 001Acounter-clockwise and remove
it.
X Add engin eoil.
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.
X Replace cap 001Aon the fille rneck and turn
clockwise.
Ensur ethatthe cap locks into place
securely.
X Check the oi llev el agai nwith the oil
dipstick (Y page 307).
Further information on engine oil
(Y page 375). Additiona
lservice products
Checking coolant level G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalde dbyhot
coolan tspraying out. There is arisk of injury.
Let the engin ecool down before openin gthe
cap. Wear eye and hand protection when
openin gthe cap. Open the cap slowly half a
turn to allow pressure to escape. 308
Engine compartmentMaintenance and care

X
Park the vehicle on alevel surface.
Only check the coolant level when the
vehicle is on alevel surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 147).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 147).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡(70 †).
X Turn the SmartKey to position
0(Y page 147) in the ignition lock.
X Slowly turn cap 001Ahalf aturn counter-
clockwise to allow excess pressure to
escape.
X Turn cap 001Afurther counter-clockwise and
remove it.
If the coolant is at the level of marker bar
0024 in the filler neck when cold, there is
enough coolant in coolant expansion
tank 0010.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar 0024in the fuel
filler neck when warm, there is enough
coolant in expansion tank 0010.
X If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X Replace cap 001Aand turn it clockwise as far
as it will go.
For further information on coolant ,see
(Y page 377). Adding washer fluid to the windshield
washer system/headlam
pcleaning
system G
WARNING
Windshield washer concentrate is highly
flammable. If it comes int ocontac twith hot
engin ecomponent sorthe exhaust syste mit
could ignite. There is ariskoff ire and injury.
Make sure that no windshield washer
concentrate is spilled nex ttothe filler neck. X
To open: pull cap001Aupwards by the tab.
X Add the premixed washer fluid.
X To close: press cap 001Aontothe 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 of 1liter ,am essage
appears in the multifunction display
promptin gyou to refill the washer fluid
(Y page 262).
Further information on windshield washer
fluid/antifreeze (Y page 378). Maintenance
ASSYST PLUS
Service messages The ASSYS
TPLUS service interval display
inform syou of the nex tservice due date. Maintenance
309Maintenance 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).
i The ASSYST PLUS service interval display
does not show any information on the
engine oil level.O bserve the notes on the
engin eoil level (Y page 307).
The multifunction display shows aservice
message for several seconds, e.g.:
R Servic eAin..D ays R
Servic eADue R
Servic eAExceeded by .. Days Depending on the operatin
gcondition softhe
vehicle, the remainin gtime or distance until
the nex tservice due date is displayed.
The letter A or
B ,p
ossibly in connection with
an umber or another letter, shows the type of
service. A stands for
aminor servic eand B for
am ajor service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS servic einterval display
does not take intoa ccountany periods of
time during which the battery is
disconnected.
Maintaining the time-dependent service
schedule:
X Note down the servic eduedate displayed
in the multifunctio ndisplay before
disconnecting the battery.
or
X After reconnecting the battery, subtract
the battery disconnection periods fro mthe
service date shown on the display.
Hiding aservice message X
Pres sthe 000C or0002 button on the
steerin gwheel. Displaying service messages X
Switch on th eignition.
X Pres sthe 000A or0004 button on the
steerin gwheel to selec tthe Serv. menu.
X Press the 0006or0005 button to select the
ASSYST PLUS submenu and confirm by
pressing the 000Cbutton.
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
displayh as been inadvertently reset, this
settingc an be corrected at aqualified
specialist workshop.
Have service work carried out as described
in the MaintenanceB ooklet. This may
otherwise lead to increased wear and
damage to the major assemblies or the
vehicle.
Aq ualified specialist workshop, e.g. an
authorize dMercedes-Ben zCenter, will reset
the ASSYST PLUS servic einterval display
after the servic ework has been carried out.
You can also obtain further information on
maintenanc ework, for example.
Special service requirements
The specified maintenanc einterval takes only
the normal operation of the vehicle into
account. Under arduous operatin gconditions
or increased load on the vehicle,
maintenanc ework must be carried out more
frequently, for example:
R regular city driving with frequent
intermediate stops
R if the vehicle is primarily used to travel
short distances
R use in mountainous terrain or on poor road
surfaces
R if the engin eisoften left idling for long
periods 310
MaintenanceMaintenance and care

Under these or similarc
onditions, have, for
example, the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must
be checked more often.F urther information
can be obtained at aqualified specialist
workshop, e.g. an authorized Mercedes-Benz
Center.
Driving abroad
An extensive Mercedes-Benz Servic enetwork
is also available in other countries. You can
obtain further information from any
authorized Mercedes-Benz Center. Care
General notes
H
Environmental note
Dispose of empty packagin gand cleaning
cloth sinane nvironmentally responsible
manner.
! For cleanin gyour vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleanin gagents
R solvents
R cleanin gagents containin gsolvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. aring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
! Do not park the vehicle for an extended
period straight after cleanin git, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for afew minutes after
cleaning. Braking heats the brake discs and
the brake pads/linings, thus drying them.
The vehicle can then be parked. Regular care of your vehicle is
acondition for
retaining the quality in the long term.
Use care product sand cleanin gagents
recommended and approved by Mercedes-
Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after washing
the vehicle. There is arisk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full brakin gpower is restored.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes
automatically in certain situations. To
preven tdamage to th evehicle ,deactivate
DISTRONI CPLUS and the HOLD function in
the following or other similar situations:
R when towing the vehicle
R in the car wash
! Never clean yourv ehicle inaTouchless
Automatic Car Wash as these use special
cleanin gagents .These cleaning agents can
damage the paintwork or plastic parts.
! Make sure that:
R the side windows and the sliding sunroof
are fully closed.
R the ventilation/heating is switched off
(the OFF button has been pressed).
R the windshield wiper switch is in position
0.
Otherwise, the vehicle might be damaged.
! In car washes with atowing mechanism,
make sure that the automatic transmission
is in transmission position N,otherwise the
vehicle could be damaged.
R Vehicles with aSmartKey: Care
311Maintenance and care Z

Do not remove the SmartKe
yfromt he
ignition lock. Do not open the driver's
door or front-passenge rdoor when the
engine is switched off. Otherwise, the
automatic transmission selects park
position Pautomatically and locks the
wheels. You can prevent this by shifting
the automatic transmission to N
beforehand.
R Vehicles with KEYLESS-GO:
Do not open the driver's door or front-
passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position P
automatically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position N:
X Make sure the vehicle is stationary and the
ignition is switched off.
X Turn the SmartKey to position 2in the
ignition lock (Y page 147).
Use the SmartKey instead of the Start/
Stop button on vehicles with KEYLESS-GO.
X Depress and hold the brake pedal.
X Shift the automatic transmission to
position N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the
SmartKey in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windshield and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the
windshield.
Washing by hand In some countries, washing by hand is only
allowe
datspecially equipped washing bays. Observe the legal requirements in all
countries concerned.
X
Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use asoft sponge to clean.
X Use amild cleaning agent, such as acar
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlet.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with achamois.
X Do not let the cleaning agent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers G
WARNING
The water jet from acircular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components.
Component sdamaged in this way may fail
unexpectedly. There is arisk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately.
! Always maintain adistance of at least
11.8in( 30 cm) between the vehicl eand the
powe rwasher nozzle. Information about
th ec orrec tdistanc eisavailabl efromt he
equipmen tmanufacturer.
Mov ethe power washe rnozzle around
when cleaning your vehicle.
Do not aim directly at any of the following:
R tires
R door gaps, roof gaps, joints, etc.
R electrical components 312
CareMaintenance and care

001E
Alignment bolt
0025 Sheet for faulty wheel
0009 Tire inflation compressor
0016 Lugw rench
001D Fusealloc ation chart
X Ope nthe trunk lid.
X Lift the trunk floor upwards (Y page 283).Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
properties) (Y page 321)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
R an emergency spare wheel(Y page 367)
Information on changing/mounting awheel
(Y page 357).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 167).
X If possible, bring the front wheels into the
straight-ahead position.
X Vehicles with AIRMATIC: make sure that
"normal" level is selected (Y page 189).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronicsn ow have status
0.T his is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 147). X
All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while awheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditionsw hen doing so.
X Close the driver's door. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is
atotal loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognizeM OExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-
bearing capacity and the speed index
(Y page 351).
MOExtended tires may only be used in
conjunction with an active tire pressure loss
warning system or with an active tire pressure
monitor.
If the pressurel oss warning message
appearsint he multifunction display:
R Observe the instructions in the display
messages (Y page 258).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden. Flat tire
321Breakdown assistance

Befor
ehandling the battery ,touch the vehicle
bod ytor emove any existing electrostatic
build-up.
The highly flammable ga smixture forms when
charging the battery as well as whe njump-
starting.
Always mak esure that neither you no rthe
battery is electrostatically charged. Abuild-
up of electrostati ccharge can be caused, for
example:
R by wearing clothing made from synthetic
fibers
R due to friction between clothing and seats
R if you push or pull the battery across the
carpet or other synthetic materials
R if you wipe the battery with acloth G
WARNING
During the charging process, abattery
produces hydrogen gas. If ashort circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is arisk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objectsort ools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
R Never connect or disconnectt he battery
terminals while the engine is running. G
WARNING
Batterya cid is caustic. There is arisk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean over the battery. Keep children away from
batteries. Wash battery acid immediately with
water and seek medical attention.
H
Environmental note Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment. Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to aqualified
specialist workshop or a
special collection point for
used batteries.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the
MaintenanceB ooklet or contact aqualified
specialist workshop for more information.
! You should have all work involving the
battery carried out at aqualified specialist
workshop. In th eexcepti onal cas ethatitis
necessar yfor you to disconnect th ebattery
yourself, mak esure that:
R you switch off th eenginea nd remove the
SmartKey. On vehicles wit hKEYLESS-
GO, ensure that th eignition is switched
off .C heck that all the indicator lamps in
the instrumentc luster are off.Otherwise,
electroni ccomponents, such as the
alternator ,may be damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic
system may be damaged.
R the transmission is locked in position P
after disconnectingt he battery. The
vehicle is secured against rolling away.
You can then no longer move the vehicle. Battery (vehicle)
323Breakdown assistance Z

over the battery. Keep children away from
batteries. Wash battery acid immediately with
water and seek medical attention. G
WARNING
Ad ischarged battery can freeze at
temperatures below freezin gpoint .When
jump-starting the vehicle or charging the
battery, gases can escape from the battery.
There is arisk of an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a
maximum charging voltage of 14.8 V.
! Only charge the battery using the jump-
startingc onnection point.
The jump-starting connection point is in the
engine compartment( Ypage 326).
X Open the hood (Y page 306).
X Connect the battery charger to the positive
terminal and ground point in the same
order as when connecting the donor
battery in the jump-starting procedure
(Y page 326).
If, at low temperatures, the indicator lamps/
warning lamps in the instrumentc luster do
not light up, it is highly likely that the
discharged battery has frozen.Int his case,
you may neither charge the battery nor jump-
start the vehicle. The service life of athawed-
out battery may be shorter. The starting
characteristics may be impaired, especiallyat
low temperatures. Have the thawed-out
battery checked at aqualified specialist
workshop.
Never charge abattery still installed in the
vehicle unless abattery charger unit
approved by Mercedes-Ben zisbeing used. A
battery charger unit speciallya dapted for
Mercedes-Benz vehicles and tested and
approved by Mercedes-Benz is available as an
accessory. It permits the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Center for further information and availability. Read the battery
charger's operating instructions before
charging the battery. Battery (vehicle)
325Breakdown assistance Z