engine MERCEDES-BENZ CLS COUPE 2012 Owners Manual

R
Vehicles with akey:
do not remove the key from the ignition
lock. 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. You
can prevent this by shifting the auto-
matic transmission to Nbeforehand.
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 key to position 2(Ypage 141) in
the ignition lock.
Use the key instead of the Start/Stop but-
ton on vehicles with KEYLESS-GO.
X Depress and hold the brake pedal.
X Shift the automatic transmission to posi-
tion N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the key in
the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
Wash off excess dirt before cleaning the vehi-
cle in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windscreen and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residueont he wind-
screen.
Washing by hand In some countries, washing by hand is only
allowed at specially equipped washing bays. Observe the legal requirements for each indi-
vidual country.
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.
High-pressure cleaninge quipment G
WARNING
Do not use high-pressure cleaners with circu-
lar-jet nozzles (dirt grinders) to clean your
vehicle, in particular the tyres. You could oth-
erwise damage the tyres and cause an acci-
dent.
! Always maintain adistance of at least
30 cm between the vehicle and the high-
pressure cleaner nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the high-pressure cleaner nozzle
around when cleaning your vehicle.
Do not aim directly at any of the following:
R tyres
R door gaps, roof gaps, jointse tc.
R electrical components
R battery
R connectors
R lights 302
CareMaintenance and care

The vehicle tool kit contains:
R
Foldable wheel chock
R Fuse allocation chart
R Jack
R Centrin gpin
R One pair of gloves
R Wheel wrench
R Towing eye
Vehicles with acollapsible emergency
spare wheel (AMG vehicles) :
Towin geye
; Onep air of gloves
= Jack
? Folding wheel chock
A Centrin gpin
B Sheet for fault ywheel
C Tyre inflatio ncompressor
D Wheel wrench
E Fuse allocation chart
X Open the boot lid.
X Lift the boot floor upwards (Y page 278).Flat tyre
Preparing the vehicle
Information on changing awheel/fitting
(Y page 336).
Vehicle preparation is not necessary on vehi-
cles with MOExtended tyres. Your vehicle may be equipped with:
R
MOExtended tyres (tyres with run-flat char-
acteristics) (Y page 313)
R aT IREFIT kit (Y page 313)
R an emergenc yspare wheel (only for certain
countries) (Y page 351)
X Stop the vehicle as far away as possible
from traffic on solid, non-slippery and level
ground.
X Switch on the hazard warning lamps.
X Apply the parking brake.
X Bring the front wheels into the straight-
ahead position.
X Shift the transmission to position P.
X Vehicles with AIRMATIC: make sure that
"normal" level is selected (Y page 181).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the key from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the key having been
removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 141).
X All occupant smust 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. Any-
one 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 traf-
fic conditions when doing so.
X Close the driver's door.
X Place the warning triangle asuitable dis-
tancea way (Y page 310). Observe legal
requirements. 312
Flat tyreBreakdown assistance

Battery aci
discaustic.
Avoid contact with the skin,
eyes or clothing.
Wea rsuitable protective
clothing ,inparticular
gloves, an apro nand aface
mask.
Immediately rins eacid
splashes off with clean
water. Consult adoctor if
necessary. Wear ey
eprotection. Kee
pchildren away. Observ
ethisO wner'sM an-
ual. G
WARNING
For safety reasons ,Mercedes-Benz recom-
mend stha tyou only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to prevent vehi-
cle occupant sfrom suffering acid burns
should the battery be damaged in the event
of an accident.
To prevent acid burns, observe the following
safety notes when handling batteries:
R do not lean over the battery.
R do not place any metal object sonabattery.
Otherwise, you could cause ashort circuit
and the battery's gas mixture could ignite.
R make sure that you do not create an elec-
trostatic charge, e.g. by wearing synthetic
clothin gorasar esult of friction on fabrics.
Therefore, you should not pull or slide the
battery over carpets or other synthetic
materials. R
never touch the battery first. To discharge
ap ossible electrostatic charge, step out of
the vehicle first and touch the bodywork.
R do not wipe the battery using acloth. The
battery may explode as aresult of electro-
static charge or due to flying sparks. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in an
environmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to
aqualified spe-
cialis tworkshop or to acol-
lection point for used batter-
ies.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the Service
Booklet 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
key. On vehicles wit hKEYLESS-GO,
ensure that th eignition is switched off.
Chec kthat all the indicator lamps in the
instrumentc luster are off. Otherwise,
electronic components, 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. Battery (vehicle)
317Breakdown assistance Z

Otherwise, the vehicle's electronic sys-
tem may be damaged.
R in vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. The vehi-
cle is secured against rolling away. You
can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be fitted securely dur-
ing operation.
In order for the battery to achieve the maxi-
mum possibles ervice life, it must always be
sufficiently charged.
The vehicle battery, like other batteries, can
discharge over time if you do not use the
vehicle. In such cases, have the battery dis-
connected at aqualified specialist workshop.
You can also charge the battery with a
charger recommended by Mercedes-Benz.
For more information, please contact aquali-
fied specialist workshop.
Have the battery charge checked more fre-
quently if you use the vehicle mainly for short
trips or if you leave it standing idle for a
lengthy period. Consult aqualified specialist
workshop if you wish to leave your vehicle
parked up for along period of time.
i When you park the vehicle, remove the
key if you do not require any electrical con-
sumers. The vehicle will then use very little
energy, thus conserving battery power.
i After an interruption of the power supply,
e.g. the battery was discharged, you have
to:
R set the clock. Information on setting the
clock can be found in the separate oper-
ating instructions.
On vehicles with COMAND Online and a
navigation system, the clock is set auto-
matically.
R reset the function for folding the exterior
mirrors in/out automatically, by folding
the mirrors out once (Y page 106). Charging the battery
G
WARNING
Only charge the battery in awell-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This could injure you and other persons or
cause damage to the paintwork or acid cor-
rosion on the vehicle.
You can obtain information on battery charg-
ers which allow the battery to be charged
while still installed from aqualified specialist
workshop. G
WARNING
There is arisk of acid burns during the charg-
ing process due to the gases which escape
from the battery. Do not lean over the battery
during the charging process. G
WARNING
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
! Only charge the installed battery with a
battery charger which has been tested and
approved by Mercedes-Benz.T hese battery
chargers allow the battery to be charged
while still installed in the vehicle.
! Only use battery chargers with amaxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartment( Ypage 319).
Read the battery charger's operating instruc-
tions before charging the battery.
X Open the bonnet (Y page 296).
X Connect the battery charger to the positive
terminal and earth point in the same order
as when connecting the donor battery in
the jump-starting procedure
(Y page 319). 318
Battery (vehicle)Breakdown assistance

Jump-starting
G
WARNING
There is arisk of acid burns when jump-starting avehicle due to the gases which escape from
the battery. Do not lean over the battery while the engine is being jump-started. G
WARNING
Gases escaping from the battery during jump-starting may cause minor explosions. Avoid cre-
ating sparks. Keep naked flames away from the battery, and do not smoke.
Comply with the important safety precautions when handling batteries. You will find these under
"Battery (vehicle) -important safety notes" in the index. G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is arisk of fire. Avoid
repeated and lengthy starting attempts.
! Vehicles with apetrol engine: avoid repeated and length ystarting attempts. Otherwise,
th en on-combusted fuel may damage th ecatalytic converter.
Do not use arapid chargin gdevic etos tart th evehicle. If your vehicle's batter yisdischarged,
the engin ecan be jump-started from another vehicle or from asecon dbatter yusing jump
leads. Observe the following points:
R The batter yisnot accessible in all vehicles. If the other vehicle's batter yisnot accessible,
jump-start the vehicle using asecond battery or ajump-starting device.
R vehicles with apetrol engine: onlyjump-star tthe vehicle when the engine and exhaust
system are cold.
R do not start the engine if the battery is frozen.L et the battery thaw first.
R jump-starting may only be performed from batteries with anominal voltage of 12 V.
R only use jump leads that have asufficient cross-section and insulated terminal clamps.
R if the battery is fully discharged, leave the battery that is being used to jump-start connected
for afew minutes before attempting to start. This charges the empty battery alittle.
R make sure that the two vehicles do not touch.
Make sure that:
R The jump leads are not damaged.
R Non-insulated parts of the terminal clamps do not come into contact with other metal parts
while the jump leads are connected to the battery.
R the jump leads cannot come into contact with parts such as the V-belt pulleyort he fan.
These parts move when the engine is started and while it is running.
X Firmly depress the parking brake.
X Shift the transmission to position P.
X Switch off all electrical consumers (e.g. radio, blower, etc.).
X Open the bonnet (Y page 296).
Position number Bidentifies the charged battery of the other vehicle or an equivalent jump-
startingd evice. Jump-starting
319Breakdown assistance Z

X
Slide cover :of positive terminal ;in the direction of the arrow.
X Connect positive terminal ;on your vehicl etopositive terminal =of dono rbattery B
using the jump lead .Always begin with positive terminal ;on your own vehicle first.
X Start the engine of the dono rvehicle and run it at idling speed.
X Connec tnegativ eterminal ?of donor battery Bto earth point Aof your vehicle using
the jump lead, connectingt he jump lead to donor battery Bfirst.
X Start the engine.
X Before disconnecting the jump leads, let the engines run for several minutes.
X First, remove the jump leads from earth point Aand negative terminal ?,then from pos-
itive terminal ;and positive terminal =,each time beginning at the contacts on your own
vehicle first.
X Close cover :of positive terminal ;after removing the jump leads.
X Have the battery checked at aqualified specialist workshop.
i Jump-starting is not considered to be anormal operating condition.
i Jump-starting cables and further information regarding jump startingc an be obtained at
any qualified specialist workshop. Towing and tow-starting
Important safety notes
G
WARNING
If you tow the vehicle, you must use arigid
towing bar if: R
the engine is not running.
R there is abrake system malfunction.
R there is amalfunction in the power supply
or the vehicle's electrical system.
The power assistance for the steering and the
brake force booster do not work when the
engine is not running. You will need more
force to steer and brake, you may have to
depress the brake pedal with maximum force. 320
Towing and tow-startingBreakdown assistance

much more effort to brake and steer the vehi-
cle. Adapt yours tyleofd rivingaccordingly.
It is important tha tyou observe the safety
instructions when towing away your vehicle
(Y page 320).
The automatic transmission automatically
shifts to position Pwhen you open the driver's
or front-passenger door or when you remove
the key from the ignition lock. In order to
ensure that the automatic transmission stays
in position Nwhen towing the vehicle, you
must observe the following points:
X Make sure that the vehicle is stationary and
that the key is in position 0in the ignition
lock.
X Turn the key to position 2in the ignition
lock.
On vehicles with KEYLESS-GO, use the key
instead of the Start/Stop button
(Y page 141).
X Depress and hold the brake pedal.
X Shift the automatic transmission to posi-
tion N.
X Release the brake pedal.
X Release the parking brake.
X Switch on the hazard warning lamps
(Y page 114).
X Leave the key in position 2in the ignition
lock.
i When towing with the hazard warning
lamps switched on, use the combination
switch as usual to signal achange of direc-
tion. In this case, only the turn signals for
the desired direction flash. When the com-
bination switch is reset, the hazard warning
lamps start flashing again. Transporting the vehicle
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components. Oth-
erwise, the vehicle could be damaged. The towing eye can be used to pull the vehicle
onto atrailer or transporter for transporting
purposes.
X Turn the key to position 2in the ignition
lock.
X Shift the automatic transmission to posi-
tion N.
As soon as the vehicle is loaded:
X Prevent the vehicle from rolling away by
applying the parking brake.
X Shift the automatic transmission to posi-
tion P.
X Turn the key in the ignition lock to position
0and remove the key from the ignition
lock.
X Secure the vehicle. Notes for 4MATIC vehicles
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged.
If the vehicle has transmission damage or
damage to the front or rear axle, have it trans-
ported on atransporter or trailer.
In the event of damage to the electrical
system
If the battery is defective, the automatic
transmission will be locked in position P.To
shift the automatic transmission to position
N,y ou must provide power to the vehicle's
electrical system in the same way as when
jump-starting (Y page 319).
Have the vehicle transported on atransporter
or trailer. Tow-starting (emergency engine
starting)
! Vehicles with automatic transmission
must not be tow-started. The transmission
may otherwise be damaged. Towing and tow-starting
323Breakdown assistance Z

You can fin
dinformation on "Jump-starting"
at (Y page 319). Electrical fuses
Important safet
ynotes G
WARNING
Only use fuses that have been approved for
Mercedes-Ben zvehicles and which have the
correct fuse ratin gfor the systems con-
cerned. Do not attempt to repair or bridge
faulty fuses. Using fuses which have not been
approved or attempting to repair or bridge
faulty fuses could cause the fuse to be over-
loaded and result in afire. Have the cause
traced and rectified at aqualified specialist
workshop.
! Only use fuses that have been approved
for Mercedes-Benz vehicles and which
have the correct fuse ratin gfor the system
concerned. Otherwise, componentsors ys-
tems could be damaged.
The fuses in your vehicle serve to close down
faulty circuits. If afuse blows ,all th ecom po-
nent sont hecircuit and their function sstop
operating.
Blown fuse smust be replace dwith fuses of
the same rating, which you can recognise by
the colour and fuse rating. The fuse ratings
are listed in the fuse allocation chart.
If the newly inserted fuse also blows, have the
cause traced and rectified at aqualified spe-
cialist workshop, e.g. aMercedes-Benz
Servic eCentre. Befor
ereplacing afuse
X Secure the vehicle against rollin gaway
(Y page 159).
X Switch off all electrical consumers. X
Turn the key to position 0in the ignition
lock and remove it (Y page 141).
or
X On vehicles with KEYLESS-GO, make sure
the ignition is switched off (Y page 141).
All indicator lamps in the instrumen tcluster
must be off.
The fuses are located in various fuse boxes:
R fuse box in the engine compartmen tonthe
left-hand side of the vehicle, when viewed
in the direction of travel
R fuse box in the boot on the right-hand side
of the vehicle, when viewed in the direction
of travel
the fuse allocation chart is located in the vehi-
cle tool kit in the stowage compartment
under the boot floor (Y page 311). Fuse box in the engine compartment
G
WARNING
Make sure that the windscreen wipers are
turned off and the key is pulledo ut of the igni-
tion lock before you open the cover of the fuse
box. Otherwise, the windscreen wipers and
the wiper rods above the cover could be set
in motion. This could lead to you or others
being injured by the wiper rods.
! Make sure that no moisture can enter the
fuse box when the cover is open.
! When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
seeping in or dirt could otherwise impair
the operation of the fuses.
X Make sure that the windscreen wipers are
switched off.
X Open the bonnet. 324
Electrical fusesBreakdown assistance

Storing wheels
Storew heels that are not being used in acool,
dry and preferably dark place. Protect the
tyres against oil, grease, petrol and diesel. Cleaning the wheels
G
WARNING
The water jet of circular-jet nozzles (dirt grind-
ers) can cause damage not visible from the
outside to tyres or chassis components. Com-
ponentsd amaged in this way can unexpect-
edly fail. There is arisk of an accident.
Do not use high-pressure cleaners with circu-
lar-jet nozzles to clean the vehicle. Have dam-
aged tyres or chassis components replaced
immediately. Fitting
awheel
Preparing the vehicle X
Stop the vehicle on solid, non-slippery and
leve lground.
X Apply the parking brake.
X Bring the front wheels into the straight-
ahead position.
X Shift the transmission to position P.
X Vehicles with AIRMATIC :make sure that
"normal" leve lisselecte d(Ypage 181).
X Switch off th eengine.
X Vehicles without KEYLESS-GO: remove
th ek eyfrom th eignition lock.
X Vehicles with KEYLESS-GO: open the
driver' sdoor.
The on-board electronics have status 0,
whic hist hesame as th ekeyhaving been
removed.
X Vehicles with KEYLESS-GO: remove the
Start/Sto pbutto nfromt heignition lock
(Y page 141). X
If included in th evehicle equipment,
remove th etyre-chang etoolkit from the
vehicle.
X Secure th evehicle to preven titfrom rolling
away.
i Apart from certain country-specific varia-
tions, the vehicles are not equipped with a
tyre-change tool kit. Some tools for chang-
ing awhee lare specific to the vehicle. For
more information on which tools are
required to perform awhee lchange on your
vehicle, consult aqualified specialist work-
shop.
Necessary wheel-changing tools can
include, for example:
R jack
R whee lchock
R whee lwrench
Securing the vehicle agains trolling
away If your vehicle is equipped with
awheel chock,
it can be foun dinthetyre-change tool kit
(Y page 311).
The folding wheel chock is an additional
securin gmeasur etoprevent th evehicle from
rollin gaway, for example when changin ga
wheel.
X Fold bot hplates upwards :.
X Fold out lower plate ;.
X Guide th elugs on th elower plat efully into
th eo pening sinbase plate =. Changing
awheel
337Wheels and tyres Z

Securing the vehicle on level ground
X
On level ground: place chocks or other
suitabl eitem sunder the front and rea rof
the whee ltha tisd iagonally opposite the
wheel you wish to change. Securing the vehicle on slight downhill gradients
X
On light downhill gradients: place
chocks or other suitablei tems in front of
the wheels of the front and rear axle.
Raising the vehicle G
WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is arisk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle. The following must be observed when raising
the vehicle:
R
to raise the vehicle, only use the vehicle-
specific jack that has been tested and
approved by Mercedes-Benz.Ift he jack is
used incorrectly, it could tip over while the
vehicle is raised.
R the jack is designed only to raise and hold
the vehicle for ashort time while awheel
is being changed. It is not suited for per-
forming maintenance work under the vehi-
cle.
R avoid changing the wheel on uphilla nd
downhill slopes.
R before raising the vehicle, secure it from
rolling awaybya pplying the parking brake
and inserting wheel chocks. Never disen-
gage the parking brake while the vehicle is
raised.
R the jack must be placed on afirm, flat and
non-slip surface. On aloose surface, a
large, load-bearing underlay must be used.
On aslippery surface, anon-slip underlay
must be used, e.g. rubber mats.
R do not use wooden blocks or similar
objects as ajack underlay.O therwise, the
jack will no tbea ble to achiev eits load-
bearin gcapacity due to the restricted
height.
R mak esure that the distanc ebetween the
underside of the tyre sand the groun ddoes
not exceed 3cm.
R never place your hands or feet under the
raised vehicle.
R never lie under the raised vehicle.
R never start the engine when the vehicle is
raised.
R never open or clos eadoor or the boot lid
when the vehicle is raised.
R mak esure that no persons are present in
the vehicle when the vehicle is raised. 338
Changin
gawheelWheels and tyres