ECU MERCEDES-BENZ CLS 2014 Workshop Manual

Never exceed the maximum roof load and
adjust yourdriving style.
!Mercedes-Benz recommends that you
only use roof carriers that have been tested
and approved for Mercedes-Benz vehicles.
This helpstoprevent damage to the
vehicle.
Position the loadonthe roof carrierinsuch
away that thevehiclewill notsustain
damageevenwhen it is in motion.
Ensure that, depending on the vehicle's
equipment, you can raise the sliding
sunroof fully and open the trunk lid fully
when the roof carrier is installed.
!To avoid damaging or scratching the
covers, do not use metallic or hard objects
to open them.
The maximum roof load is 220 lbs(100 kg).
An incorrectly secured roof carrier or roof
load may become detached from the vehicle.
You must therefore ensure that you observe
the roof carrier manufacturer's installation
instructions.
Attaching the roof carrier
XOpen coverscarefully in the direction of
the arrow.
XOnly secure the roof carrier to the
anchorage points under covers.
XObserve the manufacturer's installation
instructions.
Features
Cup holder
Important safety notes
!Only use the cup holders for containers of
the right size and which have lids. The
drinks could otherwise spill.
Cup holder in the front-compartment
center console
All vehicles (except AMG)
Cup holder
AMG vehicles
Cup holder
Cover
XTo open:slide coverto its foremost
position.
You can remove the cup holder's rubber mat
for cleaning. Cleanwith clear,lukewarm
water only.
AMG vehicles: you can remove the rubber
mat of the cup holder in the direction of the
284Features
Stowage and features

arrow to clean it. Clean withclear, lukewarm
wateronly.
Cupholder in the rear-compartment
centerconsole
XTo open:slide coverforwards.
XTo remove theinsert:slide catch
inwards in thedirectionofthe arrow.
XRemove cup holder insert$upwards.
XTo re-install the insert:place the insert in
the stowage space.
XSlide catchoutwards in the direction of
the arrow until it engages.
You can remove the insert and the rubber mat
of the cup holder to clean them. Cleanthem
with clean, lukewarm water only.
Cup holder in the rear seat armrest
!Do not sit on or support your body weight
on the rear seat armrest when it is folded
down, as you could otherwise damage it.
!Close the cup holder before folding the
rear seat armrest up. Otherwise, the cup
holder could be damaged.
XFold down the rear seat armrest.
XTo open:raise the rear seat armrest cover.
XPress release catch.
Cup holderfolds out forwards.
XSwing the rear seat armrest cover back
down, if necessary.
XTo close:raise the rear seat armrest cover.
Swing cup holderback until it engages.
Bottle holder
Observe the "Important safety notes" in the
"Stowage compartments" section
(Ypage 278).
GWARNING
If objectsinthe passenger compartmentare
stowed incorrectly, they can slide or be
thrown around and hit vehicle occupants.
There isarisk of injury, particularly in the
event of sudden braking orasudden change
in direction.
RAlways stow objectssothat they cannot be
thrown around in such situations.
RAlways make sure that objectsdonot
protrude from stowage spaces, parcel nets
or stowage nets.
RClose the lockable stowage spaces while
driving.
RAlways stow and secure heavy, hard,
pointed, sharp-edged, fragile or bulky
objectsinthe trunk/cargo compartment.
Features285
Stowage and features
Z

!Make sure that any bottles weighing more
than 1.1 lb(0.5 kg) that are stored in the
bottle holder, rest on the vehicle floor. The
bottle holder could otherwise be damaged.
XPress the outer edge of buttonand slide
in the direction of the arrow until the bottle
fits into the opening.
XInsert the bottle into the bottle holder.
The bottle holder is suitablefor bottles with a
capacity of 25 fl. oz. (0.7l)to 54 fl.oz.
(1.5l).
Thebottle holder does not secure the bottles;
it merelyprevents themfromtipping over.
Sun visors
Overview
GWARNING
If the mirrorcover of the vanity mirrorisfolded
up when the vehicleisinmotion, youcould be
blinded by incident light. There isariskofan
accident.
Alwayskeepthe mirrorcover folded down
while driving.
Mirror light
Bracket
$Retaining clip, e.g. foracar park ticket
!Vanity mirror
Mirror cover
Vanitymirror in the sun visor
Mirror lightonly functions if the sun visor
is clipped into bracketand mirror cover
has been folded up.
Glare from the side
XFold down sun visor.
XPull sun visorout of retainer.
XSwing sun visorto the side.
XSlide sun visorhorizontally as required.
286Features
Stowage and features

General notes
An emergency call is dialed automatically if
an air bag or Emergency Tensioning Device is
triggered.
iYou cannot end an automatically
triggered emergency call yourself.
An emergency call can alsobeinitiated
manually.
As soon as the emergency call has been
initiated, the indicator lamp in the SOS button
flashes. The multifunction display shows the
Connecting Callmessage.
The audio outputismuted.
Once the connection has been made, the
Call Connectedmessage appears in the
multifunction display.
All important information on the emergency
is transmitted, for example:
RCurrent location of the vehicle (as
determined by the GPS system)
RVehicle identification number
RInformation on the severity of the accident
Shortly after the emergency call has been
initiated,avoice connection is automatically
established between the Mercedes-Benz
Customer Assistance Center and the vehicle
occupants.
RIf the vehicle occupants respond, the
Mercedes-Benz Customer Assistance
Center attempts to get more information
on the emergency.
RIf there is no response from the vehicle
occupants, an ambulance is immediately
sent to the vehicle.
If no voice connection can be established to
the response center, the system was unable
to initiate an emergency call. This can occur
for instance if the relevant mobile phone
network is not available. The indicator lamp
in the SOS button flashes continuously.
TheCall Failedmessage appears in the
multifunction displayand must be confirmed.
In this case, summon assistance by other
means.
Making an emergency call
GWARNING
It can be dangerous to remain in the vehicle,
even if you have pressed the SOS button in an
emergency if:
Ryou see smoke inside or outside of the
vehicle, e.g. if there isafire after an
accident
Rthe vehicle is onadangerous section of
road
Rthe vehicle is not visible or cannot easilybe
seen by other road users, particularly when
dark or in poor visibility conditions
There isarisk of an accident and injury.
Leave the vehicle immediately in this or
similar situations as soon as it is safe to do
so. Move toasafe location along with other
vehicle occupants. In such situations, secure
the vehicle in accordance with national
regulations, e. g. withawarning triangle.
XTo initiate an emergency call
manually:press coverbriefly to open.
XPress SOS buttonbriefly.
The indicator lamp in SOS button
flashes until the emergency call is
concluded.
XWait foravoice connection to the
Mercedes-Benz Customer Assistance
Center.
XAfter the emergency call, close cover.
iIf the mobile phone network is
unavailable, mbrace will not be able to
make the emergency call. If you leave the
292Features
Stowage and features

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

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

Cleaning thevehicle parts
Cleaning thewheels
!Do notuse acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
!Do not park the vehicle for an extended
period straight after cleaning it, 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 forafew minutes after
cleaning. Braking heats the brake discs and
the brake pads/linings, thus drying them.
The vehicle can then be parked.
Cleaning the windows
GWARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshieldorwiper blades. There isarisk of
injury.
Always switch off the windshieldwipers and
the ignition before cleaning the windshieldor
wiper blades.
!Do not use dry cloths, abrasive products,
solvents or cleaning agents containing
solvents to clean the inside of the windows.
Do not touch the insides of the windows
with hard objects, e.g. an ice scraper or
ring. There is otherwisearisk of damaging
the windows.
!Cleanthe water drainage channels of the
windshield and the rear window at regular
intervals. Deposits such as leaves, petals
and pollen may under certain
circumstances prevent water from draining
away.This can lead to corrosion damage
and damage to electronic components.
XCleanthe inside and outside of the
windows withadamp cloth andacleaning
product that is recommended and
approved by Mercedes-Benz.
Cleaningwiper blades
GWARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades. There isarisk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
!Do not pull the wiper blade. Otherwise,
the wiper blade could be damaged.
!Do not clean wiper blades too often and
do not rub them too hard. Otherwise, the
graphite coating could be damaged. This
could cause wiper noise.
!Hold the wiper arm securely when folding
back. The windshield could be damaged if
the wiper arm smacks against it suddenly.
XFold the windshield wiper arms away from
the windshield.
XCarefully clean the wiper blades with a
damp cloth.
XFold the windshield wiper arms back again
before switching on the ignition.
Cleaningthe exterior lighting
!Only use cleaning agents or cleaning
cloths which are suitable for plastic light
lenses. Unsuitable cleaning agents or
cleaning cloths could scratchordamage
the plastic light lenses.
XCleanthe plastic lenses of the exterior
lighting usingawet sponge andamild
cleaning agent, e.g. Mercedes-Benzcar
shampoo or cleaningcloths.
Mirror turn signals
!Only use cleaningagents or cleaning
clothsthatare suitable for plastic lenses.
Unsuitable cleaningagents or cleaning
clothscould scratch or damagetheplastic
lenses of themirror turnsignals.
314Care
Maintenance and care

Alignment bolt
%Sheet for faulty wheel
Tire inflation compressor
Lugwrench
Fuseallocation chart
XOpenthe trunk lid.
XLift the trunk floor upwards (Ypage 283).
Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
RMOExtended tires (tires with run-flat
properties) (Ypage 321)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
Ran emergency spare wheel(Ypage 367)
Information on changing/mountingawheel
(Ypage 357).
XStop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
XSwitch on the hazard warning lamps.
XSecure the vehicle against rolling away
(Ypage 167).
XIf possible, bring the front wheels into the
straight-ahead position.
XVehicles with AIRMATIC: make sure that
"normal" level is selected (Ypage 189).
XSwitch off the engine.
XVehicles without KEYLESS-GO:remove
the SmartKey from the ignition lock.
XVehicles with KEYLESS-GO:open the
driver's door.
The on-board electronicsnow have 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).
XAll occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
XMake sure that no one is near the danger
area whileawheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
XGet out of the vehicle. Pay attention to
traffic conditionswhen doing so.
XClose 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 isatotal loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognizeMOExtended 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
(Ypage 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 pressureloss warning message
appearsinthe multifunction display:
RObserve the instructions in the display
messages (Ypage 258).
RCheck the tire for damage.
RIf 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 tire321
Breakdown assistance

Beforehandling the battery,touch the vehicle
bodytoremove any existing electrostatic
build-up.
The highly flammable gasmixture forms when
charging the battery as well as whenjump-
starting.
Always makesure that neither you northe
battery is electrostatically charged.Abuild-
up of electrostaticcharge can be caused, for
example:
Rby wearing clothing made from synthetic
fibers
Rdue to friction between clothing and seats
Rif you push or pull the battery across the
carpet or other synthetic materials
Rif you wipe the battery withacloth
GWARNING
During the charging process,abattery
produces hydrogen gas. Ifashort circuit
occurs or sparks are created, the hydrogen
gas can ignite. There isarisk of an explosion.
RMake sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
RNever place metal objectsortools on a
battery.
RIt is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
RIt is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
RNever connect or disconnectthe battery
terminals while the engine is running.
GWARNING
Batteryacid is caustic. There isarisk 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.
HEnvironmental 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 toaqualified
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
MaintenanceBooklet or contactaqualified
specialist workshop for more information.
!You should have all work involving the
battery carried out ataqualified specialist
workshop. In theexceptional casethatitis
necessaryfor you to disconnect thebattery
yourself, makesure that:
Ryou switch off theengineand remove the
SmartKey. On vehicles withKEYLESS-
GO, ensure that theignition is switched
off.Check that all the indicator lamps in
the instrumentcluster are off.Otherwise,
electroniccomponents, such as the
alternator,may be damaged.
Ryou 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.
Rthe transmission is locked in positionP
after disconnectingthe battery. The
vehicle is secured against rolling away.
You can then no longer move the vehicle.
Battery (vehicle)323
Breakdown assistance
Z

The battery and the cover of the positive
terminal clamp must be installed securely
during operation.
Comply with safety precautions and take
protective measures when handling
batteries.
Risk of explosion.
Fire, open flames and smokingare
prohibited when handling the
battery. Avoid creatingsparks.
Battery acid is caustic. Avoid
contact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and
faceguard.
Rinse any acid spills immediately
with clear water. Contact a
physician if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz
recommends that you only use batteries
which have been tested and approved for
your vehicle by Mercedes-Benz.These
batteries provide increased impact
protection to prevent vehicle occupants from
suffering acid burns should the battery be
damaged in the event of an accident.
In order for the battery to achieve the
maximum possible service 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 this case, have the battery
disconnected ataqualified specialist
workshop. You can also charge the battery
withacharger recommended by Mercedes-
Benz.Contactaqualified specialist workshop
for further information.
Have the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standingidle
foralengthy period. Consultaqualified
specialist workshop if you wish to leave your
vehicle parked foralong period of time.
iRemove the SmartKey if you park the
vehicle and do not require any electrical
consumers. The vehicle will then use very
little energy, thus conserving battery
power.
iIf the power supply has been interrupted,
e.g. if you reconnect the battery, you will
have to:
Rset the clock.Information on setting the
clock can be found in the separate
operating instructions.
On vehicles with COMAND and a
navigation system, the clock is set
automatically.
Rreset the function for folding the exterior
mirrors in/out automatically, by folding
the mirrors out once (Ypage 110).
Charging the battery
GWARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a
risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean overabattery.
GWARNING
Battery acid is caustic. There isarisk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
324Battery (vehicle)
Breakdown assistance