service interval MERCEDES-BENZ CLS 2014 Owners Manual

1, 2,3...
12Vsocket
see Sockets
4ETS
see ETS/4ETS (Electronic
TractionSystem)
4MATIC (permanent four-wheel
drive)..................................................193
4MATIC off-road system...................193
A
ABS (Anti-lock Braking System)
Display message............................238
Function/notes ................................ 66
Important safety notes....................66
Warning lamp ................................. 267
Activating/deactivating cooling
with air dehumidification.................136
Active BlindSpot Assist
Activating/deactivating (on-
board computer)............................228
Display message............................254
Function/information....................211
Active Driving Assistancepackage.211
Active Lane KeepingAssist
Activating/deactivating (on-
board computer)............................229
Display message............................253
Function/information....................214
Active light function.........................121
Active multicontour seat
Adjusting (on the seat)..................103
Active Parking Assist
Detecting parking spaces..............197
Display message............................254
Function/notes.............................196
Important safety notes..................196
Parking..........................................198
ADAPTIVE BRAKE................................. 72
Adaptive DampingSystem(ADS).....190
Adaptive Highbeam Assist
Display message............................248
Function/notes.............................121
Additives (engine oil)........................376
Airbags
Display message............................244
Front airbag (driver, front
passenger).......................................44
Important safety notes....................42
Knee bag .......................................... 45
PASSENGER AIR BAG OFF
indicator lamp..................................47
Pelvis airbag...................................46
Safety guidelines.............................41
Side impact airbag..........................45
Windowcurtain air bag....................47
Air-conditioningsystem
see Climate control
AIRFLOW...........................................137
AIRMATIC
Display message............................252
Function/notes.............................189
Airvents
Glove box ....................................... 142
Important safetynotes..................142
Rear...............................................143
Setting...........................................142
Setting the center airvents...........142
Setting the sideairvents...............142
Ambient lighting
Setting the brightness (on-board
computer)......................................231
Setting the color (on-board
computer)......................................231
AMG adaptive sport suspension
system................................................ 190
Ashtray...............................................287
Assistancedisplay (on-board
computer)..........................................227
Assistancemenu (on-board
computer)..........................................227
ASSYST PLUS
Displayingaservice message........310
Hidingaservice message..............310
Notes.............................................309
Resetting the service interval
display...........................................310
Service message ............................ 309
Specialservice requirements ......... 310
4Index

Protection of the environment
General notes
HEnvironmental note
Daimler's declared policy is one of
comprehensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and inamanner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an
environmentally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected
by these factors:
Roperating conditionsofyour vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel
consumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Rremove roof racks once you no longer need
them.
Raregularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
Ralways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal when
startingthe engine.
Rdo not warm up the engine when the vehicle
is stationary.
Rdrive carefully and maintainasafe distance
from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each gear
only up toof its maximum engine speed.
Rswitch off the engine in stationary traffic.
Rkeep an eye on the vehicle's fuel
consumption.
Environmental concerns and
recommendations
Wherever the operating instructions require
you to dispose of materials, first try to
regenerate or re-use them. Observe the
relevant environmental rules and regulations
when disposing of materials. In this way you
will help to protect the environment.
Product information
Mercedes-Benz recommends that you use
genuine Mercedes-Benz parts, conversion
parts and accessories that have been
approved for your vehicle.
Mercedes-Benz tests genuine parts as well as
conversion parts and accessories that have
been specifically approved for your vehicle for
their reliability, safety and suitability. Despite
ongoing market research, Mercedes-Benz is
unable to assess other parts. Therefore,
Mercedes-Benz accepts no responsibility for
the use of such parts in Mercedes-Benz
vehicles. This is also the case, even if they
have been independently or officially
approved. The use of non-approved parts
could affect your vehicle's operating safety.
Genuine Mercedes-Benz parts, approved
conversion parts and accessories are
available from any authorized Mercedes-Benz
Center. Here, you will receive advice about
permissible technical modifications, and the
parts will be professionally installed.
Introduction21
Z

Service and vehicle operation
Service and literature
Your vehicle is covered under the terms of the
warranties printed in the Service and
Warranty Information booklet. Your
authorized Mercedes-Benz Center will
exchange or repair any defective parts
originally installed in the vehicle in
accordance with the terms of the following
warranties:
RNew Vehicle Limited Warranty
REmission Systems Warranty
REmission PerformanceWarranty
RCalifornia, Connecticut, Maine,
Massachusetts, New York, Pennsylvania,
Rhode Island and Vermont Emission
Control Systems Warranty
RStatewarranty enforcement laws (lemon
laws)
Information for customers in
California
Under California law you may be entitled to a
replacement of your vehicle orarefund of the
purchase price or lease price, if after a
reasonable number of repair attempts
Mercedes-Benz USA, LLC and/or its
authorized repair or service facilities fail to fix
one or more substantial defects or
malfunctionsinthe vehicle that are covered
by its express warranty. During the period of
18 months from original delivery of the
vehicle or the accumulation of 18,000 miles
(approximately 29,000 km) on the odometer
of the vehicle, whichever occurs first, a
reasonable number of repair attemptsis
presumed foraretail buyer or lessee if one or
more of the following occurs:
(1) the same substantial defect or
malfunction results inacondition that is
likely to cause death or serious bodily
injury if the vehicle is driven, that defect
or malfunction has been subject to repair
two or more times, and you have directly
notified Mercedes-Benz USA, LLC in
writing of the need for its repair,
(2) the same substantial defect or
malfunction ofaless serious nature than
category (1) has been subject to repair
four or more times and you have directly
notified us in writing of the need for its
repair, or
(3) the vehicle is out of service by reason of
repair of the same or different substantial
defects or malfunctionsforacumulative
total of more than 30 calendar days.
Please send your written noticeto:
Mercedes-Benz USA, LLC
Customer Assistance Center
One Mercedes Drive
Montvale, NJ 07645-0350
Maintenance
The Service and Warranty Booklet describes
all the necessary maintenance work which
should be done at regular intervals.
Always have the Service and Warranty
Booklet with you when you bring the vehicle
to an authorized Mercedes-Benz Center. The
service advisor will record every service for
you in the Service and Warranty Booklet.
Roadside Assistance
The Mercedes-Benz Roadside Assistance
Program offers technical help in the event of
abreakdown. Callstothe toll-free Roadside
Assistance Hotline are answered by our
agents 24 hoursaday, 365 daysayear.
1-800-FOR-MERCedes(1-800-367-6372)
(USA)
1-800-387-0100 (Canada)
For additional information,refer to the
Mercedes-Benz Roadside Assistance
Program brochure (USA) or the "Roadside
Assistance" section in the Service and
Warranty booklet (Canada). You will find both
in your vehicle literature portfolio.
Introduction23
Z

distracted from traffic conditions. You could
also lose control of the vehicle. There isarisk
of an accident.
Only operate this equipment when the vehicle
is stationary.
Observe the legal requirements for the
country in which you are driving.Some
jurisdictionsprohibit the driver from using a
mobile phone while drivingavehicle.
If you makeacall while driving,alwaysuse
hands-free mode. Only operate the telephone
when the traffic situation permits. If you are
unsure, pull over toasafe location and stop
before operatingthe telephone.
Bear in mind that ataspeed of only 30 mph
(approximately 50 km/h) the vehicle covers
adistanceof44ft(approximately 14 m) per
second.
Drive sensibly–save fuel
Observe the following tips to save fuel:
XThe tires should always be inflated to the
recommended tire pressure.
XRemove unnecessary loads.
XRemove roof racks whenthey are not
needed.
XWarm up the engine at low engine speeds.
XAvoid frequent acceleration or braking.
XHave all maintenancework carried out as
indicated by the service intervals in the
MaintenanceBooklet or by the service
interval display.
Fuel consumption also increases when
driving in cold weather, in stop-start traffic
and in hilly terrain.
Drinking and driving
GWARNING
Drinking and driving and/or taking drugs and
driving are very dangerous combinations.
Evenasmall amount of alcohol or drugs can
affect your reflexes, perceptions and
judgment.
The possibility ofaserious or even fatal
accident are greatly increased when you drink
or take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or
taking drugs.
Emission control
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
isarisk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation.
Certain engine systems are designed to keep
the level of poisonous components in exhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with
the manufacturer's specifications. For this
reason, only have work on the engine carried
out by qualified and authorized Mercedes-
Benz technicians.
The engine settings must not be changed
under any circumstances. Furthermore, all
specific service work must be carried out at
regular intervals and in accordance with the
Mercedes-Benzservice requirements. Details
can be found in the Maintenance Booklet.
ECO display
Example: ECO display
The ECO display gives you information on how
economical your driving style is. The ECO
display assists you in achieving the optimum
170Driving tips
Driving and parking

You can determinewhether the multifunction
display shows some messages in miles or
kilometers.
XPress the\norbutton on the
steeringwheel to selecttheSett.menu.
XPress theorbutton to select the
Inst. Clustersubmenu.
XPressto confirm.
XPress theorbutton to select the
Display Unit Speed-/Odometer:
function.
You will see the selected setting:kmor
miles.
XPress thebutton to save the setting.
The selected unit of measurement for
distance applies to:
Rthe digital speedometer in theTripmenu
Rodometer and the trip odometer
Rtrip computer
Rcurrent consumption and the range
Rthe navigation instructions in theNavi
menu
Rcruise control
RDISTRONIC PLUS
RASSYST PLUS service interval display
Selecting the permanent display function
You can determine whether the multifunction
displaypermanently shows your speed or the
outside temperature.
XPress the\norbutton on the
steering wheel to select theSett.menu.
XPress theorbutton to select the
Inst. Clustersubmenu.
XPressto confirm.
XPress theorbutton to select the
Permanent Display:function.
You will see the selected settingOutside
TemperatureorSpeedometer [km/h]
(USA)/Speedometer [mph](Canada).
XPress thebutton to save the setting.
iThe speed is shown in km/h (USA)/mph
(Canada).
Lights
Setting the brightness of the instrument
cluster lighting and switches
The lighting in the instrumentcluster,inthe
displays and the controls in the vehicle
interior can be adjusted using the
Brightness Display/Switches:function.
XPress the\norbutton on the
steeringwheel to selecttheSett.menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
XPress theorbutton to select the
Brightness Display/Switches:
function.
You will see the selected setting.
XPressto confirm.
XPress theorbutton to adjust the
brightness to any level fromLevel 1to
Level 5(bright).
XPress theorbutton to save the
setting.
If the light switch is set to\r,or
,the brightness is dependent upon
the brightness of the ambient light.
iThe light sensor in the instrumentcluster
automatically controls the brightnessof
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated.
Switching thedaytime running lamps on/
off
iThis function is not available in Canada.
XPress the\norbutton on the
steeringwheel to selecttheSett.menu.
XPress theorbutton to select the
Lightssubmenu.
XPressto confirm.
230Menus and submenus
On-board computer and displays

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

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

!To ensure the longevity and full
performance of the engine, only premium-
grade unleaded gasoline must be used.
If standard premium-grade unleaded
gasoline is unavailable and unleaded
gasoline ofalower grade is used for
refueling, observe the following
precautions:
Ronly fill the fuel tank to half full with
regularunleaded gasoline and fillthe rest
with premium-gradeunleadedgasoline
as soonaspossible.
Rdo not drive at the maximum speed.
Ravoid sudden acceleration and engine
speeds above 3000 rpm.
Rnever refuel using fuel withaoctane
number lower than 87. Otherwise,
engine failure could occur.
Only refuel using unleadedgasoline with a
minimum octane rating of 91. If gasoline with
alower octane rating is used, engine damage
may occur.
If unleadedgasoline is unavailable and
gasoline of an octane grade lower than 91 is
used, observe the following precautions:
ROnly refuel using enough gasoline to reach
agas station that offers unleadedgasoline.
RDo not under any circumstances refuel
using gasoline withalower octane rating
than 87. Otherwise, immediate engine
damage may occur.
RAvoid sudden acceleration and engine
speeds over 3,000 rpm.
Using mixtures of methanol and ethanol is not
permitted. E10 fuel,amixture of 10% ethanol
and 90% unleadedgasoline, may be used.
You will usually find information aboutthe fuel
grade on the pump. If you cannot find the
label on the pump, ask the staff for
assistance.
iFor further information,consult a
qualified specialist workshop or on the
Internet at http://www.mbusa.com (USA
only).
Information on refueling (Ypage 165).
Additives
!Operating the engine with fuel additives
added later can lead to engine failure. Do
not mix fuel additives with fuel. This does
not include additives for the removal and
prevention of residue buildup. gasoline
must only be mixed with additives
recommended by Mercedes-Benz. Comply
with the instructions for use on the product
label.More information about
recommended additives can be obtained
from any authorized Mercedes-Benz
Center.
Mercedes-Benz recommends that you use
branded fuels that have additives.
Do not mix fuel additives with fuel. This
causes unnecessary costsand could lead to
engine failure.
Carbon deposits may form if the availability
of gasoline with relevant additives is
insufficient (in certain regions). In this case,
Mercedes-Benz recommends additives
approved for use in Mercedes-Benz vehicles;
see http://bevo.mercedes-benz.com.
Engine oil
General notes
!Never use engine oil or an oil filter of a
specification other than is necessary to
fulfill the prescribed service intervals. Do
not change the engine oil or oil filter in
order to achieve longer replacement
intervals than those prescribed. You could
otherwise cause engine damage or damage
to the exhaust gas aftertreatment.
Follow the instructions in the service
interval display regarding the oil change.
Otherwise, you may damage the engine and
the exhaust gas aftertreatment.
Comply with the important safety notes for
service products when handling engine oil
(Ypage 373).
Service products and filling capacities375
Technical data
Z