2019 MERCEDES-BENZ CLA air condition

Safety systems
Warning/indicatorlamp
QQSignal type
Possible causes/consequences andPPSolutions
'MQ'(USA only),M(Canada only): the red brake system warning lamp is litwhile the engine is running. A warning tone also sounds.
GWARNING
The brake boosting effect is malfunctioning and the braking characteristics may beaffected.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying attention to roadand traffic conditions. Do not continue driving under any circumstances.
XSecure the vehicle against rolling away (Ypage 142).
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction display.
'MQ'(USA only),M(Canada only): the red brake system warning lamp is litwhile the engine is running. A warning tone also sounds.
There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying attention to roadand traffic conditions. Do not continue driving under any circumstances.
XSecure the vehicle against rolling away (Ypage 142).
XDo not add brake fluid. Adding more will not correct the malfunction.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction display.
Warning and indicator lamps in the instrument cluster221
On-board computer and displays
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Tires
Warning/indicatorlamp
QQSignal type
Possible causes/consequences andPPSolutions
wQThe yellow tire pressure monitor warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitor has detected a loss of pressure in at least one of the tires.
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed increase.
Rthey may wear excessively and/or unevenly, which may greatly impair tire trac-tion.
Rthe driving characteristics, as well as steering and braking, may be greatlyimpaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking maneuvers. Payattention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 142).
XObserve the additional display messages in the multifunction display.
XCheck the tires and, if necessary, follow the instructions for a flat tire(Ypage 274).
XCheck the tire pressure (Ypage 297).
XIf necessary, correct the tire pressure.
wQThe yellow tire pressure monitor warning lamp (pressure loss/malfunction)flashes for approximately one minute and then remains lit.
The tire pressure monitor is faulty.
GWARNING
The system is possibly unable to recognize or register low tire pressure.
There is a risk of an accident.
XObserve the additional display messages in the multifunction display.
XVisit a qualified specialist workshop immediately.
230Warning and indicator lamps in the instrument cluster
On-board computer and displays

General notes
The multimedia system section in this Opera-tor's Manual describes the basic principles foroperation. More information can be found in theDigital Operator's Manual.
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle. There is a risk of an acci-
dent.
Only operate this equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for thecountry in which you are currently driving whenoperating the multimedia system.
The multimedia system calculates the route tothe destination without taking the following intoaccount, for example:
Rtraffic lights
Rstop and yield signs
Rparking or stopping restrictions
Rroad narrowing
Rother road and traffic rules and regulations
The multimedia system may give incorrect nav-igation recommendations if the actual street/traffic situation does not correspond with thedigital map's data.
For example:
Ra diverted route
Rthe road layout or the direction of a one-waystreet has been changed
For this reason, you must always observe roadand traffic rules and regulations during yourjourney. Road and traffic rules and regulationsalways have priority over multimedia systemdriving recommendations.
Navigation announcements are intended todirect you while driving without diverting yourattention from the road and driving.
Please always use this feature instead of con-sulting the map display for directions. Lookingat the icons or map display can distract you fromtraffic conditions and driving, and increase therisk of an accident.
This equipment complies with FCC radiationexposure limits set forth for uncontrolled equip-ment and meets the FCC radio frequency (RF)Exposure Guidelines in Supplement C to OET65.
This equipment has very low levels of RF energythat is deemed to comply without maximumpermissive exposure evaluation (MPE). How-ever, it is recommended to install it at a distanceof at least 8 inches (approx. 20 cm) between theradiation source and a person's body (notincluding limbs such as hands, wrists, feet andlegs).
GWARNING
Modifications to electronic components, their
software as well as wiring can impair their
function and/or the function of other net-
worked components. In particular, systems
relevant to safety could also be affected. As a
result, these may no longer function as inten-
ded and/or jeopardize the operating safety of
the vehicle. There is an increased risk of an
accident and injury.
Never tamper with the wiring as well as elec-
tronic components or their software. You
should have all work to electrical and elec-
tronic equipment carried out at a qualified
specialist workshop.
Function restrictions
For safety reasons, some functions are restric-ted or unavailable while the vehicle is in motion.You will notice this, for example, because eitheryou will not be able to select certain menu itemsor a message will appear to this effect.
Function restrictions231
Multimedia system
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Favorites button
You can assign predefined functions using the}favorites button and call them up by press-ing the button (Ypage 233).
Favorites
Calling up and exiting favorites
XTo call up:press the}button on the con-troller.
XSelect a favorite, e.g.VehicleVehicle.The favorites are displayed.
XTo exit:press the}button again.
Adding favorites
Adding predefined favorites
XPress the}button.
XCOMAND:slide6the controller.
XAudio 20:slide5or6the controller.The menu bar is displayed.
XSelectReassignReassign.The categories are displayed.
XSelect a category.The favorites are displayed.
XSelect a favorite.
XCOMAND:to add the favorite to the desiredposition, turn and press the controller.If a favorite has already been added at thisposition, it will be overwritten.
XAudio 20:to add the favorite to the desiredposition, turn, slide5or6and press thecontroller.If a favorite has already been added at thisposition, it will be overwritten.
Adding your own favorites
You can add climate control as a favorite, forexample.
XSelectVehicleVehicle{Vehicle SettingsVehicle Settings.
XPress and hold the}button until thefavorites are displayed.
XAdd a favorite to the desired position.If a favorite has already been added at thisposition, it will be overwritten.
Navigation mode
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle. There is a risk of an acci-
dent.
Only operate this equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for thecountry in which you are currently driving whenoperating the navigation system.
General notes
Among other things, correct functioning of thenavigation system depends on GPS reception. Incertain situations, GPS reception may beimpaired, there may be interference or theremay be no reception at all, e.g. in tunnels orparking garages.
Audio 20 is equipped with Garmin®MAP PILOT(see the manufacturer's operating instructions).
The Garmin®MAP PILOT operating instructionsare stored on the SD card as a PDF file. The SDcard box contains a quick guide.
The following descriptions apply to navigationwith COMAND. Further information can befound in the Digital Operator's Manual.
Selecting a route type and route options
Multimedia system:
XSelectNaviNavi{NavigationNavigation.The map shows the vehicle's current position.
XSlide6the controller.
XSelectOptionsOptions{Route SettingsRoute Settings.
Notes for route types:
REco RouteEco Route
RDynamic Traffic RouteDynamic Traffic Route
Operating system233
Multimedia system
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Have the system checked at the nearestMercedes-Benz Service Center or contact thefollowing service hotlines:
Mercedes-Benz Customer Assistance Center at1-800-FOR-MERCedes (1-800-367-6372) or1-866-990-9007
Emergency call
Important safety notes
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 vehi-
cle, e.g. if there is a fire after an accident
Rthe vehicle is on a dangerous section of
road
Rthe vehicle is not visible or cannot easily be
seen by other road users, particularly when
dark or in poor visibility conditions
There is a risk of an accident and injury.
Leave the vehicle immediately in this or simi-
lar situations as soon as it is safe to do so.
Move to a safe location along with other vehi-
cle occupants. In such situations, secure the
vehicle in accordance with national regula-
tions, e. g. with a warning triangle.
General notes
Observe the notes on system activation(Ypage 248).
An emergency call is dialed automatically if anair bag or Emergency Tensioning Device is trig-gered. You cannot end an automatically trig-gered emergency call yourself.
An emergency call can also be initiated man-ually.
As soon as the emergency call has been initi-ated, the indicator lamp in the SOS buttonflashes. TheConnecting CallConnecting Callmessageappears in the multifunction display.
The audio output is muted.
Once the connection has been made, theCallCallConnectedConnectedmessage appears in the multifunc-tion display.
All important information on the emergency istransmitted, for example:
RCurrent location of the vehicle (as determinedby the GPS system)
RVehicle identification number
RInformation on the severity of the accident
Shortly after the emergency call has been initi-ated, a voice connection is automatically estab-lished between the Customer Assistance Centerand the vehicle occupants.
RIf the vehicle occupants are responsive, theMercedes-Benz Customer Assistance Centerattempts to get more information on theemergency.
RIf there is no response from the vehicle occu-pants, an ambulance is immediately sent tothe vehicle
If no voice connection can be established to theMercedes-Benz Customer Assistance Center,the system has been unable to initiate an emer-gency call.
This can occur, for example, if the relevantmobile phone network is not available. The indi-cator lamp in the SOS button flashes continu-ously.
TheCall FailedCall Failedmessage appears in the mul-tifunction display and must be confirmed.
In this case, summon assistance by othermeans.
Making an emergency call
XTo initiate an emergency call manually:press coverCbriefly to open.
XPress and hold the SOS button for at least onesecondD.The indicator lamp in SOS buttonDflashesuntil the emergency call is concluded.
XWait for a voice connection to the Mercedes-Benz Customer Assistance Center.
Features249
Sto wage an d features
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Information about Service
Resetting the ASSYST PLUS service
interval display
!If the ASSYST PLUS service interval displayhas been inadvertently reset, this setting canbe corrected at a qualified specialist work-shop.
Have service work carried out as described inthe Maintenance Booklet. This may otherwiselead to increased wear and damage to themajor assemblies or the vehicle.
A qualified specialist workshop, e.g. an author-ized Mercedes-Benz Center, will reset theASSYST PLUS service interval display after theservice work has been carried out. You can alsoobtain further information on maintenancework, for example.
Special service requirements
The specified maintenance interval takes onlythe normal operation of the vehicle intoaccount. Under arduous operating conditions orincreased load on the vehicle, maintenancework must be carried out more frequently, forexample:
Rregular city driving with frequent intermediatestops
Rif the vehicle is primarily used to travel shortdistances
Ruse in mountainous terrain or on poor roadsurfaces
Rif the engine is often left idling for long periods
Rin particularly dusty conditions, or if air-recir-culation mode is frequently used
In these or similar operating conditions, havethe interior filter, engine air cleaner, engine oiland oil filter, for example, changed more fre-quently. Under arduous operating conditions,the tires must be checked more often. Furtherinformation can be obtained at a qualified spe-cialist workshop, e.g. an authorized Mercedes-Benz Center.
Driving abroad
An extensive Mercedes-Benz Service network isalso available in other countries. You can obtainfurther information from any authorizedMercedes-Benz Center.
Care
General notes
HEnvironmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner.
!When cleaning your car, do not use:
Rdry, coarse or hard cloths
Rabrasive cleaning agents
Rsolvents
Rcleaning agents containing solvents
Do not scrub.
Do not touch the surfaces and films with hardobjects, e.g. rings or ice scrapers. Otherwise,you may scratch or damage the surfaces andfilms.
!Do not park your vehicle for a long period oftime directly after cleaning, particularly aftercleaning the wheel rim with wheel cleaner.Wheel cleaner can lead to the increased cor-rosion of the brake discs and pads. Therefore,drive for a few minutes after cleaning. Byheating up the brakes, the brake discs andpads dry. The vehicle can then be parked for along period of time.
Regular care of your vehicle is a condition forretaining the quality in the long term.
Use care products and cleaning agents recom-mended and approved by Mercedes-Benz.
Washing the vehicle and cleaning the
paintwork
Automatic car wash
GWARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
!When Active Distance Assist DISTRONIC orthe HOLD function is activated, the vehiclebrakes automatically in certain situations.
Care265
Maintenance and care
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RPlug-type couplings
RLight bulbs
RSeals
RTrim elements
RVentilation slots
Damaged seals or electrical components canlead to leaks or failures.
Cleaning the paintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similar items
to painted surfaces. You could otherwisedamage the paintwork.
Scratches, corrosive deposits, areas affected bycorrosion and damage caused by inadequatecare cannot always be completely repaired. Insuch cases, visit a qualified specialist workshop.
XRemove dirt immediately, where possible,while avoiding rubbing too hard.
XSoak insect remains with insect remover andrinse off the treated areas afterwards.
XSoak bird droppings with water and rinse offthe treated areas afterwards.
XRemove tree resin, oils, fuels and greases byrubbing gently with a cloth soaked in petro-leum ether or lighter fluid
XRemove coolant and brake fluid with a moistcloth and clear water.
XUse tar remover to remove tar stains.
XUse silicone remover to remove wax.
If water no longer forms "beads" on the paintsurface, use the paint care products recommen-ded and approved by Mercedes-Benz. This is thecase approximately every three to five months,depending on the climate conditions and thecare product used.
If dirt has penetrated the paint surface or if thepaint has become dull, the paint cleaner recom-mended and approved by Mercedes-Benzshould be used.
Do not use these care products in the sun or onthe hood while the hood is hot.
XUse a suitable touch-up stick, e.g. MB Touch-Up Stick, to repair slight damage to the paint-work quickly and provisionally.
Matte finish care
!Never polish the vehicle or the light alloywheels. Polishing causes the finish to shine.
!The following can give the paint a glossyappearance and thus reduce the matt effect:
RRubbing hard with unsuitable agents
RWashing the vehicle in direct sunlight
!Never use paint cleaner, buffing or polishingproducts, or gloss preserver, e.g. wax, for thepurpose of paintwork care. These productsare only suitable for high-gloss surfaces. Theiruse on vehicles with matte paintwork leads toconsiderable surface damage or, more spe-cifically, to shiny, spotted areas.
Always have paintwork repairs carried out at aqualified specialist workshop.
!Only use automatic car washes which cor-respond to the latest technological stand-ards. Never use wash programs which finishby treating the vehicle with hot wax.
Observe these notes if your vehicle has a clearmatte finish. This will help you to avoid damageto the paintwork due to incorrect treatment.
These notes also apply to light alloy wheels witha clear matte finish.
Use only insect remover and car shampoo fromthe range of care products approved byMercedes-Benz.
Cleaning the decorative film
!The following may have an effect on the ser-vice life and color of decorative film:
Rsunlight
Rtemperature, e.g. hot-air fan
Rweather conditions
Rstone impacts and dirt
Rchemical cleaning agents
Rgreasy substances
!Do not use any types of polish on matt dec-orative film. Polishing surfaces covered withfilm gives it a shiny finish.
!Do not treat matt or structured decorativefilm with wax. This may lead to marks thatcannot be removed.
Observe the notes in the section on the care andtreatment of matte paintwork (Ypage 267),these notes also apply to matte decorative film.
Care267
Maintenance and care
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When you have mounted the M+S tires:
XCheck the tire pressures (Ypage 293).
XRestart the tire pressure monitor (USA only)(Ypage 300).
XRestart the tire pressure loss warning system(Canada) (Ypage 297)
Snow chains
GWARNING
If snow chains are mounted on the rear
wheels, the snow chains could cause abrasion
to the vehicle body or to chassis components.
This could cause damage to the vehicle or the
tires. There is a risk of an accident.
To avoid hazardous situations:
Rnever mount snow chains on the rear
wheels
Ronly mount snow chains in pairs on the
front wheels.
!On some tire sizes there is not enough spacefor snow chains. To avoid damage to the vehi-cle or tires, observe the "Wheel and tire com-binations" section under "Tires and wheels".
For safety reasons, Mercedes-Benz recom-mends that you only use snow chains that havebeen specially approved for your vehicle byMercedes-Benz, or are of a correspondingstandard of quality. For more information,please contact a qualified specialist workshop.
If you intend to mount snow chains, please bearthe following points in mind:
RSnow chains may not be mounted on allwheel/tire combinations. Permissible wheel-tire combinations (Ypage 315).
ROnly use snow chains when driving on roadscompletely covered by snow. Remove thesnow chains as soon as possible when youcome to a road that is not snow-covered.
RLocal regulations may restrict the use of snowchains. Observe the appropriate regulations ifyou wish to mount snow chains.
RDo not exceed the maximum permissiblespeed of 30mph (50 km/h).
RIf snow chains are installed, you cannot useActive Parking Assist (Ypage 167).
You may wish to deactivate ESP®when pullingaway with snow chains installed . This allows thewheels to spin in a controlled manner, achievingincreased propulsive force (cutting action).
RDeactivate ESP®(all vehicles exceptMercedes-AMG vehicles) (Ypage 65)
RDeactivate ESP®(Mercedes-AMG vehicles)(Ypage 66)
Information about driving with an emergencyspare wheel (Ypage 315).
Tire pressure
Tire pressure specifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning a long journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
iThe data on the Tire and Loading Informa-tion placard and tire pressure table shownhere are examples. Tire pressure specifica-tions are vehicle-specific and may deviatefrom the data shown here. The tire pressurespecifications that are valid for your vehiclecan be found on the Tire and Loading Infor-mation placard and tire pressure table on thevehicle.
Tire pressure293
Wheels and tires
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