ECU MERCEDES-BENZ CLA 2019 Workshop Manual

XMove the driver's or front-passenger seatforward if necessary.
XFold seat backrestCback until it engages.Red lock status indicatorDis no longer visi-ble.
XAdjust the head restraints if necessary(Ypage 95).
XMove the driver's or front-passenger seatback if necessary.
Securing loads
Observe the following notes on securing loads:
RObserve the loading guidelines (Ypage 239).
RSecure the load using the cargo tie-downrings.
RDistribute the load on the cargo tie-downrings evenly.
RDo not use elastic straps or nets to secure aload, as these are only intended as an anti-slipprotection for light loads.
RDo not route tie-downs across sharp edges orcorners.
RPad sharp edges for protection.
CCargo tie-down rings
Stowage well under the trunk floor
Under the trunk floor you can find a bracket forTIREFIT and the vehicle tool kit, etc.
XTo open:pull handleCup.
XHook handleCinto rain troughD.
To enlarge the trunk you can remove the trunkfloor.
XTo remove:lift the trunk floor almost to raintroughDand pull it out.
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Stowage and features
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Do not touch the hot heating elements of the
cup holder. Always make sure that children
cannot access the hot heating elements of the
cup holder. Never leave children unsuper-
vised in the vehicle.
GWARNING
If objects in the passenger compartment are
stowed incorrectly, they can slide or be
thrown around and hit vehicle occupants. In
addition, cup holders, open stowage spaces
and mobile phone brackets cannot always
retain all objects they contain. There is a risk
of injury, particularly in the event of sudden
braking or a sudden change in direction.
RAlways stow objects so that they cannot be
thrown around in such situations.
RAlways make sure that objects do not pro-
trude from stowage spaces, parcel nets or
stowage nets.
RClose the lockable stowage spaces before
starting a journey.
RAlways stow and secure heavy, hard, poin-
ted, sharp-edged, fragile or bulky objects in
the trunk.
!Only use the cup holders for containers ofthe right size and which have lids. The drinkscould otherwise spill.
Observe the loading guidelines (Ypage 239).
The stowage compartments in the doors providespace for bottles:
Rfront: capacity up to 34 fl. oz. (1.0l)
Rrear: capacity up to 17 fl. oz. (0.5 l)
Cup holder in the front center console
CCup holder
The cup holder and the rubber mat underneathcan be removed for cleaning. Clean them withclean, lukewarm water only.
XTo remove:carefully pull in upper sections ofcup holderCon the driver's and front-passenger sides until they release.
XLift the cup holder upwardsDuntil it can beremoved.
XTo install:insert cup holder into lateralcurved sectionsDin the stowage compart-ment. Insert the cup holder so that the wedge
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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
Z

Mercedes-Benz Customer Assistance Centerat 1-800-FOR-MERCedes (1-800-367-6372)or 1-866-990-9007
XYou will be asked for your password.
XReturn to your vehicle at the time agreed uponwith the Mercedes-Benz Customer Assis-tance Center.
Alternatively, the vehicle can be opened via:
Rthe Internet, under the "Owners Online" sec-tion
Rtelephone applications (e.g. for iPhone®,Android™)
To do this, you will need your identification num-ber and password.
Vehicle remote closing
The valet locking feature can be used when youhave forgotten to lock the vehicle and you are nolonger nearby.
The vehicle can then be locked by the Mercedes-Benz Customer Assistance Center.
The vehicle can be immediately locked remotelyup to four days after the ignition was lastswitched off. After this time, the valet lockingmay be delayed by 15 to 60 minutes. After30 days the vehicle can no longer be lockedremotely.
The valet locking feature is available if the rele-vant mobile phone network is available and adata connection is possible.
XContact the following service hotlines:
Mercedes-Benz Customer Assistance Centerat 1-800-FOR-MERCedes (1-800-367-6372)or 1-866-990-9007You will be asked for your password.
The next time you are inside the vehicle and youswitch on the ignition, theDoors LockedDoors LockedRemotelyRemotelymessage appears in the multifunctiondisplay.
Alternatively, the vehicle can be locked via:
Rthe Internet, under the "Owners Online" sec-tion
Rtelephone applications (e.g. for iPhone®,Android™)
To do this, you will need your identification num-ber and password.
Stolen vehicle recovery service
If your vehicle has been stolen:
XNotify the police.The police will issue a numbered incidentreport.
XThis number will be forwarded to theMercedes-Benz Customer Assistance Centertogether with your PIN.The Mercedes-Benz Customer AssistanceCenter then tries to locate the system. TheMercedes-Benz Customer Assistance Centercontacts you and the local law enforcementagency if the vehicle is located.
However, only the law enforcement agency isinformed of the location of the vehicle.
If the anti-theft alarm system is activated forlonger than 30 seconds, Mercedes me connectautomatically notifies the Mercedes-Benz Cus-tomer Assistance Center.
Vehicle Health Check
With the Vehicle Health Check, the CustomerAssistance Center can provide improved sup-port for problems with your vehicle. During anexisting call, vehicle data is transferred to theCustomer Assistance Center.
The customer service representative can usethe received data to decide what kind of assis-tance is required. You are then, for example,guided to the nearest Mercedes-Benz ServiceCenter or a recovery vehicle is called.
If vehicle data needs to be transferred during anMB Info call or a Roadside Assistance call, this isinitiated by the Customer Assistance Center.
TheRoadside Assistance ConnectedRoadside Assistance Connectedmes-sage appears in the display. If the Vehicle HealthCheck can be started, theRequestRequestforforVehi‐Vehi‐cle Diagnostics Received Start vehi‐cle Diagnostics Received Start vehi‐cle diagnostics?cle diagnostics?message appears in thedisplay.
XPress theYesYesbutton to confirm the message.
XIf theVehicle Diagnostics PleaseVehicle Diagnostics PleaseStart IgnitionStart Ignitionmessage appears: turn theSmartKey to positionHin the ignition lock(Ypage 123).
XIf thePlease follow the instructionsPlease follow the instructionsreceivedreceivedbybyphonephoneandandmovemoveyouryourvehi‐vehi‐cle to a safe position.cle to a safe position.messageappears: please follow the instructions
Features253
Stowage and features
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South America
Floormats
GWARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk 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
sufficient clearance for the pedals. Do not use
loose floormats and do not place floormats on
top of one another.
XSlide the seat back.
XTo install:place the floormat in the footwell.
XPress safety catch knobsConto retain-ersD.
XTo remove:pull the floormat off retainersD.
XRemove the floormat.
Features259
Stowage and features
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Example: engine oil cap
XTurn capCcounter-clockwise and remove it.
XAdd engine oil.If the oil level is at or below the MIN mark onthe oil dipstick, add 1.1 US qt (1.0 liter) ofengine oil.
XReplace capCon the filler neck and turnclockwise.Ensure that the cap locks into place securely.
XCheck the oil level again with the oil dipstick(Ypage 261).
Further information on engine oil (Ypage 322).
Checking and adding other service
products
Checking coolant level
GWARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is a risk of injury.
Let the engine cool down before you open the
cap. Wear protective gloves and protective
eyewear when opening. Open the cap slowly
to release pressure.
!The coolant level must only be checked andcorrected when the engine has cooled down(coolant temperature under 104 ‡ (40 †).Checking the coolant level when the coolanttemperature is over 104‡(40 †) can lead todamage to the engine or the engine coolingsystem.
XPark the vehicle on a level surface.
Only check the coolant level when the vehicleis on a level surface and the engine has cooleddown.
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 123).
XCheck the coolant temperature display in theinstrument cluster.The coolant temperature must be below104 ‡ (40 †).
XTurn the SmartKey to positionZ(Ypage 123) in the ignition lock .
XSlowly turn capCcounter-clockwise and torelieve excess pressure.
XTurn capCfurther counter-clockwise andremove it.If the coolant is at the level of marker bar

Cleaning wiper blades
GWARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
!Only fold the windshield wipers away fromthe windshield when vertical. Otherwise, youwill damage the hood.
!Do not pull the wiper blade. Otherwise, thewiper blade could be damaged.
!Do not clean wiper blades too often and donot rub them too hard. Otherwise, the graph-ite coating could be damaged. This couldcause wiper noise.
!Hold the wiper arm securely when foldingback. The windshield could be damaged if thewiper arm smacks against it suddenly.
XFold the windshield wiper arms away from thewindshield.
XCarefully clean the wiper blades with a dampcloth.
XFold the windshield wiper arms back againbefore switching on the ignition.
Cleaning the exterior lighting
!Only use cleaning agents or cleaning clothswhich are suitable for plastic light lenses.Unsuitable cleaning agents or cleaning clothscould scratch or damage the plastic light len-ses.
XClean the plastic lenses of the exterior lightswith a wet sponge and a mild cleaning agent,e.g. Mercedes-Benz car shampoo or cleaningcloths.
Cleaning the mirror turn signals
!Only use cleaning agents or cleaning clothsthat are suitable for plastic lenses. Unsuitablecleaning agents or cleaning cloths couldscratch or damage the plastic lenses of themirror turn signals.
XClean the plastic lenses of the mirror turn sig-nals in the exterior mirror housing using a wetsponge and mild cleaning agent, e.g.Mercedes-Benz car shampoo or cleaningcloths.
Cleaning the sensors
!If you clean the sensors with a powerwasher, make sure that you keep a distanceof at least 11.8 in(30 cm) between the vehicleand the power washer nozzle. Informationabout the correct distance is available fromthe equipment manufacturer.
XClean sensorsCof the driving systems withwater, car shampoo and a soft cloth.
Cleaning the rear view camera
!Do not clean the camera lens and the areaaround the rear view camera with a powerwasher.
Care269
Maintenance and care
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plenty of clean water and seek medical atten-
tion.
HEnvironmental 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 a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
!Have the battery regularly checked at aqualified specialist workshop.
Comply with the service intervals in the Main-tenance Booklet, or contact a qualified spe-cialist workshop for more information.
!You should have all work involving the bat-tery carried out at a qualified specialist work-shop. In the exceptional case that it is neces-sary for you to disconnect the battery your-self, make sure that:
Rswitch off the engine and remove theSmartKey. On vehicles with KEYLESS-GO,make sure that the ignition is switched off.Check that all the indicator lamps in theinstrument cluster are off. Otherwise, elec-tronic components, such as the alternator,may be damaged.
Ryou first remove the negative terminalclamp and then the positive terminalclamp. Never swap the terminal clamps.Otherwise, the vehicle's electronic systemmay be damaged.
Rin vehicles with automatic transmission,the transmission is locked in position]after the battery is disconnected. The vehi-cle is secured against rolling away. You canthen no longer move the vehicle.
The battery and the cover of the positive ter-minal clamp must be installed securely duringoperation.
Comply with safety precautions and take pro-tective measures when handling batteries.
Risk of explosion.
Fire, open flames and smoking areprohibited when handling the bat-tery. Avoid creating sparks.
Battery acid is caustic. Avoid contactwith skin, eyes or clothing.
Wear suitable protective clothing,especially gloves, apron and face-guard.
Rinse any acid spills immediatelywith clear water. Contact a physicianif necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
For safety reasons, Mercedes-Benz recom-mends that you only use batteries which havebeen tested and approved for your vehicle byMercedes-Benz. These batteries provideincreased impact protection to prevent vehicleoccupants from suffering acid burns should thebattery be damaged in the event of an accident.
In order for the battery to achieve the maximumpossible service life, it must always be suffi-ciently charged.
Like other batteries, the vehicle battery maydischarge over time if you do not use the vehicle.In this case, have the battery disconnected at aqualified specialist workshop. You can alsocharge the battery with a charger recommendedby Mercedes-Benz. Contact a qualified special-ist workshop for further information.
Have the battery condition of charge checkedmore frequently if you use the vehicle mainly forshort trips or if you leave it standing idle for alengthy period. Consult a qualified specialistworkshop if you wish to leave your vehicleparked for a long period of time.
280Battery (vehicle)
Breakdown assistance

If the indicator/warning lamps do not light up in the instrument cluster at low temperatures, it is verylikely that the discharged battery has frozen. In this case you may neither jump-start the vehicle norcharge the battery. Let the battery thaw first. The service life of a thawed-out battery may be shorter.The starting characteristics can be impaired, particularly at low temperatures. Have the thawed-outbattery checked at a qualified specialist workshop.
Do not start the vehicle using a rapid charging device. If your vehicle's battery is discharged, theengine can be jump-started from another vehicle or from a second battery using jumper cables.Observe the following points:
RThe battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, jump-start the vehicle using a second battery or a jump-starting device.
RYou may only jump-start the vehicle when the engine and exhaust system are cold.
RDo not start the engine if the battery is frozen. Let the battery thaw first.
ROnly jump-start from batteries with a 12 V voltage rating.
ROnly use jumper cables that are not damaged and have a sufficient cross-section and insulatedterminal clamps.
RMake sure that the two vehicles do not touch.
Make sure that:
RThe jumper cables are not damaged.
RNon-insulated parts of the terminal clamps do not come into contact with other metal parts whilethe jumper cables are connected to the battery.
RThe jumper cables cannot come into contact with parts that can move when the engine is running,such as the V-belt pulley or the fan.
XSecure the vehicle by applying the electric parking brake.
XShift the transmission to position].
XTurn the SmartKey to positionZin the ignition lock and remove it.
XSwitch off all electrical consumers, e.g. rear window defroster, lighting, etc.
XOpen the hood.
Jump-starting283
Breakdown assistance
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!When Active Brake Assist, Active DistanceAssist DISTRONIC or the HOLD function isactivated, the vehicle brakes automatically incertain situations.
To avoid damage to the vehicle, deactivatethese systems in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
!Make sure that the electric parking brake isreleased. If the electric parking brake is faulty,visit a qualified specialist workshop.
!Only secure the tow rope or tow bar at thetowing eyes. Otherwise, the vehicle could bedamaged.
!Do not use the towing eyes for recovery pur-poses as this could damage the vehicle. If indoubt, recover the vehicle with a crane.
!When towing, pull away slowly andsmoothly. If the tractive power is too high, thevehicles could be damaged.
!The vehicle can be towed a maximum of30 miles (50km). The towing speed of 30 mph(50km/h) must not be exceeded.
If the vehicle has to be towed more than30 miles (50km), the front axle must be raisedor the entire vehicle raised and transported.
!Do not tow with sling-type equipment. Thiscould damage the vehicle.
!When towing away vehicles with KEYLESS-GO, use the key instead of the Start/Stopbutton. The automatic transmission may oth-erwise shift to position]when you open thedriver's or front-passenger door, which coulddamage the transmission.
!Vehicles with automatic transmission mustnot be started by tow-starting. This could oth-erwise damage the transmission.
It is better to have the vehicle transported thanto have it towed away.
If the vehicle can no longer be driven because ofan accident or breakdown, you have the follow-ing options:
RTransporting the vehicle.
As a rule, you should have the vehicle trans-ported.
RTowing the vehicle with a tow rope or tow bar.
Only tow the vehicle in exceptional cases.
The battery must be connected and charged.Otherwise, you:
Rcannot turn the SmartKey to positionHinthe ignition lock.
Rcannot release the electric parking brake.
Rcannot shift the transmission to position\\.
The function of the electric parking brake andthe parking lock is dependent on the on-boardvoltage.
If the on-board voltage is low or if there is a sys-tem malfunction:
Rthe electric parking brake may not be appliedin certain circumstances, or
Rit may no longer be possible to shift the trans-mission to position]
Switch off non-essential consumers, e.g. theradio.
Deactivate the automatic locking feature beforethe vehicle is towed (Ypage 189). You couldotherwise be locked out when pushing or towingthe vehicle.
Installing/removing the towing eye
Installing the towing eye
The brackets for the screw-in towing eye arelocated in the bumpers. They are at the rear andat the front, under coversC.
XRemove the towing eye from the stowagespace.
Towing and tow-starting285
Breakdown assistance
Z