2019 MERCEDES-BENZ CLA key

Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could
be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
!To avoid damaging the wiper blades, makesure that you touch only the wiper arm of thewiper.
!Never open the hood if a windshield wiperarm has been folded away from the wind-shield.
Never fold a windshield wiper arm without awiper blade back onto the windshield.
Hold the windshield wiper arm firmly whenyou change the wiper blade. If you release thewindshield wiper arm without a wiper bladeand it falls onto the windshield, the windshieldmay be damaged by the force of the impact.
Mercedes-Benz recommends that you havethe wiper blades changed at a qualified spe-cialist workshop.
Changing the windshield wiper blades
Removing the wiper blades
XVehicles without KEYLESS-GO or KEY-LESS-GO start function:remove the Smart-Key from the ignition lock.
XVehicles with KEYLESS-GO or KEYLESS-GO start function:switch off the engine.
XFold the wiper arm away from the windshield.
XHold on to the wiper arm with one hand. Withthe other hand, turn wiper blade in directionof arrowCaway from the wiper arm as far asit will go.
XSlide catchDin the direction of arrow

Overview of climate control systems
General notes
Observe the settings recommended on the fol-lowing pages. The windows could otherwise fogup.
To prevent the windows from fogging up:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only briefly
Rswitch on the cooling with air dehumidifica-tion function
Rswitch on the defrost windshield functionbriefly, if required
The air-conditioning system or dual-zone auto-matic climate control regulates the temperatureand the humidity of the vehicle interior and fil-ters undesirable substances from the air.
The air-conditioning system or dual-zone auto-matic climate control can only be operatedwhen the engine is running. Optimum operationis only achieved with the side windows and pan-orama roof with power tilt/sliding panel closed.
If you start the engine using your smartphone,the last selected climate control setting is reac-tivated (Ypage 83).
The residual heat function can only be activatedor deactivated with the ignition switched off(Ypage 120).
Always keep the ventilation flaps behind theside trim panel in the cargo compartment clear(Ypage 107). Otherwise the vehicle will not beventilated correctly.
iVentilate the vehicle for a brief period duringwarm weather, e.g. using the convenienceopening feature (Ypage 83). This will speedup the cooling process and the desired inte-rior temperature will be reached morequickly.
iThe integrated filter filters out most parti-cles of dust and soot and completely filtersout pollen. It also reduces gaseous pollutantsand odors. A clogged filter reduces theamount of air supplied to the vehicle interior.For this reason, you should always observethe interval for replacing the filter, which isspecified in the Maintenance Booklet. As itdepends on environmental conditions, e.g.heavy air pollution, the interval may beshorter than stated in the Maintenance Book-let.
iIt is possible that under certain circumstan-ces the residual heat function may be activa-ted automatically an hour after the SmartKeyhas been removed in order to dry the auto-matic climate control. The vehicle is then ven-tilated for 30 minutes.
Overview of climate control systems111
Climate control

ual. You will see the current settings of thevarious climate control functions.
DYNAMIC SELECT button (except
Mercedes-AMG vehicles)
You can choose between various drive programswith the DYNAMIC SELECT button(Ypage 129).
If you have selected drive programE:
Rwhen heating, the electrical heater booster isdeactivated and in the warming-up phaseheat output is reduced
Rthe rear window defroster running time isreduced
Depending on the configuration, climate set-tings may also be influenced in the drive pro-gramI.
If you have selected drive programCorS, cli-mate settings are not influenced.
ECO start/stop function
During automatic engine switch-off, the climatecontrol system only operates at a reduced capa-city. If you require the full climate control output,you can switch off the ECO start/stop functionby pressing the ECO button (Ypage 128).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
General notes
When the climate control is switched off, the airsupply and air circulation are also switched off.The windows could fog up. Therefore, switch offclimate control only briefly
Air-conditioning system
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 123).
XTo switch on:turn control

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andPPSolutions
The indicator lamp in theZbutton flashesthree times or remainsoff. The "Cooling with airdehumidification" func-tion cannot be switchedon.
Cooling with air dehumidification has been deactivated due to a mal-function.
XVisit a qualified specialist workshop.
Setting climate control to automatic
General notes
The automatic climate control function is onlyavailable in conjunction with dual-zone auto-matic climate control.
In automatic mode, the set temperature is main-tained automatically at a constant level. Thesystem automatically regulates the temperatureof the dispensed air, the airflow and the air dis-tribution.
The "Cooling with air dehumidification" functionis activated automatically in automatic mode.
Setting climate control to automatic
XTurn the SmartKey to positionDin the igni-tion lock (Ypage 123).
XSet the desired temperature.
XTo activate:press theXbutton.The indicator lamp in theXbutton lightsup. Automatic air distribution and airflow areactivated.
XTo switch to manual mode:press theOorJbutton.
or
XPress the

iYou can also activate several air distributionsettings simultaneously. To do this, pressmultiple air distribution buttons. The air isthen directed through various vents.
iRegardless of the air distribution setting,airflow is always directed through the side airvents. The side air vents can only be closed ifthe adjusters are turned clockwise until theyengage.
Setting the air distribution
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 123).
XPress one or more of the

If the battery voltage is too low, the rear windowdefroster may switch off.Activating/deactivating
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 123).
XPress thelbutton.The indicator lamp in thelbutton lightsup or goes out.
Problems with the rear window defroster
ProblemPossible causes/consequences andPPSolutions
The rear windowdefroster has deactiva-ted prematurely or can-not be activated.
The battery has not been sufficiently charged.
XSwitch off any consumers that are not required, e.g. reading lamps,interior lighting or the seat heating.When the battery is sufficiently charged, the rear window defrostercan be activated again.
Switching air-recirculation mode
on/off
General notes
You can deactivate the flow of fresh air ifunpleasant odors are entering the vehicle fromoutside. The air already inside the vehicle willthen be recirculated.
If you switch on air-recirculation mode, the win-dows can fog up more quickly, in particular atlow temperatures. Only use air-recirculationmode briefly to prevent the windows from fog-ging up.
The operation of air-recirculation mode is thesame for all control panels.
Activating/deactivating
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 123).
XTo activate:press the

iIf you activate the residual heat function athigh temperatures, only the ventilation will beactivated. The blower runs at medium speed.
iYou cannot use the ventilation to cool thevehicle interior to a temperature lower thanthe outside temperature.
Activating/deactivating
XTurn the SmartKey to positionZin the igni-tion lock or remove it (Ypage 123).
XPress theKbutton.The indicator lamp in theKbutton lightsup or goes out.
The indicator lamp in the button indicates thatthe respective function is activated.
iResidual heat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Air vents
Important safety notes
GWARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh airthrough the air vents into the vehicle interior,please observe the following notes:
Rkeep the air inlet between the windshield andthe hood free of blockages, such as ice, snowor leaves.
Rnever cover the air vents or air intake grilles inthe vehicle interior.
iFor optimal climate control in the vehicle,open the air vents completely and set theadjusters to the central position.
Setting the air vents
CSide window defroster vent
DSide air vent
XTo open a side air vent:turn the adjuster inside air ventDto the left.
XTo close a side air vent:turn the adjuster inside air ventDclockwise as far as it will go.
iThe center and rear air vents are adjusted inthe same way.
Air vents121
Climate control
Z

!Do not warm up the engine while stationary.Pull away immediately. Avoid high enginespeeds and full throttle until the engine hasreached its operating temperature.
In vehicles with automatic transmission,engage positions P and R only when the vehi-cle is stationary.
Where possible, avoid spinning the drivewheels when pulling away on slippery roads.You could otherwise damage the drive train.
!Mercedes-AMG vehicles:avoid full-loadoperation and engine speeds greater than5000 rpm when the engine is cold. This helpsto protect the engine and avoids uncomfort-able driving.
Key positions
SmartKey
ZTo remove the SmartKey
(shift the transmission to position])
GPower supply for some consumers, such asthe windshield wipers
HIgnition (power supply for all consumers)and drive position
ITo start the engine
iThe SmartKey can be turned in the ignitionlock even if it is not the correct SmartKey forthe vehicle. The ignition is not switched on.The engine cannot be started.
Start/Stop button
General notes
Vehicles with KEYLESS-GO are equipped withSmartKeys featuring the integrated KEYLESS-GO function and a detachable Start/Stop but-ton.
A check which periodically establishes a radioconnection between the vehicle and the Smart-Key determines whether a valid SmartKey is inthe vehicle. This occurs, for example, whenstarting the engine.
When you insert the Start/Stop button into theignition lock, the system needs approximatelytwo seconds recognition time. You can then usethe Start/Stop button.
Pressing the Start/Stop button several times insuccession corresponds to the different Smart-Key positions in the ignition lock. This is only thecase if you are not depressing the brake pedal.
If you depress the brake pedal and press theStart/Stop button, the engine starts immedi-ately.
To start the vehicle without actively using theSmartKey:
Rthe Start/Stop button must be inserted in theignition lock
Rthe SmartKey must be in the vehicle
Rthe vehicle must not be locked with theSmartKey or KEYLESS-GO (Ypage 71)
Do not keep the KEYLESS-GO key:
Rwith electronic devices, e.g. a mobile phoneor another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the SmartKey remotecontrol or with KEYLESS-GO, after a short time:
Ryou will not be able to switch on the ignitionwith the Start/Stop button.
Ryou will no longer be able to start the enginewith the Start/Stop button until the vehicle isunlocked again.
If you lock the vehicle centrally using the buttonon the front door (Ypage 76), you can continueto start the engine with the Start/Stop button.
The engine can be switched off while the vehicleis in motion by pressing and holding the Start/Stop button for three seconds. This functionoperates independently of the ECO start/stopautomatic engine switch-off function.
Driving123
Driving and parking
Z