2019 MERCEDES-BENZ CLA clock reset

Activating/deactivating the acoustic
locking verification signal
If you switch on theAcousticAcousticLockLockfunction, anacoustic signal sounds when you lock the vehi-cle.
XPress theYorebutton on the steeringwheel to select theSett.Sett.menu.
XPress thedorcbutton to select theVehicleVehiclesubmenu.
XPressvto confirm.
XPress thedorcbutton to select theAcoustic LockAcoustic Lockfunction.If theAcoustic LockAcoustic Lockfunction is activated,the multifunction display shows the7symbol in orange.
XPress thevbutton to save the setting.
Comfort
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available in Canada.
This function is only available when the vehicle isequipped with the electrical fold-in function.
When you activate theAuto.Auto.MirrorMirrorFoldingFoldingfunction, the exterior mirrors are folded in whenthe vehicle is locked. If you unlock the vehicleand then open the driver's or front-passengerdoor, the exterior mirrors fold out again.
If you have switched on theAuto. MirrorAuto. MirrorFoldingFoldingfunction and you fold in the exteriormirrors using the button on the door(Ypage 98), they will not fold out automatically.The exterior mirrors can then only be folded outusing the button on the door.
XPress theYorebutton on the steeringwheel to select theSett.Sett.menu.
XPress thedorcbutton to select theConvenienceConveniencesubmenu.
XPressvto confirm.
XPress thedorcbutton to select theAuto. Mirror FoldingAuto. Mirror Foldingfunction.If theAuto. Mirror FoldingAuto. Mirror Foldingfunction isswitched on, the multifunction display showsthe exterior mirror in orange.
XPress thevbutton to save the setting.
Restoring the factory settings
XPress theYorebutton on the steeringwheel to select theSett.Sett.menu.
XPress thedorcbutton to select theFactory SettingFactory Settingsubmenu.
XPressvto confirm.TheReset All Settings?Reset All Settings?functionappears.
XPress thedorcbutton to selectNoNoorYesYes.
XPress thevbutton to confirm the selec-tion.If you have selectedYesYes, the multifunctiondisplay shows a confirmation message.
For safety reasons, theDaytime RunningDaytime RunningLightsLightsfunction in theLightLightsubmenu is onlyreset if the vehicle is stationary.
AMG menu (Mercedes-AMG vehicles)
Warm-up
CDigital speedometer
DGear indicator

Only replace a battery with a battery that hasbeen recommended by Mercedes-Benz.
Remove the SmartKey if you park the vehicleand do not require any electrical consumers.The vehicle will then use very little energy, thusconserving battery power.
If the power supply has been interrupted, e.g. ifyou reconnect the battery, you will have to:
Rset the clock using the multimedia system(see the Digital Operator's Manual)
Rreset the function for folding the exterior mir-rors in/out automatically, by folding the mir-rors out once (Ypage 98)
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 over a battery.
GWARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion.
GWARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
!Only use battery chargers with a maximumcharging voltage of 14.8 V.
!Only charge the battery using the jump-starting connection point.
The jump-starting connection point is in theengine compartment (Ypage 282).
XOpen the hood.
XConnect the battery charger to the positiveterminal and ground point in the same orderas when connecting the donor battery in thejump-starting procedure (Ypage 282).
If the indicator/warning lamps do not light up inthe instrument cluster at low temperatures, it isvery likely that the discharged battery has fro-zen. In this case you may neither jump-start thevehicle nor charge the battery. The service life ofa thawed-out battery may be shorter. The start-ing characteristics can be impaired, particularlyat low temperatures. Have the thawed-out bat-tery checked at a qualified specialist workshop.
Only charge the installed battery with a batterycharger which has been tested and approved byMercedes-Benz. A battery charger unit speciallyadapted for Mercedes-Benz vehicles and testedand approved by Mercedes-Benz is available asan accessory. It permits the charging of the bat-tery in its installed position. Contact an author-ized Mercedes-Benz Center for further informa-tion and availability. Read the battery charger'soperating instructions before charging the bat-tery.
Replacing the 12 V battery
Observe the notes on the 12 V battery(Ypage 279).
Mercedes-Benz recommends that you have the12 V battery replaced at a qualified specialistworkshop, e.g. at an authorized Mercedes-BenzCenter.
If you want to replace the battery yourself,observe the following notes:
RAlways replace a defective battery with a bat-tery which meets the specific requirements ofthe vehicle.
The vehicle is equipped with a battery usingAGM (absorbent glass mat) technology or abattery using EFB (enhanced flooded battery)technology. Full vehicle functionality is guar-anteed only with an AGM or EFB battery. Ifreplacement is necessary, always use the bat-tery technology originally installed. Switchingbetween the battery technologies is not per-mitted. For safety reasons, Mercedes-Benzrecommends that you only use batteries
Battery (vehicle)281
Breakdown assistance
Z

The towing eye is located with the vehicle toolkit under the cargo compartment floor(Ypage 274).
Vehicles with the TIREFIT kit: the towing eye isbeneath the tire inflation compressor(Ypage 274).
XPress the mark on coverCinwards in thedirection of the arrow.
XTake coverCoff the opening.
XScrew in the towing eye clockwise to the stop.
Removing the towing eye
XUnscrew and remove the towing eye.
XAttach coverCto the bumper and press untilit engages.
XPlace the towing eye in the stowage wellbeneath the cargo compartment floor in thecargo compartment (Ypage 274).
XVehicles with the TIREFIT kit: put back the tireinflation compressor (Ypage 274).
Towing the vehicle with the front axle
raised
Observe the important safety notes when tow-ing your vehicle with the front axle raised(Ypage 284).
Only vehicles without 4MATIC can be towedwith the front axle raised.
!Vehicles with 4MATIC must not be towedwith either the front or the rear axle raised, asdoing so will damage the transmission.
Vehicles with 4MATIC may either be towed awaywith both axles on the ground or be loaded upand transported.
!The ignition must be switched off if the vehi-cle is being towed with the front axle raised.
Otherwise, ESP®may intervene and damagethe brake system.
XOn vehicles with KEYLESS-GO or the KEY-LESS-GO start function:you must use theSmartKey instead of the Start/Stop button(Ypage 124).
XMake sure that the vehicle is stationary.
XTurn the SmartKey to positionHin the igni-tion lock.
XWhen the vehicle is stationary, depress thebrake pedal and keep it depressed.
XShift the automatic transmission to position].
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch off the automatic locking(Ypage 189).
XSwitch on the hazard warning lamps(Ypage 103).
XTurn the SmartKey in the ignition lock to posi-tionZand leave the SmartKey in the ignitionlock.
Towing a vehicle with both axles on
the ground
It is important that you observe the safetyinstructions when towing away your vehicle(Ypage 284).
XOn vehicles with KEYLESS-GO or the KEY-LESS-GO start function:you must use theSmartKey instead of the Start/Stop button(Ypage 124).
The automatic transmission automatically shiftsto position]when you open the driver's orfront-passenger door or when you remove theSmartKey from the ignition lock. In order toensure that the automatic transmission stays inposition\\when towing away the vehicle, youmust observe the following points:
XMake sure that the vehicle is stationary.
XTurn the SmartKey to positionHin the igni-tion lock.
XDepress and hold the brake pedal.
XShift the automatic transmission to position\\.
XLeave the SmartKey in positionHin the igni-tion lock.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch on the hazard warning lamps(Ypage 103).
iIn order to signal a change of direction whentowing the vehicle with the hazard warninglamps switched on, use the combinationswitch as usual. In this case, only the indicatorlamps for the direction of travel flash. Afterresetting the combination switch, the hazardwarning lamp starts flashing again.
286Towing and tow-starting
Breakdown assistance