2019 MERCEDES-BENZ SLC clock reset

Battery acid is caustic. Avoid con-tact with skin, eyes or clothing.
Wear suitable protective clothing,especially gloves, apron and face-guard.
Rinse any acid spills immediatelywith clear water. Contact a physi-cian if 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 shouldthe battery be damaged in the event of anaccident.
In order for the battery to achieve the maxi-mum possible service life, it must always besufficiently charged.
Like other batteries, the vehicle battery maydischarge over time if you do not use the vehi-cle. In this case, have the battery disconnec-ted at a qualified specialist workshop. You canalso charge the battery with a charger recom-mended by Mercedes-Benz. Contact a quali-fied specialist workshop for further informa-tion.
Have the battery condition of charge checkedmore frequently if you use the vehicle mainlyfor short trips or if you leave it standing idlefor a lengthy period. Consult a qualified spe-cialist workshop if you wish to leave your vehi-cle parked for a long period of time.
Remove the SmartKey if you park the vehicleand do not require any electrical consumers.The vehicle will then use very little energy,thus conserving battery power.
If the power supply has been interrupted, e.g.if you reconnect the battery, you will have to:
Rreset the function for automatically foldingthe exterior mirrors in/out by folding themirrors out once (Ypage 93)
Rset the clock
On vehicles with a multimedia system, thetime is set automatically.
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 suffi-
cient 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
batteries. Wash away battery acid immedi-
ately with plenty of clean water and seek
medical attention.
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 14.8V.
!Onlycharge the battery using the jump-starting connection point.
The jump-starting connection point is in theengine compartment.
Battery (vehicle)259
Breakdown assistance
Z

The brackets for the screw-in towing eye arelocated in the bumpers. They are at the frontand at the rear, behind the covers.
XRemove the towing eye from the vehicle toolkit (Ypage 252).
XPress the mark on coverCinwards in thedirection of the arrow.
XTake coverCoff the opening.
XScrew in the towing eye clockwise as far asit will go and tighten it.
Removing the towing eye
XUnscrew and remove the towing eye.
XAttach coverCto the bumper and pressuntil it engages.
XPlace the towing eye in the vehicle tool kit.
Towing a vehicle with both axles on
the ground
GWARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged.
There is a risk of an accident.
Always switch off the ignition when towing
the vehicle with a tow cable or a tow bar.
The automatic transmission shifts to position]automatically when you open the driver'sor front-passenger door or when you removethe SmartKey from the ignition lock.
In order to ensure that the automatic trans-mission stays in position\\when towingaway the vehicle, you must observe the follow-ing points:
XSwitch on the hazard warning lamps(Ypage 99).
XTurn the SmartKey to positionHin the igni-tion lock.
On vehicles with KEYLESS-GO, use theSmartKey instead of the Start/Stop button(Ypage 118).
XDepress and hold the brake pedal.
XShift the transmission to position\\.
XRelease the brake pedal.
XRelease the electric parking brake.
XLeave the SmartKey in positionHin theignition lock.
In 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. Whenyou reset the combination switch, the hazardwarning flashers start flashing again.
It is important that you observe the safetyinstructions when towing away your vehicle(Ypage 263).
Permitted towing methods
Mercedes-Benz recommends transporting yourvehicle in the case of a breakdown, rather thantowing it away.
When towing away, use a towing rope or atowing bar with both axles on the ground. Donot use any tow bar systems.
Towing the vehicle with the rear axle
raised
!The ignition must be switched off if youare towing the vehicle with the rear axle
raised. Intervention by ESP®could other-wise damage the brake system.
!Vehicles with automatic transmission mustnot be towed with the rear axle raised. Thevehicle/trailer combination may otherwiseswerve or even roll over.
264Towing and tow-starting
Breakdown assistance