2019 MERCEDES-BENZ GLA Owners Manual

particularly at low temperatures. Have thethawed-out battery checked at a qualified spe-cialist workshop.
Only charge the installed battery with a batterycharger which has been tested and approvedby Mercedes-Benz. A battery charger unit spe-cially adapted for Mercedes-Benz vehicles andtested and approved by Mercedes-Benz isavailable as an accessory. It permits the charg-ing of the battery in its installed position. Con-tact an authorized Mercedes-Benz Center forfurther information and availability. Read thebattery charger's operating instructions beforecharging the battery.
Replacing the 12 V battery
Observe the notes on the 12 V battery(Ypage 292).
Mercedes-Benz recommends that you havethe 12-V battery replaced at a qualified spe-cialist workshop, e.g. an authorized Mercedes-Benz Center.
If you want to replace the battery yourself,observe the following notes:
RAlways replace a defective battery with abattery which meets the specific require-ments of the vehicle.
The vehicle is equipped with a battery usingAGM (absorbent glass mat) technology or abattery using EFB (enhanced flooded bat-tery) technology. Full vehicle functionality isguaranteed only with an AGM or EFB bat-tery. If replacement is necessary, alwaysuse the battery technology originally instal-led. Switching between the battery technol-ogies is not permitted. For safety reasons,Mercedes-Benz recommends that you onlyuse batteries which have been tested andapproved for your vehicle by Mercedes-Benz.
RUse detachable parts such as breatherhoses, angled connecting pieces or terminalcovers from the battery which is to bereplaced.
RMake sure that the vent hose is always con-nected to the original opening on the bat-tery side.
RInstall existing or supplied cell caps; other-wise gases or battery acid could escape.
RMake sure that the detachable parts areconnected again in the same way.
Jump-starting
For the jump-starting procedure, use only the jump-starting connection point, consisting of apositive terminal and a ground point, in the engine compartment.
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 immediately with plenty of
clean water and seek medical attention.
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.
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GWARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can ignite. There is a risk of an explosion.
RMake sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
RNever place metal objects or tools on a battery.
RIt is important that you observe the described order of the battery terminals when connect-
ing and disconnecting a battery.
RWhen jump-starting, make sure that the battery poles with identical polarity are connected.
RIt is particularly important to observe the described order when connecting and disconnect-
ing the jumper cables.
RNever connect or disconnect the battery terminals while the engine is running.
GWARNING
A discharged battery can freeze at temperatures below freezing point. When jump-starting the
vehicle or charging the battery, gases can escape from the battery. There is a risk of an explo-
sion.
Allow the frozen battery to thaw out before charging it or jump-starting.
!Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could bedamaged by the non-combusted fuel.
If the indicator/warning lamps do not light up in the instrument cluster at low temperatures, it isvery likely that the discharged battery has frozen. In this case you may neither jump-start thevehicle nor charge the battery. Let the battery thaw first. The service life of a thawed-out batterymay be shorter. The starting characteristics can be impaired, particularly at low temperatures.Have the thawed-out battery 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 insula-ted terminal 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 partswhile the jumper cables are connected to the battery.
RThe jumper cables cannot come into contact with parts that can move when the engine is run-ning, 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.
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XSwitch off all electrical consumers, e.g. rear window defroster, lighting, etc.
XOpen the hood.
Position number

Towing and tow-starting
Important safety notes
GWARNING
Functions relevant to safety are restricted or
no longer available if:
Rthe engine is not running
Rthe brake system or the power steering is
malfunctioning
Rthere is a malfunction in the power supply
or the vehicle's electrical system
When your vehicle is towed away or towed
started, you may require considerably more
effort to steer and brake. There is a risk of
an accident.
In such cases, use a tow bar. Before being
towed away or tow started, make sure the
steering moves freely.
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.
GWARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissi-
ble gross weight of your vehicle, the:
Rthe towing eye could detach itself
Rthe vehicle/trailer combination could roll-
over.
There is a risk of an accident.
When towing or tow-starting another vehi-
cle, its weight should not be greater than
the permissible gross weight of your vehicle.
Details on the permissible gross vehicle weightof your vehicle can be found on the vehicleidentification plate (Ypage 333).
!When Active Brake Assist, Active DistanceAssist DISTRONIC or the HOLD function isactivated, the vehicle brakes automaticallyin certain 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 brakeis released. If the electric parking brake isfaulty, 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 recoverypurposes as this could damage the vehicle.If in doubt, recover the vehicle with a crane.
!When towing, pull away slowly andsmoothly. If the tractive power is too high,the vehicles could be damaged.
!The vehicle can be towed a maximum of30 miles (50km). The towing speed of30 mph (50km/h) must not be exceeded.
If the vehicle has to be towed more than30 miles (50km), the front axle must beraised or the entire vehicle raised and trans-ported.
!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 mayotherwise shift to position]when youopen the driver's or front-passenger door,which could damage the transmission.
!Vehicles with automatic transmission mustnot be started by tow-starting. This couldotherwise damage the transmission.
It is better to have the vehicle transportedthan to have it towed away.
If the vehicle can no longer be driven becauseof an accident or breakdown, you have the fol-lowing options:
RTransporting the vehicle.
As a rule, you should have the vehicle trans-ported.
RTowing the vehicle with a tow rope or towbar.
Only tow the vehicle in exceptional cases.
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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 asystem malfunction:
Rthe electric parking brake may not beapplied in certain circumstances, or
Rit may no longer be possible to shift thetransmission to position]
Switch off non-essential consumers, e.g. theradio.
Deactivate the automatic locking featurebefore the vehicle is towed (Ypage 199). Youcould otherwise be locked out when pushingor towing the 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 rearand at the front, under coversC.
XRemove the towing eye from the stowagespace.
The towing eye is located with the vehicletool kit under the cargo compartment floor(Ypage 287).
Vehicles with the TIREFIT kit: the towing eyeis beneath the tire inflation compressor(Ypage 287).
XPress the mark on coverCinwards in thedirection of the arrow.
XTake coverCoff the opening.
XScrew in the towing eye clockwise to thestop.
Removing the towing eye
XUnscrew and remove the towing eye.
XAttach coverCto the bumper and pressuntil it engages.
XPlace the towing eye in the stowage wellbeneath the cargo compartment floor in thecargo compartment (Ypage 287).
XVehicles with the TIREFIT kit: put back thetire inflation compressor (Ypage 287).
Towing the vehicle with the front
axle raised
Observe the important safety notes when tow-ing your vehicle with the front axle raised(Ypage 298).
Only vehicles without 4MATIC can betowed with the front axle raised.
!Vehicles with 4MATIC must not be towedwith either the front or the rear axle raised,as doing so will damage the transmission.
Vehicles with 4MATIC may either be towedaway with both axles on the ground or be loa-ded up and transported.
!The ignition must be switched off if thevehicle is being towed with the front axle
raised. Otherwise, ESP®may intervene anddamage the brake system.
XOn vehicles with KEYLESS-GO or theKEYLESS-GO start function:you must usethe SmartKey instead of the Start/Stop but-ton (Ypage 126).
XMake sure that the vehicle is stationary.
XTurn the SmartKey to positionHin the igni-tion lock.
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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 199).
XSwitch on the hazard warning lamps(Ypage 104).
XTurn the SmartKey in the ignition lock topositionZand leave the SmartKey in theignition lock.
Towing a vehicle with both axles on
the ground
It is important that you observe the safetyinstructions when towing away your vehicle(Ypage 298).
XOn vehicles with KEYLESS-GO or theKEYLESS-GO start function:you must usethe SmartKey instead of the Start/Stop but-ton (Ypage 126).
The automatic transmission automaticallyshifts to position]when you open the driv-er's or front-passenger door or when youremove the SmartKey from the ignition lock. Inorder to ensure that the automatic transmis-sion stays in position\\when towing awaythe vehicle, you must observe the followingpoints:
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 theignition lock.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch on the hazard warning lamps(Ypage 104).
iIn order to signal a change of directionwhen towing the vehicle with the hazardwarning lamps switched on, use the combi-nation switch as usual. In this case, only theindicator lamps for the direction of travel
flash. After resetting the combinationswitch, the hazard warning lamp startsflashing again.
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.
Transporting the vehicle
Vehicles with automatic transmission
!When the vehicle is loaded for transport,the front and rear axles must be stationaryand on the same transportation vehicle.Positioning over the connection point of thetransport vehicle is not permitted. The drivetrain may otherwise be damaged.
All vehicles
!You may only secure the vehicle by thewheels, not by parts of the vehicle such asaxle or steering components. Otherwise, thevehicle could be damaged.
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 125).
XShift the transmission to position\\.
As soon as the vehicle has been loaded:
XPrevent the vehicle from rolling away byapplying the electric parking brake.
XShift the transmission to position].
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XTurn the SmartKey to positionZin the igni-tion lock and remove it.
XSecure the vehicle.
The towing eye can be used to pull the vehicleonto a trailer or transporter for transportingpurposes.
Notes on 4MATIC vehicles
!Vehicles with 4MATIC must not be towedwith either the front or the rear axle raised,as doing so will damage the transmission.
Vehicles with 4MATIC may only either betowed away with both axles on the ground orbe loaded up and transported.
If the vehicle's transmission, front, or rear axleis damaged, have the vehicle transported on atruck or trailer.
In the event of damage to the electricalsystem:
If the battery is defective, the automatic trans-mission will be locked in position]. To shiftthe automatic transmission to position\\, youmust provide power to the vehicle's on-boardelectrical system in the same way as whenjump-starting (Ypage 295).
Have the vehicle transported on a transporteror trailer.
Tow-starting (emergency engine
starting)
!Vehicles with automatic transmission mustnot be tow-started. You could otherwisedamage the automatic transmission.
iYou can find information on "Jump-start-ing" under (Ypage 295).
Fuses
Important safety notes
GWARNING
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher
amperage, the electric cables could be over-
loaded. This could result in a fire. There is a
risk of an accident and injury.
Always replace faulty fuses with the speci-
fied new fuses having the correct amperage.
!Only use fuses that have been approvedfor Mercedes-Benz vehicles and which havethe correct fuse rating for the system con-cerned. Only use fuses marked with an "S".Otherwise, components or systems could bedamaged.
!Make sure that no moisture can enter thefuse box when the cover is open.
!When closing the cover, make sure that itis lying correctly on the fuse box. Moistureseeping in or dirt could otherwise impair theoperation of the fuses.
The fuses in your vehicle serve to close downfaulty circuits. If a fuse blows, all the compo-nents on the circuit and their functions stopoperating.
Blown fuses must be replaced with fuses ofthe same rating, which you can recognize bythe color and value. The fuse ratings, andother items of information to be complied withare, listed in the fuse allocation chart.
The fuse allocation chart is in the fuse box inthe front-passenger footwell (Ypage 302).
If a newly inserted fuse also blows, have thecause traced and rectified at a qualified spe-cialist workshop, e.g. an authorized Mercedes-Benz Center.
Before changing a fuse
XSecure the vehicle against rolling away(Ypage 145).
XSwitch off all electrical consumers.
XVehicles without KEYLESS-GO:removethe SmartKey from the ignition lock.
XVehicles with KEYLESS-GO start-func-tion or KEYLESS-GO:open the driver'sdoor.The vehicle electronics are now in positionZ. This is the same as the SmartKey beingremoved from the ignition.
The fuses are located in various fuse boxes:
RFuse box in the engine compartment on theleft-hand side of the vehicle, when viewed inthe direction of travel
RFuse box in the front-passenger footwell
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The fuse allocation chart is on the fuse box inthe front-passenger footwell (Ypage 302).
Fuse box in the engine compartment
GWARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured
by the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
XOpen the hood.
XUse a dry cloth to remove any moisturefrom the fuse box.
XTo open:open clampsD.
XFold up coverCin the direction of thearrow and remove it.
XTo close:check whether the seal is lyingcorrectly in coverC.
XInsert coverCat the back into openings