MERCEDES-BENZ GLA 2019 Owners Manual

Important safety notes
GWARNING
When you drive in emergency mode, the
handling characteristics are impaired. e.g.
when cornering, when accelerating strongly
and when braking. There is a risk of an acci-
dent.
Do not exceed the maximum specified
speed. Avoid any abrupt steering and driving
maneuvers as well as driving over obstacles
(curbs, pot holes, off-road). This applies, in
particular, to a loaded vehicle.
Stop driving in emergency mode if you
notice:
Rbanging noise
Rvehicle vibration
Rsmoke which smells like rubber
Rcontinuous ESP®intervention
Rcracks in the tire side walls
After driving in emergency mode, have the
rims checked by a qualified specialist work-
shop with regard to their further use. The
defective tire must be replaced in every
case.
TIREFIT kit
Important safety notes
TIREFIT is a tire sealant.
For USA only:You can use TIREFIT to sealpunctures of up to 0.16 in (4 mm), particularlythose in the tire tread. You can use TIREFIT atoutside temperatures down to

Using the TIREFIT kit
XDo not remove any foreign objects whichhave penetrated the tire, e.g. screws ornails.
XRemove the tire sealant bottle, the accom-panying TIREFIT sticker and the tire inflationcompressor from the stowage well under-neath the cargo compartment floor(Ypage 287).
XAffix partCof the TIREFIT sticker to theinstrument cluster within the driver's field ofvision.
XAffix partDof the TIREFIT sticker near thevalve on the wheel with the defective tire.
XPull connector

Tire pressure not reached
If a pressure of 180 kPa (1.8 bar/26 psi) hasnot been attained after five minutes:
XSwitch off the tire inflation compressor.
XUnscrew the filler hose from the valve of thefaulty tire.
Note that tire sealant may escape when youunscrew the filler hose.
XUSA only:very slowly drive the vehicle for-wards or reverse approximately 30 ft(10m).
XPump upthe tire again.
After a maximum of five minutes the tirepressure must be at least 180 kPa (1.8 bar/26 psi).
GWARNING
If the required tire pressure is not reached
after the specified time, the tire is too badly
damaged. The tire sealant cannot repair the
tire in this instance. Damaged tires and a
tire pressure that is too low can significantly
impair the vehicle's braking and driving
characteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tire pressure reached
GWARNING
A tire temporarily sealed with tire sealant
impairs the vehicle's driving characteristics
and is not suitable for driving at higher
speeds. There is a risk of an accident.
Adapt your driving style accordingly and
drive carefully. Do not exceed the maximum
permissible speed for a tire sealed with tire
sealant.
USA only:The maximum permissible speedfor a tire sealed with tire sealant is 50 mph(80 km/h). The upper part of the TIREFITsticker must be affixed to the instrument clus-ter in the driver's field of vision.
If a tire pressure of 180 kPa (1.8 bar/26 psi)has been attained after five minutes:
XSwitch off the tire inflation compressor.
XUnscrew the filler hose from the valve of thefaulty tire.Note that tire sealant may escape when youunscrew the filler hose.
XUSA only:Stow the tire sealant bottle andthe tire inflation compressor.
XPull away immediately.
XStop after driving for approximately tenminutes and check the tire pressure withthe tire inflation compressor.The tire pressure must now be at least130 kPa (1.3 bar/19 psi).
GWARNING
If the required tire pressure is not reached
after driving for a short period, the tire is too
badly damaged. The tire sealant cannot
repair the tire in this instance. Damaged
tires and a tire pressure that is too low can
significantly impair the vehicle's braking and
driving characteristics. There is a risk of
accident.
Do not continue driving. Contact a qualified
specialist workshop.
iUSA only:In cases such as the one men-tioned above, contact an authorizedMercedes-Benz Center. Or call1-800-FOR-MERCedes (in the USA) or1-800-387-0100 (in Canada).
XUSA only:Correct the tire pressure if it isstill at least 130 kPa (1.3 bar/19 psi). Seethe Tire and Loading Information placard onthe driver's side B-pillar or the tire pressuretable in the fuel filler flap for values.
XTo increase the tire pressure:switch onthe tire inflation compressor.
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XTo reduce the tire pressure:depress pres-sure release buttonCnext to pressuregaugeD.
XWhen the tire pressure is correct, unscrewthe filler hose from the valve of the sealedtire.Note that tire sealant may escape when youunscrew the filler hose.
XScrew the valve cap onto the tire valve ofthe sealed tire.
XPull the tire sealant bottle out of the tireinflation compressor.
The filler hose remains attached to the tiresealant bottle.
XDrive to the nearest qualified specialistworkshop and have the tire changed there.
XHave the tire sealant bottle replaced assoon as possible at a qualified specialistworkshop.
XHave the tire sealant bottle replaced everyfour years at a qualified specialist workshop.
Battery (vehicle)
Important safety notes
Special tools and expert knowledge arerequired when working on the battery, e.g.removal and installation. You should thereforehave all work involving the battery carried outat a qualified specialist workshop.
GWARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This
can lead to function restrictions applying to
safety-relevant systems, e.g. the lighting
system, the ABS (anti-lock braking system)
or the ESP®(Electronic Stability Program).
The operating safety of your vehicle may be
restricted.
You could lose control of the vehicle, for
example:
Rwhen braking
Rin the event of abrupt steering maneuvers
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar
incident, contact a qualified specialist work-
shop immediately. Do not drive any further.
You should have all work involving the bat-
tery carried out at a qualified specialist
workshop.
For further information about ABS and ESP®,see (Ypage 60) and (Ypage 63).
GWARNING
Electrostatic build-up can lead to the crea-
tion of sparks, which could ignite the highly
explosive gases of a battery. There is a risk
of an explosion.
Before handling the battery, touch the vehi-
cle body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms whencharging the battery as well as when jump-starting.
Always make sure that neither you nor the bat-tery is electrostatically charged. A build-up ofelectrostatic charge can be caused, for exam-ple:
Rby wearing clothing made from syntheticfibers
Rdue to friction between clothing and seats
Rif you push or pull the battery across thecarpet or other synthetic materials
Rif you rub the battery with a cloth
GWARNING
During the charging process, a battery pro-
duces hydrogen gas. If a short circuit occurs
292Battery (vehicle)
Roadside Assistance

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 connecting and disconnecting a bat-
tery.
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 dis-
connecting the jumper cables.
RNever connect or disconnect the battery
terminals while the engine is running.
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.
HEnvironmental note
Batteries contain pollutants.
It is illegal to dispose of
them with the household
rubbish. They must be col-
lected separately and dis-
posed of in an environmen-
tally 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 bat-
teries.
!Have the battery regularly checked at aqualified specialist workshop.
Comply with the service intervals in theMaintenance Booklet, or contact a qualifiedspecialist workshop for more information.
!You should have all work involving the bat-tery carried out at a qualified specialistworkshop. In the exceptional case that it isnecessary for you to disconnect the batteryyourself, make sure that:
Rswitch off the engine and remove theSmartKey. On vehicles with KEYLESS-GO,make sure that the ignition is switchedoff. Check that all the indicator lamps inthe instrument cluster are off. Otherwise,electronic components, such as the alter-nator, 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. Thevehicle is secured against rolling away.You can then no longer move the vehicle.
The battery and the cover of the positive ter-minal clamp must be installed securely dur-ing operation.
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 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.
Battery (vehicle)293
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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.
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,thus conserving battery power.
If the power supply has been interrupted, e.g.if you 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 exteriormirrors in/out automatically, by folding themirrors out once (Ypage 99)
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 14.8 V.
!Only charge the battery using the jump-starting connection point.
The jump-starting connection point is in theengine compartment (Ypage 295).
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 295).
If the indicator/warning lamps do not light upin the instrument cluster at low temperatures,it is very likely that the discharged battery hasfrozen. In this case you may neither jump-startthe vehicle nor charge the battery. The servicelife of a thawed-out battery may be shorter.The starting characteristics can be impaired,
294Battery (vehicle)
Roadside Assistance

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.
Jump-starting295
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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.
298Towing and tow-starting
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