2019 MERCEDES-BENZ GLA check engine

Inhaling these exhaust gases is hazardous to
health and can result in poisoning. There is a
risk of fatal injury. Therefore, never leave the
engine running an enclosed space without
adequate ventilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system
or parts of the engine that heat up. There is
a risk of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
General notes
During a cold start, the engine runs at higherspeeds to enable the catalytic converter toreach its operating temperature. The sound ofthe engine may change during this time.
Automatic transmission
XShift the transmission to position](Ypage 134).The transmission position indicator on themultifunction display shows](Ypage 134).
iYou can start the engine in transmissionpositions]and\\.
Starting procedure with the SmartKey
To start the engine using the SmartKey insteadof the Start/Stop button, pull the Start/Stopbutton out of the ignition lock.
XTurn the SmartKey to positionIin the igni-tion lock (Ypage 125) and release it assoon as the engine is running.
Starting procedure with the Start/
Stop button
The Start/Stop button can be used to start thevehicle manually without inserting the Smart-Key into the ignition lock. The Start/Stop but-ton must be inserted in the ignition lock and
the SmartKey must be in the vehicle. Thismode for starting the engine operates inde-pendently of the ECO start/stop automaticengine start function.
You can start the engine if a valid SmartKey isin the vehicle. Switch off the engine andalways take the SmartKey with you when leav-ing the vehicle, even if you only leave it for ashort time. Pay attention to the importantsafety notes.
XDepress the brake pedal and keep itdepressed.
XPress the Start/Stop button once(Ypage 125).The engine starts.
Starting procedure via smartphone
Observe the important safety notes on startingthe engine (Ypage 126).
You can also start your engine via your smart-phone from outside the vehicle. In this case,the previously selected climate control settingis activated. In this way you can cool or heatthe interior of the vehicle before starting thejourney.
Only start the engine via your smartphone if itis safe to start and run the engine where yourvehicle is parked.
Observe the legal stipulations in the areawhere your vehicle is parked. Engine start viasmartphone may be limited to certain coun-tries or regions.
You can execute a maximum of two consecu-tive starting attempts via your smartphone. Ifyou insert the SmartKey into the ignition lock,you can carry out two more starting attempts.
Once you have started the engine, you canswitch the engine off via your smartphone atany time.
You can only start the engine via your smart-phone if:
Rthe SmartKey is in the ignition lock
Rpark position]is selected
Rthe accelerator pedal is not depressed
Rthe alarm for the anti-theft alarm system isnot set
Rthe panic alarm is not activated
Rthe hazard warning lamps are switched off
Rthe hood is closed
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ProblemPossible causes/consequences andPPSolutions
The engine is not run-ning smoothly and ismisfiring.
There is a malfunction in the engine electronics or in a mechanicalcomponent of the engine management system.
XOnly depress the accelerator pedal slightly.Otherwise, non-combusted fuel may get into the catalytic con-verter and damage it.
XHave the cause rectified immediately at a qualified specialistworkshop.
The coolant tempera-ture gauge shows avalue above 248 ‡(120 †). The warninglamp may also be onand a warning tone maysound.
The coolant level is too low. The coolant is too hot and the engine isno longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant tocool down.
XCheck the coolant level (Ypage 276). Observe the warning notesas you do so and add coolant if necessary.
Notes on towing vehicles
The vehicle is not suitable for attaching towbar systems, such as those used for flat tow-ing or dinghy towing.
Attaching or using tow bar systems may resultin damage to the vehicle.
When towing a vehicle with tow bar systems,safe driving characteristics cannot be guaran-teed for the towing vehicle or the towed vehi-cle.
The vehicle/trailer combination may swerve.
Observe the permissible towing methods(Ypage 300) and the notes on towing withboth axles on the ground (Ypage 300).
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to changethe drive program. Depending on the drive pro-gram selected the following vehicle character-istics will change:
Rthe drive (engine and transmission manage-ment)
Rthe sound of the exhaust system (vehicleswith sports exhaust system)
Rthe steering
Rthe availability of the ECO start/stop func-tion
Rthe climate control
Each time you start the engine with the Smart-Key or the Start/Stop button, drive programCis activated. For further information aboutstarting the engine, see (Ypage 126).
XPress DYNAMIC SELECT buttonCas manytimes as necessary until the desired driveprogram is selected.The selected drive program appears in themultifunction display. After five seconds, thedisplay goes out and the status symbol ofthe selected drive program appears.
In addition, the current drive program set-tings are displayed briefly in the multimediasystem display.
iIn a few countries, the ECO start/stopfunction is deactivated at the factory due tothe available fuel grade. In this case, theECO start/stop function is not available inany drive program, regardless of the displayin the multimedia system display.
132DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking

Transmission positions
EPark position
This prevents the vehicle from roll-ing away when stopped.
Only shift the transmission to posi-tion]when the vehicle is station-ary. The parking lock should not beused as a brake when parking.Always apply the electronic parkingbrake in addition to the parking lockin order to secure the vehicle.
In the event of a malfunction of thevehicle's electronics, the transmis-sion may lock in position]. Havethe vehicle electronics checkedimmediately at a qualified specialistworkshop.
Park position]is automaticallyengaged if:
Ryou switch off the engine usingthe SmartKey and remove theSmartKey
Ryou switch off the engine usingthe SmartKey or using the Start/Stop button and open the driver'sdoor or front-passenger door
Ryou open the driver's door whenthe vehicle is stationary or whendriving at a very low speed andthe transmission is in position[or^
FReverse gear
Only shift the transmission intoposition^when the vehicle is sta-tionary.
DNeutral
Do not shift the transmission to\\while driving. The automatic trans-mission could otherwise be dam-aged.
No power is transmitted from theengine to the drive wheels.
Releasing the brakes will allow youto move the vehicle freely, e.g. topush it or tow it.
If ESP®is deactivated or faulty: shiftthe transmission to position\\ifthe vehicle is in danger of skidding,e.g. on icy roads.
If you switch the engine off with thetransmission in position^or[,the automatic transmission shifts to\\automatically.
!Coasting in neutral\\maycause damage to the drive train.
:Drive
The automatic transmissionchanges gear automatically. Allforward gears are available.
Driving tips
Changing gear
The automatic transmission shifts through theindividual gears automatically when it is intransmission position[. This automatic gearshifting behavior is determined by:
Rthe selected drive program
Rthe position of the accelerator pedal
Rthe road speed
Accelerator pedal position
Your style of driving influences how the auto-matic transmission shifts gear:
Rlittle throttle: early upshifts
Rmore throttle: late upshifts
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Before the engine speed reaches the red area,an upshift indicator will be shown in the multi-function display.
XShift to recommended gearCwhen mes-sageDis shown in the multifunction dis-play.
Kickdown
XFor maximum acceleration, depress theaccelerator pedal beyond the pressurepoint.The automatic transmission shifts to a lowergear depending on the engine speed.
XShift back up once the desired speed isreached.
During kickdown, you cannot shift gears usingthe steering wheel paddle shifters.
If you apply full throttle, the automatic trans-mission shifts up to the next gear when themaximum engine speed is reached. This pre-vents the engine from overrevving.
Mercedes-AMG vehicles:it is only possibleto use kickdown in temporary manual driveprogramM. When manual drive programMispermanently activated, kickdown is not possi-ble.
Problems with the transmission
ProblemPossible causes/consequences andPPSolutions
The transmission hasproblems shifting gear.The transmission is losing oil.
XHave the transmission checked at a qualified specialist workshopimmediately.
The acceleration abilityis deteriorating.
The transmission nolonger shifts into all ofthe gears.
Reverse gear can nolonger be engaged.
The transmission is in emergency mode.
XStop the vehicle.
XShift the transmission to position].
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to position[.
XHave the transmission checked at a qualified specialist workshopimmediately.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. Risk of fire and
explosion by improper handling of fuel.
You must avoid fire, open flames, smoking
and creating sparks. Switch off the ignition
before refueling and, if present, switch off
the auxiliary heating.
142Refueling
Driving and parking

take advantage of engine braking. For thisyou must first activate manual gearshifting.This helps you to avoid overheating thebrakes and wearing them out excessively.
When you take advantage of engine braking,it is possible that a drive wheel will notrotate for some time, e.g. on a slippery roadsurface. This could cause damage to thedrive train. This type of damage is not cov-ered by the Mercedes-Benz warranty.
Briefly depressing the accelerator pedal ondownhill gradients while the manual drive pro-gramMis temporarily activated: the automatictransmission may switch to the last activeautomatic drive programEorS. The automatictransmission may shift to a higher gear. Thiscan reduce the engine's braking effect.
Heavy and light loads
GWARNING
If you rest your foot on the brake pedal
while driving, the braking system can over-
heat. This increases the stopping distance
and can even cause the braking system to
fail. There is a risk of an accident.
Never use the brake pedal as a footrest.
Never depress the brake pedal and the
accelerator pedal at the same time.
!Depressing the brake pedal constantlyresults in excessive and premature wear tothe brake pads.
If the brakes have been subjected to a heavyload, do not stop the vehicle immediately.Drive on for a short while. This allows the air-flow to cool the brakes more quickly.
Wet roads
If you have driven for a long time in heavy rainwithout braking, there may be a delayed reac-tion from the brakes when braking for the firsttime. This may also occur after the vehicle hasbeen washed or driven through deep water.
You have to depress the brake pedal morefirmly. Maintain a greater distance from thevehicle in front.
After driving on a wet road or having the vehi-cle washed, brake firmly while paying attentionto the traffic conditions. This will warm up the
brake discs, thereby drying them more quicklyand protecting them against corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-due may form on the brake discs and brakepads. This can result in a significantly longerbraking distance.
RIn order to prevent any salt build-up, applythe brakes occasionally while paying atten-tion to the traffic conditions.
RCarefully depress the brake pedal and thebeginning and end of a journey.
RMaintain a greater distance to the vehicleahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up inthe instrument cluster and
Ryou hear a warning tone while the engineis running
Observe additional warning messages in themultifunction display.
The brake fluid level may be too low due tobrake pad wear or leaking brake lines.
Have the brake system checked immedi-ately. Consult a qualified specialist work-shop to arrange this.
!A function or performance test should onlybe carried out on a 2-axle dynamometer. Ifyou wish to operate the vehicle on such adynamometer, please consult a qualifiedspecialist workshop in advance. You couldotherwise damage the drive train or thebrake system.
!As the ESP®system operates automati-cally, the engine and the ignition must beswitched off (the SmartKey must be in posi-tion

GWARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact
with hot parts of the exhaust system. There
is a risk of fire.
When driving on an unpaved road or off-
road, check the vehicle underside regularly.
In particular, remove trapped plant parts or
other flammable material. Contact a quali-
fied specialist workshop immediately if dam-
age is detected.
!There is a risk of damage to the vehicle if:
Rthe vehicle becomes stuck, e.g. on a highcurb or an unpaved road
Ryou drive too fast over an obstacle, e.g. acurb, a speed bump or a pothole in theroad
Ra heavy object strikes the underbody orparts of the chassis
In situations like this, the body, the under-body, chassis parts, wheels or tires could bedamaged without the damage being visible.Components damaged in this way can unex-pectedly fail or, in the case of an accident,no longer withstand the loads they aredesigned to.
If the underbody paneling is damaged, com-bustible materials such as leaves, grass ortwigs can gather between the underbodyand the underbody paneling. If these materi-als come in contact with hot parts of theexhaust system, they can catch fire.
In such situations, have the vehicle checkedand repaired immediately at a qualified spe-cialist workshop. If on continuing your jour-ney you notice that driving safety isimpaired, pull over and stop the vehicleimmediately, paying attention to road andtraffic conditions. In such cases, consult aqualified specialist workshop.
The vehicle is only designed for easily negotia-ble off-road terrain and poor road surfaces.
When driving off-road, substances such assand, mud and water or water mixed with oilmay get into the brakes. This could result in areduced braking effect or in total brake failureand also in increased wear and tear. The brak-ing characteristics change depending on thematerial entering the brakes. Clean the brakesafter driving off-road. If you detect a reduced
braking effect or grinding noises, have thebrake system checked in a qualified specialistworkshop as soon as possible. Adapt yourdriving style to the different braking character-istics.
Driving off-road increases the likelihood ofdamage to the vehicle, which, in turn, can leadto failure of the mechanical assembly or sys-tems. Adapt your driving style to suit the ter-rain conditions. Drive carefully. Have damageto the vehicle rectified immediately at a quali-fied specialist workshop.
Do not shift into transmission position\\when driving off-road. You could lose controlof the vehicle if you attempt to brake the vehi-cle using the service brake. If the gradient istoo steep for your vehicle, drive back down inreverse gear.
General notes
HEnvironmental note
Protection of the environment is of primary
importance. Treat nature with respect.
Observe all prohibiting signs.
Read this section carefully before driving yourvehicle off-road.
Off-road driving is only possible with theON&OFFROAD package.
The following driving systems are speciallyadapted for driving over easily negotiable off-road terrain:
ROff-road program (Ypage 170)
ROff-road ABS (Ypage 60)
ROff-road 4ETS (Ypage 64)
ROff-road ESP®(Ypage 66)
RDSR (Downhill Speed Regulation)(Ypage 169)
Observe the following notes:
RStop the vehicle before starting to drivealong an off-road route. If necessary, acti-vate the off-road program (Ypage 132).
RTo avoid damaging the vehicle, make surethere is always sufficient ground clearance.
RCheck that items of luggage and loads arestowed safely and are well secured(Ypage 255).
RAlways keep the engine running and in gearwhen driving on a downhill gradient. Acti-vate DSR (Ypage 169).
154Driving tips
Driving and parking

RDrive slowly and evenly, if necessary at awalking pace.
REnsure that the wheels are in contact withthe ground at all times.
RDrive with extreme care on unfamiliar off-road routes where visibility is poor. Forsafety reasons, get out of the vehicle firstand survey the off-road route.
RCheck the depth of water before fording riv-ers and streams.
RWatch out for obstacles.
RTake care when turning on an uphill ordownhill slope or when driving across aslope. The vehicle could otherwise tip over.
RAlways keep the side windows and the pan-orama roof with power tilt/sliding panelclosed during the journey.
RDo not deviate from marked routes.
RDo not use the HOLD function when drivingoff-road, on steep uphill or downhill gradi-ents or on slippery or loose surfaces. TheHOLD function cannot hold the vehicle onsuch surfaces.
Checklist before driving off-road
XEngine oil level:check the engine oil leveland add oil if necessary.
When driving on steep gradients, the engineoil level must be sufficiently high to ensure acorrect oil supply in the vehicle.
XWheels and tires:check the tire treaddepth and tire pressure.
XCheck for damage and remove any foreignobjects, e.g. small stones, from the wheels/tires.
XReplace any missing valve caps.
XReplace dented or damaged wheels.
XRims:dented or bent rims can result in aloss of tire pressure and damage the tirebead. Before driving off-road, check thewheels and replace them if necessary.
Checklist after driving off-road
!If you detect damage to the vehicle afterdriving off-road, have the vehicle checkedimmediately at a qualified specialist work-shop.
XDeactivate off-road program (Ypage 132).
XDeactivate DSR (Ypage 169).
XClean the headlamps and rear lights andcheck for damage.
XClean the front and rear license plates.
XClean the wheels and tires with a water jetand remove any foreign objects.
XClean the wheels, wheel housings and thevehicle underside with a water jet; check forany foreign objects and damage.
XCheck whether twigs or other parts of plantshave become trapped. These increase therisk of fire and can damage fuel pipes, brakehoses or the air bellows of the axle jointsand propeller shafts.
XAfter the trip, examine without fail the entireundercarriage, wheels, tires, brakes, body-work structure, steering, chassis andexhaust system for damage.
XAfter driving in sand, mud, gravel, water orsimilar dirty conditions, have the followingchecked and cleaned:
Rbrake discs
Rwheels
Rbrake pads
Raxle joints
XIf you detect strong vibrations after off-roadtravel, check for foreign objects in thewheels and drive train and remove them ifnecessary. Foreign objects can disturb thebalance and cause vibrations.
Driving over poor road surfaces places greaterdemands on your vehicle than driving on nor-mal roads. After driving off-road, check thevehicle. This allows you to detect damagepromptly and reduce the risk of an accident toyourself and other road users.
Driving on sand
Observe the following rules when driving onsand:
RActivate the off-road program (Ypage 132).
RAvoid high engine speeds.
RUse the left-hand steering wheel paddleshifter to shift to a lower gear appropriate tothe terrain.
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RDrive quickly to overcome the rolling resist-ance. Otherwise the vehicle's wheels couldbecome stuck in loose ground.
RDrive in the tracks of other vehicles if possi-ble. Make sure that:
-the tire ruts are not too deep.
-the sand is sufficiently firm.
-the ground clearance of the vehicle is suf-ficient.
Tire ruts and gravel roads
!Check that the ruts are not too deep andthat your vehicle has sufficient clearance.Otherwise, your vehicle could be damagedor bottom out and get stuck.
Observe the following rules when driving alongruts in off-road terrain or on roads with loosegravel:
RActivate the off-road program (Ypage 132).
RAvoid high engine speeds.
RShift to a lower gear using the left-handsteering wheel paddle shifter.
RDrive slowly.
RWhere ruts are too deep, drive with thewheels of one side on the center grassyarea, if possible.
Traveling uphill
Approach/departure angle
GWARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is
a risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle.
RObserve the warnings for off-road driving(Ypage 153).
RFollow the line of fall when driving on slopesand steep inclines.
RBefore driving on extreme uphill and down-hill gradients, select the off-road program(Ypage 132).
RDrive slowly.
RAccelerate gently and make sure that thewheels are gripping.
RAvoid high engine speeds, except when driv-ing on sandy and muddy routes with highdriving resistance.
RUse the left-hand steering wheel paddleshifter to shift to a lower gear appropriate tothe gradient.
RUse the left-hand steering wheel paddleshifter to shift into a lower gear in good timeon long and steep downhill gradients.
Hill start assist will aid you when pulling awayon a hill. For further information about hillstart assist, see (Ypage 128).
Do not shift into transmission position\\when driving off-road. You could lose controlof the vehicle if you attempt to brake the vehi-cle using the service brake. If the gradient istoo steep for your vehicle, drive back down inreverse gear.
Always observe the approach/departure anglevalues (Ypage 340).
Maximum gradient-climbing capability
Always observe the maximum gradient climb-ing ability values (Ypage 340).
Hilltops
When driving up an uphill gradient, slightlyreduce pressure on the accelerator immedi-ately before reaching the brow of the hill.Make use of the vehicle's own impetus totravel over the brow.
This style of driving prevents:
Rthe vehicle from lifting off the ground on thebrow of a hill
Rthe vehicle from traveling too quickly downthe other side
Driving downhill
RDrive slowly.
RDo not drive at an angle down steepinclines. Steer into the line of fall and drivewith the front wheels aligned straight. Oth-erwise, the vehicle could slip sideways, tipand rollover.
RShift to a lower gear using the left-handsteering wheel paddle shifter before tacklingsteep downhill gradients.
156Drivingtips
Driving an d parking