2019 MERCEDES-BENZ GLA warning light

It is possible to make use of the residual heatof the engine to continue heating the vehiclefor approximately 30 minutes after the enginehas been switched off. The heating timedepends on the set interior temperature.
iThe blower will run at a low speed regard-less of the airflow setting.
iIf you activate the residual heat function athigh temperatures, only the ventilation willbe activated. The blower runs at mediumspeed.
iYou cannot use the ventilation to cool thevehicle interior to a temperature lower thanthe outside temperature.
Activating/deactivating
XTurn the SmartKey to positionZin the igni-tion lock or remove it (Ypage 125).
XPress theKbutton.The indicator lamp in theKbutton lightsup or goes out.
The indicator lamp in the button indicatesthat the respective function is activated.
iResidual heat is deactivated automatically:
Rafter approximately 30 minutes
Rwhen the ignition is switched on
Rif the battery voltage drops
Air vents
Important safety notes
GWARNING
Very hot or very cold air can flow from the
air vents. This could result in burns or frost-
bite in the immediate vicinity of the air
vents. There is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh airthrough the air vents into the vehicle interior,please observe the following notes:
Rkeep the air inlet between the windshieldand the hood free of blockages, such as ice,snow or leaves.
Rnever cover the air vents or air intake grillesin the vehicle interior.
iFor optimal climate control in the vehicle,open the air vents completely and set theadjusters to the central position.
Setting the air vents
CSide window defroster vent
DSide air vent
ISide air vent open
JSide air vent closed
XTo open a side air vent:turn the adjusterin side air ventDto the left in positionI.
XTo close a side air vent:turn the adjusterin side air ventDclockwise as far as it willgo to positionJ.
iThe center and rear air vents are adjustedin the same way.
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Climate control
Z

The engine can be switched off while the vehi-cle is in motion by pressing and holding theStart/Stop button for three seconds. Thisfunction operates independently of the ECOstart/stop automatic engine switch-off func-tion.
Key positions with the Start/Stop button
CStart/Stop button
DIgnition lock
As soon as the ignition is switched on, all theindicator lamps in the instrument cluster lightup.
For further information on situations in whichan indicator lamp either fails to go out afterthe engine is started or lights up while driving,please refer to "Warning and indicator lamps inthe instrument cluster" (Ypage 232).
If Start/Stop buttonChas not yet beenpressed, this is the same as the SmartKeybeing removed from the ignition.
XTo switch on the power supply:pressStart/Stop buttonConce.The power supply is switched on. You cannow activate the windshield wipers, forexample.
The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop buttonCtwice whenin this position
XTo switch on the ignition:press Start/Stop buttonCtwice.The ignition is switched on.
If you press Start/Stop buttonConcewhen in this position, the ignition isswitched off again.
Removing the Start/Stop button
You can remove the Start/Stop button fromthe ignition lock and start the vehicle as nor-mal using the SmartKey.
You can only switch between Start/Stop but-ton mode and SmartKey operation when thevehicle is stationary.
You must also engage park position].
XRemove Start/Stop buttonCfrom ignitionlockD.
You do not have to remove the Start/Stop but-ton from the ignition lock when you leave thevehicle. You should, however, always take theSmartKey with you when leaving the vehicle.As long as the SmartKey is in the vehicle:
Rthe vehicle can be started using the Start/Stop button
Rthe electrically powered equipment can beoperated
Starting the engine
Important safety notes
GWARNING
If children are left unsupervised in the vehi-
cle, they could:
Roperate the vehicle's equipment
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake
Rshift the automatic transmission out of
park position]
Rstart the engine
There is a risk of an accident and injury.
Never leave children or animals unattended
in the vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. This
also applies for the Digital Vehicle Key if the
"Digital Vehicle Key" function is activated via
Mercedes me connect.
GDANGER
Combustion engines emit poisonous
exhaust gases such as carbon monoxide.
126Driving
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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

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

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

sound and the distance warning lamp will lightup in the instrument cluster. Brake immedi-ately in order to increase the distance to thevehicle in front or take evasive action providedit is safe to do so.
Active Distance Assist DISTRONIC operates inthe speed range between 0 mph (0 km/h) and120 mph (200 km/h).
Change into a lower gear in good time on longand steep downhill gradients. This is especiallyimportant if the vehicle is laden. By doing so,you will make use of the braking effect of theengine. This relieves the load on the brake sys-tem and prevents the brakes from overheatingand wearing too quickly.
Do not use Active Distance Assist DISTRONICon roads with steep gradients.
For Active Distance Assist DISTRONIC toassist you when driving, the radar sensor sys-tem must be operational.
As Active Distance Assist DISTRONIC trans-mits radar waves, it can resemble the radardetectors of the responsible authorities. Youcan refer to the relevant chapter in the Opera-tor's Manual if questions are asked about this.
iUSA only: This device has been approvedby the FCC as a "Vehicular Radar System".The radar sensor is intended for use in anautomotive radar system only. Removal,tampering, or altering of the device will voidany warranties, and is not permitted by theFCC. Do not tamper with, alter, or use in anynon-approved way.
Any unauthorized modification to this devicecould void the user's authority to operatethe equipment.
iCanada only: This device complies withRSS-210 of Industry Canada. Operation issubject to the following two conditions:
1. This device may not cause interference,and
2. This device must accept any interferencereceived, including interference that maycause undesired operation of the device.
Removal, tampering, or altering of thedevice will void any warranties, and is notpermitted. Do not tamper with, alter, or usein any non-approved way.
Any unauthorized modification to this devicecould void the user's authority to operatethe equipment.
Important safety notes
GWARNING
Active Distance Assist DISTRONIC does not
react to:
Rpeople or animals
Rstationary objects in the road, e.g. stop-
ped or parked vehicles
Roncoming vehicles and crossing traffic
As a result, Active Distance Assist
DISTRONIC may neither give warnings nor
intervene in such situations. There is a risk
of an accident.
Always pay careful attention to the traffic
situation and be ready to brake.
GWARNING
Active Distance Assist DISTRONIC cannot
always clearly identify other road users and
complex traffic situations.
In such cases, Active Distance Assist
DISTRONIC can:
Rgive an unnecessary warning and then
brake the vehicle
Rneither give a warning nor intervene
Raccelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, especially if Active Distance Assist
DISTRONIC warns you.
GWARNING
Active Distance Assist DISTRONIC brakes
your vehicle with up to 50% of the maximum
possible deceleration. If this deceleration is
not sufficient, Active Distance Assist
DISTRONIC alerts you with a visual and
acoustic warning. There is a risk of an acci-
dent.
Adjust your speed in these cases and main-
tain sufficient distance.
Apply the brakes yourself and/or take eva-
sive action.
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in front on the edge of the road because ofits narrow width. The distance to the vehiclein front will be too short.
RObstacles and stationary vehicles: ActiveDistance Assist DISTRONIC does not brakefor obstacles or stationary vehicles. If, forexample, the detected vehicle turns a cor-ner and an obstacle or stationary vehicle isrevealed, Active Distance Assist DISTRONICwill not brake for them.
RActive Distance Assist DISTRONIC may mis-takenly detect vehicles that are crossingyour lane. If you activate Active DistanceAssist DISTRONIC under the following condi-tions, the vehicle could pull away uninten-tionally:
-at traffic lights with crossing traffic, forexample
-if there is a vehicle in front, after a cross-ing, with the HOLD function activated
In such situations, brake if necessary. ActiveDistance Assist DISTRONIC will then be deacti-vated.
HOLD function
General notes
The HOLD function can assist the driver in thefollowing situations:
RWhen pulling away, especially on steepslopes
RWhen maneuvering on steep slopes
RWhen waiting in traffic
The vehicle is kept stationary without thedriver having to depress the brake pedal.
The braking effect is canceled and the HOLDfunction deactivated when you depress theaccelerator pedal to pull away.
Important safety notes
GWARNING
If the vehicle is only braked using the HOLD
function, the vehicle may roll away in the fol-
lowing situations when you leave the vehi-
cle:
Rif there is a malfunction in the system or
in the voltage supply
Rif the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant
There is a risk of an accident.
Always deactivate the HOLD function and
secure the vehicle against rolling away
before you leave it.
!When Active Distance Assist DISTRONICor the HOLD function is activated, the vehi-cle brakes automatically in certain situa-tions.
To avoid damage to the vehicle, deactivateActive Distance Assist DISTRONIC and theHOLD function in the following or similar sit-uations:
Rwhen towing the vehicle
Rin the car wash
Deactivate the HOLD function (Ypage 166).
Activation conditions
You can activate the HOLD function if:
Rthe vehicle is stationary
Rthe engine is running or if it has been auto-matically switched off by the ECO start/stop function
Rthe driver's door is closed or your seat beltis fastened
Rthe electric parking brake is released
RActive Distance Assist DISTRONIC is deacti-vated
Rthe transmission is in position[,^or\\on vehicles with automatic transmission
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DSR
General notes
iDSR (Downhill Speed Regulation) is onlyavailable for vehicles with the ON&OFF-ROAD package.
DSR is an aid to assist you when driving down-hill. It keeps the speed of travel at the speedselected on the on-board computer. Thesteeper the downhill gradient, the greater theDSR braking effect on the vehicle. When driv-ing on flat stretches of road or on an uphillgradient, the DSR braking effect is minimal ornonexistent.
DSR controls the vehicle’s speed when it isactivated and the transmission is in position[,^or\\. You can drive at a higher or alower speed than that set on the on-boardcomputer at any time by accelerating or brak-ing.
Important safety notes
GWARNING
If the speed driven and the set speed devi-
ate and you activate DSR on a slippery road
surface, the wheels may lose traction. There
is an increased danger of skidding and acci-
dents.
Before switching DSR on, please take into
consideration the road surface and the dif-
ference between driving speed and the set
speed.
If you fail to adapt your driving style, DSR canneither reduce the risk of accident nor over-ride the laws of physics. DSR cannot takeaccount of road, weather and traffic condi-tions. DSR is only an aid. You are responsiblefor the distance to the vehicle in front, forvehicle speed, for braking in good time and forstaying in your lane.
You are always responsible for keeping controlof the vehicle and for assessing whether thedownhill gradient can be managed. DSR maynot always be able to keep to the set speed,depending on road surface and tire conditions.Select a set speed suitable for the prevailingconditions and when necessary, apply thebrakes manually.
Further information about "Driving off-road"(Ypage 153).
Activating/deactivating DSR
If you activate DSR and no speed has beenset, the vehicle decelerates to 4 mph (Canada:6 km/h).
You can only activate DSR when driving atspeeds below 19 mph (Canada: 30 km/h).
Activating DSR
XPress buttonC.Indicator lampDlights up.
The status indicator in the multifunction dis-play shows, e.g.DSR 6 km/hDSR 6 km/h.
If the current vehicle speed is too high, theDSR symbol appears on the multifunction dis-play. You will also see the message:Max.Max.Speed 30 km/hSpeed 30 km/h.
If you enter or exit a parking space usingActive Parking Assist, and press buttonC,indicator lampDflashes. DSR can then notbe switched on.
Deactivating DSR
XPress buttonC.Indicator lampDgoes out.
The DSR symbol appears in the multifunc-tion display with theOffOffmessage.
DSR is deactivated automatically if you drivefaster than 22 mph (Canada: 35 km/h). TheDSR symbol appears in the multifunction dis-play along with theOffOffmessage. You alsohear a warning tone.
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