warning MERCEDES-BENZ GLA 2019 Repair Manual

XTurn the SmartKey to positionGorHinthe ignition lock (Ypage 125).
XPress or pull theWswitch in the corre-sponding direction.
If you press/pull theWswitch beyond thepoint of resistance, automatic operation isstarted in the corresponding direction. Youcan stop automatic operation by pressing/pulling the switch again.
After opening the sliding sunroof, the rollersunblind closes slightly automatically. Thisreduces drafts in the vehicle interior.
If the sliding sunroof is raised at the rear, itlowers slightly automatically at higher speeds.The noise level in the vehicle interior isreduced as a result.
At low speeds it raises again automatically.
You can also temporarily deactivate automaticlowering. To do so, press theWswitch. Thesliding sunroof raises again automatically.
You can continue to operate the sliding sun-roof after switching off the engine or removingthe SmartKey from the ignition lock. This func-tion remains active for five minutes or untilyou open a front door.
The sliding sunroof cannot be opened if a roofcarrier is installed. In order to allow ventilationof the vehicle interior, you can raise the slidingsunroof.
If contact is made with a roof carrier approvedby Mercedes-Benz, the sliding sunroof lowersslightly but remains raised at the rear.
Rain-closing feature
The rain-closing feature is only available forvehicles with a rain sensor.
When the SmartKey is in positionZin theignition lock or is removed, the sliding sunroofcloses automatically:
Rif it starts to rain.
Rat extreme outside temperatures.
Rafter six hours.
Rif there is a malfunction in the power supply.
The panorama roof with power tilt/slidingpanel remains raised at the rear in order toallow ventilation of the vehicle interior.
If the panorama roof with power tilt/slidingpanel is obstructed while being closed by therain-closing feature, it opens again slightly.The rain-closing feature is then deactivated.
The panorama roof with power tilt/slidingpanel does not close if:
Rit is raised at the rear.
Rit is blocked.
Rno rain is falling on the area of the wind-shield being monitored by the rain sensor. Ifthe vehicle, for example, is under a bridge orin a carport, the field of the sensor may becovered.
Operating the roller sunblind for the
panorama roof with power tilt/slid-
ing panel
Important safety notes
GWARNING
Parts of the body could become trapped
between the roller sunblind and frame or
sliding sunroof during automatic opening or
closing. There is a risk of injury.
When opening or closing, make sure that no
body parts are in the sweep of the roller
sunblind.
If somebody becomes trapped:
Rrelease the switch immediately, or
Rduring automatic operation, push the
switch briefly in any direction
The opening or closing procedure will be
stopped.
The roller sunblind shields the vehicle interiorfrom sunlight. The roller sunblind can only beopened and closed when the panorama roofwith power tilt/sliding panel is closed.
Roller sunblind reversing feature
The roller sunblind is equipped with an auto-matic reversing feature. If a solid object blocksor restricts the roller sunblind during the clos-ing process, the roller sunblind opens againautomatically. The automatic reversing featureis only an aid and is not a substitute for yourattentiveness when closing the roller sunblind.
Panorama roof with power tilt/sliding panel89
Opening and closing
Z

GWARNING
The reverse function does not react in par-
ticular:
Rto soft, light and thin objects, e.g. fingers
Rwhen closing the roller sunblind again
manually immediately after automatic
reversing
This means that the reversing feature can-
not prevent someone being trapped in these
situations. There is a risk of injury.
When closing the roller sunblind, make sure
that no body parts are in the range of move-
ment.
If somebody becomes trapped:
Rrelease the button immediately, or
Rbriefly push the button in any direction
during automatic closing.
The closing process is stopped.
Opening and closing
COpens
DOpens

Problems with the panorama roof with power tilt/sliding panel
GWARNING
If you do not reset the sliding sunroof after a malfunction or a voltage drop, then the reversing
feature will malfunction or not work. The sliding sunroof closes with increased or maximum
force. Parts of the body could be trapped in the closing area in the process. This poses an
increased risk of injury or even fatal injury.
In such or similar situations always make sure that no parts of the body are in the closing area.
Always reset the sliding sunroof after a malfunction or a voltage drop.
!If the sliding sunroof still cannot be opened or closed as a result of a malfunction, contact aqualified specialist workshop.
ProblemPossible causes/consequences andPPSolutions
The panorama roof withpower tilt/sliding panelcannot be closed andyou cannot see thecause.
If the panorama roof with power tilt/sliding panel is obstructed dur-ing closing and reopens again slightly:
XImmediately after it blocks, pull theWswitch down again tothe point of resistance until the panorama roof with power tilt/sliding panel is closed.The panorama roof with power tilt/sliding panel is closed withmore force.
If the panorama roof with power tilt/sliding panel is obstructedagain during closing and reopens again slightly:
XImmediately after it blocks, pull theWswitch down again tothe point of resistance until the panorama roof with power tilt/sliding panel is closed.The panorama roof with power tilt/sliding panel is closed withoutthe automatic reversing feature.
The panorama roof withpower tilt/sliding panelcannot be opened orclosed using the conve-nience opening/closingfeature.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if neces-sary (Ypage 72).
Panorama roof with power tilt/sliding panel91
Opening and closing
Z

Correct driver's seat position
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
Observe the following when adjusting steeringwheelC, seat beltDand driver's seat

GWARNING
If the driver's seat is not engaged, it could
move forwards as far as the next catch dur-
ing movement such as braking or abrupt
changes of direction. As a result, you would
be pushed against your seat belt by the
unsecured driver's seat.
This could cause you to lose control of the
vehicle. The seat belt cannot protect as
intended and could result in additional
injury.
There is a risk of an accident and injury.
Before every journey, make sure that the
driver's seat is fully engaged.
Observe the safety notes on "Air bags"(Ypage 44) and "Children in the vehicle"(Ypage 53).
GWARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion. This could cause you to lose control
of the vehicle. There is a risk of an accident.
Always make sure that the driver's seat is
engaged before starting the vehicle.
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
GWARNING
If you adjust the seat height carelessly, you
or other vehicle occupants could be trapped
and thereby injured. Children in particular
could accidentally press the electrical seat
adjustment buttons and become trapped.
There is a risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under
the lever assembly of the seat adjustment
system.
!To prevent damage to the seats and theseat heating, observe the following notes:
RDo not spill liquids onto the seats. Dry theseats as soon as possible if liquid doesget spilled on the seats.
RIf the seat covers are damp or wet, do notswitch on the seat heating. Also, do notuse the seat heating to dry the seats.
RClean the seat covers as recommended;see the "Interior care" section.
RDo not transport heavy loads on theseats. Do not place pointed objects onthe seat cushions such as knives, nails ortools. Where possible, use the seats onlyfor carrying passengers.
RWhen operating the seat heating, do notcover the seats with insulating materials,e.g. blankets, coats, bags, protective cov-ers, child seats or booster seats.
RWhen the seat heating is switched on, theseat surface can be damaged as a resultof objects being placed on the seats, forexample, seat cushions, child seats andprotective covers not approved byMercedes-Benz.
!Make sure that there are no objects in thefootwell under or behind the seats whenmoving the seats back. There is a risk thatthe seats and/or the objects could be dam-aged.
iFurther related subjects:
RCargo compartment enlargement (foldingdown the rear seats) (Ypage 253)
Seats93
Seats, steering wheel and mirrors
Z

Adjusting the head restraints
Important safety notes
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
GWARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased
risk of injury in the head and neck area, e.g.
in the event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
Using the fore-and-aft adjustment, adjust thehead restraint so that it is as close as possibleto your head.
General notes
For vehicles with sports seats you cannotadjust the front head restraints or the outerrear head restraints.
Adjusting the head restraints manually
Adjusting the head restraint height
XTo raise:pull the head restraint up to thedesired position.
XTo lower:press release catchCin thedirection of the arrow and push the headrestraint down to the desired position.
Adjusting the fore/aft position of the
head restraint
With this function you can adjust the distancebetween the head restraint and the back ofthe seat occupant's head.
XTo move forwards:pull the head restraintforwards in the direction of the arrow until itengages.There are several notches.
XTo move backwards:press and holdrelease buttonCand push the headrestraint backwards.
XWhen the head restraint is in the desiredposition, release the button and make surethat the head restraint is engaged in posi-tion.
Seats95
Seats , ste ering wheel and mirrors
Z

The three red indicator lamps in the buttonindicate the heating level you have selected.
The system automatically switches down fromlevel3to level2after approximately eightminutes.
The system automatically switches down fromlevel2to level1after approximately tenminutes.
The system automatically switches off approx-imately 20 minutes after it is set to level1.
XTurn the SmartKey to positionGorHinthe ignition lock (Ypage 125).
XTo switch on:press buttonCrepeatedlyuntil the desired heating level is set.
XTo switch off:press buttonCrepeatedlyuntil all the indicator lamps go out.
iIf the battery voltage is too low, the seatheating may switch off.
Problems with the seat heating
ProblemPossible causes/consequences andPPSolutions
The seat heating hasswitched off prema-turely or cannot beswitched on.
The on-board voltage is too low because too many electrical con-sumers are switched on.
XSwitch off electrical consumers that you do not need, such as therear window defroster or interior lighting.Once the battery is sufficiently charged, the seat heating willswitch back on automatically.
Steering wheel
Important safety notes
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
Never leave children unsupervised 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.
Adjusting the steering wheel
GWARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Steering wheel97
Seats, steering wheel and mirrors
Z

Memory function
Important safety notes
GWARNING
If you use the memory function on the driv-
er's side while driving, you could lose con-
trol of the vehicle as a result of the adjust-
ments being made. There is a risk of an acci-
dent.
Only use the memory function on the driv-
er's side when the vehicle is stationary.
GWARNING
When the memory function adjusts the seat,
you and other vehicle occupants – particu-
larly children – could become trapped. There
is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat. If somebody
becomes trapped, immediately release the
memory function position button. The
adjustment process is stopped.
GWARNING
Children could become trapped if they acti-
vate the memory function, particularly when
unattended. There is a risk of injury.
Never leave children unsupervised 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.
The memory function can be used at any time,e.g. even when the SmartKey is not in the igni-tion lock.
Storing settings
With the memory function, you can store up tothree different settings, e.g. for three differentpeople.
The following settings are stored as a singlememory preset:
RSeat and backrest position
RDriver's side: position of the exterior mirrorson the driver's and front-passenger sides
XAdjust the seat (Ypage 94).
XAdjust the exterior mirror on the driver'sside (Ypage 98).
XBriefly press theMmemory button and thenpress preset position button1,2or3withinthree seconds.The settings are stored in the selected pre-set position. A tone sounds when the set-tings have been completed.
Calling up a stored setting
XPress and hold the relevant preset positionbutton1,2or3until the seat and exteriormirrors are in the stored position.
iThe setting procedure is interrupted assoon as you release the storage positionbutton.
Memory function101
Seats, steering wheel and mirrors
Z

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.
Air vents123
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
Driving and parking