2019 MERCEDES-BENZ GLA start stop button

KEYLESS-GO start function
General notes
Bear in mind that the engine can be started byany of the vehicle occupants if there is aSmartKey in the vehicle.
Changing the settings of the locking
system
You can change the settings of the lockingsystem. This means that only the driver's doorand the fuel filler flap are unlocked when thevehicle is unlocked. This is useful if you fre-quently travel on your own.
XTo change the setting:press and hold the6and7buttons simultaneously forapproximately six seconds until the batteryindicator lamp flashes twice (Ypage 72).
If the setting of the locking system is changedwithin the signal range of the vehicle, pressingthe7or6button:
Rlocks or
Runlocks the vehicle
The SmartKey now functions as follows:
XTo unlock:press the6button once.
XTo unlock centrally:press the6buttontwice.
XTo lock centrally:press the7button.
The KEYLESS-GO function is changed as fol-lows:
XTo unlock the driver's door:touch theinner surface of the door handle on the driv-er's door.
XTo unlock centrally:touch the inner sur-face of the door handle on the front-passenger door or the rear door.
XTo lock centrally:touch the outer sensorsurface on one of the door handles.
XTo restore the factory settings:press andhold the6and7buttons simultane-ously for approximately six seconds until thebattery check lamp flashes twice(Ypage 72).
Mechanical key
General notes
If the vehicle can no longer be locked orunlocked with the SmartKey or KEYLESS-GO,use the mechanical key.
If you use the mechanical key to unlock andopen the driver's door or the trunk lid, theanti-theft alarm system will be triggered(Ypage 68).
There are several ways to turn off the alarm:
XTo deactivate the alarm with the key:press the6or7button on the key.
or
XInsert the SmartKey into the ignition lock.
or
XTo deactivate the alarm with KEYLESS-GO:press the Start/Stop button in the igni-tion lock. The SmartKey must be in the vehi-cle.
or
XLock or unlock the vehicle using KEYLESS-GO. The SmartKey must be outside the vehi-cle.
If you unlock the vehicle using the mechanicalkey, the fuel filler flap will not be unlockedautomatically.
XTo unlock the fuel filler flap:insert theSmartKey into the ignition lock.
Removing the mechanical key
SmartKey71
Opening and closing
Z

ProblemPossible causes/consequences andPPSolutions
You can no longer lockor unlock the vehicleusing KEYLESS-GO.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if neces-sary (Ypage 72).
If this does not work:
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using themechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using themechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of theSmartKey.
XHave the vehicle and SmartKey checked at a qualified specialistworkshop.
If the vehicle can also not be locked/unlocked using the remotecontrol function:
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using themechanical key.
XHave the vehicle and SmartKey checked at a qualified specialistworkshop.
The engine cannot bestarted using the Smart-Key.
The on-board voltage is too low
XSwitch off non-essential consumers, e.g. seat heating or interiorlighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary(Ypage 294).
or
XJump-start the vehicle (Ypage 295).
or
XConsult a qualified specialist workshop.
The engine cannot bestarted using the Start/Stop button. The Smart-Key is in the vehicle.
The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if neces-sary (Ypage 72).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
74SmartKey
Opening and closing

GWARNING
If objects, luggage or loads are not secured
or not secured sufficiently, they could slip,
tip over or be flung around and thereby hit
vehicle occupants. There is a risk of injury,
particularly in the event of sudden braking
or a sudden change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The tailgate swings upwards and to therear when opened. Therefore, make surethat there is sufficient clearance above andbehind the tailgate.
The opening dimensions of the tailgate can befound in the "Vehicle data" section(Ypage 339).
You should preferably place luggage or loadsin the cargo compartment. Observe the load-ing guidelines (Ypage 250).
Do not leave the SmartKey in the cargo com-partment. You could otherwise lock yourselfout.
The tailgate can be:
Ropened and closed manually from outside
Rvehicles with EASY-PACK tailgate:opened/closed automatically from the out-side
Rvehicles with EASY-PACK tailgate:opened/closed automatically from theinside
Rvehicles with EASY-PACK tailgate andwith KEYLESS-GO or KEYLESS-GO startfunction:closed with the remote operatingswitch on the SmartKey
Rreleased with the emergency release fromthe inside
Tailgate obstruction detection with
reversing feature
On vehicles with an EASY-PACK tailgate, thetailgate is equipped with automatic obstaclerecognition with a reversing feature. If a solidobject blocks or restricts the tailgate whenautomatically opening or closing, this proce-dure is stopped. If the tailgate is stopped dur-
ing the closing process, the tailgate automati-cally opens again slightly. The automaticobstruction detection with reversing feature isonly an aid. It is not a substitute for your atten-tiveness when opening and closing the tail-gate.
GWARNING
The reversing feature does not respond:
Rto soft, light and thin objects, e.g. fingers
Rover the last 1/3 in (8 mm) of the closing
movement
The reversing feature cannot prevent some-
one from becoming trapped in these situa-
tions in particular. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rpress theTbutton on the SmartKey,
or
Rpull or press the remote operating switch
on the driver's door or
Rpress the closing button/STOP button in
the tailgate or
Rpull the handle on the tailgate
Vehicles with HANDS-FREE ACCESS:it isalso possible to stop the closing process byperforming a kicking movement under the rearbumper.
Opening and closing manually
Opening
78Cargo compartment
Opening and closing

XTo close:press buttonCon the tailgate.
or
XVehicles with EASY-PACK tailgate andKEYLESS-GO or KEYLESS-GO start func-tion:if the SmartKey is located in the imme-diate vicinity of the vehicle, press theTbutton on the SmartKey.You can release the button as soon as thetailgate starts to close.
XTo stop the closing process: press but-tonCon the tailgate again.
or
XPull the handle in the tailgate.
or
XPress theTbutton on the SmartKeyuntil the tailgate stops.
or
XPress or pull the remote operating switch onthe driver's door.
HANDS-FREE ACCESS
Important safety notes
GWARNING
The vehicle exhaust system can become
very hot. If you use HANDS-FREE ACCESS,
you could burn yourself by touching the
exhaust system. There is a risk of injury.
Always ensure that you make the kicking
movement only within the detection range of
the sensors.
!If the SmartKey is within the rear detectionrange of KEYLESS-GO, the following situa-tions, for example, could lead to the unin-tentional opening of the tailgate:
Rwhen using an automatic car wash
Rwhen using a power washer
Make sure that the SmartKey is at least10 ft (3m) away fromthe vehicle.
iYou can also deactivate KEYLESS-GO. Fur-ther information on deactivating and activat-ing KEYLESS-GO (Ypage 70).
General notes
With KEYLESS-GO and HANDS-FREE ACCESS,you can open or close the tailgate or stop theprocedure without using your hands. This isuseful if you have your hands full. To do this,make a kicking movement under the bumperwith your foot.
Observe the following points:
RCarry your KEYLESS-GO key about your per-son. The SmartKey must be at the rear ofthe vehicle in the detection range of KEY-LESS-GO.
RWhen making the kicking movement, makesure that you are standing firmly on theground and that there is sufficient clearanceto the rear of the vehicle. You could other-wise lose your balance, for example on ice.
RAlways ensure that you only make the kick-ing movement within the detection range ofsensorsC.
RStand at least 12 in (30 cm) away from therear area while doing so.
RDo not come into contact with the bumperwhile making the kicking movement. Other-wise, the sensors may not function cor-rectly.
RHANDS-FREE ACCESS does not functionduring engine start.
RDirt caused by road salt or snow aroundsensorsCmay restrict functionality.
Using the HANDS-FREE ACCESS with aprosthetic leg may restrict functionality.
RIf a KEYLESS-GO key is at the rear of thevehicle in the detection range of KEYLESS-GO, HANDS-FREE ACCESS could be trig-
80Cargo compartment
Opening and closing

!Only open the sliding sunroof if it is free ofsnow and ice. Otherwise, malfunctions mayoccur.
Do not allow anything to protrude from thesliding sunroof. Otherwise, the seals couldbe damaged.
!The weather can change abruptly. It couldstart to rain or snow. Make sure that thesliding sunroof is closed when you leave thevehicle. The vehicle electronics can be dam-aged if water enters the vehicle interior.
iResonance noises can occur in addition tothe usual airflow noises when the slidingsunroof is open. They are caused by minorpressure fluctuations in the vehicle interior.Change the position of the sliding sunroof oropen a side window slightly to reduce oreliminate these noises.
Sliding sunroof reversing feature
In the following section, the term "sliding sun-roof" refers to the panorama roof with powertilt/sliding panel.
The sliding sunroof is equipped with an auto-matic reversing feature. If a solid object blocksor restricts the sliding sunroof during the clos-ing process, the sliding sunroof opens againautomatically. However, the automatic revers-ing feature is only an aid and does not relieveyou of the responsibility of paying attentionwhen closing the sliding sunroof.
GWARNING
The reverse function does not react in par-
ticular:
Rto soft, light and thin objects, e.g. fingers
Rover the last 1/6 in (4 mm) of the closing
path
Rwhile adjusting
Rwhen closing the sliding sunroof 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.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rrelease the button immediately, or
Rbriefly push the button in any direction
during automatic closing.
The closing process is stopped.
GWARNING
If you close the sliding sunroof again imme-
diately after it has been blocked or reset,
the sliding sunroof closes with increased
force.
Parts of the body could be trapped in the
closing area in the process. There is a risk of
injury or becoming trapped.
Make sure that no parts of the body are in
the closing area.
If somebody becomes trapped:
Rrelease the button immediately, or
Rbriefly push the button in any direction
during automatic closing.
The closing process is stopped.
Operating the panorama roof with
power tilt/sliding panel
Opening and closing
CTo raise
DTo open

ual. You will see the current settings of thevarious climate control functions.
DYNAMIC SELECT button (except
Mercedes-AMG vehicles)
You can choose between various drive pro-grams with the DYNAMIC SELECT button(Ypage 132).
If you have selected drive programE:
Rwhen heating, the electrical heater boosteris deactivated and in the warming-up phaseheat output is reduced
Rthe rear window defroster running time isreduced
Depending on the configuration, climate set-tings may also be influenced in the drive pro-gramI.
If you have selected drive programCorS, cli-mate settings are not influenced.
ECO start/stop function
During automatic engine switch-off, the cli-mate control system only operates at areduced capacity. If you require the full cli-mate control output, you can switch off theECO start/stop function by pressing the ECObutton (Ypage 130).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
General notes
When the climate control is switched off, theair supply and air circulation are also switchedoff. The windows could fog up. Therefore,switch off climate control only briefly
Air-conditioning system
XTurn the SmartKey to positionHin the igni-tion lock (Ypage 125).
XTo switch on:turn control

There is a risk of fire and an accident.
Release the parking brake fully before driv-
ing off.
!Do not warm up the engine while station-ary. Pull away immediately. Avoid highengine speeds and full throttle until theengine has reached its operating tempera-ture.
In vehicles with automatic transmission,engage positions P and R only when thevehicle is stationary.
Where possible, avoid spinning the drivewheels when pulling away on slippery roads.You could otherwise damage the drive train.
!Mercedes-AMG vehicles:avoid full-loadoperation and engine speeds greater than5000 rpm when the engine is cold. Thishelps to protect the engine and avoidsuncomfortable driving.
Key positions
SmartKey
ZTo remove the SmartKey
(shift the transmission to position])
GPower supply for some consumers, suchas the windshield wipers
HIgnition (power supply for all consumers)and drive position
ITo start the engine
iThe SmartKey can be turned in the ignitionlock even if it is not the correct SmartKeyfor the vehicle. The ignition is not switchedon. The engine cannot be started.
Start/Stop button
General notes
Vehicles with KEYLESS-GO are equipped withSmartKeys featuring the integrated KEYLESS-GO function and a detachable Start/Stop but-ton.
A check which periodically establishes a radioconnection between the vehicle and theSmartKey determines whether a valid Smart-Key is in the vehicle. This occurs, for example,when starting the engine.
When you insert the Start/Stop button intothe ignition lock, the system needs approx-imately two seconds recognition time. You canthen use the Start/Stop button.
Pressing the Start/Stop button several timesin succession corresponds to the differentSmartKey positions in the ignition lock. This isonly the case if you are not depressing thebrake pedal.
If you depress the brake pedal and press theStart/Stop button, the engine starts immedi-ately.
To start the vehicle without actively using theSmartKey:
Rthe Start/Stop button must be inserted inthe ignition lock
Rthe SmartKey must be in the vehicle
Rthe vehicle must not be locked with theSmartKey or KEYLESS-GO (Ypage 70)
Do not keep the KEYLESS-GO key:
Rwith electronic devices, e.g. a mobile phoneor another SmartKey.
Rwith metallic objects, e.g. coins or metalfoil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the SmartKeyremote control or with KEYLESS-GO, after ashort time:
Ryou will not be able to switch on the ignitionwith the Start/Stop button.
Ryou will no longer be able to start the enginewith the Start/Stop button until the vehicleis unlocked again.
If you lock the vehicle centrally using the but-ton on the front door (Ypage 75), you cancontinue to start the engine with the Start/Stop button.
Driving125
Driving and parking
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