2018 MERCEDES-BENZ GLA SUV key battery

ProblemPossible causes/consequences andMSolutions
You can no longer lock or
unlock the vehicle using
KEYLESS-GO.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if necessary
(Ypage 72).
If this does not work:
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of the
SmartKey.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
XUnlock (Ypage 76) or lock (Ypage 77) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 290).
or
XJump-start the vehicle (Ypage 291).
or
XConsult a qualified specialist workshop.
The engine cannot be
started 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 necessary
(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

XFold the rear seat backrest forwards
(Ypage 251).
XTake the mechanical key out of the SmartKey
(Ypage 71).
XInsert mechanical key;into opening :in
the trim and push it in.
XOpen the tailgate.
XInsert the mechanical key into the SmartKey
(Ypage 72).
Emergency release button
You can open the trunk lid from inside the vehi-
cle with the emergency release button.
XPress emergency release button :briefly.
The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened with
the trunk lid emergency release when the vehi-
cle is stationary or while driving.
The trunk lid emergency release does not open
the trunk lid if the battery is disconnected or
discharged.
Trunk lid emergency release light:
REmergency release button :flashes for
30 minutes after the trunk lid is opened.
REmergency release button :flashes for
60 minutes after the trunk lid is closed.
Side windows
Important safety notes
GWARNING
While opening the side windows, body parts
could become trapped between the side win-
dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win- dow during the opening procedure. If some-
body becomes trapped, release the switch or
pull the switch to close the side window again.
GWARNING
While closing the side windows, body parts in
the closing area could become trapped. There is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or press
the switch to open the side window again.
GWARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle.
Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a side window from traveling
upwards during the automatic closing process,
the side window opens again automatically. Dur-
ing the manual closing process, the side windowonly opens again automatically after the corre-
sponding switch is released. The automatic
reversing feature is only an aid and is no substi-
tute for your attention when closing a side win-
dow.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rwhile resetting
Side windows83
Opening and closing
Z

Resetting the side windows
If a side window can no longer be closed fully,
you must reset it.
XClose all the doors.
XTurn the SmartKey to position1or2 in the
ignition lock (Ypage 124).
XPull the corresponding switch on the door
control panel until the side window is com-
pletely closed (
Ypage 84).
XHold the switch for an additional second. If the side window opens again slightly:
XImmediately pull the corresponding switch on
the door control panel until the side window is
completely closed (
Ypage 84).
XHold the switch for an additional second.
XIf the respective side window remains closed
after the button is released, then it has been
set correctly. If this is not the case, repeat the
steps above.
Problems with the side windows
GWARNING
If you close a side window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature is then not active. 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.
Make sure that no parts of the body are in the closing area. To stop the closing process, release
the switch or push the switch again to reopen the side window.
ProblemPossible causes/consequences and MSolutions
A side window cannot be
closed because it is
blocked by objects, e.g.
leaves in the window
guide.XRemove the objects.
XClose the side window.
A side window cannot be
closed and you cannot
see the cause.If a side window is obstructed during closing and reopens again
slightly:
XImmediately after the window blocks, pull the corresponding switch
again until the side window has closed.
The side window is closed with increased force.
If a side window is obstructed again during closing and reopens again slightly:
XImmediately after the window blocks, pull the corresponding switchagain until the side window has closed.
The side window is closed without the automatic reversing feature.
The side windows cannot
be opened or closed
using the convenience
opening/closing fea-
ture.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72 )and replace it if necessary
(Ypage 72).
86Side windows
Opening and closing

XTurn the SmartKey to position1or2 in the
ignition lock (Ypage 124).
XPull the 3switch repeatedly to the point of
resistance in the direction of arrow :until
the panorama roof with power tilt/sliding
panel is fully closed.
XKeep the 3switch pulled for an additional
second.
XPull the 3switch repeatedly to the point of
resistance in the direction of arrow :until
the roller sunblind is fully closed.
XKeep the 3switch pulled for an additional
second.
XMake sure that the panorama roof with power
tilt/sliding panel and the roller sunblind can
be fully opened and closed again.
XIf this is not the case, repeat the steps above.
Problems with the panorama roof with power tilt/sliding panel
GWARNING
If you do not reset the sliding sunroof after a malfunction or voltage supply interruption, then the
backing up function 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 voltage supply interruption.
!If the sliding sunroof still cannot be opened or closed as a result of a malfunction, contact a
qualified specialist workshop.
ProblemPossible causes/consequences and MSolutions
The panorama roof with
power tilt/sliding panel
cannot be closed and
you cannot see the
cause.If the panorama roof with power tilt/sliding panel is obstructed during
closing and reopens again slightly:
XImmediately after it blocks, pull the3switch down again to the
point of resistance until the panorama roof with power tilt/sliding
panel is closed.
The panorama roof with power tilt/sliding panel is closed with more
force.
If the panorama roof with power tilt/sliding panel is obstructed again
during closing and reopens again slightly:
XImmediately after it blocks, pull the 3switch down again to the
point of resistance until the panorama roof with power tilt/sliding
panel is closed.
The panorama roof with power tilt/sliding panel is closed without
the automatic reversing feature.
The panorama sliding
sunroof cannot be
opened or closed using
the convenience open-
ing/closing feature.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 72) and replace it if necessary
(Ypage 72).
90Panorama roof with power tilt/sliding panel
Opening and closing

The system automatically switches off approx-
imately 20 minutes after it is set to level1.
XTurn the SmartKey to position1or2 in the
ignition lock (Ypage 124).
XTo switch on: press button:repeatedly
until the desired heating level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
heating may switch off.
Problems with the seat heating
ProblemPossible causes/consequences and MSolutions
The seat heating has
switched off prematurely
or cannot be switched
on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will switch
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, steer-
ing 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.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. This
also applies to mobile phones if the "Digital
Car Key in smartphone" function is activated
via the Mercedes me connect web app. Never leave children unsupervised in the vehicle.
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.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
:Release lever
;Adjusts the steering wheel height
=Adjusts the steering wheel position (fore-
and-aft adjustment)
96Steering wheel
Seats, steering wheel and mirrors

Folding the exterior mirrors in or out
electrically
This function is only available in Canada.
XTurn theSmartKey to position 1or2 in th e
ignition loc k (Ypage 124).
XBriefly press :.
Both exterio rmirror sfol din or out .
iMakesure that th eexterio rmirror sare
always folded out fully while driving .They
could otherwise vibrate .
iIf you are driving fasterthan 30 mph
(47 km/h), you can no longer fol din th eexte -
rio rmirrors.
Resetting the exterior mirrors
This function is only available in Canada.
If th ebattery has been disconnected or com-
pletely discharged, th eexterio rmirror smust be
reset .The exterio rmirror swill otherwise no t
fol din when you select th e"Fold in mirror swhen
locking" function in th eon-board computer
(
Ypage 197).
XTurn th eSmartKey to position 1in th eigni-
tion loc k (Ypage 124).
XBriefly press :.
Folding the exterior mirrors in or out
automatically
This function is only available in Canada.
If the"Fold in mirror swhen locking" function is
activated in th eon-board computer
(
Ypage 197):
Rth eexterio rmirror sfol din automatically as
soo nas you loc kth evehicl efrom th eoutside .
Rtheexterio rmirror sfol dout again automati-
call yas soo nas you unlock th evehicl eand then open th
edriver' sor front-passenger
door .
iIf theexterio rmirror shave been folded in
manually, they do no tfol dout .
Exterior mirror pushed out of position
If an exterio rmirror has been pushed out of
position ,procee das follows :
XVehicles without electricall yfolding exte-
rior mirrors :mov eth eexterio rmirror int o
th ecorrect position manually.
XVehicles with electricall yfolding exterior
mirrors (Canad aonly): press and hold mir -
ror-foldin gbutto n (
Ypage 98) until you hear a
click and th emirror engage saudibly int oposi -
tion .
The mirror housing is engage dagain and you
can adjust th eexterio rmirror sas usual
(
Ypage 97).
Automatic anti-glare mirrors
GWARNIN G
Electrolyte may escape if th eglass in an auto -
matic anti-glare mirror breaks .The electrolyt e
is harmful and causes irritation .It must no t
come int ocontact wit hyour skin, eyes, res -
piratory organs or clothing or be swallowed.
Ther eis aris kof injury.
If you come int ocontact wit hth eelectrolyte,
observ eth efollowing:
RRins eoff th eelectrolyt efrom your skin
immediately wit hwater.
RImmediately rinse th eelectrolyt eout of
your eyes thoroughly wit hclean water.
RIf th eelectrolyt eis swallowed, immediately
rinse your mout hout thoroughly. Do no t
induce vomiting .
RIf electrolytecomes int ocontact wit hyour
skin or hair or is swallowed, seek medical
attention immediately.
RImmediately chang eout of clothing whic h
has come int ocontact wit helectrolyte.
RIf an allergic reaction occurs, seek medical
attention immediately.
98Mirrors
Seats, steering wheel and mirrors

When the engine is running, the vehicle is sta-
tionary and in bright ambient light: if you turn the
light switch to theTposition, the daytime
running lamps and parking lamps turn on.
If the engine is running and you turn the light
switch to the Lposition, the manual settings
take precedence over the daytime running
lamps.
USA only:
The daytime running lamps improve the visibility
of your vehicle during the day. To do this, the
daytime running lamps function must be
switched on using the on-board computer
(
Ypage 196).
If the engine is running and you turn the light
switch to the TorL position, the manual
settings take precedence over the daytime run-
ning lamps.
Low-beam headlamps
Even if the light sensor does not detect that it is
dark, the parking lamps and low-beam head-
lamps switch on when the ignition is switched on
and the light switch is set to the Lposition.
This is a particularly useful function in the event
of rain and fog.
XTo switch on the low-beam headlamps:
turn the SmartKey to position 2in the igni-
tion lock or start the engine.
XTurn the light switch to L.
The green Lindicator lamp in the instru-
ment cluster lights up.
Front fog lamps
In conditions where visibility is poor due to fog,
snow or rain, the fog lamps improve visibility as
well as making it easier for other road users to
see you. They can be operated together with the
parking lamps or together with the parking
lamps and low-beam headlamps.
XTo switch on the fog lamps: turn the Smart-
Key to position 2in the ignition lock or start
the engine.
XTurn the light switch to LorÃ.
XPress the Nbutton.
The green Nindicator lamp in the instru-
ment cluster lights up.
XTo switch off the fog lamps: press theN
button.
The green Nindicator lamp in the instru-
ment cluster goes out.
Rear fog lamp
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of thick
fog. Please take note of the country-specif ic
regulat

ions for the use of rear fog lamps.
XTo switch on the rear fog lamp: turn the
SmartKey in the ignition lock to position 2or
start the engine.
XTurn the light switch to LorÃ.
XPress the Rbutton.
The yellow Rindicator lamp in the instru-
ment cluster lights up.
XTo switch off the rear fog lamp: press the
R button.
The yellow Rindicator lamp in the instru-
ment cluster goes out.
Parking lamps
!If the battery charge is very low, the parking
lamps or standing lamps are automatically
switched off to enable the next engine start.
Always park your vehicle safely and in a well lit
area, in accordance with the relevant legal
stipulations. Avoid using the Tparking
lamps over a period of several hours. If pos-
sible, switch on the right-hand Xor left-
hand W standing lamps.
XTo switch on: turn the light switch to T.
The green Tindicator lamp in the instru-
ment cluster lights up.
Standing lamps
Switching on the standing lamps ensures the
corresponding side of the vehicle is illuminated.
XTo switch on the standing lamps: the
SmartKey is not in the ignition lock or it is in
position gin the ignition lock.
XTurn the light switch to W(left-hand side of
the vehicle) or X(right-hand side of the
vehicle).
102Exterior lighting
Lights and windshield wipers

direction you are turning, enabling better visi-
bility in tight bends, for example. It can only be
activated when the low-beam headlamps are
switched on.
Active:
Rif you are driving at speeds below 25 mph
(40 km/h) and switch on the turn signal or
turn the steering wheel
Rif you are driving at speeds between 25 mph
(40 km/h) and 45 mph (70 km/h) and turn
the steering wheel
The cornering lamp may remain lit for a short
time, but is automatically switched off after no
more than three minutes.
Headlamps fogged up on the inside
Certain climatic and physical conditions may
cause moisture to form in the headlamp. This
moisture does not affect the functionality of the
headlamp.
Interior lighting
Overview of interior lighting
Front overhead control panel
:p Switches the left-hand front reading
lamp on or off
;c Switches the front interior lighting on
=vSwitches the rear interior lighting on or
off
?| Switches the front interior lighting/
automatic interior lighting control off
Ap Switches the right-hand front reading
lamp on or off
BSwitches the automatic interior lighting con-
trol on
Rear compartment control panel
Vehicles with a panorama roof with power tilt/slid-
ing panel
:
p Switches the reading lamp on or off
Vehicles without a panorama roof with power tilt/
sliding panel
:
pSwitches the left-hand reading lamp
on/off
;p Switches the right-hand reading lamp
on/off
Interior lighting control
General notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except when the SmartKey is in position 2in
the ignition lock.
The color and brightness of the ambient lighting
are set via the multimedia system (see Digital
Operator's Manual).
104Interior lighting
Lights and windshield wipers