engine MERCEDES-BENZ GLA 2016 Owner's Guide

X
Turn the SmartKey to position 1 or 2 in the
ignition lock ( Y
page 149).X
Press or pull the W switch in the corre-
sponding direction.
If you press/pull the W switch beyond the
point of resistance, automatic operation is
started in the corresponding direction. You
can stop automatic operation by pressing/
pulling the switch again.
After opening the sliding sunroof, the roller
sunblind closes slightly automatically. This
reduces drafts in the vehicle interior.
If the sliding sunroof is raised at the rear, it
lowers slightly automatically at higher
speeds. The noise level in the vehicle interior
is reduced as a result.
At low speeds it raises again automatically.
You can also temporarily deactivate auto-
matic lowering. To do so, press the W
switch. The sliding sunroof raises again auto-
matically.
You can continue to operate the sliding sun-
roof after switching off the engine or remov-
ing the SmartKey from the ignition lock. This
function remains active for five minutes or
until you open a front door.
The sliding sunroof cannot be opened if a roof
carrier is installed. In order to allow ventila-
tion of the vehicle interior, you can raise the
sliding sunroof.
If contact is made with a roof carrier approved
by Mercedes-Benz, the sliding sunroof lowers
slightly but remains raised at the rear.
Rain-closing feature
The rain-closing feature is only available for
vehicles with a rain sensor.
When the SmartKey is in position 0 in the
ignition lock or is removed, the sliding sunroof
closes automatically: R
if it starts to rain. R
at extreme outside temperatures. R
after six hours. R
if there is a malfunction in the power sup-
ply.
The panorama roof with power tilt/sliding
panel remains raised at the rear in order to
allow ventilation of the vehicle interior.
If the panorama roof with power tilt/sliding
panel is obstructed while being closed by the
rain-closing feature, it opens again slightly.
The rain-closing feature is then deactivated.
The panorama roof with power tilt/sliding
panel does not close if: R
it is raised at the rear. R
it is blocked. R
no rain is falling on the area of the wind-
shield being monitored by the rain sensor.
If the vehicle is under a bridge or in a car-
port, for example, the field of the sensor
may be covered.
Operating the roller sunblind for the
panorama roof with power tilt/sliding
panel
Important safety notes
G WARNING
Parts of the body could become trapped
between the roller sunblind and frame or slid-
ing sunroof during automatic opening or clos-
ing. There is a risk of injury.
When opening or closing, make sure that no
body parts are in the sweep of the roller sun-
blind.
If somebody becomes trapped: R
release the switch immediately, or R
during automatic operation, push the
switch briefly in any direction
The opening or closing procedure will be stop-
ped.
The roller sunblind shields the vehicle interior
from sunlight. The roller sunblind can only be
opened and closed when the panorama roof
with power tilt/sliding panel is closed.96
Panorama roof with power tilt/sliding panel
Opening and closing

Useful information
i This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops ( Y
page 25).
Correct driver's seat position
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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. X
Observe the safety guidelines on seat
adjustment ( Y
page 103). X
Make sure that seat

The seat belt should: R
fit snugly across your body R
be routed across the middle of your
shoulder R
be routed in your pelvic area across the
hip joints X
Before starting off, adjust the rear-view mir-
ror and the exterior mirrors ( Y
page 109) in
such a way that you have a good view of
road and traffic conditions. X
Vehicles with a memory function: save
the seat and exterior mirror settings
( Y
page 112).
Seats
Important safety notes
G WARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when there is
no SmartKey in the ignition lock.
G WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
( Y
page 48) and "Children in the vehicle"
( Y
page 58).
G WARNING
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.
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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.
G WARNING
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 adjust-
ment 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 sys-
tem.
! To avoid damage to the seats and the seat
heating, observe the following information: R
keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible. R
if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats. R
clean the seat covers as recommended;
see the "Interior care" section. R
do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible. R
when the seat heating is in operation, do
not cover the seats with insulating mate- Seats 103
Seats, steering wheel and mirrors Z

Problems with the seat heating Problem
Possible causes/consequences and P Solutions
The seat heating has
switched off prema-
turely or cannot be
switched on. The on-board voltage is too low because too many electrical con-
sumers are switched on. X
Switch 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
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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.
G WARNING
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. Never
leave children unsupervised in the vehicle.
Adjusting the steering wheel
G WARNING
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.
C
Release lever D
Adjusts the steering wheel height

Mirrors
Rear-view mirror X
Anti-glare mode: flick anti-glare lever C
forwards or back.
Exterior mirrors
Adjusting the exterior mirrors
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steering wheel or mirrors R
fasten 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.
G WARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder. X
Turn the SmartKey to position 1 or 2 in the
ignition lock ( Y
page 149). X
Press button C for the left-hand exterior
mirror or button D for the right-hand exte-
rior mirror.
The indicator lamp in the corresponding
button lights up in red.
The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustment button

matically depending on the brightness of
the ambient light. R
With the engine running: if you have acti-
vated the daytime running lamps function
via the on-board computer, the daytime
running lamps or the parking lamps and the
low-beam headlamps are switched on or off
automatically depending on the brightness
of the ambient light. X
To switch on the automatic headlamp
mode: turn the light switch to the X
position.
G WARNING
When the light switch is set to X , the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
X .
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times.
Canada only:
The daytime running lamps improve the visi-
bility of your vehicle during the day. The day-
time running lamps function is required by law
in Canada. It cannot therefore be deactivated.
When the engine is running and the vehicle is
stationary: if you move the selector lever from
a drive position to P , the daytime running
lamps/low-beam headlamps go out after
three minutes.
When the engine is running, the vehicle is
stationary and in bright ambient light: if you
turn the light switch to the ` position, the
daytime running lamps and parking lamps
turn on.
If the engine is running and you turn the light
switch to the X position, the manual set-
tings take precedence over the daytime run-
ning lamps.
USA only: The daytime running lamps improve the visi-
bility of your vehicle during the day. To do this,
the daytime running lamps function must be
switched on using the on-board computer
( Y
page 230).
If the engine is running and you turn the light
switch to the ` or X position, the man-
ual settings take precedence over the day-
time running lamps.
Low-beam headlamps
Even if the light sensor does not detect that it
is dark, the parking lamps and low-beam
headlamps switch on when the ignition is
switched on and the light switch is set to the
X position. This is a pa rticularly useful
fu nction in the event of rain and fog. X
To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine. X
Turn the light switch to X .
The green X indicator 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 vis-
ibility 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 head-
lamps. X
To switch on the fog lamps: turn the key
in the ignition lock to position 2 or start the
engine. X
Turn the light switch to X or X .X
Press the Z button.
The green Z indicator lamp in the instru-
ment cluster lights up. X
To switch off the fog lamps: press the
Z button.
The green Z indicator lamp in the instru-
ment cluster goes out. Exterior lighting 117
Lights and windshield wipers Z

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-
specific regulations for the use of rear fog
lamps. X
To switch on the rear fog lamp: turn the
SmartKey in the ignition lock to position 2
or start the engine. X
Turn the light switch to X or X .X
Press the ^ button.
The yellow ^ indicator lamp in the
instrument cluster lights up. X
To switch off the rear fog lamp: press the
^ button.
The yellow ^ indicator lamp in the
instrument cluster goes out.
Parking lamps
! If the battery has been excessively dis-
charged, the parking lamps or standing
lamps are automatically switched off to
enable the next engine start. Always park
your vehicle safely and sufficiently lit
according to legal standards. Avoid the
continuous use of the ` parking lamps
for several hours. If possible, switch on the
d right or the c left standing lamp.X
To switch on: turn the light switch to ` .
The green ` indicator lamp in the instru-
ment cluster lights up.
Standing lamps
Switching on the standing lamps ensures the
corresponding side of the vehicle is illumina-
ted. X
To switch on the standing lamps: the
SmartKey should not be in the ignition lock
or it should be in position 0 .X
Turn the light switch to c (left-hand side
of the vehicle) or d (right-hand side of
the vehicle). Combination switch
Turn signal
C
High-beam headlamps D
Turn signal, right

High-beam flasher X
To switch on: turn the SmartKey in the
ignition lock to position 1 or 2 , or start the
engine. X
Pull the combination switch in the direction
of arrow

adjusted using COMAND or Audio 20 (see the
separate Operator's Manual).
Manual interior lighting control X
To switch the front interior lighting on:
set the switch to the J position.X
To switch the front interior lighting off:
set the switch to the 3 position or (if the
door is closed) to the center position. X
To switch the rear interior lighting on or
off: press the B button.X
To switch the reading lamp on or off:
press the = button.
Crash-responsive emergency lighting The interior lighting is activated automatically
if the vehicle is involved in an accident. X
To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X
Lock and then unlock the vehicle using the
SmartKey.
Replacing bulbs
Important safety notes
Xenon bulbs
G DANGER
Xenon bulbs carry a high voltage. You can get
an electr ic shock if you remove the cover of
the Xenon bulb and touch the electrical con-
tacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the Xenon bulb. Alwa ys have work on
the Xenon bulbs carried out at a qualif ied spe-
cialist worksho p.
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbs
G WARNING
Bulbs, lamps and connectors can get very hot
when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before
changing a bulb.
Do not use a bulb that has been dropped or if
its glass tube has been scratched.
The bulb may explode if: R
you touch it R
it is hot R
you drop it R
you scratch it
Only operate bulbs in enclosed lamps
designed for that purpose. Only install spare
bulbs of the same type and the specified volt-
age.
Marks on the glass tube reduce the service
life of the bulbs. Do not touch the glass tube
with your bare hands. If necessary, clean the
glass tube when cold with alcohol or spirit and
rub it off with a lint-free cloth.
Protect bulbs from moisture during opera-
tion. Do not allow bulbs to come into contact
with liquids.
There are bulbs other than the Xenon bulbs
that you cannot replace. Only replace the
bulbs listed ( Y
page 122). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
If the new bulb still does not light up, consult
a qualified specialist workshop. Replacing bulbs 121
Lights and windshield wipers Z

Useful information
i This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops ( Y
page 25).
Overview of climate control systems
General notesObserve the settings recommended on the
following pages. The windows could other-
wise fog up.
To prevent the windows from fogging up: R
switch off climate control only briefly R
switch on air-recirculation mode only
briefly R
switch on the cooling with air dehumidifi-
cation function R
switch on the defrost windshield function
briefly, if required
The air-conditioning system/dual-zone auto-
matic climate control regulates the tempera-
ture and the humidity of the vehicle interior
and filters out undesirable substances from
the air.
The air-conditioning system/dual-zone auto-
matic climate control can only be operated
when the engine is running. Optimum opera-
tion is only achieved with the side windows
and panorama roof with power tilt/sliding
panel closed.
If you start the engine using your smartphone,
the last selected climate control setting is
reactivated ( Y
page 171). The residual heat function can only be acti-
vated or deactivated with the ignition
switched off ( Y
page 143).
Always keep the ventilation flaps behind the
side trim panel in the cargo compartment
clear ( Y
page 124). Otherwise the vehicle will
not be ventilated correctly.
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature ( Y
page 91). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly.
i The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol-
lutants and odors. A clogged filter reduces
the amount of air supplied to the vehicle
interior. For this reason, you should always
observe the interval for replacing the filter,
which is specified in the Maintenance
Booklet. As it depends on environmental
conditions, e.g. heavy air pollution, the
interval may be shorter than stated in t he
Main tenance Booklet.
i It is possible that under certain circum-
stances the residual heat function may be
activated automatically an hour after the
SmartKey has been removed in order to dry
the automatic climate control. The vehicle
is then ventilated for 30 minutes.132
Overview of climate control systems
Climate control