ESP MERCEDES-BENZ GLS 2019 Service Manual

hand seat when viewed in the direction of travel,
R for the right-hand seat when viewed in the
direction of travel.
Folding up/down in the rear compart-
ment Example:
Rswitch
X To fold down: fold the right-hand outer seat
in the second row of seats forwards
(Y page 103).
X Briefly pull switch 0043.
The seat folds up.
X To stop the automatic folding: briefly pull
switch 0043again.
X To fold down: briefly press switch 0043.
The seat folds down.
X To stop the automatic folding: briefly press
switch 0043again.
Folding up/down in the cargo compart-
ment Example:
Lswitch
X To fold down: fold the right-hand outer seat
in the second row of seats forwards
(Y page 103).
X Briefly press switch 0043.
The seat folds up. X
To stop the automatic folding up: briefly
press switch 0043again.
X To fold down: briefly pull switch 0043.
The seat folds down.
X To stop the automatic folding: briefly pull
switch 0043again.
Detachable panel (third row of seats) !
If there are objects underneath the seat, the
seat can no longer be folded up or down fully. The seat could be damaged.
Only drive with the panel completely installed. If you drop objects underneath the seats in the
third row, you can remove the panel in order to
reach beneath the seat.
X To open: fold the corresponding seat up or
down (Y page 101).
X Once the seat is folded halfway up or down,
briefly press the button again to stop the
automatic movement.
X Grasp the panel recess.
X Pull the panel in the direction of the arrow and
remove it.
X To close: fold the corresponding seat up or
down (Y page 101).
X Once the seat is folded halfway up or down,
briefly press the button again to stop the
automatic movement.
X Attach the panel using the guide pins.
X Push the panel downwards until it engages.
X Fold the seat up and down fully to check that
the panel is seated correctly. 102
SeatsSeats, steering wheel and mirrors

Always make sure that the seat and backrest
are engaged as described:
R before traveling with a passenger on a seat
with the EASY-ENTRY/EXIT feature
R after you have adjusted the seat
R after the EASY-ENTRY/EXIT feature has
been used
R after the cargo compartment enlargement
has been folded forwards G
WARNING
The seat does not engage in the entry/exit
position. The seat could fold back suddenly,
e.g. when accelerating, braking, changing
direction suddenly or in the event of an acci-
dent. Persons in the sweep of the seat could
become trapped. There is a risk of injury.
Always fold back a seat which has been folded forwards before you pull away. Make sure thatthe seat and backrest engage fully.
X To lock the seat: fold back the seat until it
engages.
X Fold back the backrest until it engages.
Folding down the seats in the second
row electrically Important safety notes
G
WARNING
If the seat and backrest are not engaged, they can fold forwards, e.g. in the event of sudden
braking or an accident.
R This will cause the vehicle occupants to be
forced into the seat belt by a seat or back-
rest which is not engaged. The seat belt can no longer offer the intended level of pro-
tection and could even cause injuries.
R A child restraint system would no longer be
anchored or positioned correctly and would not be able to perform its required function.
R The seat backrests cannot restrain objects
or loads in the cargo compartment.
There is an increased risk of injury. Always make sure that the seat and backrest
are engaged as described:
R before traveling with a passenger on a seat
with the EASY-ENTRY/EXIT feature
R after you have adjusted the seat
R after the EASY-ENTRY/EXIT feature has
been used
R after the cargo compartment enlargement
has been folded forwards G
WARNING
The seat does not engage in the entry/exit
position. The seat could fold back suddenly,
e.g. when accelerating, braking, changing
direction suddenly or in the event of an acci-
dent. Persons in the sweep of the seat could
become trapped. There is a risk of injury.
Always fold back a seat which has been folded forwards before you pull away. Make sure thatthe seat and backrest engage fully.
General notes
To enter or exit the third row of seats: the outer
left and right seats of the second row can be
folded down electrically.
One of the outer seats of the second row is in the
entry/exit position: the multifunction display
shows, e.g. the 2nd Seat Row, Right Not
2nd Seat Row, Right Not
Locked Locked display message.
If you fold the seat back until it engages, the
display message disappears.
Pull the backrest firmly to ensure that it is fully
engaged.
i Further related subjects:
R Cargo compartment enlargement (folding
the second row of seats forwards)
(Y page 298)
R Folding the seats in the third row forwards/
back (Y page 101)
Folding down the seats
The seats can be folded down electrically if the
vehicle is stationary and the respective rear
door is open. Seats
105Seats, steering wheel and mirrors Z

Position of the steering wheel when the
EASY-ENTRY/EXIT feature is active The steering wheel swings up when you:
R remove the SmartKey from the ignition lock.
R open the driver's door and KEYLESS-GO is in
position 0047.
R open the driver's door and the SmartKey is in
position 0092or0047 in the ignition lock.
i The steering wheel only moves up if it has
not already reached the upper stop.
Position of the steering wheel for driv-
ing The steering wheel is moved to the last selected
position when:
R the driver's door is closed
R you insert the SmartKey into the ignition lock
or
R you press the Start/Stop button once on vehi-
cles with KEYLESS-GO
When you close the driver's door with the igni-
tion switched on, the steering wheel is also
automatically moved to the previously set posi- tion.
The last position of the steering column is stored
when you:
R switch the ignition off
R save the setting with the memory function
(Y page 113).
Crash-responsive EASY-EXIT feature If the crash-responsive EASY-EXIT feature is trig-
gered in an accident, the steering column will
move upwards when the driver's door is opened.
This occurs irrespective of the position of the
SmartKey in the ignition lock. This makes it eas- ier to exit the vehicle and rescue the occupants.
The crash-responsive EASY-EXIT feature is only
operational if the EASY-EXIT/ENTRY feature is
activated in the on-board computer
(Y page 241). Mirrors
Rear-view mirror
X
Anti-glare mode: flick anti-glare lever 0043for-
wards 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. 110
MirrorsSeats, steering wheel and mirrors

X
Turn the SmartKey to position 0047or0048 in the
ignition lock (Y page 140).
X Exterior mirror on the driver's side: press but-
ton 0043.
Exterior mirror on the front-passenger side:
press button 0044.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected exterior
mirror using button 0087as long as the indicator
lamp is lit.
X Press button 0087up, down, or to the right or
left until you have adjusted the exterior mirror
to the correct position. You should have a
good overview of traffic conditions.
The convex exterior mirrors provide a larger field of vision.
The exterior mirrors are heated automatically if
the rear window defroster is switched on and the
outside temperature is low.
Folding the exterior mirrors in or out
electrically X
Turn the SmartKey to position 0047or0048 in the
ignition lock (Y page 140).
X Briefly press 0043.
Both exterior mirrors fold in or out.
i Make sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
i If you are driving faster than 30 mph
(47 km/h), you can no longer fold in the exte-
rior mirrors.
Resetting the exterior mirrors If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must be
reset. Otherwise, the exterior mirrors will not
fold in when you select the "Fold in mirrors whenlocking" function in the on-board computer
(Y page 242).
X Turn the SmartKey to position 0047in the igni-
tion lock (Y page 140).
X Briefly press 0043.
Folding the exterior mirrors in or out
automatically If the "Fold in mirrors when locking" function is
activated in the on-board computer
(Y
page 242):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the outside.
R the exterior mirrors fold out again automati-
cally as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position, proceed as follows:
X
Vehicles without electrically folding exte-
rior mirrors: move the exterior mirror into
the correct position manually.
X Vehicles with electrically folding exterior
mirrors: press and hold mirror-folding but-
ton 0043until you hear a click and the mirror
engages in position audibly.
The mirror housing is engaged again and you
can adjust the exterior mirrors as usual
(Y page 110). Mirrors
111Seats, steering wheel and mirrors Z

Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom-
mends that you drive with the lights switched on even during the daytime. In some countries,
operation of the headlamps varies due to legal
requirements and self-imposed obligations. Setting the exterior lighting
Setting options Exterior lighting can be set using:
R the light switch
R the combination switch (Y page 116)
R the on-board computer (Y page 240)
Light switch Operation
0047
0063
Left-hand standing lamps
0048 0064
Right-hand standing lamps
0049 0060
Parking lamps, license plate and
instrument cluster lighting
004A 0071
Automatic headlamp mode, controlled
by the light sensor
004B 0058
Low-beam/high-beam headlamps
0084 005E
Rear fog lamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to 0071.
The exterior lighting (except the parking/stand-
ing lamps) switches off automatically if you:
R remove the SmartKey from the ignition lock
R open the driver's door with the SmartKey in
position 0092in the ignition lock Automatic headlamp mode
0071 is the favored light switch position. The
light setting is automatically selected according
to the brightness of the ambient light (excep-
tion: poor visibility due to weather conditions
such as fog, snow or spray):
R SmartKey in position 0047in the ignition lock:
the parking lamps are switched on/off auto-
matically depending on the brightness of the
ambient light.
R With the engine running (USA only): if you
have switched on the Daytime Running
Daytime Running
Lights Lights function in the on-board computer,
the daytime running lamps or the parking
lamps and low-beam headlamps are switched on or off automatically depending on the
brightness of the ambient light.
X To switch on automatic headlamp mode:
turn the light switch to
0071. G
WARNING
When the light switch is set to 0058, 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
0058.
The automatic headlamp mode is only an aid.
The driver is responsible for the vehicle's light-
ing at all times.
Canada only:
The daytime running lamps improve the visibility
of your vehicle during the day. The daytime run-
ning lamps function is required by law in Can-
ada. It cannot therefore be deactivated.
When the engine is running and the vehicle is
stationary: if you move the selector lever from a driving position to P, the daytime running
lamps/low-beam headlamps go out after three
minutes.
When the engine is running, the vehicle is sta-
tionary and in bright ambient light: if you turn the light switch to the 0060position, the daytime
running lamps and parking lamps switch on.
If the engine is running and you turn the light
switch to 0058, the manual settings take prec-
edence over the daytime running lamps.
USA only: Exterior lighting
115Lights and windshield wipers Z

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
(Y page 240).
If the engine is running and you turn the light
switch to 0060or0058, the manual settings
take precedence over the daytime running
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 0058position.
This is a particularly useful function in the event
of rain and fog.
X To switch on the low-beam headlamps:
turn the SmartKey to position
0048in the igni-
tion lock or start the engine.
X Turn the light switch to 0058.
The green 0058indicator lamp in the instru-
ment cluster lights up.
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 to position 0048in the ignition lock or
start the engine.
X Turn the light switch to 0058or0071.
X Press the 005Ebutton.
The yellow 005Eindicator lamp in the instru-
ment cluster lights up.
X To switch off the rear fog lamp: press the
005E button.
The yellow 005Eindicator 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 0060parking
lamps over a period of several hours. If pos-
sible, switch on the right-hand 0064or left-
hand 0063 standing lamps. X
To switch on: turn the light switch to 0060.
The green 0060indicator lamp in the instru-
ment cluster lights up.
Standing lamps Switching on the standing lamps ensures the
corresponding side of the vehicle is illuminated.X To switch on the standing lamps: the
SmartKey should not be in the ignition lock or in key position 0092in the ignition lock.
X Turn the light switch to 0063(left-hand side of
the vehicle) or 0064(right-hand side of the
vehicle).
Vehicles towing a trailer: both the right-hand
and left-hand standing lamps (tail lamps) are
always illuminated on the trailer. Combination switch
0043
High-beam headlamps
0044 Turn signal, right
0087 High-beam flasher
0085 Turn signal, left
X To indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow 0044or0085.
The corresponding turn signal flashes three
times.
X To indicate: press the combination switch
beyond the pressure point in the direction of
arrow 0044or0085.
X To switch on the high-beam headlamps:
turn the light switch to 0058or0058.
X Press the combination switch beyond the
pressure point in the direction of arrow 0043.
In the 0058position, the high-beam head-
lamps are only switched on when it is dark and
the engine is running. 116
Exterior lightingLights and windshield wipers

The blue
0057indicator lamp in the instru-
ment cluster lights up when the high-beam
headlamps are switched on.
X To switch off the high-beam headlamps:
move the combination switch back to its nor- mal position.
The blue 0057indicator lamp in the instru-
ment cluster goes out.
Vehicles with Adaptive Highbeam Assist: if
Adaptive Highbeam Assist is activated, it auto-
matically controls activation and deactivation of
the high-beam headlamps (Y page 118).Hazard warning lamps
X
To switch on the hazard warning lamps:
press button 0043.
All turn signals flash. If you now switch on a
turn signal using the combination switch, only the turn signal lamp on the corresponding
side of the vehicle will flash.
X To switch off the hazard warning lamps:
press button 0043.
The hazard warning lamps automatically switch
on if:
R an air bag is deployed or
R the vehicle decelerates rapidly from a speed
of above 45 mph (70 km/h) and comes to a
standstill
The hazard warning lamps switch off automati-
cally if the vehicle reaches a speed of above
6 mph (10 km/h) again after a full brake appli-
cation.
i The hazard warning lamps still operate if the
ignition is switched off. Intelligent Light System
General notes The Intelligent Light System is a system that
adjusts the headlamps automatically to suit the
prevailing driving and weather conditions. It
offers advanced functions for improved illumi-
nation of the road surface, e.g. depending on the vehicle speed or weather conditions. The sys-
tem includes the active light function, corneringlight function, highway mode and extended
range fog lamps. The system is only active when it is dark.
You can activate or deactivate the "Intelligent
Light System" using the on-board computer
(Y page 240).
Active light function The active light function is a system that moves
the headlamps according to the steering move- ments of the front wheels. In this way, relevant
areas remain illuminated while driving. This
allows you to recognize pedestrians, cyclists
and animals sooner.
Active: when the lights are switched on.
Vehicles with Lane Keeping Assist: the active
light function evaluates the course of the lane in which you are driving and adjusts the light in
advance.
Cornering light function The cornering light function improves the illu-
mination of the road over a wide angle in the
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:
R if you are driving at speeds below 25 mph
(40 km/h) and switch on the turn signal or
turn the steering wheel
R if 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. Exterior lighting
117Lights and windshield wipers Z

Highway mode
Highway mode increases the range of the beam.
Active: if you are driving at a speed above
110 km/h and do not make any large steering
movements for at least 1,000 m or if you are
driving at a speed above 130 km/h.
Not active: if you are driving at speeds below
80 km/h following activation.
Extended range fog lamps The extended range fog lamps reduce the glare
experienced by the driver and improve the illu-
mination of the edge of the road.
Active: if you are driving at speeds below
40 mph (70 km/h) and you switch on the rear
fog lamp.
Not active: if, following activation, you are driv-
ing at speeds above 60 mph (100 km/h) or if you
switch off the rear fog lamp
Off-road lights The off-road lights facilitate the early recogni-
tion of objects/obstacles when driving off-road
thanks to a symmetrical, wider and brighter dis- tribution of light from the low-beam headlamps.
Active: when driving at speeds no faster than
30 mph (50 km/h) and the off-road program
selector wheel is in position 1 or 2.
Not active: when driving at speeds above
30 mph (50 km/h).
When the off-road lights are switched on, the
cornering light function is permanently activa-
ted, the active light function is deactivated and
the headlamp range control is set to static
mode. Adaptive Highbeam Assist
General notes You can use this function to set the headlamps
to change between low beam and high beam
automatically. The system recognizes vehicles
with their lights on, either approaching from the opposite direction or traveling in front of your
vehicle, and consequently switches the head-
lamps from high beam to low beam.
The system automatically adapts the low-beam
headlamp range depending on the distance to
the other vehicle. Once the system no longer detects any other vehicles, it reactivates the
high-beam headlamps.
The system's optical sensor is located behind
the windshield near the overhead control panel.
Important safety notes G
WARNING
Adaptive Highbeam Assist does not recognize road users:
R who have no lights, e.g. pedestrians
R who have poor lighting, e.g. cyclists
R whose lighting is blocked, e.g. by a barrier
On very rare occasions, Adaptive Highbeam
Assist may fail to recognize other road users
that have lights, or may recognize them too
late. In this, or in similar situations, the auto-
matic high-beam headlamps will not be deac-
tivated or will be activated regardless. There is a risk of an accident.
Always carefully observe the traffic conditionsand switch off the high-beam headlamps in
good time.
Adaptive Highbeam Assist cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist is only an aid. You are responsible for adjusting the vehicle's lighting
to the prevailing light, visibility and traffic con-
ditions.
In particular, the detection of obstacles can be
impaired if:
R poor visibility, e.g. due to fog, heavy rain or
snow
R dirt on the sensors or the sensors are
obscured
Switching Adaptive Highbeam Assist
on/off X
To switch on: turn the light switch to 0058.
X Press the combination switch beyond the
pressure point in the direction of arrow 0043.
The 00CE indicator lamp in the multifunction
display lights up when it is dark and the light
sensor activates the low-beam headlamps.
If you are driving at speeds above approx-
imately 16 mph (25 km/h): 118
Exterior lightingLights and windshield wipers

Automatic interior lighting control
X
To switch on: set the switch to center posi-
tion 0084.
X To switch off: set the switch to the 0033
position.
The interior lighting automatically switches on if
you:
R Unlock the vehicle
R Open a door
R Remove the SmartKey from the ignition lock
The interior lighting is switched on for a set time
when the SmartKey is removed from the ignition
lock. This delayed switch-off can be adjusted via the multimedia system (see Digital Operator's
Manual). 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 emer-
gency lighting: press the hazard warning
lamp button.
or X Lock and then unlock the vehicle using the
SmartKey. Replacing bulbs (vehicles with LED
headlamps)
The front and rear light clusters of your vehicle
are equipped with light-emitting diodes. Do not
replace the vehicle's bulbs yourself. Contact a
qualified specialist workshop which has the nec-
essary specialist knowledge and tools to carry
out the work required.
Lamps are an important aspect of vehicle safety. You must therefore make sure that these func-
tion correctly at all times. Have the headlamp
setting checked regularly. Replacing bulbs (vehicles with halo-
gen headlamps)
Important safety notes
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 if it 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
Use bulbs only in closed lamps that have been
designed for this 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 operation.
Do not allow bulbs to come into contact with
liquids.
Replace only the bulbs listed (Y page 120).
Have the bulbs that you cannot replace yourself
replaced 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.
Headlamps and lights 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. Overview of bulb replacement - bulb
types
You can replace the following bulbs. The bulb
type can be found in the legend. 120
Replacing bulbs (vehicles with halogen headla
mps)Lights and windshield wipers

Switching the rear window wipers
on/off
Combination switch
0043
00C5 Rear window wiper switch
0048 008E Wipes with washer fluid
0049 ISwitches on intermittent wiping
004A 0Switches off intermittent wiping
004B 008E Wipes with washer fluid
X Turn the SmartKey to position 0047or0048
(Y page 140).
X Turn switch 0043on the combination switch to
the corresponding position.
When the rear window wiper is switched on,
the 00C5 symbol appears in the assistance
graphic in the instrument cluster. Further
information on the assistance graphic
(Y page 238). Replacing the wiper blades
Important safety notes G
WARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
! To avoid damaging the wiper blades, make
sure that you touch only the wiper arm of the
wiper.
! Never open the hood/tailgate if a wiper arm
has been folded away from the windshield/
rear window. Never fold a windshield wiper arm without a
wiper blade back onto the windshield/rear
window.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release the
wiper arm without a wiper blade and it falls
onto the windshield/rear window, the wind-
shield/rear window may be damaged by the
force of the impact.
Mercedes-Benz recommends that you have
the wiper blades changed at a qualified spe-
cialist workshop.
Changing the windshield wiper blades Removing the wiper blades
X Remove the SmartKey from the ignition lock.
X Fold the wiper arm away from the windshield. X
Firmly press release knob 0043and pull wiper
blade 0044upwards from the wiper arm in the
direction of the arrow.
Installing the wiper blades Windshield wipers
123Lights and windshield wipers Z