ECU MERCEDES-BENZ GLS SUV 2016 Owner's Manual

X
To power close a door: push the door into
the lock up to the first detent position.
Power closing will pull the door fully closed.
X To power close the tailgate: lightly press
the tailgate downwards.
Power closing will pull the tailgate fully
closed. Unlocking/locking the driver's door
using the emergency key element
i In order to lock all of the vehicle's locks,
begin by pressing the button for locking the
vehicle from the inside while the driver's door
is open. Then proceed to lock the driver's
door using the emergency key element. X
Insert the emergency key element into the
lock of the driver's door as far as it will go.
X To unlock: turn the emergency key element
anti-clockwise to position 1.
X To lock: turn the emergency key element
clockwise as far as it will go to position 1.
Right-hand-drive vehicles: turn the emer-
gency key element in the opposite direction
respectively.
If you use the emergency key element to unlock
and open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
(Y page 78).
If you lock the vehicle as described above, the
fuel filler flap is not locked. The anti-theft alarm
system is not primed. Luggage compartment
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open. G
WARNING
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, especially when braking or abruptly changing directions.
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 the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 387).
Stow luggage or loads preferably in the luggage
compartment. Observe the loading guidelines
(Y page 312).
Do not leave the key in the luggage compart-
ment. If you do so, you could lock yourself out.
You can:
R close the tailgate manually from outside
R open and close the tailgate automatically
from outside
R open and close the tailgate automatically
from inside
R limit the opening angle of the tailgate
R unlock the tailgate from inside with the emer-
gency release Luggage compartment
89Opening and closing Z

be opened from the inside after the vehicle has
been locked from the outside. You can only open the rear doors from inside the vehicle if they are
not secured by the child-proof locks
(Y page 67). The anti-theft alarm system is trig-
gered if the door is opened from the inside.
Switch off the alarm (Y page 78).
The anti-theft alarm system is triggered if the
door is opened from the inside. Switch off the
alarm (Y page 78).
All countries: G
WARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of the closing area during the closing process.
Use one of the following options to stop the
closing process:
R press the Fbutton on the key
R pull or press the remote operating switch
on the driver's door
R press the closing or locking button on the
tailgate
R pull the handle on the tailgate G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open.
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
Two warning tones sound while the tailgate is
opening or closing. The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y
page 387).
i Notes on the automatic reversing feature for
the tailgate (Y page 90).
Opening the tailgate automatically You can open the tailgate automatically using
the key or the handle in the tailgate.
X Press and hold the Fbutton on the key
until the tailgate opens.
or X When the tailgate is unlocked, pull the tailgate
handle and let it go again immediately.
or X With the tailgate stopped in an intermediate
position, pull the tailgate upwards.
You can release the tailgate as soon as the
tailgate starts to open.
Closing the tailgate automatically X
To close: press closing button :in the tail-
gate.
or X Press and hold the Fbutton on the key
until the tailgate closes.
You can release the button as soon as the
tailgate starts to close.
or X Pull the tailgate downwards slightly.
You can release the tailgate as soon as the
tailgate starts to close.
Vehicles with KEYLESS-GO: you can close and
lock the tailgate simultaneously. X Press locking button ;in the tailgate.
If a KEYLESS-GO key is detected outside the
vehicle, the tailgate closes and locks. All Luggage compartment
91Opening and closing Z

G
WARNING
The seat does not engage in the entry/exit
position. The seat may fold back suddenly,
e.g. when accelerating, braking, in the event
of a sudden change of direction or an acci-
dent. Persons in the sweep of the seat could
be trapped. There is a risk of injury.
Always fold back a seat that has been folded
forward before pulling away. Make sure that
the seat and the seat backrest are engaged.
General notes Getting into or out of the third row of seats: youcan fold forward the right outer seat in the sec-
ond row of seats.
If the right outer rear seat in the second row of
seats is in the entry/exit position: the display
message: 2nd
2nd seat seat row,
row,right
right Not
Notlocked
locked
appears in the multifunction display, for exam-
ple.
When you fold the seat back until it engages, the display message disappears.
To ensure that the seat backrest is fully
engaged, pull firmly on the seat backrest.
i Further related subjects:
R Luggage compartment enlargement (fold-
ing down the second row of seats)
(Y page 315)
R Folding the seats in the third row of seats
down/up (Y page 107)
Entry position X
Move the head restraint to the lowest position
(Y page 105).
X Pull release handle ;in the direction of the
arrow to the pressure point and hold it in this position.
The backrest folds forwards. You have two options for folding the seat down
fully.
X Pull release handle ;again in the direction of
the arrow to the pressure point and hold it in
this position.
or X Pull on release loop :in the direction of the
arrow and hold in this position.
X Lift up the seat until it folds forwards.
i Vehicles with memory function: the front
seats move forwards slightly. Entry position
Exit position G
WARNING
When adjusting a seat, you or another vehicle occupant could become trapped by the guiderail of the seat, for instance. There is a risk of
injury.
Make sure that no one has any part of their
body within the sweep of the seat when
adjusting it.
i Further related subjects:
R Important safety notes on airbags
(Y page 47)
R Securing children in the vehicle
(Y page 57) Seats
109Seats, steering wheel and mirrors Z

Halogen headlamps
:
Dipped-beam headlamp: H7 55 W
; Main-beam headlamp: H7 55 W
= Turn signal: W 5 W BV Fitting/removing the cover on the
front wheel arch You must remove the cover from the front wheel
housing before you can change the front bulbs.
X To remove: switch off the lights.
X Turn the front wheel inwards.
X Remove securing pin ;using a suitable tool.
X Slide cover :up and remove it.
X To fit: insert cover :again and slide it down
until it engages.
X Insert securing pin ;. Dipped-beam headlamps
X
Remove the cover in the front wheel arch
(Y page 127).
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anti-clockwise and pull
out.
X Pull the bulb out of bulb holder ;.
X Insert new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise.
X Press on housing cover :and turn it to the
right.
X Replace the cover in the front wheel arch
(Y page 127). Main-beam headlamps
X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
remove it.
X Pull lever =upwards and remove bulb
holder ;.
X Remove the bulb from bulb holder ;.
X Insert the new bulb into bulb holder ;. Replacing bulbs (vehicles with halogen headlamps)
127Lights and windscreen wipers Z

Running-in notes
Important safety notes
In certain driving and driving safety systems, the sensors adjust automatically while a certain dis-
tance is being driven after the vehicle has been delivered or after repairs. Full system effective-
ness is not reached until the end of this teach-in process.
Brake pads/linings and discs that are either new or have been replaced only achieve optimum
braking effect after several hundred kilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. The first 1,500 km
If you treat the engine with sufficient care from
the very start, you will be rewarded with excel-
lent performance for the remainder of the
engine's life.
R Drive at varying vehicle speeds and engine
speeds for the first 1500 km.
R Avoid overstraining the vehicle during this
period, e.g. driving at full throttle.
R Change gear in good time, before the rev
counter needle is Ôof the way to the red area
of the rev counter.
R Do not shift down a gear manually in order to
brake.
R Try to avoid depressing the accelerator pedal
beyond the point of resistance (kickdown).
Additional notes on running in Mercedes-AMG
vehicles:
R Do not drive at speeds above 140 km/h for
the first 1500 km.
R Only allow the engine to reach a maximum
engine speed of 4500 rpm briefly.
R Ideally, for the first 1,500 km, drive in the
Comfort drive program.
After 1,500 km, you may gradually accelerate
the vehicle to full road and engine speeds.
You should also observe these notes on running- in if the engine or parts of the drive train on your
vehicle have been replaced.
Always observe the maximum permissible
speed. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor-mats on top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off. Driving
147Driving and parking Z

Pulling away with a trailer
To ensure that you do not roll backwards when
pulling away on an uphill slope, apply the electric parking brake.
X Press and hold handle :.
The electric parking brake continues to brake
and prevent the vehicle from rolling back-
wards.
The red !indicator lamp in the instrument
cluster remains lit.
X Depress the accelerator pedal.
X As soon as the vehicle/trailer combination is
held by the driving force of the engine, release
lever :.
the electric parking brake is released
The red !indicator lamp in the instrument
cluster goes out.
Hill start assist Hill start assist helps you when pulling away for-
wards or in reverse on an uphill gradient. It holds the vehicle for a short time after you have
removed your foot from the brake pedal. This
gives you enough time to move your foot from
the brake pedal to the accelerator pedal and
depress it before the vehicle begins to roll. G
WARNING
After a while, hill start assist no longer holds
the vehicle and it may roll away. There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist. Hill start assist is not active if:
R you are pulling away on a level road or a
downhill gradient
R the transmission is in position N
R the electric parking brake is applied
R ESP ®
is malfunctioning ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
When pulling away again, the engine starts auto-
matically. The ECO start/stop function thereby
helps you to reduce the fuel consumption and
emissions of your vehicle.
Important safety notes G
WARNING
If the engine is switched off automatically and you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving. There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes :
ECO start/stop display
The ECO start/stop function is activated when-
ever you start the engine using the key or the
Start/Stop button.
If the è ECO symbol is shown on the multi-
function display, the ECO start/stop function
switches the engine off automatically if the vehi- cle stops moving.
If the ECO start/stop function has been man-
ually deactivated (Y page 153) or a malfunction Driving
151Driving and parking Z

has caused the system to be deactivated, the
è orç ECO symbol is not displayed.
Mercedes-AMG vehicles: the ECO start/stop
function is only available in drive programs
Comfort andSlippery.
Automatic engine switch-off If the vehicle is braked to a standstill with the
transmission in Dor N, the ECO start/stop func-
tion switches off the engine automatically.
The ECO start/stop function is operational and
the è ECO symbol is displayed on the mul-
tifunction display, if:
R the indicator lamp in the ECO button is lit
green
R the Sport Plus orSport drive program is not
selected (Mercedes-AMG vehicles)
R none of the off-road programs are selected
R the outside temperature is within the range
that is suitable for the system
R the engine is at normal operating temperature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged
R the system does not detect moisture on the
windscreen when the air-conditioning system
is switched on
R the bonnet is closed
R the driver's door is closed and the driver's
seat belt is fastened
If all conditions for automatic engine switch-off
are not fulfilled, the çECO symbol is shown.
All the vehicle's systems remain active when the
engine is switched off automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It is then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
All vehicles (except Mercedes-AMG vehi-
cles): automatic engine switch-off can take
place a maximum of four times in a row (initial
switch-off, then three subsequent switch-offs).
The ç ECO symbol is shown in the multi-
function display after the engine has been star-
ted automatically for the fourth time. When the
è ECO symbol is shown in the multifunction display, automatic engine switch-off is possible
again.
Mercedes-AMG vehicles: the number of con-
secutive automatic engine stops is unlimited.
Automatic engine start The engine is started automatically if:
R you deactivate the ECO start/stop function
by pressing the ECO button
R in transmission position Dor N, the brake
pedal is released and the HOLD function is not active
R you depress the accelerator pedal
R you engage reverse gear R
R you move the transmission out of position P
R you switch to the Sport PlusorSport drive
program (Mercedes-AMG vehicles)
R you activate manual gearshifting (Mercedes-
AMG vehicles)
R you switch to the Offroaddrive program
(vehicles without Off-Road Engineering pack- age)
R you switch to the OffroadorOffroad Plus
drive program (vehicles with Off-Road Engi-
neering package)
R you unfasten your seat belt or open the driv-
er's door
R the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
screen when the air-conditioning system is
switched on
R the battery's charge status is too low
Shifting the transmission to position Pdoes not
start the engine.
If you shift the transmission from Rto D, the
ECO start/stop function is available again as
soon as the èsymbol reappears on the mul-
tifunction display. 152
DrivingDriving and parking

!
Surfaces which have come into contact with
AdBlue ®
while refilling should be rinsed
immediately with water, or remove AdBlue ®
with a moist cloth and cold water. If AdBlue ®
has already crystallised, use a sponge and
cold water to clean the area. AdBlue ®
residue
crystallises after a certain amount of time and soils the affected surfaces.
! AdBlue ®
is not a fuel additive and must not
be added to the fuel tank. If AdBlue ®
is added
to the fuel tank, this can lead to engine dam-
age.
Have the AdBlue ®
tank refilled at a qualified
specialist workshop. However, you can also top
up the AdBlue ®
tank:
R at a filling station with an AdBlue ®
filling pump
R with AdBlue ®
refill bottles
R with an AdBlue ®
refill canister
When the pump nozzle switches off automati-
cally during filling at a filling pump, the AdBlue ®
tank has been completely filled. Do not fill the
AdBlue ®
tank any further. AdBlue ®
may leak
out.
To avoid transporting already opened refill con-
tainers in the vehicle, completely empty refill
bottles or canisters when filling the AdBlue ®
tank, if possible.
Further information on AdBlue ®
(Y page 384).
Opening/closing the AdBlue ®
filler cap The fuel filler flap is unlocked or locked auto-
matically when you open or close the vehicle
with the key or using KEYLESS-GO.
X To open:switch the ignition off.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings open. X
Turn blue AdBlue ®
fuel filler cap ;anti-clock-
wise and remove it.
AdBlue ®
filler cap ;is secured with a plastic
strip.
X To close: fit AdBlue®
filler cap ;on the filler
neck and turn it clockwise.
X To close the fuel filler flap, press it in the
direction of arrow :.
X Drive faster than 15 km/h.
The Refill AdBlue See Owner's Manual Refill AdBlue See Owner's Manual
message goes out after approximately one
minute.
i If the
Refill AdBlue See Owner's Man‐ Refill AdBlue See Owner's Man‐
ual
ual message continues to be shown in the
multifunction display, you must top up with
more AdBlue ®
.
AdBlue ®
refill canisters !
Do not tighten the disposable hose too
firmly. The disposable hose could otherwise
be damaged and AdBlue ®
may leak out. X
Unscrew the cap from the opening on top of
AdBlue ®
refill canister ;.
X Place disposable hose :on the opening of
AdBlue ®
refill canister ;and screw it on
clockwise until hand-tight.
Disposable hose :remains closed until you
fasten disposable hose :to the AdBlue ®
filler neck of the vehicle. Refuelling
167Driving and parking Z

X
Place disposable hose :on the filler neck on
the vehicle and screw it on clockwise until
hand-tight. When you feel resistance, dispos- able hose :is sufficiently secured.
X Lift up and tip AdBlue ®
refill canister ;.
Filling stops when the AdBlue ®
tank is com-
pletely filled. Do not fill the AdBlue ®
tank any
further. AdBlue ®
refill canister ;can be
removed when it has been only partially emp-
tied.
X Turn disposable hose :on the filler neck of
the vehicle anti-clockwise and remove it.
X Turn disposable hose :on the opening of
AdBlue ®
refill canister ;anti-clockwise and
remove it.
X Reseal AdBlue ®
refill canister ;with the cap.
AdBlue ®
refill canisters are available at many
filling stations or at a qualified specialist work-
shop. AdBlue ®
refill canisters are often sold with
a filler hose. A filler hose that does not exactly fit
the vehicle's AdBlue ®
tank offers no overfill pro-
tection. AdBlue ®
may leak out as a result of
overfilling. Mercedes-Benz offers a special dis-
posable hose with overfill protection. You can
obtain this from any Mercedes-Benz Service
Centre. AdBlue ®
is available in a variety of con-
tainers and receptacles. Use the disposable
hose only with the Mercedes-Benz AdBlue ®
refill
canisters.
AdBlue ®
refill bottle !
Only screw on the AdBlue ®
refill bottle so
that it is hand-tight. Otherwise, the thread of
the AdBlue ®
refill bottle could be damaged
and AdBlue ®
could leak out. X
Unscrew the protective cap from AdBlue ®
refill bottle :.
X Place AdBlue ®
refill bottle :on the filler
neck as shown and screw it on clockwise until hand-tight.
X Press AdBlue ®
refill bottle :towards the
filler neck.
The AdBlue ®
tank is filled. This could take up
to one minute.
i When AdBlue ®
refill bottle :is no longer
pressed, filling stops and the bottle may be
taken off again after being only partially emp- tied.
X Release AdBlue ®
refill bottle :.
X Turn AdBlue ®
refill bottle :anti-clockwise
and remove it.
X Screw the protective cap onto AdBlue ®
refill
bottle :again.
AdBlue ®
refill bottles are available at many fill-
ing stations or at a qualified specialist work-
shop. Refill bottles without a threaded seal offer
no overfill protection. AdBlue ®
may leak out as a
result of overfilling. Mercedes-Benz offers spe-
cial refill bottles with a threaded cap. These are
available at any Mercedes-Benz Service Centre. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rial can come into contact with hot vehicle 168
ParkingDriving and parking

components. In particular, do not park on dry
grassland or harvested grain fields. G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
position P
R start the engine
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is safeguarded
against rolling away unintentionally:
R the electric parking brake must be applied.
R the transmission must be in position Pand the
key must be removed from the ignition lock
R the front wheels must be turned towards the
kerb on steep uphill or downhill gradients
R the empty vehicle must be secured at the
front axle with a wheel chock or similar
object, for example, on uphill or downhill gra- dients
R a laden vehicle must also be secured at the
rear axle with a wheel chock or similar object,
for example, on uphill or downhill gradients Switching off the engine
G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi- cle from rolling away by applying the parking
brake.
X Apply the electric parking brake.
X Shift the transmission to position P.
X With the key: turn the key to position 0in the
ignition lock and remove it.
The immobiliser is activated.
X With KEYLESS-GO:
Press the Start/Stop button (Y
page 148).
The engine stops and all the indicator lamps
on the instrument cluster go out.
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically.
If you then open the driver's or front-passenger door, the automatic transmission shifts to P.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing
system:
X Vehicles with a key: switch on the ignition.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock.
X Insert the key into the ignition lock.
X Switch the ignition on.
X All vehicles: depress the brake pedal and
keep it depressed.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the key in the
ignition lock.
i You can switch off the engine while the vehi-
cle is in motion by pressing and holding the
Start/Stop button for about three seconds.
This function operates independently of the
ECO start/stop automatic engine switch-off
function. Parking
169Driving and parking Z