2016 MERCEDES-BENZ GLS SUV roof

When closing the roller sunblind, make sure
that no body parts are in the sweep.
If someone is trapped:
R release the switch immediately or
R press the switch in any direction during the
automatic closing process
The closing process is stopped.
Opening and closing roller sunblinds :
To open
; To open
= To close
X Turn the key to position 1or 2in the ignition
lock.
X Press or pull the 2switch in the corre-
sponding direction.
If you press/pull the 2switch beyond the
point of resistance, automatic operation is star- ted in the corresponding direction. You can stop
automatic operation by pressing/pulling again.
Resetting the panorama sliding sunroof
and the roller sunblinds !
If the panorama sliding sunroof and the
roller sunblinds cannot be fully opened or
closed after resetting, contact a qualified spe- cialist workshop.
Reset the panorama sliding sunroof and the
roller sunblinds if the panorama sliding sunroof
or the roller sunblinds do not move smoothly.
X Turn the key to position 1or 2in the ignition
lock.
X Pull the 2switch repeatedly to the point of
resistance in the direction of arrow =until
the panorama sliding sunroof is fully closed.
X Keep the 2switch pulled for an additional
second.
X Pull the 2switch repeatedly to the point of
resistance in the direction of arrow =until
the roller sunblinds are fully closed.
X Keep the 2switch pulled for an additional
second.
X Make sure that the panorama sliding sunroof
and the roller sunblinds can be fully opened
again.
X If this is not the case, repeat the steps above
again. Problems with the sliding sunroof
Your vehicle may be fitted with a sliding sunroof or a panorama sliding sunroof. In the following
section, the term "sliding sunroof" refers to both types of sliding sunroof. G
WARNING
If you close the sliding sunroof again immediately after it has been blocked or reset, the sliding
sunroof 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.
If someone is trapped:
R release the switch immediately or
R press the switch in any direction during the automatic closing process
The closing process is stopped. 100
Sliding sunroofOpening and closing

Problem
Possible causes/consequences and
M
MSolutions The sliding sunroof can-
not be closed and you
cannot see the cause. If the sliding sunroof is obstructed during closing and reopens again
slightly:
X Immediately after the sliding sunroof blocks, pull the 2switch in
the overhead control panel down to the point of resistance and hold it until the sliding sunroof is closed.
The sliding sunroof is closed with increased force.
If the sliding sunroof is obstructed again during closing and reopens
again slightly:
X Immediately after the sliding sunroof blocks, pull the 2switch in
the overhead control panel down to the point of resistance and hold it until the sliding sunroof is closed.
The sliding sunroof is closed without the automatic reversing fea-
ture. Sliding sunroof
101Opening and closing Z

Activating and deactivating seat venti-
lation The three blue indicator lamps in the buttons
indicate the ventilation level you have selected. X
Turn the key to position 1or 2in the ignition
lock (Y page 148).
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the vehicle battery voltage is too low, the
seat ventilation may switch off.
i You can open the side windows and the slid-
ing sunroof using the "Convenience opening" feature (Y page 95). The seat ventilation of
the driver's seat automatically switches to the
highest level.
Problems with the seat heating or seat ventilation Problem
Possible causes/consequences and
M
MSolutions The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation will switch back on automatically. Steering wheel
Important safety notes
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, 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 mirrors and fasten your seat
belt before starting the engine. G
WARNING
Children could become trapped by the steer-
ing wheel if they adjust it. There is a risk of
injury. When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock. Adjusting the steering wheel man-
ually
G
WARNING
The steering wheel may move unexpectedly if you adjust it while driving. This could cause
you to lose control of the vehicle. There is a
risk of an accident.
Make sure that the steering wheel is locked
before driving off. Never unlock the steering
wheel when the vehicle is in motion. Steering wheel
113Seats, steering wheel and mirrors Z

Outside air is added after about 30 minutes.
X To deactivate: press thedbutton.
The indicator lamp in the dbutton goes
out.
i Air-recirculation mode is deactivated auto-
matically:
R after approximately five minutes at outside
temperatures below approximately 5 †
R after approximately five minutes if cooling
with air dehumidification is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 5 † if
the "Cooling with air dehumidification"
function is activated Convenience opening/closing using
the air-recirculation button
G
WARNING
When the convenience closing feature is oper- ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. When closing make sure that no parts of the body are in the closing area. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
When opening, make sure that nobody is
touching the side window. If someone
becomes trapped, immediately press
the W switch in the door to stop the move-
ment of the side windows. To continue closing
the side window, pull on the Wswitch.
X Convenience closing feature: press and
hold the dbutton until the side windows
close.
Vehicles with sliding sunroof or pano-
rama sliding sunroof: the sliding sunroof or
panorama sliding sunroof closes simultane-
ously. The indicator lamp in the
dbutton lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area during
convenience closing, proceed as follows:
X Press the Wbutton to stop the side win-
dows.
The side windows stop.
X To then open the side windows, press the
W button again.
X Only vehicles with sliding sunroof or pan-
orama sliding sunroof: press the2
switch to stop the sliding sunroof or pano-
rama sliding sunroof.
The sliding sunroof or panorama sliding sun-
roof stops.
X To then open the sliding sunroof or panorama
sliding sunroof, pull back on the 2button.
i If the sliding sunroof is raised and closes,
press the 2switch, to stop the sliding
sunroof. Do not pull back on the 2switch
afterwards. The sliding sunroof closes before
it opens.
i Notes on the automatic reversing function
for:
R the side windows (Y page 93)
R the panorama sliding sunroof (Y page 97)
R the sliding sunroof (Y page 97)
X Convenience opening feature: press and
hold the dbutton until the side windows
open.
Vehicles with sliding sunroof or pano-
rama sliding sunroof: the sliding sunroof or
panorama sliding sunroof opens simultane-
ously.
The indicator lamp in the dbutton goes
out. Air-recirculation mode is deactivated.
i If you open the side windows or the sliding
sunroof or the panorama sliding sunroof man-
ually after closing them with the convenience closing feature, they will remain in this posi-
tion when opened using the convenience
opening feature. Operating the climate control system
139Climate control Z

X
To open or close: turn thumbwheel;to the
left or right. Rear-compartment side air vent in the roof lining
: Rear-compartment side air vent
; Thumbwheel for rear-compartment side air
vent
X To open or close: turn thumbwheel;up or
down.
Third row of seats Rear-compartment side air vent in the roof lining
: Rear-compartment side air vent
; Thumbwheel for rear-compartment side air
vent
X To open or close: turn thumbwheel;up or
down. 146
Adjusting the air ventsClimate control

Driving tips
General notes
Important safety notes 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.
Drive sensibly – save fuel Observe the following tips to save fuel:
X The tyres should always be inflated to the rec-
ommended tyre pressure.
X Remove unnecessary loads.
X Remove roof carriers when they are not nee-
ded.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work carried out as
indicated by the service intervals in the Ser-
vice Booklet or by the service interval display.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic, on short jour- neys and in hilly terrain. ECO display
The ECO display shows you how economical
your driving style is. The ECO display assists you in achieving the most economical driving style
for the selected settings and prevailing condi-
tions. Consumption can be significantly influ-
enced by your driving style. :
Acceleration
; Coasting
= Constant
? Additional range achieved
Range ?is shown under Bonus Bonusfr.
fr.start
start and
represents the additional range achieved since
the beginning of the journey as a result of an
adapted driving style.
If the fuel level has dropped into the reserve
range, the Reserve fuel Reserve fuel message is shown in
the multifunction display instead of range ?. In
addition, the 8warning lamp in the instru-
ment cluster lights up (Y page 298).172
Driving tipsDriving and pa
rking

such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a window on the side of the vehicle that is not
facing into the wind.
! Take care not to damage the sealing strip
and the moulding on the side of the rear win- dow when scraping ice off the rear window.
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden acceleration,
steering and braking manoeuvres. Do not use
cruise control or Distance Pilot DISTRONIC.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
X Try to bring the vehicle under control by using
corrective steering.
When driving in snow with or without snow
chains, select driving program Slippery
(Y page 155).
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in wooded areas or on bridges. You should pay
special attention to road conditions when tem-
peratures are around freezing point.
Further information on driving with snow chains
(Y page 364).
Further information on driving with summer
tyres (Y page 363).
Observe the notes in the "Changing a wheel"
section (Y page 369). Off-road driving
Important safety notes G
WARNING
If you drive on a steep incline at an angle or
turn on a steep incline, the vehicle could slip
sideways, tip and overturn. There is a risk of
an accident.
When driving on an incline, drive into the line of fall (upwards or downwards in a straight
line) and do not turn. G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system. There is a risk of fire.
When driving off road or on unpaved roads,
check the vehicle's underside regularly. In
particular, remove parts of plants or other
flammable materials which have become
trapped. In the case of damage, contact a
qualified specialist workshop. G
WARNING
If the vehicle level is high, the vehicle centre of gravity is raised. This could cause the vehicleto tip over more easily on uphill or downhill
gradients. There is a risk of an accident.
Select the lowest possible vehicle level.
! There is a risk of damage to the vehicle if:
R the vehicle becomes stuck, e.g. on a high
kerb or an unpaved road
R you drive too fast over an obstacle, e.g. a
kerb, a speed bump or a pothole in the road
R a heavy object strikes the underbody or
parts of the chassis
In situations like this, the body, the under-
body, chassis parts, wheels or tyres could be damaged without the damage being visible.
Components damaged in this way can unex-
pectedly fail or, in the case of an accident, no
longer withstand the strain they are designed
to.
If the underbody panelling is damaged, com-
bustible materials such as leaves, grass or 176
Driving tipsDriving and parking

twigs can gather between the underbody and
the underbody panelling. If these materials
come in contact with hot parts of the exhaust
system, they can catch fire.
In such situations, have the vehicle checked
and repaired immediately at a qualified spe-
cialist workshop. If on continuing your jour-
ney you notice that driving safety is impaired, pull over and stop the vehicle immediately,
paying attention to road and traffic condi-
tions. In such cases, consult a qualified spe-
cialist workshop.
When driving off-road, substances such as sand,
mud and water or water mixed with oil may get
into the brakes. This may lead to a reduction in
braking performance or total brake failure as a
result of increased wear. The braking charac-
teristics will vary depending on the substances
that get into the brakes. Clean the brakes after
driving off-road. If you notice grinding noises or a reduction in braking performance, have the
brake system checked at a qualified specialist
workshop immediately. Adapt your driving style
to the altered braking characteristics.
Driving off-road increases the possibility of dam- age to the vehicle, which may cause assemblies
or systems to fail. Adapt your driving style to the conditions of the terrain. Drive carefully. Have
vehicle damage rectified immediately at a quali-
fied specialist workshop.
Do not shift into transmission position Nwhen
driving off-road. You could lose control of the
vehicle if you attempt to brake the vehicle using
the service brake. If the gradient is too steep for your vehicle, back up in reverse gear.
General notes H
Environmental note
Protection of the environment is of primary
importance. Treat nature with respect.
Observe all prohibiting signs.
Read this section before driving your vehicle off- road. Practise by driving over more gentle off-
road terrain first. The following driving systems are specially
adapted to off-road driving:
R the Offroad drive program (vehicles without
Off-Road Engineering package)
(Y page 228)
R Offroad andOffroad Plus drive programs
(vehicles with Off-Road Engineering package) (Y page 229)
R LOW RANGE offroad gear (vehicles with the
Off-Road Engineering package)
(Y page 230)
R Differential lock (vehicles with the Off-Road
Engineering package) (Y page 230)
R Off-road ABS (Y page 69)
R Off-road 4ETS (Y page 72)
R Off-road ESP ®
(Y page 74)
R AIRMATIC package (vehicle level)
(Y page 196)
R DSR (Downhill Speed Regulation)
(Y page 227)
Observe the following notes:
R Stop the vehicle before driving off-road. If
necessary, select the offroad program
(Y page 229) or shift to the LOW RANGE off-
road gear (Y page 230).
R Select a vehicle level suitable for the off-road
terrain. To avoid damaging the vehicle, ensure
sufficient ground clearance at all times.
R Make sure that items of luggage and loads are
stowed safely and are well secured
(Y page 316).
R Always keep the engine running and in gear
when driving on a downhill gradient. Activate
DSR (Y page 227).
R Drive slowly and evenly, if necessary at walk-
ing pace.
R Ensure that the wheels are in contact with the
ground at all times.
R Drive with extreme care on unknown off-road
routes where visibility is poor. For safety rea-
sons, get out of the vehicle first and survey
the off-road route.
R Look out for obstacles such as rocks, holes,
tree stumps and furrows.
R Take care when turning on an uphill or down-
hill slope or when driving across a slope. The
vehicle could otherwise tip over.
R Always keep the doors, the tailgate and the
sliding sunroof closed while the vehicle is in
motion. Driving
tips
177Driving an d parking Z