2016 MERCEDES-BENZ GLS SUV tow

Route guidance active
No change of direction announced
:
Distance to the destination
; Distance to the next change of direction
= Current road
? Symbol indicating "follow the road's course"
Change of direction announced without a lane recommendation :
Road to which the change of direction leads
; Distance to change of direction and visual
distance display
= Change-of-direction symbol
When a change of direction is to be made, you
will see symbol =for the change of direction
and distance graphic ;. This shortens towards
the top of the display as you approach the point of the announced change of direction. The
change of direction starts once the distance dis-
play reaches zero.
Change of direction announced with a
lane recommendation :
Road to which the change of direction leads
; Distance to change of direction and visual
distance display
= Lanes not recommended ?
Recommended lane and new lane during a
change of direction
A Change-of-direction symbol
On multi-lane roads, new lane recommenda-
tions can be displayed for the next change of
direction if the digital map supports this data.
During the change of direction, new lanes may
be added.
Lane not recommended =: you will not be able
to complete the next change of direction if you
stay in this lane.
Recommended lane and new lane during a
change of direction ?: in this lane you will be
able to complete the next two changes of direc-
tion without changing lane.
Other status indicators of the naviga-
tion system The navigation system displays additional infor-
mation and the vehicle status.
Possible displays
R New route... New route... orCalculating route...
Calculating route...
A new route is calculated.
R Road not mapped Road not mapped
The vehicle position is inside the area of the
digital map but the road is not recognised, e.g. new roads, car parks or private land.
R No route No route
No route could be calculated to the selected
destination.
R O
You have reached the destination or an inter-
mediate destination. 246
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions The yellow
!warning lamp and the red !indicator lamp are lit.
The electric parking brake is malfunctioning.
To release:
X Turn the ignition off and then back on.
X Release the electric parking brake manually.
or
X Release the electric parking brake automatically (Y page 170).
If the electric parking brake still cannot be released:
X Do not drive on.
X Consult a qualified specialist workshop. The red
!indicator lamp flashes and the yellow !warning lamp
is lit.
The electric parking brake is malfunctioning.
To release:
X Turn the ignition off and then back on.
X Release the electric parking brake manually.
To apply: X Turn the ignition off and then back on.
X Apply the electric parking brake manually.
If the red !indicator lamp continues to flash:
X Do not drive on.
X Secure the vehicle against rolling away (Y page 370).
X Shift the transmission to position P.
X Turn the front wheels towards the kerb.
X Consult a qualified specialist workshop. The yellow
!warning lamp lights up. The red !indicator lamp
flashes for about ten seconds after the electric parking brake has been applied or released. It then goes out or remains lit.
The electric parking brake is malfunctioning.
X Turn the ignition off and then back on.
X Apply the electric parking brake.
If you cannot apply the electric parking brake:
X Shift the transmission to position P.
X Consult a qualified specialist workshop.
If it is not possible to release the electric parking brake:
X Release the electric parking brake automatically (Y page 170).
If the electric parking brake still cannot be released:
X Consult a qualified specialist workshop. 262
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions X
Consult a qualified specialist workshop immediately.
Further information on the automatic front-passenger front airbag
deactivation feature (Y page 50).Lights
i Vehicles with LED light bulbs in the light clusters:
The display message for the corresponding lamp only appears when all the LEDs in the lamp have
failed. Display messages
Possible causes/consequences and
M
MSolutions b
Left dipped Left dipped
beam beam(Example) The bulb in question is faulty.
X Consult a qualified specialist workshop.
or X Check whether you are permitted to replace the bulb yourself
(Y page 126). b
Intell. Light Sys‐ Intell. Light Sys‐
tem inoperative tem inoperative The Intelligent Light System is faulty. The lights remain available with-
out the Intelligent Light System.
X Consult a qualified specialist workshop. b
Malfunction Malfunction
See
SeeOwn‐
Own‐
er's Manual
er's Manual The exterior lighting is faulty.
X Consult a qualified specialist workshop. Vehicles with trailer tow hitch: a fuse may have blown.
X Stop the vehicle, paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 168).
X Check the fuses (Y page 359).
X If necessary, replace the blown fuse. Observe the warning notes as
you do so.
If the multifunction display still shows the display message: X Consult a qualified specialist workshop. b
Malfunction Malfunction
See
SeeOwn‐
Own‐
er's Manual
er's Manual The exterior lighting is faulty.
X Consult a qualified specialist workshop. b
AUTO lights inoper‐ AUTO lights inoper‐
ative ative The light sensor is faulty.
X
Consult a qualified specialist workshop. b
Switch off lights Switch off lights You are leaving the vehicle and the lights are switched on. A warning
tone also sounds.
X Turn the light switch to the Ãposition. 270
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Ø
Eng. start not pos‐ Eng. start not pos‐
sible in ..km sible in ..km The AdBlue
®
system is malfunctioning. A warning tone also sounds.
X Consult a qualified specialist workshop immediately. Ø
Eng. start not pos‐ Eng. start not pos‐
sible sible The AdBlue
®
system is malfunctioning. A warning tone also sounds.
You can no longer start the engine.
X Consult a qualified specialist workshop immediately. Driving systems
Display messages
Possible causes/consequences and
M
MSolutions À
Attention Assist: Attention Assist:
Take a break! Take a break! Based on certain criteria, ATTENTION ASSIST has detected fatigue or
increasing lapses in concentration on the part of the driver. A warning tone also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so that you get enough rest. À
Attention Assist Attention Assist
inoperative inoperative ATTENTION ASSIST is inoperative.
X Consult a qualified specialist workshop. Á
Please reduce speed Please reduce speed You cannot change the vehicle level.
Possible causes:
R You are driving too fast for the selected vehicle level.
R You are driving too fast with a trailer or the trailer tow hitch socket
is being used, e.g. for a rear-mounted cycle rack.
X Drive more slowly and then select the desired vehicle level again:
R Vehicles with the Off-Road Engineering package (Y page 192)
R Vehicles with the AIRMATIC package (Y page 198)
X Observe the notes on towing a trailer (Y page 234).Á
Compressor is cool‐ Compressor is cool‐
ing ing You have selected a higher vehicle level. The compressor first needs
to cool down because of frequent level changes.
X Drive in a manner appropriate for the current vehicle level.
X Ensure sufficient ground clearance.
X Allow the compressor to cool down.
When the compressor has cooled down, the display message dis-
appears. The vehicle then continues rising to the selected level. Display
messages
275On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions Blind Spot Assist
Blind Spot Assist
currently unavaila‐ currently unavaila‐
ble ble
See
SeeOwner's
Owner's Man‐
Man‐
ual
ual orActive BlindActive Blind
Spot Assist cur‐
Spot Assist cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual Blind Spot Assist or Active Blind Spot Assist is temporarily inoperative.
Possible causes:
R The radar sensor system is outside the operating temperature
range.
R The radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation.
The yellow 9indicator lamps also light up in the exterior mirrors.
Once the causes listed above no longer apply, the display message
goes out.
Blind Spot Assist or Active Blind Spot Assist is operational again.
If the display message does not disappear:
X Stop the vehicle, paying attention to road and traffic conditions.
X Safeguard the vehicle against rolling away (Y page 168).
X Restart the engine. Blind Spot Assist Blind Spot Assist
not available when not available when
towing a trailer towing a trailer
See Owner's Man‐ See Owner's Man‐
ual ual
orActive BlindActive Blind
Spot Assist not
Spot Assist not
available when tow‐ available when tow‐
ing a trailer See ing a trailer See
Owner's Manual Owner's Manual Blind Spot Assist or Active Blind Spot Assist is deactivated while tow-
ing a trailer.
You have established the electrical connection between the trailer and
your vehicle.
X Press aon the steering wheel to confirm the display message. Blind Spot Assist Blind Spot Assist
inoperative inoperativeorActive
Active
Blind Spot Assist
Blind Spot Assist
inoperative inoperative Blind Spot Assist or Active Blind Spot Assist is faulty.
The yellow 9indicator lamps also light up in the exterior mirrors.
X Consult a qualified specialist workshop. Parking Pilot can‐
Parking Pilot can‐
celled celled The driver's door is open.
X Repeat the parking space measurement and parking manoeuvre
with the driver's door closed. You inadvertently touched the multifunction steering wheel while
steering intervention was active.
X While steering intervention is active, make sure not to touch the
multifunction steering wheel. The vehicle has started to skid and ESP
®
has intervened.
X Use Parking Pilot again later (Y page 204).Parking Pilot inop‐ Parking Pilot inop‐
erative erative PARKTRONIC Parking Assist is malfunctioning or faulty.
X Follow the instructions and helpful hints in the "Problems with
PARKTRONIC Parking Assist" section (Y page 203).
If the multifunction display still shows the display message:
X Consult a qualified specialist workshop. Display
messages
279On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions j
Check Check
trailer
trailer hitch
hitch
lock
lock The trailer tow hitch is not operational.
A warning tone also sounds.
G WARNING
If the ball coupling is not in the locked position, the trailer may come
loose. There is a risk of an accident.
X Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 168).
X Uncouple the trailer and secure it against rolling away.
X Initiate a new swivelling procedure (Y page 235).
X When the display message disappears, re-couple the trailer.
If the display message continues to be displayed: X Do not re-couple the trailer.
X Check the ground clearance and continue driving without the
trailer.
X Consult a qualified specialist workshop. j
Trailer coupling Trailer coupling
extending extending The ball coupling is swivelled out or in.
Only swivel the ball coupling in or out when the vehicle is stationary.
No trailer may be coupled during the swivelling procedure. Do not
attempt to speed up, slow down or initiate the swivelling process using your hand, foot or other aids.
X Move the ball coupling of the trailer tow hitch to an operational
position (Y page 235). &
inoperative inoperative
Battery
Battery
low
low The on-board voltage is too low.
The auxiliary heating has switched itself off or cannot be switched on
(Y page 140).
X Drive for a considerable distance.
The battery charges. The auxiliary heating is operational again as
soon as the on-board electrical system voltage is sufficient. &
inoperative Refuel inoperative Refuel
vehicle vehicle There is too little fuel in the fuel tank. The auxiliary heating cannot be
switched on (Y page 140).
X Refuel at the nearest filling station. &
inoperative inoperative
See
SeeOwn‐
Own‐
er's Man.
er's Man. The auxiliary heating is temporarily malfunctioning or faulty.
X When the vehicle is on a level surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heating,
waiting several minutes between each attempt (Y page 140).
If the auxiliary heating does not switch on: X Consult a qualified specialist workshop. 288
Display
messagesOn-board computer and displays

Safety
Seat belts Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ü
N
Only for certain countries: the red seat belt warning lamp lights up for 6 seconds
after the engine starts.
The seat belt warning lamp reminds the driver and front passenger to fasten their
seat belts.
X Fasten your seat belt (Y page 46).ü
N
Only for certain countries: the red seat belt warning lamp lights up after the
engine starts. In addition, a warning tone sounds for up to 6 seconds.
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 46).
The warning tone ceases. ü
N
The red seat belt warning lamp lights up after the engine starts, as soon as the
driver's or the front-passenger door is closed.
The driver or passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 46).
The warning lamp goes out.
There are objects on the front-passenger seat.
X Remove the objects from the front-passenger seat and stow them in a secure
place.
The warning lamp goes out. ü
N
The red seat belt warning lamp flashes and an intermittent audible warning
sounds.
The driver or passenger has not fastened their seat belt. At the same time, you are
driving faster than 25 km/h or have briefly driven faster than 25 km/h.
X Fasten your seat belt (Y page 46).
The warning lamp goes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. At the same time, you are driving
faster than 25 km/h or have briefly driven faster than 25 km/h.
X Remove the objects from the front-passenger seat and stow them in a secure
place.
The warning lamp goes out and the intermittent warning tone ceases. Warning and indicator lamps in the instrument cluster
291On-board computer and displays Z

X
Select a favourite.
X Add a favourite at the desired position.
If a favourite has already been added at this
position, it will be overwritten.
Adding your own favourite
X Select Vehicle VehicleQ Climate control Climate control.
X Press and hold the gbutton until the
favourites are displayed.
X Add a favourite at the desired position.
If a favourite has already been added at this
position, it will be overwritten. Navigation mode
Important safety notes G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the navigation system.
General notes Correct functioning of the navigation system
depends, amongst other things, on GPS recep-
tion. In certain situations, GPS reception may be
impaired, there may be interference or there
may be no reception at all, e.g. in tunnels or
multi-storey car parks.
Audio 20 is equipped with Garmin ®
MAP PILOT;
see the manufacturer's operating instructions.
The Garmin ®
MAP PILOT operating instructions
are stored on the SD card as a PDF file. The SD card box contains a quick guide.
The following descriptions apply to navigation
with COMAND Online. Further information can
be found in the Digital Owner's Manual. Selecting a route type and route options Multimedia system:
X Select Navi
Navi QNavigationNavigation.
The map displays the current vehicle position.
X Slide 6the controller.
X Select Options OptionsQ Route settings
Route settings .
Notes for route types:
R Eco route
Eco route
R Dynamic route
Dynamic route
Traffic reports on the route are taken into
account for the route guidance (not available
in all countries).
R Dynamic route only after request Dynamic route only after request
You can decide whether or not current traffic
reports should be taken into account for route
calculation (not available in all countries).
R Calculate alternative routes Calculate alternative routes
Different routes are being calculated. In order
to do so, instead of Start Start, select the menu
item Continue
Continue .
X To avoid/use route options: selectAvoid
Avoid
options
options.
X Select a route option.
Notes for route options:
R Use toll roads
Use toll roads
The route calculation includes roads which
require you to pay a usage fee (toll).
R Use vignette roads Use vignette roads (not available in all
countries)
The route calculation includes roads which
require you to pay a time-based fee (vignette).
A vignette allows temporary use of the route
network, e. g. 10 days or 1 year.
Entering an address Multimedia system:
X Select Navi NaviQNavigationNavigation.
The map displays the current vehicle position.
X Slide 6the controller.
X Select Destination DestinationQ Address entry Address entry.
Enter an address, e.g. as follows:
R town or postcode, street, house number
R country, town or postcode
R town or postcode, centre
R street, town or postcode, junction Operating system
305Multimedia system Z