2019 MERCEDES-BENZ GLS change time

R
is affected more by strong crosswinds
R demands more sensitive steering
R has a larger turning circle
This could impair the handling characteristics.
When towing a trailer, always adjust your speed to the current road and weather conditions. Do
not exceed the maximum permissible speed for
your vehicle/trailer combination. Notes on towing a trailer
General notes !
If you have a trailer tow hitch retrofitted,
changes to the cooling system and drive train may be necessary, depending on the vehicle
type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chassis
frame.
R Do not exceed the legally prescribed maxi-
mum speed for vehicle/trailer combinations
in the relevant country.
This lowers the risk of an accident.
R Only install an approved trailer coupling on
your vehicle.
More information on availability and installa-
tion can be obtained at any qualified special-
ist workshop.
R The bumpers of your vehicle are not suitable
for installing detachable trailer couplings.
R Do not install hired trailer couplings or other
detachable trailer couplings on the bumpers
of your vehicle.
R If you no longer need the ball coupling,
remove it from the ball coupling recess. This
will reduce the risk of damage to the ball cou-
pling.
When towing a trailer, set the tire pressure on
the rear axle of the towing vehicle for the max-
imum load. You will find the values in the tire
pressure table in the fuel filler flap of the vehicle (Y page 371).
Please note that when towing a trailer, the fol-
lowing driving systems have limited availability
or are not available at all:
R Parking Assist PARKTRONIC (Y page 189)
R Blind Spot Assist (Y page 207)
R Active Lane Keeping Assist (Y page 212)On vehicles without level control, the height of
the ball coupling will alter according to the load
placed on the vehicle. If necessary, use a trailer
with a height-adjustable drawbar.
You will find installing dimensions and loads
under "Technical data" (Y page 392).
Driving tips Also observe the notes on pulling away with a
trailer (Y
page 143).
The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginning the journey, check the
trailer's documents to see what the maximum
permissible speed is for your trailer. Observe the
legally permissible maximum speed in the rele-
vant country.
For certain Mercedes-Benz vehicles, the maxi-
mum permissible rear axle load is increased
when towing a trailer. See "Technical data" to
find out whether this applies to your vehicle
(Y page 392). If you utilize any of the added
maximum rear axle load when towing a trailer,
the vehicle/trailer combination may not exceed
a maximum speed of 60 mph (100 km/h) for
reasons concerning the operating permit. This
also applies in countries in which the maximum
permissible speed for car/trailer combinations
is greater than 60 mph (100 km/h).
When towing a trailer, your vehicle's handling
characteristics will be different in comparison
with when driving without a trailer.
Use the left-hand steering wheel paddle shifter
to shift into a lower gear in good time on long
and steep downhill gradients.
This also applies if you have activated cruise
control or Active Distance Assist DISTRONIC.
This will use the braking effect of the engine, so that less braking will be required to maintain the
speed. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly. If you need additional
braking, depress the brake pedal repeatedly
rather than continuously.
Driving tips If the trailer swings from side to side:
X Do not accelerate.
X Do not counter-steer.
X Brake if necessary. 222
Towing a trailerDriving and parking

There is a short delay before a change in outside
temperature appears in the multifunction dis-
play. Coolant temperature gauge
G
WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! If the coolant temperature is too high, a dis-
play message is shown.
If the coolant temperature display is in the
area marked in red, do not continue driving.
Otherwise, the engine will be damaged.
The coolant temperature gauge is in the instru-
ment cluster on the right-hand side (Y page 37).
Under normal operating conditions and with the specified coolant level, the coolant temperature gauge may rise to the red marking. Operating the on-board computer
Overview 0043
Multifunction display
0044 Right control panel
0087 Left control panel
X To activate the on-board computer: turn
the SmartKey to position 0047in the ignition
lock.
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel.
Vehicles with the COMAND multimedia system: you can find further information on the Voice
Control System in the separate operating
instructions.
Vehicles with the Audio 20 multimedia system:
you can find further information on voice-oper-
ated control for navigation in the manufactur-
er's operating instructions. Displays and operation
231On-board computer and displays Z

Settings menu
Introduction Depending on the equipment installed in the
vehicle, In the
Sett. Sett.menu you have the follow-
ing options:
R Changing the instrument cluster settings
(Y page 240)
R Changing the light settings (Y page 240)
R Changing the vehicle settings (Y page 241)
R Changing the convenience settings
(Y page 241)
R Restoring the factory settings (Y page 242)
Instrument cluster submenu Selecting the distance unit
The Display Unit Speedometer / Odome‐ Display Unit Speedometer / Odome‐
ter:
ter: function allows you to choose whether
certain displays appear in kilometers or miles in
the multifunction display.
X Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett. menu.
X Press the 0064or0063 button to select the
Instrument Cluster
Instrument Cluster submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Display Unit Speedometer / Odometer
Display Unit Speedometer / Odometer
function.
You will see the selected setting: km kmormiles
miles.
X Press the 0076button to save the setting.
The selected unit of measurement for distance
applies to:
R Digital speedometer in the Trip
Trip menu
R Odometer and the trip odometer
R Trip computer
R Current consumption and the range
R Navigation instructions in the Navi
Navimenu
R Cruise control
R Active Distance Assist DISTRONIC
R ASSYST PLUS service interval display
Selecting permanent display
The Permanent Display:
Permanent Display: function allows you
to choose whether the multifunction display
always shows the outside temperature or the
speed. The speed display is inverse to the speedome-
ter.
X Press the 0059or0065 button on the steering
wheel to select the Sett. Sett.menu.
X Press the 0064or0063 button to select the
Instrument Cluster
Instrument Cluster submenu.
X Confirm by pressing 0076on the steering
wheel.
X Press the 0064or0063 button to select the
Permanent Display:
Permanent Display: function.
The current setting, Outside Temperature
Outside Temperature,
Speedometer [km/h]
Speedometer [km/h] orSpeedometer
Speedometer
[mph]
[mph] appears.
X To change the setting: press0076again.
Light submenu Setting the daytime running lamps
This function is not available in Canada.
X Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett.menu.
X Press the 0064or0063 button to select the
Light
Light submenu.
X Press 0076to confirm.
X Press 0064or0063 to select the Daytime
Daytime
Running Lights
Running Lights function.
If the Daytime
Daytime Running
RunningLights
Lightsfunction has
been switched on, the cone of light and the
0086 symbol in the multifunction display are
shown in orange.
X Press the 0076button to save the setting.
Further information on daytime running lamps
(Y page 115).
Switching the Intelligent Light System
on/off
X Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett. menu.
X Press the 0064or0063 button to select the
Light Light submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Intell. Light System
Intell. Light System function.
If the Intell. Light System
Intell. Light System function has
been switched on, the cone of light and the
0058 symbol in the multifunction display are
shown in orange.
X Press the 0076button to save the setting.
When you activate Intell. Light System Intell. Light System,
you activate the following functions: 240
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 00A8 There is only a very small amount of fuel in the fuel tank.
X Refuel at the nearest gas station without fail. 00B6
Gas Cap Loose Gas Cap Loose The fuel filler cap is not closed correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
X Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X Visit a qualified specialist workshop. Driving systems
Display messages
Possible causes/consequences and
0050 0050Solutions 00AD
Attention Assist: Attention Assist:
Take a Break! Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue or
a lack of 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 you get
enough rest. 00AD
Attention Assist Attention Assist
Inoperative Inoperative ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop. 00C4
Drive More Slowly Drive More Slowly You cannot change the vehicle level.
Possible causes are:
R You are driving too fast for the selected vehicle level
R You are driving too fast with a trailer or the trailer-coupling socket is
being used, e.g. for a bicycle rack
X Drive more slowly and then select the desired vehicle level again.
R Vehicles with the Off-Road Engineering package (Y page 180)
R Vehicles with the AIRMATIC package (Y page 187)
X Observe the notes on towing a trailer (Y page 222).00C4
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 Make sure that there is 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
261On-board computer and displays Z

General notes
The multimedia system section in this Opera-
tor's Manual describes the basic principles for
operation. More information can be found in the Digital Operator's Manual. Important safety notes
G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle. There is a risk of an acci-
dent.
Only operate this equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for the country in which you are currently driving whenoperating the multimedia system.
The multimedia system calculates the route to
the destination without taking the following into
account, for example:
R traffic lights
R stop and yield signs
R parking or stopping restrictions
R road narrowing
R other road and traffic rules and regulations
The multimedia system may give incorrect nav-
igation recommendations if the actual street/
traffic situation does not correspond with the
digital map's data.
For example:
R a diverted route
R the road layout or the direction of a one-way
street has been changed
For this reason, you must always observe road
and traffic rules and regulations during your
journey. Road and traffic rules and regulations
always have priority over multimedia system
driving recommendations. Navigation announcements are intended to
direct you while driving without diverting your
attention from the road and driving.
Please always use this feature instead of con-
sulting the map display for directions. Looking
at the icons or map display can distract you from
traffic conditions and driving, and increase the
risk of an accident.
This equipment complies with FCC radiation
exposure limits set forth for uncontrolled equip-
ment and meets the FCC radio frequency (RF)
Exposure Guidelines in Supplement C to OET65.
This equipment has very low levels of RF energy that is deemed to comply without maximum
permissive exposure evaluation (MPE). How-
ever, it is recommended to install it at a distance
of at least 8 inches (approx. 20 cm) between the
radiation source and a person's body (not
including limbs such as hands, wrists, feet and
legs). G
WARNING
Modifications to electronic components, their software as well as wiring can impair their
function and/or the function of other net-
worked components. In particular, systems
relevant to safety could also be affected. As a
result, these may no longer function as inten-
ded and/or jeopardize the operating safety of
the vehicle. There is an increased risk of an
accident and injury.
Never tamper with the wiring as well as elec-
tronic components or their software. You
should have all work to electrical and elec-
tronic equipment carried out at a qualified
specialist workshop. Function restrictions
For safety reasons, some functions are restric-
ted or unavailable while the vehicle is in motion. You will notice this, for example, because either
you will not be able to select certain menu items or a message will appear to this effect. Function restrictions
287Multimedia system Z

Operating system
Overview
General notes !
Do not use the space in front of the display
for storage. Objects placed here could dam-
age the display or impair its function. Avoid
any direct contact with the display surface.
Pressure on the display surface may result in
impairments to the display, which could be
irreversible.
Wearing polarized sunglasses may impair your
ability to read the display.
The display has an automatic temperature-con- trolled switch-off feature. The brightness is
automatically reduced if the temperature is too
high. The display may temporarily switch off
completely.
Cleaning instructions !
Do not touch the display. The display has a
very sensitive high-gloss surface; there is a
risk of scratching. If you have to clean the
screen, however, use a mild cleaning agent
and a soft, lint-free cloth.
The display must be switched off and have
cooled down before you start cleaning. Do not
apply pressure to the display surface when
cleaning it, as this could cause irreversible dam-
age to the display.
Switching the multimedia system
on/off X
Press the 0043control knob.
Adjusting the volume X
Turn the 0043control knob.
The volume is adjusted:
R for the currently selected media source
R during traffic or navigation announcements
R in hands-free mode during an active call
Switching the sound on or off X
Press the 0063button on the control panel.
If the audio output is switched off, the status
line will show the 0063symbol. If you switch the media source or set the volume, the sound
is automatically switched on.
i Navigation announcements will be heard
even if the sound is muted.
Functions The multimedia system has the following func-
tions:
R Radio mode
R Media mode with media search
R Sound systems
R Navigation system
COMAND: navigation via the hard drive
Audio 20: navigation via SD card
R Communication functions
R SIRIUS Weather (COMAND)
R Vehicle functions with system settings
R Favorites functions
Controller The controller in the center console lets you:
R select menu items on the display
R enter characters
R select a destination on the map
R save entries
The controller can be:
R turned 3
R slid left or right 1
R slid forwards or back 4
R slid diagonally 2
R pressed briefly or pressed and held 7
Back button You can use the
0038button to exit a menu or to
call up the main menu of the current operating
mode.
X To exit the menu: briefly press the0038
button.
The multimedia system changes to the next
higher menu level in the current operating
mode.
X To call up the main menu: press the0038
button for longer than two seconds.
The multimedia system changes to the main
menu of the current operating mode. 288
Operating systemMultimedia system

Connecting a mobile phone
(COMAND)
Requirements For telephony via the Bluetooth
®
interface, you
require a Bluetooth ®
-capable mobile phone. The
mobile phone must support Hands-Free Profile
1.0 or above.
Multimedia system:
X Select Vehicle
Vehicle007BSystem Set‐ System Set‐
tings tings007B Activate Bluetooth
Activate Bluetooth .
X Activate Bluetooth ®
0073.
Mobile phone:
X Activate Bluetooth ®
and, if necessary, Blue-
tooth ®
visibility for other devices (see the
manufacturer's operating instructions).
The Bluetooth ®
device names for all of one man-
ufacturer's products might be identical. To
make it possible to clearly identify your mobile
phone, change the device name (see the man-
ufacturer's operating instructions).
If the mobile phone supports the PBAP (Phone
Book Access Profile) and MAP (Message
Access Profile) Bluetooth ®
profiles, the follow-
ing information will be transmitted after you
connect:
R Phone book
R Call lists
R Text messages and e-mail
i Further information on suitable mobile
phones can be found at: http://
www.mercedes-benz.com/connect
i In the USA, you can get in touch with the
Mercedes-Benz Customer Assistance Center
on 1-800-FOR-MERCedes (1-800-367-6372 ).
In Canada, you can get in touch with the Cus-
tomer Relations Center on 1-800-387-0100.
Searching for and authorizing (connect-
ing) a mobile phone Before using your mobile phone with the multi-
media system for the first time, you will need to
search for the phone and then authorize (con-
nect) it. Depending on the mobile phone, author- ization either takes place by means of Secure
Simple Pairing or by entering a passkey. The
multimedia system automatically makes the procedure that is relevant for your mobile phone
available. The mobile phone is always connec-
ted automatically after authorization. Further
information on using a mobile phone with the
multimedia system (see the Digital Operator's
Manual).
If the multimedia system does not detect your
mobile phone, this may be due to particular
security settings on your mobile phone (see the manufacturer's operating instructions).
Only one mobile phone can be connected to the
multimedia system at any one time.
Searching for a mobile phone
Multimedia system:
X Select Tel/ Tel/00A7007BConn. Conn.
Device
Device007BSearch for Phones Search for Phones007BStart Start
Search
Search.
The available mobile phones are displayed.
Symbols in the device list Sym-
bol Explanation
00D3
New mobile phone found, not yet
authorized.
00DC
Mobile phone is authorized, but is
not connected.
Connecting a mobile phone
Authorization using Secure Simple Pairing:
X Select mobile phone.
A code is displayed in the multimedia system
and on the mobile phone.
X If codes match: selectYes Yeson the multimedia
system.
X Confirm code on the mobile phone. Depend-
ing on the mobile phone used, confirm the
connection to the multimedia system and for
the PBAP and MAP Bluetooth ®
profiles. The
prompt to confirm may take up to two
minutes to be displayed (see the manufactur-
er's operating instructions).
X If the codes are different: selectNo Noon the
multimedia system.
The process is canceled.
Repeat authorization. Operating system
291Multimedia system Z

Authorization by entering a passkey (passcode):
X Select the Bluetooth ®
name of the mobile
phone.
The input menu for the passkey is displayed.
X Choose a one to sixteen-digit number combi-
nation as a passkey.
X Enter the passkey on the multimedia system.
X Press 0054to confirm.
X Enter and confirm the passkey on the mobile
phone. Depending on the mobile phone used,
confirm the connection to the multimedia sys-
tem and for the PBAP and MAP Bluetooth ®
profiles. The prompt to confirm may take up
to two minutes to be displayed (see the man- ufacturer's operating instructions). Connecting a mobile phone (Audio 20)
Requirements For telephony via the Bluetooth
®
interface, you
require at least one Bluetooth ®
-capable mobile
phone depending on use of one-telephone
mode ortwo-telephone mode. The mobile
phone must support Hands-Free Profile 1.0 or
above.
In two-telephone mode you can use all the
functions of the multimedia system with the
main telephone. With the additional tele-
phone , you can receive incoming calls.
Multimedia system:
X Select Vehicle
Vehicle007BSystem Set‐ System Set‐
tings tings007B Activate Bluetooth
Activate Bluetooth .
X Activate Bluetooth ®
0073.
Mobile phone:
X Activate Bluetooth ®
and, if necessary, Blue-
tooth ®
visibility for other devices (see the
manufacturer's operating instructions).
The Bluetooth ®
device names for all of one man-
ufacturer's products might be identical. To
make it possible to clearly identify your mobile
phone, change the device name (see the man-
ufacturer's operating instructions). If the mobile phone supports the PBAP (P
hone
Book Access Profile) and MAP (Message
Access Profile) Bluetooth ®
profiles, the follow-
ing information is transmitted after you connect
the main telephone:
R Phone book
R Call lists
R Text messages and e-mail
i Further information on suitable mobile
phones can be found at: http://
www.mercedes-benz.com/connect
i In the USA, you can get in touch with the
Mercedes-Benz Customer Assistance Center
on 1-800-FOR-MERCedes (1-800-367-6372).
In Canada, you can get in touch with the Cus-
tomer Relations Center on 1-800-387-010 0.
Searching for and authorizing (connect- ing) a mobile phone Before using your mobile phone with the multi-
media system for the first time, you will need to
search for the phone and then authorize (con-
nect) it. Depending on the mobile phone, author- ization either takes place by means of Secure
Simple Pairing or by entering a passkey. The
multimedia system automatically makes the
procedure that is relevant for your mobile phone
available. The mobile phone is always connec-
ted automatically after authorization. Further
information on using a mobile phone with the
multimedia system (see the Digital Operator's
Manual).
If the multimedia system does not detect your
mobile phone, this may be due to particular
security settings on your mobile phone (see the manufacturer's operating instructions).
Searching for a mobile phone
Multimedia system:
X Select Tel/ Tel/00A7007BConn. Device Conn. Device007BCon‐ Con‐
nect New Device
nect New Device.
X Select Connect via Vehicle
Connect via Vehicle.
X Select mobile phone.
Connecting a mobile phone X One-telephone mode: selectConnect as
Connect as
New Main Phone
New Main Phone.
X Two-telephone mode: selectConnect as
Connect as
Additional Phone
Additional Phone when a mobile phone is
already connected. 292
Operating systemMultimedia system