2019 MERCEDES-BENZ GLS SUV air condition

Display messages
Possible causes/consequences and
0050
0050Solutions Act.
Act.
Distance
Distance Assist
Assist
- - - mph
- - - mph A condition for activating Active Distance Assist DISTRONIC has not
been met.
X Check the activation conditions for Active Distance Assist
DISTRONIC (Y page 172). Active Steering Active Steering
Assist Currently Assist Currently
Unavailable; see Unavailable; see
Operator's Manual Operator's Manual Active Steering Assist is temporarily inoperative.
Possible causes are:
R the windshield in the camera's field of vision is dirty
R visibility is impaired due to heavy rain, snow or fog
R there have been no lane markings for an extended period
R the lane markings are worn away, dark or covered up, e.g. by dirt or
snow
When the causes stated above no longer apply, the display message
disappears.
Active Steering Assist is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Clean the windshield. Active Steering Active Steering
Assist Inoperative Assist Inoperative Active Steering Assist is faulty.
However, the Active Distance Assist DISTRONIC functions are still
available.
A warning tone also sounds.
X Visit a qualified specialist workshop. Cruise Cruise
Control
Control Inop‐
Inop‐
erative
erative Cruise control is malfunctioning.
X Visit a qualified specialist workshop. Cruise Control
Cruise Control
--- mph --- mph R
A condition for activating cruise control has not been met.
You have tried to store a speed below 20 mph (30 km/h), for exam-
ple.
R ESP ®
is deactivated The yellow ESP ®
OFF warning lamp is lit.
X If conditions permit, drive faster than 20 mph (30 km/h) and store
the speed.
or X Check the activation conditions for cruise control (Y page 171).
or
X Reactivate ESP ®
(Y page 71). Cruise Control Off Cruise Control Off Cruise control has been deactivated.
If a warning tone also sounds, cruise control has deactivated auto-
matically (Y page 171). Display
messages
267On-board computer and displays Z

Tires
Display messages
Possible causes/consequences and
0050
0050Solutions Check
Check
Tire
TirePressure
Pressure
Soon
Soon The tire pressure loss warning system has detected a significant loss
in pressure.
A warning tone also sounds.
Possible causes:
R you have changed the positions of the wheels and tires or installed
new wheels and tires
R the tire pressure in one or more tires has dropped significantly
G WARNING
Tire pressures that are too low pose the following hazards: R they may burst, especially as the load and vehicle speed increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may be
greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 158).
X Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 335).
X Check the tire pressures and, if necessary, correct the tire pressure.
X Restart the tire pressure loss warning system when the tire pres-
sure is correct (Y page 359). Check Check
Tire
TirePressure
Pressure
Then Restart Run
Then Restart Run
Flat Indicator Flat Indicator The tire pressure loss warning system generated a display message
and has not been restarted since.
X Set the correct tire pressure in all four tires.
X Restart the tire pressure loss warning system (Y page 359).Run Flat Indicator Run Flat Indicator
Inoperative Inoperative The tire pressure loss warning system is faulty.
X Visit a qualified specialist workshop. 0077
Rectify Tire Pres‐ Rectify Tire Pres‐
sure sure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressure (Y page 359).
X If necessary, correct the tire pressure.
X When the tire pressure is correct, restart the tire pressure moni-
toring system (Y page 362).268
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 0077
Check Tire(s) Check Tire(s) The tire pressure in one or more tires has dropped significantly. The
wheel position is displayed in the multifunction display.
A warning tone also sounds.
G WARNING
Tire pressures that are too low pose the following hazards: R they may burst, especially as the load and vehicle speed increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may be
greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 158).
X Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 335).
X Check the tire pressure (Y page 359).
X If necessary, correct the tire pressure. 0077
Warning Tire Mal‐ Warning Tire Mal‐
function function The tire pressure in one or more tires has dropped suddenly. The wheel
position is shown in the multifunction display.
G WARNING
Driving with a flat tire poses a risk of the following hazards: R a flat tire affects the ability to steer or brake the vehicle
R you could lose control of the vehicle.
R continued driving with a flat tire will cause excessive heat build-up
and possibly a fire
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 158).
X Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 335). Tire Tire
Press.
Press. Monitor
Monitor
Currently Unavaila‐
Currently Unavaila‐
ble ble Because there is interference from a strong source of radio waves, no
signals from the tire pressure sensors are detected. The tire pressure monitor is temporarily malfunctioning.
X Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been resolved. 0077
TirePress. Sen‐ TirePress. Sen‐
sor(s) Missing sor(s) Missing There is no signal from the tire pressure sensor of one or several tires.
The pressure of the affected tire is not displayed in the multifunction
display.
X Have the faulty tire pressure sensor replaced at a qualified special-
ist workshop. Display
messages
269On-board computer and displays Z

Warning/
indicator
lamp
0051
0051 Signal type
Possible causes/consequences and 0050 0050Solutions 00AC
0051
The red coolant warning lamp comes on while the engine is running.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may be blocked or the electric engine radiator fan may be defective.
The coolant is too hot and the engine is no longer being cooled sufficiently.
X Observe the additional display messages in the multifunction display.
X Pull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Leave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
X Check the coolant level and add coolant, observing the warning notes
(Y page 324).
X If you have to add coolant frequently, have the engine cooling system checked.
X Make sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
X Do not start the engine again until the coolant temperature is below 248 ‡
(120 †). Otherwise, the engine could be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic. 00AC
0051
The red coolant warning lamp comes on while the engine is running.
The coolant temperature has exceeded 248 ‡ (120 †). The airflow to the engine radiator may be blocked or the coolant level may be too low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some fluids which
may have leaked into the engine compartment to catch fire.
Steam from the overheated engine can also cause serious burns which can occur just by opening the hood.
There is a risk of injury.
X Observe the additional display messages in the multifunction display.
X Pull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Leave the vehicle and keep a safe distance from the vehicle until the engine has
cooled down.
X Check the coolant level and add coolant, observing the warning notes
(Y page 324).
X If you have to add coolant frequently, have the engine cooling system checked.
X Make sure that the air supply to the engine radiator is not blocked, e.g. by snow,
slush or ice. 284
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Tires
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 0077
0051
The yellow tire pressure monitor warning lamp (pressure loss/malfunction) is lit.
The tire pressure monitor has detected a loss of pressure in at least one of the tires.
G WARNING
Tire pressures that are too low pose the following hazards: R they may burst, especially as the load and vehicle speed increase.
R they may wear excessively and/or unevenly, which may greatly impair tire trac-
tion.
R the driving characteristics, as well as steering and braking, may be greatly
impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking maneuvers. Pay
attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 158).
X Observe the additional display messages in the multifunction display.
X Check the tires and, if necessary, follow the instructions for a flat tire
(Y page 335).
X Check the tire pressure (Y page 359).
X If necessary, correct the tire pressure. 0077
0051
The yellow tire pressure monitor warning lamp (pressure loss/malfunction)
flashes for approximately one minute and then remains lit.
The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction display.
X Visit a qualified specialist workshop immediately. 286
Warning and indicator lamps in the instrument clusterOn-board computer and displays

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

Favorites button
You can assign predefined functions using the
007D favorites button and call them up by press-
ing the button (Y page 289). Favorites
Calling up and exiting favorites X
To call up: press the007Dbutton on the con-
troller.
X Select a favorite, e.g. Vehicle
Vehicle.
The favorites are displayed.
X To exit: press the 007Dbutton again.
Adding favorites Adding predefined favorites
X
Press the 007Dbutton.
X COMAND: slide6the controller.
X Audio 20: slide5or6 the controller.
The menu bar is displayed.
X Select Reassign
Reassign.
The categories are displayed.
X Select a category.
The favorites are displayed.
X Select a favorite.
X COMAND: to add the favorite to the desired
position, turn and press the controller.
If a favorite has already been added at this
position, it will be overwritten.
X Audio 20: to add the favorite to the desired
position, turn, slide 5or6 and press the
controller.
If a favorite has already been added at this
position, it will be overwritten.
Adding your own favorites
You can add climate control as a favorite, for
example. X Select Vehicle
Vehicle007BVehicle Settings Vehicle Settings.
X Press and hold the 007Dbutton until the
favorites are displayed.
X Add a favorite to the desired position.
If a favorite has already been added at this
position, it will be overwritten. Navigation mode
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 navigation system.
General notes Among other things, correct functioning of the
navigation system depends on GPS reception. 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
parking garages.
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. Further information can be
found in the Digital Operator's Manual.
Selecting a route type and route options Multimedia system:
X Select Navi
Navi007BNavigation Navigation.
The map shows the vehicle's current position.
X Slide 6the controller.
X Select Options
Options007BRoute Settings Route Settings.
Notes for route types:
R Eco Route Eco Route
R Dynamic Traffic Route
Dynamic Traffic Route Operating system
289Multimedia system Z

The system offers various services, e.g.:
R Automatic and manual emergency call
R Roadside Assistance call
R Info call
You can find information and a description of all
available features under "Owners Online" at
http://www.mbusa.com.
System self-test After you have switched on the ignition, the sys-
tem carries out a self-diagnosis.
A malfunction in the system has been detected
if one of the following occurs:
R The indicator lamp in the SOS button does not
come on during the system self-test.
R The indicator lamp in the 0052Roadside
Assistance call button does not light up dur-
ing self-diagnosis of the system.
R The indicator lamp in the 00D9Info call button
does not light up during the system self-diag-
nosis.
R The indicator lamp in one or more of the fol-
lowing buttons continues to light up red after
the system self-diagnosis:
- SOS button
- 0052 Roadside Assistance call button
- 00D9 Info call button
R The Inoperative
Inoperative or theService Not Service Not
Activated
Activated message appears in the multi-
function display after the system self-diagno- sis.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In the
event of an emergency, help will have to be
summoned by other means.
Have the system checked at the nearest author- ized Mercedes-Benz Center or call the following
telephone assistance services:
Mercedes-Benz Customer Assistance Center at
1-800-FOR-MERCedes (1-800-367-6372) or
1-866-990-9007. Emergency call Important safety notes
G
WARNING
It can be dangerous to remain in the vehicle,
even if you have pressed the SOS button in an emergency if:
R you see smoke inside or outside of the vehi-
cle, e.g. if there is a fire after an accident
R the vehicle is on a dangerous section of
road
R the vehicle is not visible or cannot easily be
seen by other road users, particularly whendark or in poor visibility conditions
There is a risk of an accident and injury.
Leave the vehicle immediately in this or simi-
lar situations as soon as it is safe to do so.
Move to a safe location along with other vehi-
cle occupants. In such situations, secure the
vehicle in accordance with national regula-
tions, e. g. with a warning triangle.
General notes
Observe the notes on system activation
(Y page 309).
The emergency call is triggered automatically if
an air bag is deployed or an Emergency Ten-
sioning Device is triggered. You cannot end an
automatically triggered emergency call yourself.
An emergency call can also be initiated man-
ually.
As soon as the emergency call has been initi-
ated, the indicator lamp in the SOS button
flashes. The Connecting Call Connecting Call message
appears in the multifunction display.
The audio output is muted.
Once the connection has been made, the Call Call
Connected
Connected message appears in the multifunc-
tion display.
All important information on the emergency is
transmitted, for example:
R Current location of the vehicle (as determined
by the GPS system)
R Vehicle identification number
R Information on the severity of the accident
Shortly after the emergency call has been initi-
ated, a voice connection is automatically estab- 310
FeaturesStowage and features