2019 MERCEDES-BENZ GLE ECU

Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00E9
0051
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 front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 48).
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. 00E9
0051
The red seat belt warning lamp flashes and an intermittent audible warning
sounds.
The driver or front passenger has not fastened their seat belt. The vehicle is being driven faster than 15 mph (25 km/h) or has briefly been driven faster than 15 mph
(25 km/h).
X Fasten your seat belt (Y page 48).
The warning lamp goes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. The vehicle is being driven faster
than 15 mph (25 km/h) or has briefly been driven faster than 15 mph (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
275On-board computer and displays Z

Safety systems
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 004D0027
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp is lit
while the engine is running.
A warning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics may be
affected.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances.
X Secure the vehicle against rolling away (Y page 156).
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display. 004D0027
0051
0027 (USA only), 004D(Canada only): the red brake system warning lamp is lit
while the engine is running.
A warning tone also sounds.
G WARNING
There is not enough brake fluid in the brake fluid reservoir.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions. Do not continue driving under any circumstances.
X Secure the vehicle against rolling away (Y page 156).
X Do not add brake fluid. Adding more will not correct the malfunction.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction display. 0027
0051
USA only: the red brake system warning lamp is lit while the engine is running.
The multifunction display also shows a display message with the 0026symbol.
The brake pads/linings have reached their wear limit.
X Visit a qualified specialist workshop. 276
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Engine
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00B9
0051
The yellow Check Engine warning lamp lights up while the engine is running.
There may be a malfunction, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system (for vehicles with gasoline engines)
R in the fuel system
The emission limit values may be exceeded and the engine may be in emergency mode.
X Visit a qualified specialist workshop immediately.
Vehicles with a diesel engine: the fuel tank has been run dry (Y page 153).
X Start the engine three to four times after refueling.
If the yellow Check Engine warning lamp goes out, emergency running mode is
canceled. The vehicle need not be checked.
In some states, you must immediately visit a qualified specialist workshop as soon
as the yellow Check Engine warning lamp lights up. This is due to the legal require- ments in effect in these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving. 00B6
0051
The yellow reserve fuel warning lamp lights up while the engine is running.
The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station. 00B6
0051
The yellow reserve fuel warning lamp flashes while the vehicle is in motion.
In addition, the 00B9Check Engine warning lamp may light up.
The fuel filler cap is not closed correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler cap.
X If the fuel filler cap is closed: visit a qualified specialist workshop.00AC
0051
The red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the scale.
The temperature sensor for the coolant temperature gauge is malfunctioning.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions. Do not continue driving under any circumstances.
X Secure the vehicle against rolling away (Y page 156).
X Consult a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
283On-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 156).
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 156).
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 156).
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 358).
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

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

X
Authorization using Secure Simple Pair-
ing:
A code is displayed in the multimedia system
and on the mobile phone.
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: select No
No on the
multimedia system.
The process is canceled.
Repeat authorization.
or X Authorization by entering a passkey
(passcode):
enter any one- to sixteen-digit
number sequence which you have chosen
yourself into the passkey input menu.
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).
Symbols in the device manager The symbols are shown in color depending on
their use. Symbol Explanation
Mobile phone connected to the
multimedia system
Main telephone with full range of
functions
Additional telephone for incoming
calls in two telephone mode Media mode
General notes If you wish to play external media sources, the
appropriate media mode must already be turned
on. Further information on media mode (see the Digital Operator's Manual). The following external media sources can be
used:
R Apple ®
devices (e.g. iPhone ®
)
R USB devices (e.g. USB stick, MP3 player)
(Y page 294)
R CD
R DVD (COMAND)
R SD cards
R Via devices connected by Bluetooth ®
i Information on single CD/DVD drive or DVD
changer (see the Digital Operator's Manual).
Selecting using the device list Multimedia system:
X Select Media
Media007B Devices Devices.
The available media sources will be shown.
The 003Bdot indicates the current setting.
X Select the media source.
Playable files are played.
Inserting/removing an SD card Important safety notes
G
WARNING
SD cards are small parts. They can be swal-
lowed and cause choking. This poses an
increased risk of injury or even fatal injury.
Keep the SD card out of the reach of children. If a SD card is swallowed, seek medical atten-
tion immediately.
! If the SD card is no longer in use, you should
take it out and remove it from the vehicle.
High temperatures can damage the card.
Inserting an SD card
The SD card slot is located on the control panel. X Insert the SD card into the SD card slot until
the SD card engages. The side with the con-
tacts must face down.
Removing an SD card X Press the SD card.
The SD card is ejected.
X Remove the SD card. Operating system
293Multimedia system Z