tow MERCEDES-BENZ GL 2016 Repair Manual

General notes
An emergency call is dialed automatically if an
air bag or Emergency Tensioning Device is
triggered.
i You cannot end an automatically trig-
gered emergency call yourself.
An emergency call can also be initiated man-
ually.
As soon as the emergency call has been ini-
tiated, the indicator lamp in the SOS button
flashes. The multifunction display shows the
Connecting Call
message.
The audio output is muted.
Once the connection has been made, the
Call Connected
message appears in the
multifunction display.
All important information on the emergency is
transmitted, for example: R
current location of the vehicle (as deter-
mined by the GPS system) R
vehicle identification number R
information on the severity of the accident
Shortly after the emergency call has been ini-
tiated, a voice connection is automatically
established between the Customer Assis-
tance Center and the vehicle occupants. R
If the vehicle occupants respond, the
Mercedes-Benz Customer Assistance Cen-
ter attempts to get more information on the
emergency. R
If there is no response from the vehicle
occupants, an ambulance is immediately
sent to the vehicle.
If no voice connection can be established to
the Mercedes-Benz Customer Assistance
Center, the system has been unable to initiate
an emergency call.
This can occur, for example, if the relevant
mobile phone network is not available. The
indicator lamp in the SOS button flashes con-
tinuously.
The Call Failed message appears in the
multifunction display and must be confirmed. In this case, summon assistance by other
means.
Making an emergency call X
To initiate an emergency call manually:
press cover C briefly to open. X
Press SOS button D briefly.
The indicator lamp in SOS button D
flashes until the emergency call is conclu-
ded. X
Wait for a voice connection to the
Mercedes-Benz Customer Assistance Cen-
ter. X
After the emergency call, close cover C .
i If the mobile phone network is unavaila-
ble, mbrace will not be able to make the
emergency call. If you leave the vehicle
immediately after pressing the SOS button,
you will not know whether mbrace placed
the emergency call. In this case, always
summon assistance by other means.
Roadside Assistance button358
Features
Stowage and features

X
Press Roadside Assistance button C .
This initiates a call to the Mercedes-Benz
Customer Assistance Center.
The indicator lamp in Roadside Assistance
button C flashes while the call is active.
The multifunction display shows the Con‐
necting Call message. The audio output
is muted.
If a connection can be made, the Call Con‐
nected message appears in the multifunction
display.
If a mobile phone network and GPS reception
are available, the system transfers data to the
Mercedes-Benz Customer Assistance Center,
for example: R
current location of the vehicle R
vehicle identification number
i The audio system or COMAND display
indicates that a call is active. During the
call, you can change to the navigation menu
by pressing the NAVI button on COMAND,
for example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants.
From the remote malfunction diagnosis, the
Mercedes-Benz Customer Assistance Center
can ascertain the nature of the problem
( Y
page 363).
The Mercedes-Benz Customer Assistance
Center either sends a qualified Mercedes-
Benz technician or makes arrangements for
your vehicle to be transported to the nearest
authorized Mercedes-Benz Center.
You may be charged for services such as
repair work and/or towing.
Further details are available in your mbrace
manual. i The system has not been able to initiate a
Roadside Assistance call, if: R
the indicator lamp for Roadside Assis-
tance call button C is flashing continu-
ously. R
no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This can occur if the relevant mobile phone
network is not available, for example.
The Call Failed message appears in the
multifunction display. X
To end a call: press the v button on the
multifunction steering wheel.
or X
Press the corresponding button for ending
a phone call on the audio system or on
COMAND.
MB Info call button
X
Press MB Info call button C .
This initiates a call to the Mercedes-Benz
Customer Assistance Center.
The indicator lamp in MB Info call button C
flashes while the connection is being made.
The multifunction display shows the Con‐
necting Call message. The audio system
is muted.
If a connection can be made, the Call Con‐
nected message appears in the multifunction
display. Features 359
Stowage and features Z

If a mobile phone network and GPS reception
are available, the system transfers data to the
Mercedes-Benz Customer Assistance Center,
for example: R
current location of the vehicle R
vehicle identification number
i The audio system or COMAND display
indicates that a call is active. During the
call, you can change to the navigation menu
by pressing the NAVI button on COMAND,
for example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants.
You receive information about operating your
vehicle, about the nearest authorized
Mercedes-Benz Center and about other prod-
ucts and services from Mercedes-Benz.
USA only: you can find further information on
the mbrace system under "Owners Online" at
http://www.mbusa.com.
i The system has not been able to initiate
an MB Info call, if: R
the indicator lamp in MB Info call but-
ton C is flashing continuously.R
no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This can occur if the relevant mobile phone
network is not available, for example.
The Call Failed message appears in the
multifunction display. X
To end a call: press the v button on the
multifunction steering wheel.
or X
Press the corresponding button for ending
a phone call on the audio system or on
COMAND. Call priority When service calls are active, e.g. Roadside
Assistance or MB Info calls, an emergency
call can still be initiated. In this case, an emer-
gency call will take priority and override all
other active calls.
The indicator lamp of the respective button
flashes until the call is ended.
An emergency call can only be terminated by
the Mercedes-Benz Customer Assistance
Center.
All other calls can be ended by pressing: R
the v button on the multifunction steer-
ing wheel R
the corresponding button on the audio sys-
tem or on COMAND for ending a telephone
call
i When a call is initiated, the audio system
is muted. The mobile phone is no longer
connected to COMAND. However, if you
want to use your mobile phone, do so only
when the vehicle is stationary and in a safe
location.
Downloading destinations in COMAND
Downloading destinations
Downloading destinations gives you access
to a database with over 15 million points of
interest (POIs). These can be downloaded on
the navigation system in your vehicle. If you
know the destination, the address can be
downloaded. Alternatively, you can obtain the
location of Points of Interest (POIs)/impor-
tant destinations in the vicinity.
Furthermore, you can download routes with
up to 20 way points.
You are prompted to confirm route guidance
to the address entered.
The system calculates the route and subse-
quently starts the route guidance with the
address entered.
i If you select No , the address can be saved
in the address book.360
Features
Stowage and features

Vehicle remote opening You can use the vehicle remote opening if you
have unintentionally locked your vehicle and
a replacement SmartKey is not available.
The vehicle can be opened by the Mercedes-
Benz Customer Assistance Center.
The vehicle can be immediately opened
remotely within four days of the ignition being
turned off. After this time, the remote unlock-
ing may be delayed by 15 to 60 minutes. After
30 days, the vehicle can no longer be opened
remotely. X
Contact the following service hotlines: R
USA: Mercedes-Benz Customer Assis-
tance Center at 1-800-FOR-MERCedes
(1-800-367-6372) or 1-866-990-9007 R
Canada: Customer Service at
1-888-923-8367
You will be asked for your password. X
Return to your vehicle at the time agreed
upon with the Mercedes-Benz Customer
Assistance Center.
USA only: alternatively, the vehicle can be
opened via: R
the Internet, under the "Owners Online"
section R
the telephone application (e .g . for iPhone ®
,
Android)
To do this, you will need your identification
number and password.
i Vehicle remote opening is only possible if
the corresponding mobile phone network is
accessible.
Vehicle remote closing
The valet locking feature can be used when
you have forgotten to lock the vehicle and you
are no longer nearby.
The vehicle can then be locked by the
Mercedes-Benz Customer Assistance Center.
The vehicle can be immediately remotely
locked within four days of the ignition being
turned off. After this time, remote closing may be delayed by 15 to 60 minutes. After 30 days
the vehicle can no longer be locked remotely. X
Contact the following service hotlines: R
USA: Mercedes-Benz Customer Assis-
tance Center at 1-800-FOR-MERCedes
(1-800-367-6372) or 1-866-990-9007 R
Canada: Customer Service at
1-888-923-8367
You will be asked for your password.
The next time you are inside the vehicle and
you switch on the ignition, the Doors
Locked Remotely message appears in the
multifunction display.
USA only: alternatively, the vehicle can be
locked via: R
the Internet, under the "Owners Online"
section R
the telephone application (e .g . for iPhone ®
,
Android)
To do this, you will need your identification
number and password.
i The vehicle remote closing feature is
available when the relevant mobile phone
network is available and data connection is
possible.
Stolen vehicle recovery service
If your vehicle has been stolen: X
Notify the police.
The police will issue a numbered incident
report. X
This number will be forwarded to the
Mercedes-Benz Customer Assistance Cen-
ter together with your PIN.
The Mercedes-Benz Customer Assistance
Center then tries to locate the system. The
Mercedes-Benz Customer Assistance Cen-
ter contacts you and the local law enforce-
ment agency if the vehicle is located.
However, only the law enforcement agency
is informed of the location of the vehicle.
i If the anti-theft alarm system is activated
for longer than 30 seconds, the Mercedes-362
Features
Stowage and features

Benz Customer Assistance Center is auto-
matically notified.
Vehicle Health Check With the Vehicle Health Check, the Customer
Assistance Center can provide improved sup-
port for problems with your vehicle. During an
existing call, vehicle data is transferred to the
Customer Assistance Center. The customer
service representative can use the received
data to decide what kind of assistance is
required. You are then, for example, guided to
the nearest authorized Mercedes-Benz Cen-
ter or a recovery vehicle is called.
If vehicle data needs to be transferred during
an MB Info call or a Roadside Assistance call,
this is initiated by the Customer Assistance
Center. You will see the Roadside Assis‐
tance Connected message in the COMAND
display. If the vehicle remote malfunction
diagnosis can be started, the Request for
vehicle diagnosis received. Start
vehicle diagnosis? message appears in
the display. X
Confirm the message with Yes .X
When the Vehicle Diagnosis Please
start ignition message appears, turn
the SmartKey to position 2 in the ignition
lock ( Y
page 165).X
When the Please follow the instruc‐
tions received by phone and move
your vehicle to a safe position
message appears, follow the customer ser-
vice representative's instructions.
The message in the display disappears.
If you select Cancel the remote malfunc-
tion diagnosis is canceled completely.
The vehicle operating state check begins.
You will see the Vehicle diagnosis
activated message.
When the diagnosis is completed, the Trans‐
fer vehicle diagnostics data (Voice
connection may be interrupted dur‐
ing data transfer) message appears. The vehicle data can now be sent to the Customer
Assistance center. X
Press OK to confirm the message.
The voice connection with the Customer
Assistance Center is terminated.
You will see the Vehicle diagnosis:
Transferring data... message.
The vehicle data is sent to the Customer
Assistance Center.
Depending on what the customer service rep-
resentative agreed with you, the voice con-
nection is re-established after the transfer is
complete. If necessary, you will be contacted
at a later time by another means, e.g. by e-
mail or phone.
Another function of the Vehicle Health Check
is the transfer of service data to the Customer
Assistance Center. If a service is overdue, the
COMAND display shows a message about
various special offers at your workshop.
USA only: this information can also be called
up under "Owners Online" at http://
www.mbusa.com.
Information on the data stored in the vehicle
( Y
page 30).
Information on Roadside Assistance
( Y
page 26).
Downloading routes
Downloading routes allows you to transfer
and save predefined routes in the navigation
system. To do this, an SD memory card must
be inserted into the COMAND system. If no
SD memory card is inserted, you must insert
the card into the card slot on the COMAND
system before saving.
A route can be prepared and sent either by a
customer service representative or via the
mbrace portal on the Internet.
Each route can include up to 20 way points.
Once a route has been received by the navi-
gation system, you will see the name> has been saved to memory card.
Do you want to start route guidance?Features 363
Stowage and features Z

message in the COMAND display. The route is
saved to the SD memory card. X
To start route guidance: select Yes .
An overview of the route is shown in the
display.
i If you select No , the saved route can be
called up later via the navigation menu. X
Select Start .
Route guidance is started.
i Downloaded and saved data can be called
up again in COMAND.
You can find further information in the sep-
arate COMAND Operating Instructions.
Speed alert You can define the upper speed limit, which
must not be exceeded by the vehicle.
If this selected speed is exceeded by the vehi-
cle, a message will be sent to the Customer
Assistance Center. The Customer Assistance
Center then forwards this information to you.
You can select the way in which you receive
this information beforehand. Possible options
include text message, e-mail or an automated
call.
The data you receive contains the following
information: R
the location where the speed limit was
exceeded R
the time at which the speed limit was
exceeded R
the selected speed limit which was excee-
ded
Geo fencing
Geo fencing allows you to select areas which
the vehicle should not enter or leave. You will
be informed if the vehicle crosses the boun-
daries of the selected areas. You can select
the way in which you receive this information
beforehand. Possible options include text
message, e-mail or an automated call. The area can be determined as either a circle
or a polygon with a maximum of ten corners.
You can specify up to ten areas simultane-
ously. Different settings are possible for each
area.
USA only: these settings can be called up
under "Owners Online" at http://
www.mbusa.com.
Alternatively, you can trigger an MB Info call
and inform the customer service representa-
tive that you wish to activate geo fencing.
Currently inactive areas can be activated by
text message.
Triggering the vehicle alarm With this function, you can trigger the vehi-
cle's panic alarm via text message. An alarm
sounds and the exterior lighting flashes.
Depending on the setting, the panic alarm
lasts five or ten seconds. Afterwards, the
alarm switches off.
Garage door opener
General notes
The HomeLink ®
garage door opener integra-
ted in the rear-view mirror allows you to oper-
ate up to three different door and gate sys-
tems.
Use the integrated garage door opener only
on garage doors that: R
have safety stop and reverse features and R
meet current U.S. federal safety standards
Once programed, the integrated garage door
opener in the rear-view mirror will assume the
function of the garage door system's remote
control. Please also read the operating
instructions for the garage door system.
When programming a garage door opener,
park the vehicle outside the garage. Do not
run the engine while programming.
Certain garage door drives are incompatible
with the integrated garage door opener. If you
have difficulty programing the integrated364
Features
Stowage and features

R
solvents R
cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
! Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after clean-
ing. Braking heats the brake discs and the
brake pads/linings, thus drying them. The
vehicle can then be parked.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents rec-
ommended and approved by Mercedes-Benz.
Washing the vehicle and cleaning the
paintwork
Automatic car wash
G WARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored. ! Before driving into an automatic car wash,
make sure that it is suitable for the dimen-
sions of the vehicle. In particular, make
sure that: R
there is enough ground clearance
between the vehicle underbody and the
guide rails of the automatic car wash. R
the clearance width of the automatic car
wash is sufficient, particularly the width
of the guide rails. R
you enter the automatic car wash
straight and in the center of the guide
rails in order to avoid damaging the tires
or wheel rims.
Fold in the exterior mirrors before the vehi-
cle is washed. The exterior mirrors could
otherwise be damaged.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations.
To prevent damage to the vehicle, deacti-
vate DISTRONIC PLUS and the HOLD func-
tion in the following or other similar situa-
tions: R
when towing the vehicle R
in the car wash
! Never clean your vehicle in a Touchless
Automatic Car Wash as these use special
cleaning agents. These cleaning agents can
damage the paintwork or plastic parts.
! Make sure that: R
the side windows and the sliding sunroof
are fully closed. R
the ventilation/heating is switched off
(the OFF button has been pressed). R
the windshield wiper switch is in position
0 .
Otherwise, the vehicle might be damaged.
! In car washes with a towing mechanism,
make sure that the automatic transmission
is in transmission position N , otherwise the
vehicle could be damaged. R
Vehicles with a SmartKey:376
Care
Maintenance and care

Do not remove the SmartKey from the
ignition lock. Do not open the driver's
door or front-passenger door when the
engine is switched off. Otherwise, the
automatic transmission selects park
position P automatically and locks the
wheels. You can prevent this by shifting
the automatic transmission to N before-
hand. R
Vehicles with KEYLESS-GO:
Do not open the driver's door or front-
passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position P
automatically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position N :X
Make sure the vehicle is stationary and the
ignition is switched off. X
Turn the SmartKey to position 2 in the igni-
tion lock ( Y
page 165).
Use the SmartKey instead of the Start/
Stop button on vehicles with KEYLESS-GO. X
Depress and hold the brake pedal. X
Shift the automatic transmission to posi-
tion N .X
Release the brake pedal. X
Release the electric parking brake. X
Switch off the ignition and leave the Smart-
Key in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cl e
aning it in an automatic car wash.
After using an automatic car wash, wipe off
wax from the windshield and the wiper
blades. This will prevent smears and reduce
wiping noises caused by residue on the wind-
shield.
Washing by hand
In some countries, washing by hand is only
allowed at specially equipped washing bays. Observe the legal requirements in all coun-
tries concerned. X
Do not use hot water and do not wash the
vehicle in direct sunlight. X
Use a soft sponge to clean. X
Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz. X
Thoroughly hose down the vehicle with a
gentle jet of water. X
Do not point the water jet directly towards
the air inlets. X
Use plenty of water and rinse out the
sponge frequently. X
Rinse the vehicle with clean water and dry
thoroughly with a chamois. X
Do not let the cleaning agent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers
G WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-
edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Always maintain a distance of at least
11.8 in (30 cm) between the vehicle and the
power washer nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the power washer nozzle around
when cleaning your vehicle.
Do not aim directly at any of the following: R
tires R
door gaps, roof gaps, joints, etc. R
electrical components Care 377
Maintenance and care Z

X
Use clear water and a soft cloth to clean
camera lens C .
Cleaning the exhaust pipe
G WARNING
The exhaust tail pipe and tail pipe trim can
become very hot. If you come into contact
with these parts of the vehicle, you could burn
yourself. There is a risk of injury.
Always be particularly careful around the
exhaust tail pipe and the tail pipe trim. Allow
these components to cool down before touch-
ing them.
Impurities combined with the effects of road
grit and corrosive environmental factors may
cause flash rust to form on the surface. You
can restore the original shine of the exhaust
pipe by cleaning it regularly, especially in win-
ter and after washing. X
Clean the exhaust pipe with a chrome care
product tested and approved by Mercedes-
Benz.
Cleaning the trailer tow hitch
H Environmental note
Dispose of rags soaked in oil and grease in an
environmentally responsible manner.
! Do not clean the ball coupling with a
power washer. Do not use solvents.
! Please note the care instructions in the
trailer coupling manufacturer's operating
instructions. The ball coupling must be cleaned if it
becomes dirty or corroded. X
Remove rust on the ball of the ball coupling,
e.g. with a wire brush. X
Remove dirt with a clean, lint-free cloth or a
brush. X
After cleaning, lightly oil or grease ball cou-
pling C . X
Check that the vehicle's trailer tow hitch is
working properly.
i You can also have the maintenance work
on the ball coupling and the trailer tow hitch
carried out by a qualified specialist work-
shop.
Interior care
Cleaning the display
! For cleaning, do not use any of the fol-
lowing: R
alcohol-based thinner or gasoline R
abrasive cleaning agents R
commercially-available household clean-
ing agents
These may damage the display surface. Do
not put pressure on the display surface
when cleaning. This could lead to irrepara-
ble damage to the display. Care 381
Maintenance and care Z

Useful information ............................ 386
Where will I find...? ........................... 386
Flat tire .............................................. 387
Battery (vehicle) ................................ 391
Jump-starting .................................... 395
Towing and tow-starting .................. 397
Fuses .................................................. 400 385
Breakdown assistance