lights MERCEDES-BENZ GL 2014 Service Manual

of the towing vehicle, as the latter is
equipped with an anti-lock brake system.
Doing so will result in a loss of function of
the brake systems of both the vehicle and
the trailer.
XMake sure that the automatic transmission
is set to positionP.
XApply the vehicle's electric parking brake.
XStart the engine.
XVehicles with the AIRMATIC package:
select highway level.
XVehicles with ADS:set ADS toAUTOor
COMF.
XSwitch off the engine.
XClose all doors and the tailgate.
XCouple up the trailer.
XEstablish all electrical connections.
XCheck that the trailer lighting system is
working.
iVehicles with the AIRMATIC package:
with a trailer attached, the vehicle will
always remain at highway level. When
coupling up a trailer, please observe the
following:
RUnless highway level has been set
manually, the vehicle is automatically
lowered to highway level. This is the case
if a speed of 5 mph(8km/h) is reached.
RHigh-speed level is not available.
These restrictions apply to all accessories
powered through a connection to the trailer
power socket of your vehicle, e.g. a bicycle
carrier.
Observe the maximum permissible trailer
dimensions (width and length).
Most U.S. states and all Canadian provinces
require by law:
RSafety chains between the towing vehicle
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer
coupling, not to the bumper or the axle.
Leave enough play in the chains to make
tight cornering possible.
RA separate brake system for certain types
of trailer.
RA safety switch for braked trailers. Check
the specific legal requirements applicable
to your state.
If the trailer detaches from the towing
vehicle, the safety switch applies the
trailer's brakes.
Towing a trailer
There are numerous legal requirements
concerning the towing of a trailer, e.g. speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of
residence but also at any location to which
you are traveling. The police and local
authorities can provide reliable information.
Please observe the following when towing a
trailer:
RIn order to accumulate driving experience
and accustom yourself to the new handling
characteristics, practice the following at a
location where there is no traffic:
-Cornering
-Stopping
-Backing up
RBefore driving, check:
-the trailer tow hitch
-the safety switch for braked trailers
-the safety chains
-electrical connections
-the lights
-the wheels
RAdjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
RIf the trailer has electronically controlled
brakes, pull away carefully. Brake manually
using the brake controller and check
whether the brakes function correctly.
Towing a trailer267
Driving an d parking
Z

The selected unit of measurement for
distance applies to:
RDigital speedometer in theTripTripmenu
ROdometer and the trip odometer
RTrip computer
RCurrent consumption and the range
RNavigation instructions in theNaviNavimenu
RCruise control
RDISTRONIC PLUS
RASSYST PLUS service interval display
Selecting the permanent display function
You can determine whether the multifunction
display permanently shows your speed or the
outside temperature.
XPress theYorebutton on the
steering wheel to select theSettSettmenu.
XPress thedorcbutton to select the
Instrument ClusterInstrument Clustersubmenu.
XPressvto confirm.
XPress thedorcbutton to select the
Permanent Display:Permanent Display:function.
You will see the selected settingOutsideOutside
TemperatureTemperatureorAdditionalAdditional
Speedometer [km/h]Speedometer [km/h](USA)/
Additional Speedometer [mph]Additional Speedometer [mph]
(Canada).
XPress thevbutton to save the setting.
iThe speed is shown in km/h (USA)/mph
(Canada).
Light submenu
Setting the daytime running lamps
iThis function is not available in Canada.
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPress thedorcbutton to select the
LightLightsubmenu.
XPressvto confirm.
XPressdorcto select theDaytimeDaytime
Running LightsRunning Lightsfunction.
If theDaytime Running LightsDaytime Running Lightsfunction
has been switched on, the cone of light and
the

Surround lighting and exterior lighting
delayed switch-off
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPress thedorcbutton to select the
LightsLightssubmenu.
XPressvto confirm.
XPressdorcto select the
Surround LightingSurround Lightingfunction.
When theSurround LightingSurround Lightingfunction is
activated, the light cone and the area
around the vehicle are displayed in orange
in the multifunction display.
XPress thevbutton to save the setting.
Deactivating delayed switch-off of the
exterior lighting temporarily:
XBefore leaving the vehicle, turn the
SmartKey to position0in the ignition lock.
XTurn the SmartKey to position2in the
ignition lock.
The exterior lighting delayed switch-off is
deactivated.
Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
If you have activated theSurroundSurround
LightingLightingfunction and the light switch is set
toX, the following functions are activated
when it is dark:
Rsurround lighting:the exterior lighting
remains lit for 40 seconds after unlocking
with the SmartKey. If you start the engine,
the surround lighting is switched off and
automatic headlamp mode is activated
(Ypage 128).
Rexterior lighting delayed switch-off:the
exterior lighting remains lit for
60 seconds after the engine is switched off.
If you close all the doors and the tailgate,
the exterior lighting goes off after
5 seconds.
iDepending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the
following light up:
RParking lamps
RDaytime running lamps
RSide marker lamps
RSurround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayed switch-off
If you activate theInterior LightingInterior Lighting
DelayDelayfunction, the interior lighting remains
on for 20 seconds after you remove the
SmartKey from the ignition lock.
XPress theYorebutton on the
steering wheel to select theSettSettmenu.
XPress thedorcbutton to select the
LightLightsubmenu.
XPressvto confirm.
XPress thedorcbutton to select the
Interior Lighting DelayfInterior Lighting Delayffunction.
If theInteriorInteriorLightingLightingDelayDelayfunction
has been switched on, the vehicle interior
is displayed in orange in the multifunction
display.
XPress thevbutton to save the setting.
Vehicle submenu
Activating/deactivating the automatic
door locking mechanism
If you activate theAutomatic Door LockAutomatic Door Lock
function, the vehicle is centrally locked above
a speed of approximately 9 mph (15 km/h).
XPress theYorebutton on the
steering wheel to select theSettSettmenu.
XPress thedorcbutton to select the
VehicleVehiclesubmenu.
XPressvto confirm.
XPress thedorcbutton to select the
Automatic Door LockAutomatic Door Lockfunction.
When theAutomaticAutomaticDoorDoorLockLockfunction
is activated, the vehicle doors are displayed
in orange in the multifunction display.
XPress thevbutton to save the setting.
284Menus and submenus
On-board computer and displays

For further information on the automatic
locking feature, see (Ypage 88).
Activating/deactivating the acoustic
locking verification signal
If you switch on theAcousticAcousticLockLockfunction,
an acoustic signal sounds when you lock the
vehicle.
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPressdorcto select theVehicleVehicle
submenu.
XPressvto confirm.
XPress thedorcbutton to select the
Acoustic LockAcoustic Lockfunction.
If theAcousticAcousticLockLockfunction is activated,
the7symbol in the multifunction
display lights up orange.
XPress thevbutton to save the setting.
Activating/deactivating the radar sensor
system
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPressdorcto select theVehicleVehicle
submenu.
XPressvto confirm.
XPress thecordbutton to select
Radar Sensor (See Oper. Manual):Radar Sensor (See Oper. Manual):.
You will see the selected setting:EnabledEnabled
orDisabledDisabled.
XPress thevbutton to save the setting.
The following systems are switched off when
the radar sensor system is deactivated:
RDISTRONIC PLUS (Ypage 203)
RBAS PLUS (Ypage 68)
RPRE-SAFE®Brake (Ypage 75)
RBlind Spot Assist (Ypage 243)
RActive Blind Spot Assist (Ypage 247)
Convenience submenu
Activating/deactivating the EASY-
ENTRY/EXIT feature
GWARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is
making adjustments, make sure that no one
has any body parts in the sweep of the
steering wheel.
If somebody becomes trapped:
Rpress one of the memory function position
buttons, or
Rmove the switch for steering wheel
adjustment in the opposite direction to that
in which the steering wheel is moving.
The adjustment process is stopped.
XPress theYorebutton on the
steering wheel to select theSettSettmenu.
XPress thedorcbutton to select the
ConvenienceConveniencesubmenu.
XPressvto confirm.
XPress thedorcbutton to select the
Easy Entry/Exit:Easy Entry/Exit:function.
If theEasy Entry/ExitEasy Entry/Exitfunction is
activated, the vehicle steering wheel is
displayed in orange in the multifunction
display.
XPress thevbutton to save the setting.
Further information on the EASY-ENTRY/EXIT
feature (Ypage 121).
Switching the belt adjustment on/off
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPress thedorcbutton to select the
ConvenienceConveniencesubmenu.
XPressvto confirm.
Menus and submenus285
On-board computer and displays
Z

XPress thedorcbutton to select the
Belt AdjustmentBelt Adjustmentfunction.
If theBelt AdjustmentBelt Adjustmentfunction is
activated, the vehicle seat belt is shown in
orange in the multifunction display.
XPress thevbutton to save the setting.
For further information on belt adjustment,
see (Ypage 57).
Switching the fold-in mirrors with the
locking feature on/off
This function is only available on vehicles with
the memory function (Ypage 125).
When you activate theAuto. MirrorAuto. Mirror
FoldingFoldingfunction, the exterior mirrors are
folded in when the vehicle is locked. If you
unlock the vehicle and then open a door, the
exterior mirrors fold out again.
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPress thedorcbutton to select the
ConvenienceConveniencesubmenu.
XPressvto confirm.
XPressdorcto select theAuto.Auto.
Mirror FoldingMirror Foldingfunction.
If theAuto. Mirror FoldingAuto. Mirror Foldingfunction is
activated, the vehicle's exterior mirror is
displayed in orange in the multifunction
display.
XPress thevbutton to save the setting.
CTo fold the exterior mirrors in or out
If you have switched theAuto. MirrorAuto. Mirror
FoldingFoldingon and you fold the exterior mirrors
in using buttonC, they will not fold out
automatically (Ypage 123).
You can then only fold out the exterior mirrors
using buttonC.
Restoring the factory settings
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPress thedorcbutton to select the
Factory SettingFactory Settingsubmenu.
XPressvto confirm.
TheReset All Settings?Reset All Settings?message
appears.
XPress thedorcbutton to select
NoNoorYesYes.
XPressvto confirm the selection.
If you selectYesYes, the multifunction display
shows a confirmation message.
For safety reasons, theDaytime RunningDaytime Running
LightsLightsfunction in theLightsLightssubmenu is
only reset if the vehicle is stationary.
ON&OFFROAD menu
Example: multifunction display
XPress theYorebutton on the
steering wheel to select theON&OFFROADON&OFFROAD
menu.
You can set the current settings to appear in
theON&OFFROADON&OFFROADmenu:
ROn-road program (Ypage 253)
ROff-road program (Ypage 258)
286Menus and submenus
On-board computer and displays

Display messagesPossible causes/consequences andPPSolutions
I(USA
only)$(Canada
only)
Please ReleasePlease Release
Parking BrakeParking Brake
The redI(USA only)/$(Canada only) indicator lamp
flashes and a warning tone sounds. A condition for automatic
release of the electric parking brake is not fulfilled (Ypage 189).
You are driving with the electric parking brake applied.
XRelease the electric parking brake manually.
The redI(USA only)/$(Canada only) indicator lamp
flashes and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Ypage 189).
I(USA
only)$(Canada
only)
Parking Brake SeeParking Brake See
Operator's ManualOperator's Manual
The yellow$warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
XSwitch the ignition off.
XPress the electric parking brake handle for at least ten seconds.
XShift the transmission toP.
XConsult a qualified specialist workshop.
The yellow$warning lamp and the redI(USA
only)/$(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
or
XRelease the electric parking brake automatically (Ypage 189).
If the electric parking brake still cannot be released:
XDo not drive on.
XConsult a qualified specialist workshop.
294Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
The redI(USA only)/$(Canada only) indicator lamp
flashes and the yellow$warning lamp lights up.
The electric parking brake is malfunctioning.
To release:
XSwitch off the ignition and turn it back on.
XRelease the electric parking brake manually.
To apply:
XSwitch off the ignition and turn it back on.
XApply the electric parking brake manually.
If the redI(USA only)/$(Canada only) indicator lamp
continues to flash:
XDo not drive on.
XSecure the vehicle against rolling away (Ypage 428).
XShift the transmission toP.
XTurn the front wheels towards the curb.
XConsult a qualified specialist workshop.
The yellow$warning lamp lights up. The redI(USA
only)/$(Canada only) 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.
XSwitch off the ignition and turn it back on.
XApply the electric parking brake.
If it is not possible to engage the electric parking brake:
XShift the transmission toP.
XVisit a qualified specialist workshop.
If it is not possible to release the electric parking brake:
XRelease the electric parking brake automatically (Ypage 189).
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
Displaymessages295
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
The yellow$warning lamp lights up. If you manually apply or
release the electric parking brake, the redI(USA
only)/$(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible to
apply the electric parking brake manually.
XShift the transmission toP.
XVisit a qualified specialist workshop.
I(USA
only)$(Canada
only)
Parking BrakeParking Brake
InoperativeInoperative
The yellow$warning lamp lights up. The redI(USA
only)/$(Canada only) indicator lamp flashes for about ten
seconds after the electric parking brake has been applied or
released. It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of
overvoltage or undervoltage.
XRemove the cause for the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
XEngage or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
XSwitch off the ignition and turn it back on.
XEngage or release the electric parking brake.
If the electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
The yellow$warning lamp lights up and the redI(USA
only)/$(Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
XShift the transmission toP.
XVisit a qualified specialist workshop.
I(USA
only)$(Canada
only)
Turn On theTurn On the
Ignition toIgnition to
Release theRelease the
Parking BrakeParking Brake
The redI(USA only)/$(Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the
ignition was switched off.
XSmartKey:turn the SmartKey to position1in the ignition lock.
XKEYLESS-GO:switch on the ignition.
296Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
'(USA
only)M(Canada
only)
Check Brake FluidCheck Brake Fluid
LevelLevel
There is not enough brake fluid in the brake fluid reservoir. In
addition, the'(USA only)/M(Canada only) warning lamp
lights up in the instrument cluster and a warning tone sounds.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 188).
XConsult a qualified specialist workshop.
XDo not add brake fluid. This does not correct the malfunction.
&
Check Brake PadCheck Brake Pad
WearWear
The brake pads/linings have reached their wear limit.
XVisit a qualified specialist workshop.
S
mbrace Inoperativembrace Inoperative
USA only: one or more of the main functions in the mbrace system
are malfunctioning.
Canada only: one or more of the main functions of the TELEAID
system are malfunctioning.
XUSA only: have the mbrace system checked at a qualified
specialist workshop.
XCanada only: have the TELEAID system checked at a qualified
specialist workshop.
PRE-SAFEPRE-SAFE
Inoperative SeeInoperative See
Operator's ManualOperator's Manual
Important functions of PRE-SAFE®have failed. All other occupant
safety systems, e.g. air bags, remain available.
XVisit a qualified specialist workshop immediately.
Displaymessages297
On-b oard computer and displays
Z

Display messagesPossible causes/consequences andPPSolutions
PRE-SAFEPRE-SAFE
FunctionsFunctions
Currently LimitedCurrently Limited
See Operator'sSee Operator's
ManualManual
Vehicles with the Active Driving Assistance package:
PRE-SAFE®Brake is temporarily inoperative. Possible causes are:
Rfunction is impaired due to heavy rain or snow.
Rthe sensors in the radiator grill and the bumper are dirty.
Rthe 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.
RAMG vehicles: ESP®is deactivated.
Rthe system is outside the operating temperature range.
Rthe on-board voltage is too low.
When the causes stated above no longer apply, the display
message disappears.
PRE-SAFE®Brake is operational again.
If the display message does not disappear:
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 188).
XClean the sensors in the radiator grill and the bumper
(Ypage 380).
XRestart the engine.
XAMG vehicles: reactivate ESP®(Ypage 73).
PRE-SAFEPRE-SAFE
FunctionsFunctions
Currently LimitedCurrently Limited
See Operator'sSee Operator's
ManualManual
Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is faulty. The distance warning function may also have
failed.
Vehicles with the Active Driving Assistance package:
PRE-SAFE®Brake is faulty. BAS PLUS or the distance warning
function may also have failed.
XVisit a qualified specialist workshop.
u
SRS MalfunctionSRS Malfunction
Service RequiredService Required
There is a malfunction in the SRS (Supplemental Restraint
System).
Theuwarning lamp also lights up in the instrument cluster.
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XVisit a qualified specialist workshop.
Further information on occupant safety (Ypage 43).
Displaymessages299
On-b oard computer and displays
Z