warning light MERCEDES-BENZ GL 2014 Workshop Manual

If a course-correcting brake application
occurs, red warning lampCflashes in the
exterior mirror and a dual warning tone
sounds. In addition, displayDunderlining
the danger of a side collision appears in the
multifunction display.
In very rare cases, the system may make an
inappropriate brake application. A course-
correcting brake application may be
interrupted at any time if you steer slightly in
the opposite direction or accelerate.
The course-correcting brake application is
available in the speed range between
20 mph (30 km/h) and 120 mph (200 km/h).
Either no braking application, or a course-
correcting brake application adapted to the
driving situation occurs if:
Rthere are vehicles or obstacles, e.g. crash
barriers, located on both sides of your
vehicle.
Ra vehicle approaches you too closely at the
side.
Ryou have adopted a sporty driving style with
high cornering speeds.
Ryou clearly brake or accelerate.
Ra driving safety system intervenes, e.g.
ESP®or PRE-SAFE®Brake.
RESP®is switched off.
Rthe off-road program is activated (vehicles
without the ON&OFFROAD package).
Roff-road program 1 or 2 is activated
(vehicles with the ON&OFFROAD package).
Rthe LOW RANGE off-road gear is activated
(vehicles with the ON&OFFROAD package).
Ra loss of tire pressure or a defective tire is
detected.
Switching on Active Blind Spot Assist
XMake sure that the radar sensor system
(Ypage 285) and Active Blind Spot Assist
(Ypage 281) are activated in the on-board
computer.
XTurn the SmartKey to position2in the
ignition lock.
Warning lampsCin the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Towing a trailer
When you attach a trailer, make sure you have
correctly established the electrical
connection. This can be accomplished by
checking the trailer lighting. Active Blind Spot
Assist is then deactivated. The indicator lamp
lights up yellow in the exterior mirrors and the
Active Blind Spot Assist CurrentlyActive Blind Spot Assist Currently
Unavailable See Operator's ManualUnavailable See Operator's Manual
message appears in the multifunction
display.
250Driving systems
Driving and parking

by means of intermittent vibration in the
steering wheel for up to 1.5 seconds.
In order that you are warned only when
necessary and in good time if you cross the
lane marking, the system recognizes certain
conditions and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a
highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
Lane-correcting brake application
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original
lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake
application.
GWARNING
Active Lane Keeping Assist does not detect
traffic conditions or road users. In very rare
cases, the system may make an inappropriate
brake application, e.g. after intentionally
driving over a solid lane marking. There is a
risk of an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
there is sufficient distance on the side for
other traffic or obstacles.
If a lane-correcting brake application occurs,
displayCappears in the multifunction
display.
If you leave your lane, under certain
circumstances the vehicle will brake briefly
on one side. This is meant to assist you in
bringing the vehicle back to the original lane.
This function is available in the range between
40 mph and 120 mph (60 km/h and
200 km/h).
A lane-correcting brake application can only
be made after driving over a solid,
recognizable lane marking. Before this, a
warning must be given by means of
intermittent vibration in the steering wheel.
In addition, a lane with lane markings on both
sides must be recognized. The brake
application also slightly reduces vehicle
speed.
iA further lane-correcting brake
application can only occur after your
vehicle has returned to the original lane.
No lane-correcting brake application occurs
if:
Ryou clearly and actively steer, brake or
accelerate.
Ryou cut the corner on a sharp bend.
Ryou have switched on the turn signal.
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Ryou have adopted a sporty driving style with
high cornering speeds or high rates of
acceleration.
252Driving systems
Driving and parking

RESP®is switched off.
Rthe transmission is not in positionD.
Ron vehicles with a trailer tow hitch, the
electrical connection to the trailer has been
correctly established.
Rthe off-road program is activated (vehicles
without the ON&OFFROAD package).
Roff-road program 1 or 2 is activated
(vehicles with the ON&OFFROAD package).
Rthe LOW RANGE off-road gear is activated
(vehicles with the ON&OFFROAD package).
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Active Lane Keeping Assist does not detect
traffic situations or road users. An
inappropriate brake application may be
interrupted at any time if you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Rclearly brake or accelerate
A lane-correcting brake application is
interrupted automatically if:
Ra driving safety system intervenes, e.g.
ESP®, PRE-SAFE®Brake or Active Blind
Spot Assist.
Rlane markings can no longer be recognized.
Switching on Active Lane Keeping Assist
XSwitch on Active Lane Keeping Assist using
the on-board computer; to do so, select
StandardStandardorAdaptiveAdaptive(Ypage 282).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(Ypage 280) are shown in green. Lane
Keeping Assist is ready for use.
WhenStandardStandardis selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, such
as ABS, BAS or ESP®.
WhenAdaptiveAdaptiveis selected, no warning
vibration occurs if:
Ryou switch on the turn signals. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid
an obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
Towing a trailer
When you attach a trailer, make sure you have
correctly established the electrical
connection. This can be accomplished by
checking the trailer lighting.
On-road programs (vehicles with the
ON&OFFROAD package)
General notes
The on-road programs assist you during on-
road driving and the off-road programs when
driving off-road (Ypage 258).
The following program messages remain in
the multifunction display until the
corresponding vehicle level has been set. Up
to off-road level 2, you can hide the program
messages using the8orvbutton on
the multifunction steering wheel.
Driving systems253
Driving an d parking
Z

surface and tire conditions. Select a set
speed suitable for the prevailing conditions
and when necessary, apply the brakes
manually.
GWARNING
If the speed driven and the set speed deviate
and you activate DSR on a slippery road
surface, the wheels may lose traction. If the
wheels lose traction. the vehicle can no longer
be steered. There is an increased danger of
skidding and accidents.
Never activate DSR on slippery road surfaces.
Activating DSR
GWARNING
If you drive faster than the set speed and
activate DSR, the vehicle will decelerate on
downhill gradients. If you do not know the set
speed, the vehicle could decelerate
unexpectedly. There is a risk of an accident.
Decelerate the vehicle to the set speed before
activating DSR. If you do not know what the
stored set speed is, store the desired set
speed again.
Example: vehicles with the ON&OFFROAD package
CDSR button
DDSR indicator lamp
XPress buttonC.
Indicator lampDlights up.
The

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
iRead the information on qualified
specialist workshops: (Ypage 28).
Important safety notes
GWARNING
If you operate information systems and
communication equipment integrated in the
vehicle while driving, you will be distracted
from traffic conditions. You could also lose
control of the vehicle. There is a risk of an
accident.
Only operate the 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
equipment when the vehicle is stationary.
GWARNING
If the instrument cluster has failed or
malfunctioned, you may not recognize
function restrictions in systems relevant to
safety. The operating safety of your vehicle
may be impaired. There is a risk of an
accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop
immediately.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
The on-board computer only shows messages
or warnings from certain systems in the
multifunction display. You should therefore
make sure your vehicle is operating safely at
all times. Otherwise, a vehicle that is not
operating safely may cause an accident.
For an overview, see the instrument panel
illustration (Ypage 33).
Displays and operation
Instrument cluster lighting
The lighting in the instrument cluster, in the
displays and the controls in the vehicle
interior can be adjusted using the brightness
control knob.
The brightness control knob is located on the
bottom left of the instrument cluster
(Ypage 33).
XTurn the brightness control knob clockwise
or counter-clockwise.
If the light switch is set toX,`or
X, the brightness is dependent upon
the brightness of the ambient light.
iThe light sensor in the instrument cluster
automatically controls the brightness of
the multifunction display.
In daylight, the displays in the instrument
cluster are not illuminated.
Coolant temperature display
GWARNING
Opening the hood when the engine is
overheated 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.
!A display message is shown if the coolant
temperature is too high.
272Displays and operation
On-board computer and displays

Activating/deactivating Lane Keeping
Assist
XPressYoreon the steering wheel
to select theDriveAssistDriveAssistmenu.
XPresscordto selectLaneLane
Keeping AssistKeeping Assist.
XPress thevbutton.
The current selection is displayed.
XPressvto confirm.
XPress thedorcbutton to setOffOff,
StandardStandardorAdaptiveAdaptive.
When Lane Keeping Assist or Active Lane
Keeping Assist is activated, the
multifunction display shows the lane
markings as bright lines in the assistance
graphic.
XPress thevbutton to save the setting.
For further information about Lane Keeping
Assist, see (Ypage 245).
For further information about Active Lane
Keeping Assist, see (Ypage 251).
Maintenance menu
In theServServmenu, you have the following
options:
RCalling up display messages in message
memory (Ypage 290)
RRestarting the tire pressure loss warning
system (Ypage 412)
RChecking the tire pressure electronically
(Ypage 412)
RCalling up the service due date
(Ypage 375)
Settings menu
Introduction
In theSett.Sett.menu, you have the following
options:
RChanging the instrument cluster settings
(Ypage 282)
RChanging the light settings (Ypage 283)
RChanging the vehicle settings
(Ypage 284)
RChanging the convenience settings
(Ypage 285)
RRestoring the factory settings
(Ypage 286)
Instrument cluster submenu
Selecting the unit of measurement for
distance
TheDisplay Unit Speed-/Odometer:Display Unit Speed-/Odometer:
function allows you to choose whether
certain displays appear in kilometers or miles
in the multifunction display.
You can determine whether the multifunction
display shows some messages in miles or
kilometers.
XPress theYorebutton on the
steering wheel to select theSett.Sett.menu.
XPress thedorcbutton to select the
Instrument ClusterInstrument Clustersubmenu.
XPressvto confirm.
XPress thedorcbutton to select the
Display Unit Speed-/Odometer:Display Unit Speed-/Odometer:
function.
You will see the selected setting:kmkmor
milesmiles.
XPress thevbutton to save the setting.
282Menus and submenus
On-b oard 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

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