2014 MERCEDES-BENZ GL brake sensor

Adaptive
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.
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.
Active Driving Assistance package
General notes
The Active Driving Assistance package
consists of DISTRONIC PLUS (Ypage 203),
Active Blind Spot Assist (Ypage 247) and
Active Lane Keeping Assist (Ypage 251).
Active Blind Spot Assist
General notes
Active Blind Spot Assist uses a radar sensor
system to monitor the side areas of your
vehicle which are behind the driver. A warning
display in the exterior mirrors draws your
attention to vehicles detected in the
monitored area. If you then switch on the
corresponding turn signal to change lane, you
will also receive an optical and audible
warning. If a risk of lateral collision is
detected, corrective braking may help you
avoid a collision. Active Blind Spot Assist
evaluates the free space in the direction of
travel and to the side before making a course-
correcting brake application. For this, Active
Blind Spot Assist uses radar sensors which
are pointed in the direction of travel.
Active Blind Spot Assist supports you from a
speed of approximately 20 mph (30 km/h).
Important safety notes
Active Blind Spot Assist is only an aid. It may
fail to detect some vehicles and is no
substitute for attentive driving.
GWARNING
Active Blind Spot Assist does not react to:
Rvehicles overtaken too closely on the side,
placing them in the blind spot area
Rvehicles which approach with a large speed
differential and overtake your vehicle
As a result, Active Blind Spot Assist may
neither give warnings nor intervene in such
situations. There is a risk of an accident.
Always observe the traffic conditions
carefully, and maintain a safe lateral distance.
iUSA only: This device has been approved
by the FCC as a "Vehicular Radar System".
The radar sensor is intended for use in an
automotive radar system only. Removal,
tampering, or altering of the device will void
any warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
iCanada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
Driving systems247
Driving and pa rking
Z

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

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
PRE-SAFEPRE-SAFE
FunctionsFunctions
Currently LimitedCurrently Limited
See Operator'sSee Operator's
ManualManual
Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is temporarily inoperative. Possible causes are:
Rfunction is impaired due to heavy rain or snow.
Rthe sensor in the bumper is 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.
Adaptive Brake Assist 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 bumpers (Ypage 380).
XRestart the engine.
XAMG vehicles: reactivate ESP®(Ypage 73).
298Displaymessages
On-b oard computer and displays

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

Display messagesPossible causes/consequences andPPSolutions
DISTRONIC PLUSDISTRONIC PLUS
CurrentlyCurrently
Unavailable SeeUnavailable See
Operator's ManualOperator's Manual
DISTRONIC PLUS 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.
Rthe system is outside the operating temperature range.
Rthe on-board voltage is too low.
A warning tone also sounds.
When the causes stated above no longer apply, the display
message disappears.
DISTRONIC 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.
DISTRONIC PLUSDISTRONIC PLUS
InoperativeInoperative
DISTRONIC PLUS is defective.
BAS PLUS (Brake Assist PLUS) and PRE-SAFE®Brake may be
inoperative as well.
A warning tone also sounds.
XVisit a qualified specialist workshop.
DISTRONIC PLUSDISTRONIC PLUS
PassivePassive
You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
XRemove your foot from the accelerator pedal.
DISTRONIC PLUSDISTRONIC PLUS
- - - mph- - - mph
An activation condition for DISTRONIC PLUS is not fulfilled.
XCheck the activation conditions for DISTRONIC PLUS
(Ypage 203).
316Displaymessages
On-b oard computer and displays

Display messagesPossible causes/consequences andPPSolutions
Tire Press.MonitorTire Press.Monitor
CurrentlyCurrently
UnavailableUnavailable
Due to a source of radio interference, no signals can be received
from the wheel sensors. The tire pressure monitor is temporarily
malfunctioning.
XDrive on.
The tire pressure monitor restarts automatically as soon as the
problem has been solved.
TirePress.TirePress.
Sensor(s) MissingSensor(s) Missing
There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire is not displayed in the
multifunction display.
XHave the faulty tire pressure sensor replaced at a qualified
specialist workshop.
Tire PressureTire Pressure
MonitorMonitor
Inoperative NoInoperative No
Wheel SensorsWheel Sensors
The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
XMount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving
for a few minutes.
TireTirePress.Press.MonitorMonitor
InoperativeInoperative
The tire pressure monitor is faulty.
XVisit a qualified specialist workshop.
Vehicle
Display messagesPossible causes/consequences andPPSolutions
Shift to 'P' orShift to 'P' or
'N''N'totoStartStartEngineEngine
You have attempted to start the engine with the transmission in
positionRorD.
XShift the transmission to positionPorN.
Auxiliary BatteryAuxiliary Battery
MalfunctionMalfunction
The auxiliary battery for the automatic transmission is no longer
being charged.
XVisit a qualified specialist workshop at the next opportunity.
XUntil then, set the automatic transmission to positionPbefore
you switch off the engine.
XBefore leaving the vehicle, apply the electric parking brake.
XSecure the vehicle against rolling away (Ypage 188).
Apply Brake toApply Brake to
Shift from 'P'Shift from 'P'
You have attempted to move the transmission selector lever to
positionD,RorNwithout depressing the brake pedal.
XDepress the brake pedal.
320Displaymessages
On-b oard computer and displays