2014 MERCEDES-BENZ GL warning

1. This device may not cause harmful
interference, and
2. this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. 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.
Radar sensors
The Active Blind Spot Assist radar sensors are
integrated into the front and rear bumpers
and behind a cover in the radiator grill. Make
sure that the bumpers and the cover in the
radiator grill are free of dirt, ice or slush. The
rear sensors must not be covered, e.g. by
bicycle racks or overhanging loads. Following
a severe impact or in the event of damage to
the bumpers, have the function of the radar
sensors checked at a qualified specialist
workshop. Active Blind Spot Assist may
otherwise no longer work properly.
Monitoring area
GWARNING
Active Blind Spot Assist does not detect all
traffic situations and road users. There is a
risk of an accident.
Always make sure that there is sufficient
distance on the side for other traffic or
obstacles.
Active Blind Spot Assist monitors the area up
to 10 ft (3.0 m) behind your vehicle and
directly next to your vehicle, as shown in the
diagram. For this purpose, Active Blind Spot
Assist uses radar sensors in the rear bumper.
In particular, the detection of obstacles can
be impaired if:
Rdirt on the sensors or anything else
covering the sensors
Rpoor visibility, e.g. due to fog, heavy rain,
snow or spray
Vehicles in the monitoring range are then not
indicated.
Active Blind Spot Assist may not detect
narrow vehicles, such as motorcycles or
bicycles, or may only detect them too late.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may
be the case if there are vehicles at the inner
edge of your lane.
Due to the nature of the system:
Rwarnings may be issued in error when
driving close to crash barriers or similar
solid lane borders.
Rwarnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
248Driving systems
Driving and parking

Indicator and warning display
CYellow indicator lamp/red warning lamp
Active Blind Spot Assist is not active at
speeds below approximately 20 mph
(30 km/h). Vehicles in the monitoring range
are then not indicated.
When Active Blind Spot Assist is activated,
indicator lampCin the exterior mirrors lights
up yellow at speeds of up to 20 mph
(30 km/h). At speeds above 20 mph
(30 km/h), the indicator lamp goes out and
Active Blind Spot Assist is operational.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lampCon the
corresponding side lights up red. This warning
is always emitted when a vehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake a vehicle,
the warning only occurs if the difference in
speed is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Active Blind
Spot Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
Visual and acoustic collision warning
If you switch on the turn signals to change
lanes and a vehicle is detected in the side
monitoring range, you receive a visual and
acoustic collision warning. You then hear a
double warning tone and red warning
lampCflashes. If the turn signal remains on,
detected vehicles are indicated by the
flashing of red warning lampC. There are no
further warning tones.
Course-correcting brake application
If Active Blind Spot Assist detects a risk of a
lateral collision in the monitoring range, a
course-correcting brake application is carried
out. This is meant to assist you in avoiding a
collision.
GWARNING
A course-correcting brake application cannot
always prevent a collision. There is a risk of
an accident.
Always steer, brake or accelerate yourself,
especially if Active Blind Spot Assist warns
you or makes a course-correcting brake
application. Always maintain a safe distance
at the sides.
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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

Active Lane Keeping Assist
General notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of
cameraCat the top of the windshield. Active
Lane Keeping Assist detects lane markings on
the road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, a lane-correcting application of the
brakes can bring the vehicle back into the
original lane.
If you selectkmkmin theDisplay UnitDisplay Unit
Speed-/Odometer:Speed-/Odometer:function on the on-board
computer (Ypage 282), Active Lane Keeping
Assist is activated starting at a speed of
60 km/h. If themilesmilesdisplay unit is selected,
the assistance range begins at 40 mph.
Important safety notes
If you fail to adapt your driving style, Active
Lane Keeping Assist can neither reduce the
risk of accident nor override the laws of
physics. Lane Keeping Assist cannot take into
account the road, traffic and weather
conditions. Lane Keeping Assist is merely an
aid. You are responsible for the distance to
the vehicle in front, for vehicle speed, for
braking in good time and for staying in your
lane.
Active Lane Keeping Assist cannot
continuously keep your vehicle in its lane.
GWARNING
Active Lane Keeping Assist cannot always
clearly detect lane markings.
In such cases, Active Lane Keeping Assist
can:
Rgive an unnecessary warning and then
make a course-correcting brake application
to the vehicle
Rnot give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Active Lane Keeping Assist alerts you.
Terminate the intervention in a non-critical
driving situation.
The system may be impaired or may not
function if:
Rthere is poor visibility, e.g. due to
insufficient illumination of the road, or due
to snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
Rthe windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
Rthere are no, several or unclear lane
markings for a lane, e.g. in areas with road
construction work
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
Rthe road is narrow and winding
Rthere are highly variable shade conditions
on the roadway
Rno vehicle is detected in the adjacent lane
and there are broken lane markings
Warning vibration in the steering wheel
A warning may be given if a front wheel
passes over a lane marking. It will warn you
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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.
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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

Messages in the multifunction display
If a gear change process has not been successful, the following messages may be displayed
in the multifunction display:
Display messagesPossible causes/consequences andPPSolutions
LOW RANGE Max.LOW RANGE Max.
Speed 40 km/hSpeed 40 km/h
You have been driving faster than 40 km/h. Additionally, the
indicator lamp on the button in the center console blinks.
XDrive more slowly to carry out the gear change process.
LOWLOWRANGERANGEShiftShifttoto
Position N BrieflyPosition N Briefly
The transmission is in positionDand you are driving at below
40 km/h.
XShift the transmission toNto complete the gear change
process.
LOWLOWRANGERANGEShiftingShifting
Canceled PleaseCanceled Please
ReactivateReactivate
The gear change process was not carried out.
XEnsure that all gear change conditions are fulfilled and carry out
the gear change process again.
LOW RANGE StopLOW RANGE Stop
ApplyApplyParkingParkingBrakeBrake
A warning tone also sounds. The gear change process has not been
completed. LOW RANGE is in the neutral position. There is no
connection between the engine and the drive wheels.
!Do not drive any further. You could otherwise damage the
vehicle's drive train.
XStop the vehicle. Take into account the road and traffic
conditions when doing this.
XDepress the electric parking brake (Ypage 189).
XCarry out the gear change process again.
If the gear change process has been carried out, theLOWLOWRANGERANGE
Stop Apply Parking BrakeStop Apply Parking Brakemessage disappears.
ON&OFFROAD menu in the COMAND
display (vehicles with the
ON&OFFROAD package)
You can display some driving systems, driving
programs and additional information in the
COMAND display.
XMake sure that the SmartKey is in position
2in the ignition lock.
XMake sure that COMAND is activated, see
the separate COMAND operating
instructions.
XPress function buttonC.
The corresponding displays appear in the
COMAND display:
Rlevel control
Rsteering angle
Rvehicle's angle of inclination
262Driving systems
Driving and parking