2015 MERCEDES-BENZ GL-Class Engine

Activating ATTENTION ASSIST
X
Activate ATTENTION ASSIST using the on-
board computer (Y page 284).
When ATTENTION ASSIST is deactivated, the 00D7 symbol appears in the multifunction
display in the assistance graphic display.
ATTENTION ASSIST is activated automatically
after the engine is started up.
Warning and display messages in the
multifunction display If fatigue or increasing lapses in concentra-
tion are detected, a warning appears in the
multifunction display: Attention Assist: Attention Assist:
Take a Break!
Take a Break!
In addition to the message shown in the mul-
tifunction display, you will then hear a warn-
ing tone.
X If necessary, take a break.
X Confirm the message by pressing the 0076
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. The precon-
dition for this is that ATTENTION ASSIST still
detects typical indicators of fatigue or
increasing lapses in concentration. Night View Assist Plus
General notes In addition to the illumination provided by the
normal headlamps, Night View Assist Plus
uses infrared light to illuminate the road.
Night View Assist Plus camera 0043picks up the
infrared light and displays a monochrome
image in COMAND. The image displayed in
COMAND corresponds to a road lit up by high- beam headlamps. This enables you to see the
road's course and any obstacles in good time. If pedestrian recognition is activated, pedes-
trians recognized by the system are highligh-
ted in the Night View Assist Plus display.
Light from the headlamps of oncoming vehi-
cles does not affect the Night View Assist Plus
display in the multifunction display. This is
also the case if you cannot switch on the high-
beam headlamps due to oncoming traffic.
i Infrared light is not visible to the human
eye and therefore does not glare. Night
View Assist Plus can therefore remain
switched on even if there is oncoming traf- fic.
Important safety notes Night View Assist Plus is only an aid and is not
a substitute for attentive driving. Do not rely
on the Night View Assist Plus display. You are responsible for the distance to the vehicle in
front, for vehicle speed and for braking in
good time. Drive carefully and always adapt
your driving style to suit the prevailing road
and traffic conditions.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to snow,
rain, fog or spray
R the windshield is dirty, fogged up or cov-
ered, for instance by a sticker, in the vicinity
of the camera
R on bends, on uphill gradients or downhill
gradients 242
Driving systemsDriving and pa
rking

sponding 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, Blind Spot
Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds. Red warning lamp 0043flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp 0043. There are no further warning tones.
Switching on Blind Spot Assist
X Make sure that the radar sensor system
(Y page 287) and Blind Spot Assist
(Y page 284) are activated in the on-board
computer.
X Turn the SmartKey to position 2in the igni-
tion lock.
Warning lamps 0043in 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 connec-
tion. This can be accomplished by checking
the trailer lighting. In this event, Blind Spot
Assist is deactivated. The indicator lamp in
the exterior mirrors lights up yellow, and the
Blind
Blind Spot SpotAssist
Assist Currently
Currently Unavail‐
Unavail‐
able See Operator's Manual
able See Operator's Manual message
appears in the multifunction display.
i You can deactivate the indicator lamps in
the exterior mirrors. To do so, switch off Blind Spot Assist when:
R the SmartKey is in position 2in the igni-
tion lock
R the engine is not running
R the electrical connection to the trailer
has been established
Lane Keeping Assist General notes
0043
Lane Keeping Assist camera
Lane Keeping Assist monitors the area in
front of your vehicle by means of a camera 0043
at the top of the windshield. Lane Keeping
Assist detects lane markings on the road and
warns you before you leave your lane unin-
tentionally.
If you select km kmon the on-board computer in
the Display Unit Speed-/Odometer
Display Unit Speed-/Odometer func-
tion (Y page 285), Lane Keeping Assist is
active starting at a speed of 60 km/h. If the
miles miles display unit is selected, the assistance
range begins at 40 mph.
A warning may be given if a front wheel
passes over a lane marking. It will warn you by means of intermittent vibration in the steer-
ing wheel for up to 1.5 seconds.
Important safety notes G
WARNING
Lane Keeping Assist may not always clearly
recognize lane markings. Driving systems
247Driving and parking
Z

If the current vehicle speed is too high, the
00C6 DSR symbol appears in the multifunc-
tion display with the Max. speed 25 mph
Max. speed 25 mph
message (Canada: 40 km/h
40 km/h).
i You cannot activate DSR if the SPORT on-
road program is activated. The 00C6DSR
symbol and the Not in Drive Program
Not in Drive Program
SPORT
SPORT message then appears in the multi-
function display.
Deactivating DSR
X Press button 0043.
Indicator lamp 0044goes out.
The 00C6 DSR symbol appears in the mul-
tifunction display with the Off
Off message.
DSR switches off automatically if you drive
faster than 28 mph (Canada: 45 km/h). The
00C6 DSR symbol appears in the multifunc-
tion display with the Off
Off message. The status
indicator in the multifunction display goes
out. You also hear a warning. On vehicles with the ON&OFFROAD package, if you select a
different on-road/off-road program, DSR is
also deactivated.
Changing the set speed X
To increase or decrease in 1 mph incre-
ments (Canada: 1 km/h increments):
briefly press the cruise control lever up 0043for a higher set speed or down
0044for a
lower set speed.
The set speed appears in the multifunction display with the 00C6DSR symbol. It is also
displayed in status indicator 0087.
When DSR is activated, you can change the
set speed to a value between 1 mph and
11 mph (Canada: between 2 km/h and
18 km/h).
i The DSR set speed is always changed in
1 mph increments (Canada: 1 km/h incre-
ments). This is regardless of whether you
press the cruise control lever to or beyond
the pressure point.
Off-road programs (vehicles with the
ON&OFFROAD package) General notes
The off-road programs assist you in driving
off-road. The engine's performance charac-
teristics and the gearshifting characteristics
of the automatic transmission are adapted for
this purpose. ABS, ESP ®
and 4ETS programs
especially adapted to off-road driving are acti-
vated. An accelerator pedal curve suitable for the terrain is selected, i.e. the accelerator
pedal must be depressed further to acceler-
ate.
Do not use the off-road programs on roads
that are snow-covered or icy or if you have
mounted snow chains on your vehicle.
For information on driving off-road, see
(Y page 199).
The following program messages are shown
in the multifunction display until the applica-
ble vehicle level is set. Up to off-road level 2,
you can hide the program messages using the 0038 or the 0076button on the multifunction
steering wheel. Driving systems
259Driving and parking Z

Off-road program 1
X
Selector wheel 0043
0043engaged: briefly press
selector wheel 0043.
Selector wheel 0043extends.
X To select: turn selector wheel 0043until indi-
cator lamp 0044comes on.
Off-road indicator 0087appears in the multi-
function display.
Off-road level 1 is set to +1.2 in (+30 mm)
above the vehicle's "highway" level.
Off-road program 1 switches to the AUTO
program if you drive faster than 70 mph
(110 km/h).
Select off-road program 1 for gentle off-road
terrain, e.g. for gravel or sand surfaces or
tracks. The engine's torque is restricted to a
limited degree and the drive wheels can spin.
The spinning wheels produce a cutting effect
for better traction.
You can only activate off-road program 1
when driving at speeds of 60 mph (100 km/h)
or below. The Drive Program OFFROAD 1
Drive Program OFFROAD 1
Max. Max. 60
60mph (
mph (100 100km/h)
km/h) message appears
in the multifunction display. Off-road program 2
X
Selector wheel 0043
0043engaged: briefly press
selector wheel 0043.
Selector wheel 0043extends.
X To select: turn selector wheel 0043until indi-
cator lamp 0044comes on.
Off-road indicator 0087appears in the multi-
function display.
R Off-road level 1 is set to +2.4 in (+60 mm)
above the vehicle's "highway" level.
R DSR is switched on.
R The differential lock is closed.
Off-road program 2 automatically switches to off-road program 1 if you drive faster than
30 mph (45 km/h).
Select off-road program 2 for rough terrain,
e.g. for steep and/or rough terrain or drivingon rocky terrain.
i Your vehicle has an automatically activa-
ted differential lock for the transfer case. It controls the balance between the front and
rear axles. 260
Driving systemsDriving and parking

The differential lock improves the vehicle's
traction. 4ETS (Y page 73) controls the bal-
ance between both wheels on an axle.
You can only activate off-road program 2
when driving at speeds of 25 mph (40 km/h)
or below.
LOW RANGE off-road gear (vehicles
with the ON&OFFROAD package) Important safety notes
G
WARNING
If you select the LOW RANGE off-road gear on a slippery road surface, the wheels could lose traction:
R if you remove your foot from the accelera-
tor pedal when driving
R if off road ABS intervenes when braking
If the wheels lose traction. the vehicle can no
longer be steered. There is an increased dan-
ger of skidding and accidents.
Never select the LOW RANGE off-road gear
when driving on slippery road surfaces. G
WARNING
If you do not wait for the transfer case gear
change process to complete, the transfer
case could remain in the neutral position. The power transmission to the driven wheels is
then interrupted. There is a danger of the
vehicle rolling away unintentionally. There is a
risk of an accident.
Wait until the transfer case shift process is
completed.
Do not turn off the engine while changing gear
and do not shift the automatic transmission
to another position. General notes 0043
LOW RANGE off-road gear button
0044 LOW RANGE off-road gear indicator lamp HIGH RANGE
Position for all normal on-
road driving conditions
LOW RANGE
Off-road position for driv-
ing off-road and fording
The transmission ratio
between the engine and
wheels is only approx-
imately one third of that in
the HIGH RANGE road
position. Drive torque is
thus proportionately
higher.
Do not use LOW RANGE:
R on slippery road surfa-
ces, e.g. in the case of
slush
R on snow or ice-covered
roads
R if you have mounted
snow chains to your
vehicle The LOW RANGE off-road gear assists you in
driving off-road and when fording. When LOW
RANGE is engaged, the engine’s performance
characteristics and the gearshifting charac-
teristics of the automatic transmission are
adapted for this purpose.
Further information about "Driving off-road"
(Y page 199). You will find information about
driving safety systems in conjunction with Driving systems
261Driving and parking Z

LOW RANGE in the "Safety" section
(Y
page 68).
From HIGH RANGE to LOW RANGE ! Only change from LOW RANGE to HIGH
RANGE if:
R the engine is running.
R the transmission is in position N
R you are driving at a speed below
40 km/h
X Press LOW RANGE button 0043.
Indicator lamp 0044flashes.
When the gear change is complete, indica-
tor lamp 0044lights up. LOW RANGE indica-
tor appears in the multifunction display and in the status indicator.
While indicator lamp 0044is flashing, you can
cancel the gear change by pressing LOW
RANGE button 0043again.
i You cannot activate LOW RANGE if the
SPORT on-road program is activated. The
LOW RANGE Not in Drive Program LOW RANGE Not in Drive Program
SPORT SPORT message then appears in the multi-
function display.
From LOW RANGE to HIGH RANGE ! Only change from LOW RANGE to HIGH
RANGE if:
R the engine is running.
R the transmission is in position N
R you are driving at a speed below
70 km/h
X Press LOW RANGE button 0043.
Indicator lamp 0044flashes.
When the gear change is complete, indica- tor lamp 0044goes out. In the multifunction
display, the LOW RANGE Off
LOW RANGE Off message
appears and status indicator 0087goes out.
While indicator lamp 0044is flashing, you can
cancel the gear change by pressing LOW
RANGE button 0043again. 262
Driving systemsDriving and parking

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 messages
Possible causes/consequences and
0050 0050Solutions LOW RANGE Max.
LOW RANGE Max.
Speed 40 km/h Speed 40 km/h You have been driving faster than 40 km/h. Additionally, the indi-
cator lamp on the button in the center console blinks.
X Drive more slowly to carry out the gear change process. LOW
LOW
RANGE
RANGE Shift
Shiftto
to
Position N Briefly
Position N Briefly The transmission is in position
Dand you are driving at below
40 km/h.
X Shift the transmission to Nto complete the gear change proc-
ess. LOW
LOW
RANGE
RANGE Shifting
Shifting
Canceled Please
Canceled Please
Reactivate Reactivate The gear change process was not carried out.
X Ensure that all gear change conditions are fulfilled and carry out
the gear change process again. LOW RANGE Stop
LOW RANGE Stop
Apply Apply
Parking
Parking Brake
Brake 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.
X Stop the vehicle. Take into account the road and traffic condi-
tions when doing this.
X Depress the electric parking brake (Y page 192).
X Carry out the gear change process again.
If the gear change process has been carried out, the LOW LOWRANGE
RANGE
Stop Apply Parking Brake
Stop Apply Parking Brake message disappears.ON&OFFROAD menu in the COMAND
display (vehicles with the ON&OFF-
ROAD package) You can display some driving systems, driving
programs and additional information in the
COMAND display.
X Make sure that the SmartKey is in position
2 in the ignition lock.
X Make sure that COMAND is activated, see
the separate COMAND operating instruc-
tions.
X Press function button 0043.
The corresponding displays appear in the
COMAND display:
R level control
R steering angle
R vehicle's angle of inclination Driving systems
263Driving and parking Z

When towing a trailer, your vehicle's handling
characteristics will be different in comparison with when driving without a trailer.
The vehicle/trailer combination:
R is heavier
R is restricted in its acceleration and gradi-
ent-climbing capability
R has an increased braking distance
R is affected more by strong crosswinds
R demands more sensitive steering
R has a larger turning radius
This could impair the handling characteris-
tics.
When towing a trailer, always adjust your
speed to the current road and weather con-
ditions. Do not exceed the maximum permis- sible speed for your vehicle/trailer combina-
tion. Notes on towing a trailer
General notes R
Do not exceed the legally prescribed max-
imum speed for vehicle/trailer combina-
tions in the relevant country.
This lowers the risk of an accident.
R Only install an approved trailer coupling on
your vehicle.
Further information on availability and on
installation is available from any authorized
Mercedes-Benz Center.
R The bumpers of your vehicle are not suita-
ble for installing detachable trailer cou-
plings.
R Do not install hired trailer couplings or
other detachable trailer couplings on the
bumpers of your vehicle.
R If you no longer need the ball coupling,
remove it from the ball coupling recess.
This will reduce the risk of damage to the
ball coupling.
i When towing a trailer, set the tire pres-
sure on the rear axle of the towing vehicle for a maximum load; see the tire pressure
table in the fuel filler flap (Y
page 427).
Please note that when towing a trailer, PARK-
TRONIC (Y page 225) and Blind Spot Assist
(Y page 245) are only available with limita-
tions, or not at all.
You will find installing dimensions and loads
under "Technical data" (Y page 458).
Driving tips i
Observe the information on ESP ®
trailer
stabilization (Y page 75) and on pulling
away with a trailer (Y page 171).
The maximum permissible speed for vehicle/ trailer combinations depends on the type of
trailer. Before beginning the journey, check
the trailer's documents to see what the max-imum permissible speed is. Observe the
legally prescribed maximum speed in the rel-
evant country.
For certain Mercedes-Benz vehicles, the max- imum permissible rear axle load is increased
when towing a trailer. See "Technical data" to
find out whether this applies to your vehicle
(Y page 459). If you utilize any of the added
maximum rear axle load when towing a trailer, the vehicle/trailer combination may not
exceed a maximum speed of 60 mph
(100 km/h) for reasons concerning the oper-
ating permit. This also applies in countries in
which the permissible maximum speed for
vehicle/trailer combinations is above 60 mph
(100 km/h).
When towing a trailer, your vehicle's handling
characteristics will be different in comparison with when driving without a trailer.
Use the left-hand paddle shifter to shift into a
lower gear in good time on long and steep
downhill gradients.
i This also applies if you have activated
cruise control or DISTRONIC PLUS.
This will use the braking effect of the engine,
so that less braking will be required to main-
tain the speed. This relieves the load on the
brake system and prevents the brakes from Towing a trailer
265Driving and parking Z