
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 vicin-
ity 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 cov-
ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
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 andthere 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 by means of
intermittent vibration in the steering wheel for
up to 1.5 seconds.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system detects 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 detects 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 appli-
cation.
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 driv-
ing 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 you leave your lane, under certain circumstan-
ces the vehicle will brake briefly on one side.
This is meant to assist you in bringing the vehicle
back to the original lane.
If a lane-correcting brake application occurs,
display :appears in the multifunction display.
A lane-correcting brake application can be made
after driving over a lane marking recognized as
being solid or broken. 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 recog-
nized.
234Driving systems
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In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detected
in the adjacent lane. The following vehicles can
have an influence on brake application: oncom-
ing traffic, vehicles that are overtaking and vehi-
cles that are driving parallel to your vehicle.
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 accel-
erate.
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 accel-
eration.
RESP®is switched off.
Rthe transmission is not in position D.
Ron vehicles with a trailer tow hitch, the elec-
trical connection to the trailer has been cor-
rectly established.
Rthe offroad program is activated (vehicles
without the Offroad Engineering package).
Rthe Offroad or Offroad Plus drive program is
activated (vehicles with the Off-Road Engi-
neering package).
Rthe LOW RANGE offroad gear is activated
(vehicles with the Offroad Engineering pack-
age).
Ran obstacle has been detected in the lane in
which you are driving.
Rwhen a loss of tire pressure or a defective tire
has been detected and displayed.
There is a possibility that the Active Lane Keep-
ing Assist could misjudge the given traffic sit-
uation. 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 interrup-
ted automatically if:
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist
Rlane markings are no longer detected
Switching on Active Lane Keeping Assist
XSwitch on Active Lane Keeping Assist using
the on-board computer; to do so, select
Standard
or Adaptive(Ypage 272).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lines in the assistance graphics display
(
Ypage 271) are shown in green. Active Lane
Keeping Assist is ready for use.
If Standard
is 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®.
When Adaptive
is selected, no warning vibra-
tion 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. Lane-correcting brake application does not take place when towing a trailer. Active Lane
Keeping Assist is not activated and the lines in
the assistance graphic are gray.
Off-road driving systems
4MATIC (permanent four-wheel drive)
4MATIC ensures that all four wheels are perma-
nently driven. Together with ESP®and 4ETS, it
improves the traction of your vehicle whenever
a drive wheel spins due to insufficient grip.
If you fail to adapt your driving style, 4MATIC can
neither reduce the risk of accident nor override
the laws of physics. 4MATIC cannot take
account of road, weather and traffic conditions.
4MATIC is only an aid. You are responsible for
Driving systems235
Driving and parking
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the distance to the vehicle in front, for vehicle
speed, for braking in good time and for staying in
your lane.
!Never tow the vehicle with one axle raised.
This may damage the transfer case. Damage
of this sort is not covered by the Mercedes-
Benz Limited Warranty. All wheels must
remain either on the ground or be fully raised.
Observe the instructions for towing the vehi-
cle with all wheels in full contact with the
ground.
!A function or performance test should only
be carried out on a two-axle dynamometer.
Before you operate the vehicle on such a
dynamometer, please consult a qualified
workshop. You could otherwise damage the
drive train or the brake system.
iIn wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if you
use winter tires (M+S tires), with snow chains
if necessary.
Further information about "Driving off-road"
(
Ypage 186).
DSR (Downhill Speed Regulation)
General notes
DSR is an aid to assist you when driving down-
hill. It keeps the speed of travel at the speed
selected on the on-board computer. The steeper
the downhill gradient, the greater the DSR brak-
ing effect on the vehicle. When driving on flat
stretches of road or on an uphill gradient, the
DSR braking effect is minimal or nonexistent.
DSR controls the vehicle’s speed when it is acti- vated and the transmission is in position D,R or
N. You can drive at a higher or a lower speed
than that set on the on-board computer at any
time by accelerating or braking.
Important safety notes
GWARNING
If the speed driven and the set speed deviate and you activate DSR on a slippery road sur-
face, the wheels may lose traction. There is an
increased danger of skidding and accidents.
Before switching DSR on, please take into
consideration the road surface and the differ- ence between driving speed and the set
speed. If you fail to adapt your driving style, DSR can
neither reduce the risk of accident nor override
the laws of physics. DSR cannot take account of
road, weather and traffic conditions. DSR is only
an aid. You are responsible for the distance to
the vehicle in front, for vehicle speed, for brak-
ing in good time and for staying in your lane.
You are always responsible for keeping control
of the vehicle and for assessing whether the
downhill gradient can be managed. DSR may not always be able to keep to the set speed, depend-
ing on road surface and tire conditions. Select a
set speed suitable for the prevailing conditions
and when necessary, apply the brakes manually.
Activating DSR
XPress button :.
Indicator lamp ;lights up.
The à DSR symbol appears in the multi-
function display.
You can only activate DSR when driving at
speeds below 25 mph (40 km/h).
If the current vehicle speed is too high, the Ã
DSR symbol appears in the multifunction display
with the Max. speed 25 mph
message (Can-
ada: 40 km/h).
If you have activated DSR and you change the
drive program, DSR is deactivated. If you switch
between the offroad and offroad plus drive pro-
grams, DSR remains activated.
Deactivating DSR
XPress button :.
Indicator lamp ;goes out.
The à DSR symbol appears in the multi-
function display with the Off
message.
On vehicles with the Offroad Engineering pack-
age, if you select a different drive program, DSR is also deactivated. If you switch between the
Offroad programs, DSR remains activated.
236Driving system s
Driving an d parking

DSR switches off automatically if you drive
faster than 28 mph (Canada: 45 km/h). The
ÃDSR symbol appears in the multifunction
display with the Off
message. The status indi-
cator in the multifunction display goes out. You
also hear a warning. On vehicles with the Off-
road Engineering package, if you select a differ-
ent onroad/offroad program, DSR is also deac-
tivated.
Changing the set speed
XTo increase or reduce the set speed in
1 mph increments (Canada: 1 km/h incre-
ments): briefly press the cruise control lever
up : for a higher set speed or down ;for a
lower set speed.
The set speed appears in the multifunction
display with the ÃDSR symbol.
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).
iThe 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.
Offroad program (vehicles without the
Offroad Engineering package)
General notes
Select the Offroadprogram for easily negotia-
ble off-road terrain, e.g. dirt tracks, gravel or
sandy surfaces. The engine's torque is restric-
ted to a limited degree and the drive wheels can
spin. The spinning wheels produce a cutting
effect for better traction. ABS, ESP
®and 4ETS
programs especially adapted to off-road driving are activated. A gentle accelerator pedal curve
is also selected, i.e. the accelerator pedal must be depressed much further in order to acceler-
ate.
You can select the
Offroaddrive program at
speeds below 60 mph (96 km/h). The Drive
program"Offroad"Maxspeed60mphmes-
sage appears in the multifunction display. If you
drive at speeds of more than 60 mph
(100 km/h) and select the Offroaddrive pro-
gram, the Drive More Slowly
message
appears in the multifunction display. The last
active drive program is selected again.
Do not use the Offroadprogram on roads that
are snow-covered or icy or if you have installed
your vehicle with snow chains.
Selecting the Offroad program
Selecting the Offroad program
XTo select drive program: turn DYNAMIC
SELECT controller :until indicator lamp ;
lights up.
The Drive Program "Offroad1" Max.
Speed 60 mphmessage appears in the mul-
tifunction display.
The vehicle is raised by +2.4 in (60 mm).
The vehicle changes from the Offroaddrive pro-
gram to the Comfortdrive program if you drive
faster than 70 mph (112 km/h).
The Drive More Slowly
message appears in
the multifunction display.
Further information about "Driving off-road"
(
Ypage 186).
Offroad programs (vehicles with Off-
road Engineering package)
General notes
The Offroad andOffroad Plus drive programs
assist you when driving off-road. The engine's
performance characteristics and the gearshift-
Driving system s237
Driving an d parking
Z

ing characteristics of the automatic transmis-
sion are adapted for this purpose. ABS, ESP®
and 4ETS programs especially adapted to off-
road driving are activated. An accelerator pedal
curve suitable for the terrain is selected, i.e. the
accelerator pedal must be depressed further to
accelerate.
Do not use the OffroadorOffroad Plus drive
programs on roads that are snow-covered or icy,
or if you have installed your vehicle with snow
chains.
Offroad drive program
:DYNAMIC SELECT controller
;Offroad program indicator lamp
Select the Offroadprogram for easily negotia-
ble off-road terrain, e.g. dirt tracks, gravel or
sandy surfaces. The engine's torque is restric-
ted to a limited degree and the drive wheels can
spin. The spinning wheels produce a cutting
effect for better traction. ABS, ESP
®and 4ETS
programs especially adapted to off-road driving are activated. A gentle accelerator pedal curve
is also selected, i.e. the accelerator pedal must
be depressed much further in order to acceler-
ate.
You can select the Offroaddrive program at
speeds below 60 mph (96 km/h). The Drive
Program "Offroad" Max. Speed 60 mphmessage appears in the multifunction display. If
you drive at speeds above 60 mph (96 km/h)
and select theOffroaddrive program, the
Drive More Slowly
message appears in the
multifunction display. The last active drive pro-
gram is selected again.
Selecting the Offroad program
XTo select a drive program: turn DYNAMIC
SELECT controller :until indicator lamp ;
lights up.
The Drive program "Offroad" Max.
speed 60 mphmessage appears in the mul-
tifunction display.
The vehicle is raised by +1.2 in (30 mm).
The vehicle changes from the Offroaddrive pro-
gram to the Comfortdrive program if you drive
faster than 70 mph (112 km/h).
The Drive more slowly
message appears in
the multifunction display.
Offroad Plus drive program
:DYNAMIC SELECT controller
;Offroad Plus drive program indicator lamp
Select the Offroad Plus drive program for rough
terrain, e.g. for steep and/or uneven terrain or
for driving on rocky terrain.
Your vehicle has an automatically activated dif-
ferential lock for the transfer case. It controls
the balance between the front and rear axles.
The differential lock improves the vehicle's trac-
tion. 4ETS (
Ypage 72) controls the balance
between both wheels on an axle.
Selecting the Offroad Plus drive program
XTo select drive program: turn DYNAMIC
SELECT controller :until indicator lamp ;
lights up.
The Drive program "Offroad Plus"
Max.speed25mphmessage appears in the
multifunction display.
RThe Offroad Plus program is selected and
the vehicle is raised by +1.2 in (30 mm)
compared with the Offroaddrive program.
RDSR is switched on.
RThe differential lock is closed.
238Driving systems
Driving and parking

You can select the Offroad Plus drive program at
speeds below 25 mph (40 km/h).
The Offroad Plus drive program automatically
switches to the Offroad drive program if you
drive faster than 30 mph (45 km/h). TheDrive
more slowlymessage appears in the multi-
function display.
Further information about "Driving off-road"
(
Ypage 186).
LOW RANGE offroad gear (vehicles with
the Offroad Engineering package)
Important safety notes
GWARNING
If you select the LOW RANGE off-road gear on
a slippery road surface, the wheels could lose traction:
Rif you remove your foot from the accelera-
tor pedal when driving
Rif 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.
GWARNING
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
:LOW RANGE offroad gear button
;LOW RANGE offroad gear indicator lamp
HIGH RANGEPosition for all normal on-
road driving conditions
LOW RANGEOffroad position for driving
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 posi-
tion. Drive torque is thus
proportionately higher.
Do not use LOW RANGE:
Ron slippery road surfaces,
e.g. in the case of slush
Ron snow or ice-covered
roads
Rif you have mounted snow
chains to your vehicle
The LOW RANGE offroad gear assists you in
driving off-road and when fording. When LOW
RANGE is engaged, the engine’s performance
characteristics and the gearshifting character-
istics of the automatic transmission are adapted
for this purpose.
Further information about "Driving off-road"
(
Ypage 186). You will find information about
driving safety systems in conjunction with
LOW RANGE in the "Safety" section (
Ypage 66).
Driving systems239
Driving and parking
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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 andMSolutions
LOW RANGE Max.Speed 24 mphYou have been driving faster than 24 mph (40 km/h). Additionally, the
indicator lamp on the button in the center console is flashing.
XDrive more slowly to carry out the gear change process.
LOW RANGE Shift toPosition N BrieflyThe transmission is in positionDand you are driving at below
40 km/h.
XShift the transmission to Nto complete the gear change process.
LOW RANGE ShiftingCanceled PleaseReactivate
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 StopApply Parking BrakeA warning tone also sounds. The gear change process has not been
completed. LOW RANGE is in the neutral position. There is no con-
nection between the engine and the drive wheels.
!Do not drive any further. You could otherwise damage the vehi-
cle's drive train.
XStop the vehicle. Take into account the road and traffic conditions
when doing this.
XDepress the electric parking brake (Ypage 179).
XCarry out the gear change process again.
If the gear change process has been carried out, the LOW RANGE
Stop Apply Parking Brakemessage disappears.
Driving dynamics display in the
COMAND display (vehicles with the Off-
road Engineering-package)
General notes
The driving dynamics display allows you to see
the selected drive program and additional infor-
mation about the vehicle's operating status in
the COMAND display.
:Drive program selected
;Status of the differential lock for the transfer
case
=Accelerator pedal position shown in %
?Brake pedal position shown in %
ACondition of the LOW RANGE offroad gear
BAngle of inclination
CSteering angle
DUphill or downhill gradient in percentage
Driving systems241
Driving and parking
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If manual gearshifting is deactivated, the auto-
matic transmission shifts:
Rinto the drive program that was last selected,
and
Rinto the driving mode that was last selected
If you change the drive program, the operating
mode that was last selected is stored for approx-
imately 60 seconds. After this time, the HYBRID
operating mode is automatically activated.
Operating the on-board computer
You can display the current operating condition
of the hybrid drive system in the multifunction
display and the multimedia system in the form of
an energy flow display (
Ypage 247).
In the multimedia system display, you can also
call up a graphic display of the fuel consumption
and generated electricity (
Ypage 250).
Menus and submenus
Selecting displays in the display of the
multimedia system
XPress the Øbutton on the multimedia sys-
tem.
The vehicle menu is displayed.
XTo select Energy flow: turn and press the
controller.
The energy flow is displayed.
or
XTo select Consumption: turn and press the
controller.
Fuel consumption and the generated electric
energy are displayed.
XTo exit the display: press the %button on
the controller.
Selecting the energy flow display in the
multifunction display
XPress the =or; button on the steering
wheel to select the Tripmenu.
XUse: or9 to select Energy flow.
XConfirm by pressing aon the steering
wheel.
The active components of the hybrid drive
system are highlighted in the energy flow dis- play.
Energy flow display
Overview
:Internal combustion engine
;Electric motor
=High-voltage battery condition of charge
?High-voltage battery
AEnergy flow
The active components of the hybrid drive sys-
tem are highlighted.
The energy flow is indicated by arrows. The
arrows have a different color depending on the
operating state.
Automatic engine switch-off
The engine and electric motor are switched off.
The arrows for the energy flow are not shown.
The condition of charge of the high-voltage bat-
tery is shown when the SmartKey is in position 2
in the ignition lock.
PLUG-IN HYBRID operation247
Driving and parking
Z