Cruise controlisdeactivated automatically
when:
Ryou apply the brakes
Ryouapply the parking brake and the c
indicator lamp inthe instrument cluster lights
up
Ryou are driving slower than 20 mph (30 km/h)
Ryou shift the automat ictransmission to neu-
tral position Nwhile the vehicle is inmotion
RESP®or ASR intervenes
Rthere isa malfunction inthe ESP®, ASR or ABS
system
Problems with cruise control
ProblemPossible causes/consequences and MSolutions
On vehicleswit h steering
wheel buttons, the
speed cannot beset
when cruise control is
activated.The displ ay shows a high-priority message. Thus a change in speed is
not possible.
XProceed as instructed by the message inthe display.
XDeactivate cruise control
COLLISION PREVENTION ASSIST
General notes
COLL ISION PREVENTION AS SISTcomprises the
dist ance warning function and adaptive Brake
Assist.
Distance warning function
Important safety notes
iNote the section on 'Important safety notes'
(Ypage 54).
GWAR NING
The distance warning function does not react:
Rto people or animals
Rto oncoming veh icles
Rto crossing traff ic
Rwhen cornering
The distance warning function may not give
warnings inall critical situations. There isa
risk of an acc ident.
Alwa ys pay careful attention to the traff icsit-
uation and beready to brake.
Alwa ys adapt your speed to suit the pre vailing
road and traff icconditions.
GWARNING
The distance warning function cannot always
clearly identify objects and co mplex traffic
situations.
In such cases, the distance warning function
may:
Rgive an unnecessary warning
Rnot give a warning
There isa risk of an accident.
Always pay careful attention to the traffic sit-
uation and donot rely solely on the distance
warning function.
Operation
The distance warning function can help you to
minimize the risk of a front-end collision with a
vehicle ahead or reduce the effects of such a
collision. If the distance warning function
detects that there is a risk of a collision, you will
be warned visually and acoustically. Without
your intervention, the distance warning function
cannot prevent a collision.
The distance warning function willissue a warn-
ing at speeds of around 20 mph (30 km/h)or
more if:
Ryou approach a vehicle ahead of you very
quickly. You will then hear an intermittent
warning tone and the red ·warning lamp
in the instrument cluster flashes.
Driving systems141
Driving and parking
Z
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action provided it is safe to do
so.
If you want the distance warning function to
assist you, the function must be activated and
operational.
Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
With the help of the radar sensor system, the
distance warning function can detect obstacles
that are in the path of your vehicle for an exten-
ded period of time.
Up to a speed of 45 mph (70 km/h), the distance
warning function can also react to stationary
obstacles, such as stopped or parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision, the
system will alert you both visually and acousti-
cally.
In particular, the detection of obstacles can be
impaired in the case of:
Rdirt, ice or anything else covering the sensors
Rsnow or heavy rain
Rinterference from other radar sources
Rthere are strong radar reflections, for exam-
ple in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
Following damage to the front end of the vehicle,
have the configuration and operation of the
radar sensor checked at a qualified specialist
workshop. This also applies to collisions at slow
spe eds w
here there is no visible damage to the
front of the vehicle.
Activating/deactivating the distance
warning function
When you switch on the engine, the distance
warning function switches on after a few sec-
onds.
XTo deactivate: press theæbutton
(Ypage 37).
Vehicles without steering wheel buttons:
the Ä warning lamp in the instrument clus-
ter lights up and the OFF
message flashes. The
message then disappears and the Äindi-
cator lamp remains lit. Vehicles with steering wheel buttons:
the
Ä warning lamp in the instrument cluster
flashes and the Distance
WarningSystemDeactivatedmessage appears .The mes-
sage then disappears and the Äwarning
lamp remains lit.
XTo activate: press theæbutton again
(Ypage 37).
Vehicles without steering wheel buttons:
the Ä warning lamp in the instrument clus-
ter lights up and the on
message flashes. The
message then disappears and the Äindi-
cator lamp goes out.
Vehicles with steering wheel buttons: the
Ä warning lamp in the instrument cluster
flashes and the Distance
WarningSystemActivatedmessage appears in the multi-
function display. The message then disap-
pears and the indicator lamp Ägoes out.
Adaptive Brake Assist
iObserve the "Important safety notes" sec-
tion for driving safety systems (Ypage 54).
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
GWARNING
Adaptive Brake Assist does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rto stationary obstacles
Rwhen cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
142Driving systems
Driving and parking
Collision warning
If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds once. Red warning lamp:flashes. If
the turn signal remains on, detected vehicles
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Activating/deactivating Blind Spot Assist
iBlind Spot Assist is activated when you
switch on the ignition.
XTurn the key to position 2in the ignition lock.
Warning lamps :in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow.
XTo deactivate: press thekbutton in the
center console (Ypage 37).
The yellow indicator lamp in exterior mirror :
first flashes and then lights up continuously.
XTo activate: press thekbutton in the
center console again (Ypage 37).
The yellow indicator lamp in exterior mirror :
flashes initially. If you exceed 20 mph
(30 km/h) while driving, the yellow indicator
lamp in exterior mirror :goes out.
Towing a trailer
If you attach a trailer, make sure that you have
correctly established the electrical connection.
This can be accomplished by checking the trailer
lighting. Blind Spot Assist is deactivated as a
result. The indicator lamp in the exterior mirrors
lights up yellow.
On veh icles wit
h steering wheel buttons, the
Blind Spot Assist Deactivatedmessage
also appears in the display.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in front of
your vehicle by means of a camera at the top of
the windshield. Lane Keeping Assist detects
lane markings on the road and warns you before
you leave your lane unintentionally.
:Lane Keeping Assist camera
Lane Keeping Assist supports you from speeds
of approximately 40 mph(60 km/h).
If Lane Keeping Assist detects lane markings,
the à indicator lamp in the instrument clus-
ter lights up green. Lane Keeping Assist is opera-
tional.
Important safety notes
GWARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
GWARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane Keep-
ing Assist can neither reduce the risk of accident
nor override the laws of physics. Lane Keeping
Assist cannot take into account road, weather or traffic conditions. Lane Keeping Assist is only an
aid. You are responsible for the distance to the
vehicle in front, for vehicle speed, braking in
good time and for staying in your lane.
Driving systems145
Driving and parking
Z
Lane Keeping Assist does not keep your vehicle
in its lane.
The system may be impaired or may not function
if:
Rif the vehicle is incorrectly loaded
(Ypage 213)
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 reflection from other vehicles (e.g. if
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
Rno, or several, unclear lane markings are pres-
ent for one lane, e.g. in a construction area
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 road
A warning may be given if a front wheel passes
over a lane marking. In addition, a warning tone
sounds and the Ãindicator lamp in the
instrument cluster flashes red.
Activating/deactivating Lane Keeping
Assist
Lane Keeping Assist is automatically activated
when you start the engine.
XTo deactivate: press thejbutton in the
center console (Ypage 37).
On vehicles without steering wheel but-
tons:
OFF
flashes briefly in the display and the Ã
indicator lamp in the instrument cluster
flashes yellow and then lights up continu-
ously.
On vehicles with steering wheel buttons:
The Lane
Keep.AssistDeactivatedmes-
sage appears in the display and the Ã
indicator lamp in the instrument cluster
flashes yellow and then lights up continu-
ously. Lane Keeping Assist is deactivated.
XTo activate:
press thejbutton in the
center console again (Ypage 37).
On vehicles without steering wheel but-
tons:
on
flashes briefly in the display and the Ã
indicator lamp in the instrument cluster goes
out. If a lane marking is detected, the Ã
indicator lamp lights up green.
On vehicles with steering wheel buttons:
The Lane Keep. Assist Activated
mes-
sage appears in the display and the Ã
indicator lamp in the instrument cluster goes
out. If a lane marking is detected, the Ã
indicator lamp lights up green.
Lane Keeping Assist is activated.
A Lane Keeping Assist warning is suppressed if:
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
Ryou have set the turn signal and a lane change is detected. In this case, the warnings are
suppressed for a certain period of time.
Ryou accelerate hard, e.g. kickdown on vehi-
cles with an automatic transmission.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
Lane Keeping Assist warns you earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a freeway.
Rthe system recognizes solid lane markings.
Warnings are given later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
All-wheel drive
Important safety notes
!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
146Driving systems
Driving and parking
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.
If you fail to adapt your driving style or if you are
inattentive, the all-wheel drive system can nei-
ther reduce the risk of an accident nor override
the laws of physics. The all-wheel drive system
cannot take road, weather and traffic conditions
into account. The all-wheel drive system is only
an aid. You are responsible for the distance to
the vehicle in front, for vehicle speed and for
braking in good time.
4ETS ensures permanent drive for all four
wheels, and together with ESP
®it improves the
vehicle's traction.
If a driven wheel spins due to lack of traction:
RWhen pulling away, make use of the traction
control integrated in ESP®. Depress the
accelerator pedal as far as necessary.
RWhile driving, slowly take your foot off the
accelerator pedal
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains
(
Ypage 251). This is the only way to get the full
benefit from the all-wheel drive system.
For information on "Driving off-road", see
(
Ypage 137).
Engaging all-wheel drive
Conditions for engaging/disengaging
All-wheel drive can only be engaged or disen-
gaged if:
Rthe engine is running
Rthe vehicle is stationary
If it is not possible to engage all-wheel-drive:
Rmove the selector lever to position N
Rrelease the brake pedal
Rpress the;button
Rmove the selector lever from Nto Dor R
Engaging/disengaging all-wheel drive
XTo engage/disengage: press the;but-
ton.
The indicator lamp in the ;button flashes.
The h and: indicator lamps light up in
the instrument cluster. ESP
®and ASR are
deactivated for the duration of the engaging/ disengaging process.
If the engaging/disengaging process is suc-
cessful, the hand: indicator lamps in
the instrument cluster go out and ESP
®and
ASR are reactivated.
If the indicator lamp in the ;button is lit,
all-wheel drive is engaged. On vehicles with
steering-wheel buttons, the display then
shows the following message: Four-wheel
drive active.
If the engaging/disengaging process fails, the indicator lamp in the ;button flashes
three times briefly. One of the gear change
conditions was not fulfilled.
As long as the indicator lamp in the ;button
is flashing, you can cancel the engaging/disen-
gaging process by pressing the ;again.
iIf the LOW RANGE transmission ratio
(Ypage 147) is engaged, all-wheel drive can-
not be disengaged.
LOW RANGE transmission ratio
General notes
The LOW RANGE transmission ratio assists you
when driving on difficult terrain. If you engage
LOW RANGE, the engine's performance charac-
teristics and the automatic transmission's shift-
ing characteristics are adjusted accordingly.
The transmission ratio from the engine to the
wheels is around 40% lower than in the on-road position. This increases the drive torque.
Driving systems147
Driving and parking
Z
the LOW RANGE transmission ratio is engaged,
only use the cruise control lever to operate DSR.
When the LOW RANGE transmission ratio is dis-
engaged, use cruise control.
Activation conditions
In order to activate DSR, both activation condi-
tions must be fulfilled:
RThe LOW RANGE transmission ratio is
engaged. The+indicator lamp in the
instrument cluster lights up.
RThe vehicle is stationary or you are not driving faster than 11 mph (18 km/h).
Activating DSR
You can activate DSR when the vehicle is sta-
tionary or moving.
XBrake or accelerate the vehicle to the
required speed between 2.5 mph (4 km/h)
and 11 mph (18 km/h).
XBriefly push the cruise control lever up :or
down =.
or
XBriefly pull the cruise control lever towards
you ;.
XRelease the brake or accelerator pedal.
The current speed is stored. When the vehicle
is stationary, the speed is stored at 2.5
(4 km/h). DSR maintains the stored speed on
the downhill gradient and brakes automati-
cally.
When DSR is activated and the vehicle pulls
away, accelerates or brakes, the speed set cor-
responds to the speed at which the accelerator
or brake pedal is released. Thi s i
s only the case
if you are not driving faster than 11 mph
(18 km/h).
DSR status indicator in the on-board com-
puter
Vehicles with steering wheel buttons
LOW RANGE is engaged
RThe DSRmessage is displayed in the status
area of the on-board computer.
RDSR can be activated.
DSR is activated
RThe DSRmessage and the set speed are dis-
played in the status area of the on-board com-
puter. DSR is activated but is not intervening
RYou are driving at between 11 mph (18 km/h)
and 28 mph (45 km/h).
RThe
DSRmessage is displayed in the status
area of the on-board computer. Also, the
speed 11 mph (18 km/h) flashes.
DSR is activated but is not intervening
RYou are driving faster than 28 mph (45 km/h).
RThe DSRmessage is displayed in the status
area of the on-board computer. Also, the ---
message is displayed for 5 seconds.
DSR is activated but is not intervening
RThe DSR---message is displayed in the sta-
tus area of the on-board computer.
There is a malfunction in the Electronic Brak-
ing System (EBS). Visit a qualified specialist
workshop.
Vehicles without steering wheel buttons
LOW RANGE is engaged:
RThe DSRsymbol is displayed in the on-board
computer.
RDSR can be activated.
DSR is activated
RThe DSRsymbol and the set speed are dis-
played in the on-board computer.
DSR is activated but is not intervening
RYou are driving at between 11 mph (18 km/h)
and 28 mph (45 km/h).
RThe DSRsymbol is displayed in the on-board
computer. Also, the speed 11 mph (18 km/h)
flashes.
DSR is activated but is not intervening
RYou are driving faster than 28 mph (45 km/h).
RThe DSRsymbol is displayed in the on-board
computer. Also, the ---message is displayed
for 5 seconds.
DSR is activated but is not intervening
RThe DSRsymbol is displayed in the on-board
computer. Also, the ---message is perma-
nently displayed.
There is a malfunction in the Electronic Brak-
ing System (EBS). Visit a qualified specialist
workshop.
Setting the speed whilst driving downhill
You can set the speed to between 2.5 mph
(4 km/h) and 11 mph (18 km/h) using the brake
Driving system s149
Driving an d parking
Z
Useful information
This Operator's Manual describes all models as
well as standard and optional equipment of your
vehicle that were available at the time of going
to print. Country-specific variations are possi-
ble. Note that your vehicle may not be equipped
with all of the described functions. This also
applies to systems and functions relevant to
safety.
Read the information on qualified specialist
workshops (
Ypage 27).
Important safety notes
GWARNING
If you are driving and reach through the steer- ing wheel to operate the adjustment knob,
you could lose control of the vehicle. There is
a risk of an accident and injury.
Only operate the adjustment knobs when thevehicle is stationary. Do not reach through the
steering wheel when driving.
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle 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 equip-
ment when the vehicle is stationary.
GWARNING
If the instrument cluster has failed or mal-
functioned, 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 immedi-
ately. 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 display only shows mes-
sages and warnings from certain systems. You
should therefore make sure your vehicle is oper-
ating safely at all times. If the operating safety of
your vehicle is impaired, stop the vehicle as
soon as possible, paying attention to road and
traffic conditions. Then consult a qualified spe-
cialist workshop.
Instrument cluster
Overview
:Instrument cluster on vehicles without
steering wheel buttons
;Instrument cluster in vehicles with steering-
wheel buttons
=Adjustment buttons fand g
?Reset button 9
AService button Ë(engine oil level check)
BMenu button 4
You will find a full overview of the instrument
cluster in the "At a glance" section (
Ypage 34).
The display in the instrument cluster is activated when you:
Ropen the driver's door
Rturn the key to position 2in the ignition lock
Rpress the 9reset button
Rswitch on the lights
160Instrument cluster
On-board computer and displays
The display switches off automatically after
approximately 30 seconds if:
Rthe key is in position0in the ignition lock.
Rthe vehicle lighting is not switched on.
Instrument lighting
When the lights are switched on, you can adjust
the brightness of the instrument cluster lighting
using the fand gbuttons.
XTo brighten: press thefbutton.
XTo dim: press the gbutton.
iVehicles with automatic headlamp mode:
the instrument lighting also adapts to auto-
matic headlamp mode.
Tachometer
!
Do not drive in the overrevving range, as this
could damage the engine.
HEnvironmental note
Avoid driving at high engine speeds. This
unnecessarily increases the fuel consumption
of your vehicle and harms the environment as
a result of increased emissions.
The red band in the tachometer indicates the
engine's overrevving range.
To protect the engine, the fuel supply is inter-
rupted when the red band is reached.
Outside temperature
You should pay special attention to road condi-
tions when temperatures are around the freez-
ing point.
On vehicles without steering wheel buttons
(
Ypage 162) and on vehicles with steering
wheel buttons (Ypage 166), the outside tem-
perature display is in the display.
Changes in the outside temperature are dis-
played after a short delay.
Speedometer
The speed can also be shown in the display. You
can find information on the digital speedometer for vehicles without steering wheel buttons
under (
Ypage 162) and for vehicles with steer-
ing wheel buttons under (Ypage 166).
iIn some countries, a warning sounds when
the vehicle reaches the maximum speed limit,
e.g. at 75 mph (120 km/h).
Trip odometer
XTo reset: make sure that the display is show-
ing the trip odometer if you have a vehicle with
steering wheel buttons (
Ypage 166).
XPress and hold the 9reset button until the
trip odometer is reset to 0.0.
Fuel gauge
:Fuel gauge on vehicles without steering
wheel buttons
;Fuel gauge on vehicles with steering wheel
buttons
=Fuel filler flap location indicator t: the
fuel filler flap is on the left-hand side. Fuel
filler flap location indicator u: the fuel
filler flap is on the right-hand side
?Reserve fuel warning lamp (Ypage 201)
DEF gauge
Vehicles without steering wheel but-
tons
If the DEF supply is less than 1.5 US gal (5.5 l),
the dEF Chkmessage appears in the display.
In addition, the yellow åDEF indicator lamp
lights up in the instrument cluster and a warning
tone sounds.
Instrument cluster161
On-board computer and displays
Z