
_________________________________________________ O _n_ t_h _e _ r_o _a _d __ ftllll
- Manual transmission : K eep the clu tch pedal p ressed
d own longer, or
- Press the lever i nto position
0 (not clicked into place)
=> page 115, fig. 120, or
- Drive for longer t han 5 minutes at more than 5 mph
(10 km/h) above the stored speed.
Switching off completely
- Pre ss lever into posit ion 0 (clicked into place), or
- Switch t he igniti on o ff.
The speed you saved wil l be retained if the cruise control has been
switched off temporarily . To resume the saved speed, let up on the
brake or clutch peda l and pu ll the lever to position
G) .
The saved speed wil l be erased after turning the ignition off .
& WARNING
You should only resume the saved speed if it is not too high for
exi sting traffi c condition s. Otherwi se you ri sk an accident . •
Controls and equip
ment
I • •

-Adaptive cruise control .._ _ ______,:,.._ _______________________________________ _
Adaptive cruise control
Speed and distance control system
Applies to vehicles: with adaptive cruise contro l
Description
The adaptive cruise control driver assistance program is
a combined speed and distance control system.
Fig . 122 Front
bumper: Position of
radar sensor
Any speed between about 20 mph (30 km/h) and about 95 mph
(150 km/h) can be set and held with the adaptive cruise control. The
system also regulates a pre-set distance from the vehicle ahead
within the limits of the system described.
Driving can be more relaxed, particularly on long trips on interstates
or on other highways that are generally straight.
How does it work?
You can operate the adaptive cruise control using the lever on the
steering wheel column:::::,
page 121, "How is the speed stored?" and
~ page 123, "How is the distance (time interval) set?".
Driver information
Important information is brought up in the speedometer and in the
instrument cluster display as the vehicle is being driven
=:> page 124, "Driver information".
What is important for you to know
The adaptive cruise control is set with system -specified limits, that
is, as a driver, you will have to adjust the speed and distance to the
vehicle ahead in some instances~
page 128, "Driver intervention
prompt" and~
page 130, "System limitations".
& WARNING
Improper use of the adaptive cruise control can cause collisions,
other accidents and serious personal injury.
• Never drive at speeds that are too high for traffic, road and
weather conditions.
• Never follow the vehicle in front so closely that you cannot stop
your vehicle safely. The adaptive cruise control cannot brake the
vehicle safely when you follow another vehicle too closely. Always
remember that the adaptive cruise control has a braking power
that is only about 25% of the vehicle's maximum braking ability,
the automatic braking function cannot bring the vehicle to a stop.
• Never use adaptive cruise control on roads where you cannot
drive safely at a steady speed, including city, stop-and-go or heavy
traffic, on winding roads or when road conditions are poor (for
example, on ice, gravel , in fog, heavy rain or on wet roads that
increase the risk of hydroplaning).
• The radar sensor's
vision can be reduced by rain, snow and
heavy spray. This can result in vehicles driving ahead being inade
quately detected or, in some circumstances, not detected at all. If
necessary, take action yourself! ..,

_______________________________________________ A_ d_ a ---=- p_t_ i_v _e_ c_ r_ u_ i_ s _e_ c_ o_ n_t_ r _o _ l __ llll
& WARNING (continued)
• Always turn off adaptive cruise control when entering turn
lanes, highway exit lanes and construction zones or similar situa
tions because the vehicle will automatically accelerate to the
stored speed.
• Never rest your foot on the accelerator pedal, especially when
the adaptive cruise control is being used because doing so will override the braking function and prevent the brakes from being
applied by the system when it detects a situation when the brakes
must be applied.
• Always remember that the adaptive cruise control has limits -
it does not react when you drive towards an obstacle or some
thing else on or near the road that is not moving, such as vehicles stopped in a traffic jam, a stalled or disabled vehicle.
• Always remember that the adaptive cruise control cannot
detect a vehicle that is driving towards you in your traffic lane and
that it cannot detect narrow vehicles such as motorcycles and
bicycles .
[ i] Tips
• For safety reasons, the stored speed is deleted when the ignition
is turned off.
• The Electronic Stabilization Program (ESP) and the Anti -Slip
Regulation (ASR) cannot be deactivated when the adaptive cruise
control is switched on. If the ESP and the Anti -Slip Regulation (ASR)
has been deactivated and you then switch on the adaptive cruise
control, the ESP function will also be activated automatically.
• Damage caused by accidents (e.g. if the vehicle is damaged
when parking) can affect the radar sensor settings. This can cause
the system to malfunction or switch off completely.
• The radar sensor cover is heated. In winter conditions, you
should still check before driving to make sure it is free of ice and
snow. If necessary, clean the area near the radar sensor carefully
=>
page 118, fig. 122.
Controls and equip
ment
• To ensure that the radar sensor is not blocked, foreign objects
(e.g. stickers, add -on parts) must not cover the area near the radar
sensor=>
page 118, fig. 122. The area near the radar sensor must
not be painted, either.
• For Declaration of Compliance to United States FCC and Industry
Canada regulations =>
page 342. •
Applies to vehic les : with adaptive crui se cont rol
How does adaptive cruise control work?
Vehicles traveling ahead are detected with the aid of a
radar sensor.
I==;.===============-. ~
~
ll!
Fig. 123 Radar sensor
measurement range
A radar sensor is built into the front of the vehicle=> fig. 123, which
is subject to certain system limits=>
page 130. Stationary objects
are not taken into consideration. The system is intended to measure
the distance to reflective surfaces. The system responds after the
distance measurement has taken place. If a measurement is not
possible, the system does not respond.
Open road
When the road is clear, the adaptive cruise control works like cruise
control. It maintains a constant target speed specified by the driver .~
I • •

• ..__A_ d_ a-'- p_t _iv _ e_ c_r _u _ i_s _e _ c_o_ n_t _r _o _l _____________________________________________ _
Driving in t raffi c
If a vehicle driving ahead is detected, the adaptive cruise contro l
decelerates (within the limits of the system)~
page 128, "Driver
interven tion prompt" and~
page 130, "Sys tem limita tions" to its
speed and after adjusting, tries to mainta in the set d istance from
the vehicle ahead . The vehicle may temporarily drive slower than
the set speed while adjusting~
& in "Description" on page 118 .
If th e vehicle in front acc ele rates, adaptive cruise control also acce l
e rates up to the speed that you have set.
Situ ation r equiring d river interve ntion
In some s ituations you will have to use the foot brake to s low the
vehic le down in order to keep a safe distance from vehic le in front
of you or to av oid a rear -end c ollisi on. I n this s ituati on, a sy mbol
appears and a warning tone sounds:::::,.
page 128.
Pas sing another vehicle
If you move into the passing lane and no vehicle is det ected ahead ,
the adaptive cr uise control acce lerates to the speed you have set
and maintains it.
Override
You can increase your speed at any time by stepping on the acceler
ator pedal. After you re lease the acce lerat or pedal, the system
adjusts back down to the speed you previously set .
[ i ] Tips
Please note that the amount of acceleration the adaptive cruise
con tro l uses depends on the Dista nce se tting selec ted . DISTANC E 1
gives you acce leration that is dynamic and sporty . D IS TA NCE 4, on
the o ther hand, gives more modera te acce leration . For more infor
mation about the time intervals:::::,.
page 12 3, "How is the distance
( t ime in terval) set?".
• Please note that if the adaptive cruise control has begun braking
th e vehicle and the driver chooses to brake the veh icle additional ly , the brakes may feel "hard".
This is simply due to the pressure build
up of the initial braking.
• Adaptive cruise control is switched off after pressing the foot
b rake . The speed sav ed up thi s poi nt can be resumed. T o re sume the
saved speed, release the brake pedal and pu ll the control lever
:::::,. page 122, "Turning a daptive cruise c ontro l off temporarily ".•
Ap plie s to v ehic les: with a daptiv e c ruis e cont rol
Switching the system on and off
F ig . 12 4 Control l ever:
Swit chi ng on and off
Switching the system on
- Pull the leve r to pos ition
(D ~ fig. 1 24.
Switching the system off
- Press the le ver to posi tion
0 (latch ed). •

Adaptive cruise control -____________ ____,_ __ ___.
Applies to vehic les : w ith ada ptive cru ise cont rol
How is the speed stored ?
Fig. 125 Control lever:
Storing speed
With the system switched on the speed is stored as follows:
- Drive at the speed you want. The speed must be between
20 and 95 mph (30 and 150 km/hl.
- Press the
I SET I button ~ fig. 125 to store the desired
speed.
After the I SET j button is released , the current speed is stored and
maintained .
The saved speed is now shown in the LED display in the speedom
eter by one or two illuminated red light diodes=>
page 125. At the
same time, the saved spe ed is also shown for a short time in the
Information line::::>
page 127.
[ i J Tips
For safety reasons, the stored speed is deleted when the ignition is
turned o ff . •
Con tro ls and eq uip
ment
A pp lies to veh ic les: with ada ptive cru ise cont rol
Changing stored speed
The speed can be changed without touching the acceler
ator or brake pedal.
Increasing speed
,... 0
~
ill
Fig . 126 Control lever:
Changing speed
- Press the lever briefly upwards G) ~ fig. 126. USA
models: the speed increases by about 2.5 mph . Canada
models : speed will increase by one mark o n the speed
ometer scale.
- Press the leve r upwards
0 and hold it. As long as you
hold the control switch down , the light diode display in
the speedometer LED display in the speedometer moves
forward and the speed is increased .
Reducing speed
- Press the lever downwards briefly Q. USA models: the
speed decreases by 2.5 mph. Canada models: speed will
decrease by one mark on the speedometer scale. _,.
Vehicle care I I irechnical data

-Adaptive
cruise control "----'-----------------
- Press the lever downwards Q and hold it. As long as you
hold the control sw itch down, the light diode dis play in
the speedometer L ED display moves backward and the
speed is reduced.
After releasing the c ontro l switch, the system regulates the speed to
the value just set .
After each adjustment, the newly -set speed is shown for a short
t ime in the Information line => page 127.
[ i ] Tips
You can increase your speed at any time by stepping on the acceler
ator pedal. After you re leas e the accel erator pedal, the system
adjusts back down to the speed you previously se t.
A new desired
spe ed can be stored at any time by pressing th e [SET] button
~ page 121, fig. 125. •
A pplies to v ehi cles : with ada ptive cruis e contro l
Turning adaptive cruise control off
temporarily
In some situations it makes sense to turn ad aptive cruise
control off temporarily.
Fig . 127 C ontrol l ever :
T urnin g ad aptiv e
c rui se con trol off
temporari ly
Turning control off temporarily
- To shut off the control wit h the save function, either
depress the brake pedal, or
- Press the lever in the direction of the arrow
0 =} fig. 127 .
Reactivating control
- To resume t he save d speed, re lease t he brake peda l and
p ress the lever in the directio n of the arrow
G) .
& WARNING
Improper u se o f the adaptive crui se control can cau se collision s,
other ac cidents and serious personal injur ie s. Never r esume the
s tored speed i f the speed i s too hig h for prevail ing road, traffic or
weathe r cond iti ons.
[ i ] Tip s
When the system is turned off tempo rari ly, the speed stored at the
time is retai ned .•

Adaptiv e c ruis e co ntrol -
--------------=-----
@ Displ ay i n th e instrum ent clu ste r
In disp lay area @information from the navigation system * and the
trip computer is displayed in addi tion to informa tion about adaptive
cruise cont rol.
You can select among the different informat ion by repeated brief
taps on th e [
RESET) button on the w indshi eld wiper lever
=:> page 25 , "Operation" .
© Sta tus in dica tor
The information in area © is not displayed permanently. Informa
tion is displayed only if you set or change the sp eed setting , change
the time interval, when messages are disp layed or if the adaptive
cruise control is turned off for safety reasons. •
Applies to veh ic les: w ith ada ptive cru ise cont ro l
Speedometer and indicator light display
----
- -
- -
@ ®
Desir ed speed
- -
--
Fig . 130 I nstrum ent
c lus ter : Ind icato r ligh t
The desired speed set by the driver is displayed by a red LED in the
LED display in the speedometer.
If the desired speed was set between two lines on the speedometer
using th e
[S ET) button , the two closest light diodes will come on
=>
page 124 , fig. 129 .
Controls and equip
ment
The system al lows only speeds from 20 to 95 mph (30 to 150 km/h)
to be set. This speed range is faintly i lluminated in the speedometer
(LED ligh ts).
Indicator light s (symbols )
• © Open road : The indicator l ight shows that adaptiv e cruise
control is active and that no object is ahead o f the vehicle. A stored
speed requested is maintained .
• @ Driv ing in traffic : The indicator light indicates tha t an objec t
has been detected traveling in front. Your speed is adjusted
according to the speed of the vehicle in front . The adap tive cruise
control acce lerates and brakes automatical ly within the system's
operat ion parameters.
• ©
Driver inter venti on prompt : The red flashing warning l ight
means
Reque st for driver t o assume control. You as the driver must
slow the vehic le with the foot brake. The symbol tells you that the
adaptive cr uise control is not able to slow the vehicle down enough
to keep a enough distance to the vehicle in front of you . An warning
tone wi ll a lso sound when the symbol appears . For more informa
tion about the driver intervention prompt =>
page 128.
[ i ] Tip s
• If you use the acce lerato r to go faster than the speed of the
object ahead of you, the
dri ver intervent ion prompt wi ll not be
accompanied by a wa rning signal.
• I f the speed you previous ly set is exceeded, the indicator light in
the speedomete r wi ll switch off. •
I • •

• ..__A_ d_ a-'- p_t _iv _ e_ c_r _u _ i_s _e _ c_o_ n_t _r _o _l _____________________________________________ _
Applies to ve hicles : w it h ada ptive c ruise cont rol
Display in the instrument cluster
F ig . 13 1 Di spl ay in the
in strum en t c luster
Scroll through the avai lab le information displays by briefly tapping
the
I RESET] button at the end of the windshield wiper lever. You can
select information from the trip computer, navigation system* or
adaptive cruise control.
@ Vehicle symbol
@ Dis tance
© Status
@ Veh icle sy mbol
The vehicle symbol indicates whether the system has detected an
object traveling in front.
• Vehicle outl in e: Open road, no vehicle ahead .
• Whit e vehi cle : A vehicle is detected ahead .
• Red vehicle: Request for driver to assume cont ro l.
@ Distance
Using the arrows and scale, you can detect how far it is to the
vehic le in front of you .
• Open road: No arrow appears when the vehicle is on an open
road and there is no vehicle ahead .
• Driving in traff ic: If a vehicle is detected ahead, the arrow moves
on the scale . The green area represents the d istance set . When
approaching s lowly, the arrow moves from the
gray zone to the
green zone on the scale .
• Reque st for driver to as sume control : When approaching rapidly,
the arrow serves as an early warning signal. If the distance selected
is exceeded or possibly not reached, the arrow
moves into the red
z one on the scale. In certain driving si tuations, you as the driver will
have to take action ::::,
page 128, "Driver interventio n promp t" .
© Status
• The tex t ACC OFF appears in white letters when adaptive cru ise
contro l is turned off.
• T he text
ACC AVAILABL E appears in white letters when the
system is turned on but no desired speed has been set .
• The text
OVE RRIDE appears in white letters when you exceed the
desired speed by accelerating .
• The text
DISTANCE! appears in red letters when the interval to a
vehic le trave ling ahea d is too short and you have to slow y our
vehic le additionally with the foot brake .
• The text messages
DISTANCE 1 to DISTANCE 4 appear in green
letters to indicate the time interva l you have se t and adaptive cruise
co ntrol is in ma nagement mode .
• I f the driving program "standard" is replaced by "comfor t" or
" d ynamic" usi ng the MMI*, the a bove text message is supp le
mented by an appropriate prompt , e.g .
DI STANCE 1 DYN . •