Ignition lock and ignition switch
Ignition key positions
The engine con be started or turned off with
the ignition key.
Fig. 119 Igni tion switch pos it io n s
Position @
The ignition key can be inserted into the igni
tion switch in this position . This automatically
unlocks the steering column lock . When the
ignition key is removed, the steering column
lock is automatically locked
Q .&. .
Switching the ignition on/preheating (D
Turn the ignition key to this position and re
lease it. On vehicles with a d iesel engine*, the
system can preheat in this position .
Starting the engine@
The engine starts with the key in this position.
Major electrical loads are temporarily turned
off.
Ignition off@
Turn the ignition key to this position and re
lease it.
A WARNING ,~ ~
- Never remove the key from the ign ition
lock whi le the vehicle is moving. The
steering wheel will lock, causing loss of
control.
- If you have to leave your vehicle, even for
just a minute, always remove the ignition key and take it with you. This is especially
important if you are going to leave chil-
On the road 105
dren unattended in the vehicle. The chil
dren could start the engine or use other
vehicle controls. Unsupervised use of ve
hicle controls (for example, power win
dows) can cause ser ious personal inju
ries.
(D Note
- If the I symbol in the display blinks,
there is a malfunction in the electronic
steering column lock . Follow the instruc
tions in
Q page 33, i Steering malfunc
tion .
-If the . symbol in the display blinks,
there is a malfunction in the electronic
ignition lock . Fol low the instructions in
Q page 34, .Pe Ignition lock malfunction.
a) Tips
-If you release the ignition key in position
@, the key automatically returns to posi
tion (!).
- If you open the driver's door when the ig
nition is sw itched on, a buzzer sounds
and the message
Ignition is on appears
in the instrument cluster display. Please
switch the ignition off.
- T o prevent malfunctions in the ign ition
lock, remove any dirt or deposits from
the key bit so that they do not enter the
ignition lock.
Ignition key safety lock
The ignition key con only be removed when
the selector lever is in the "P" (Pork) position.
After turning off the ignition, the ignition key
can only be removed from the ignition lock
when the selector lever is in the "P" (Park) po
sition. After you have removed the key, these lector lever is locked and cannot be moved.
108 On the road
reached operating temperat ure -other
wise yo u risk engine damage.
- The eng ine cannot be sta rted by pushing
or towing the vehicle.
@ For the sake of the environment
Do not allow the engine to warm up with
t he vehicle stationary. Start driving righ t
away . In th is way you avoid unnecessa ry
emissio ns.
@ Tips
If you open the drive r's door when the ig
nition is switched o n, a buzze r sounds and
the message
Ignition is on appears i n the
instrument cluster disp lay. Please switch
the ignition off.
Switching engine off with the~
button
App lies to vehicles: with Convenience key
Fig. 122 Convenience key: ENGINE STOP butto n
.. Bring your vehicle to a complete stop.
.. Move the selector lever to the P or N posi-
t ion.
.. Pressthe !STOP !button
¢fig.122.
Press ing the I STOP I button once switches off
the engine and the ignition. If you press the
ISTOPI button again for more than 1 second,
the steering is locked, provided that the selec
tor lever is in t he P pos it ion
¢ & .
Emergency OFF function
If necessary, the engine can be switched off
with the selector lever in the
R, Dor S posi
tions . To do so, step on the brake peda l and press and ho
ld the !STOP ! b utton (vehicle
speed must be less than 6 mph/ 10 km/ h.
.&_ WARNING
-
-Never turn off the engine until the vehi-
cle has come to a complete stop.
- The brake booster and servotronic only
work when the engine is running. With
the ignition turned off, you have to apply mo re force when steeri ng or brak ing.
Since you cannot steer and stop normal
ly, t his can lead to acc idents and se rious
. . . in Juries.
- For safety reasons, you sho uld a lways
pa rk your vehi cle wit h the selector lever
i n P. O therwise, the vehicle could inad
ver ten tly roll aw ay.
- Afte r the eng ine has been switch ed off,
t he r adi at or f an can co ntinu e to run f or
up to 10 minu tes -even with the igni tion
switched off . It can also switch on again
after some t ime if the coolant tem pera
ture rises as the resu lt of a heat b uildup
or if the engine is hot and the engine
compa rtment is additionally heated by
the sun's rays.
(D Note
If the engine has been under heavy load
for an extended pe rio d, heat b uilds up in
the engine compartment after the engi ne
i s sw itched off -there is a r isk of damag ing
the e ng in e. A llow th e engi ne to run a t id le
fo r abo ut 2 minutes befor e switching it
off .
Driver messages in the instrument
cluster display
Applies to vehicles: with Co nvenience key
If a func tion is not present, a driver message
appears .
No key identified
This message appears when t he I STAR T I but-
ton is pr essed if there is no master key ins id e
the vehi cle or if t he system does not recogn ize
IJ,-
The system is activated when the brake pedal
is depressed
for a few seconds. For this, the
veh icle must be standing in uphill driving di
rection .
After releasing the brake pedal, the brake
power is held for a
brief moment to prevent
the vehicle from rolling back when starting. At
this time, you can easily begin to move your
vehicle.
A WARNING
- If you did not begin moving immediately
after releasing the brake pedal, under
certain circumstances, the vehicle would
begin to roll backward. Depress the
brake pedal immediately or engage the
parking brake.
- Should the engine stall, depress the
brake pedal immediately or engage the
parking brake.
- In order to prevent the vehicle from roll ing back unintentionally when starting in
stop-and -go traffic, keep the brake pedal
depressed for a few seconds before driv
ing
off.
- When you leave the vehicle -even if only
briefly -, switch
off the ignition and
make sure to remove the ignition key. Al
so engage the
parking brake to prevent
your vehicle from rolling unintentionally. This particularly applies if ch ildren are
left in the veh icle -danger of acc ident!
On the road 111
Cruise control
Switching the system on
The cruise control system makes it possible to
drive at a constant speed starting at 20 mph (30 km/h) .
®-
Fig. 124 Co ntro l l ever w ith set bu tton
Fig. 125 Disp lay : Se lected speed
.. Pull the lever to position @<=:> fig. 124 to
sw itch the system on .
.. Drive at the speed you wish to set.
.. Press button @to set that speed.
T he display
c::> fig . 125 will show the set speed.
The display may vary depending on the type of
display in your vehicle. The indicator light
tB;m~1~ (US model)/ . (Canadian model) will
also light up in the instrument cluster .
A WARNING
-Always pay attention to traffic even when
the cruise control is switched on . You are
always responsible for your speed and
the distance between your vehicle and
other veh icles.
- For safety reasons, the cruise control
should not be used in the city, in stop
and-go traffic, on twisting roads and
when road conditions are poor (such as
Adaptive cruise control Speed and distance
control system
Description
Applies to vehicles: with adaptive cruise cont rol
The adaptive cruise control driver assistance
program is a combined speed and distance
control system .
Fig . 126 Front bu mper: Pos itio n of r adar sen sor (not
vi sibl e from out side)
Adapt ive cruise control can he lp ma ke driv ing
more relaxed and less tiring , particularly dur
i n g long trips on interstates or other hig hways
that are genera lly st raight. The system can al
so ass ist in stop and go traffic .
The adaptive cruise co ntrol works within a
speed range be tween 0 and 95 mph (150 km/
h). Set ACC to maintain a constant , legal trav
el speed between 20 and 95 mph (30 -150
km/h) that is appropriate for prevailing traffic
conditions. Select a following distance to the
veh icle ahead and ACC will adjust your speed
to maintain that d istance down to a stop . At a
speed below 20 mph (30 km/h), the min imum
speed setting of 20 mph (30 km/h) will be se l ected automati ca lly.
Adaptive cruise control has technical limita
tions that you must know, so p lease read th is
section carefully , understand how the system
wo rks and use it properly at a ll times.
How does it work?
You can operate the adaptive cruise control
using the lever on the steering wheel column
c::> page 116, How is the speed stored? and
Ad apti ve crui se control 11 3
c::> page 118, How is the distance (time inter
val) set? .
Driver information
Important information is brought up in the
speedomete r and in the instr ument clus ter
display as the vehicle is being driven
c::> page 120, Driver informat ion .
What is important for you to know
The adaptive cru ise contro l is set w ith system
spe cified lim its; that is, as a driver, you will
have to adjus t the speed and distance to the
vehicle ahead in some instances
c:> page 124,
Driver intervention prompt
and c::> page 125,
System limitations.
A WARNING
Imp roper use of the adaptive cruise con
trol can cause collisions, other accidents
and serious personal injury.
- Always remember that the adaptive cru ise contro l has limits -it will not slow
the vehicle down or ma inta in the set d is
tance when you dr ive towards an obsta
cle or someth ing o n or nea r the road that
is not movi ng, such as ve hicles stopped
in a tra ffic jam, a sta lled or d is ab led vehi
cle.
- Always remembe r that the adaptive
cru ise con tro l canno t detect a vehi cle
that is driving towards yo u in your traffic
lane and that it cannot detect narrow ve
hicles suc h as motorcycles and bicycles .
- Never drive a t speeds that are too fast
for traffic, road and weather conditions .
- Never fo llow a vehicle so closely that you
cannot stop yo ur vehicle safely. The
adapt ive cruise control cannot s low or
brake the vehicle safely when yo u follow
a nother vehicle too close ly. Always re
member that the adaptive cruise control
has a braking power t hat is o nly about
30% of the veh icle's maxim um braking
ab ility. The automat ic bra king f unctio n
cannot bring the vehicle to a s udden o r
-
emerge ncy stop . Always be p repared to IIJ,.
that must have a certain size. The system re
sponds only after the distance measurement has been made. If a measurement is not pos
sible, the system cannot respond and w ill not
react to a vehicle or someth ing else up ahead.
Open road
When the road is clear, the adaptive cruise
contro l works like cr uise control. It maintains
a constant target speed specified by the driv
er.
Driving in traff ic
If a slowe r vehicle driving ahead is detec ted,
the adaptive cruise contro l decelerates (within
the limits of the system)
¢ page 124, Driver
intervention prompt
and c:> page 125, System
limitations
to its speed and after adjust ing,
tr ies to maintain the set distance from the ve
h icle ahead. The vehicle may temporarily drive
slower than the set speed while adjust ing
¢ & in Description on page 113 .
If the vehicle in front accelerates, adaptive
cruise control also accelerates up to the speed
that you have set.
If the vehicle ahead slows to a stop, ACC will
slow your vehicle down and to a complete
stop if this is possible w ith in the system's lim
its and capabilities . ACC will not make an
emergency stop. The text message
ACC off :
manual c ontrol!
appears in the instr ument
cluster display . Once the veh icle stops, you
must depress the brake pedal to prevent the
vehicle from moving forward or "creeping". Depressing the brake pedal turns
off ACC.
When the veh icle ahead accelerates you can
reactivate ACC
¢ page 118, as soon as your
ve hicle has reached a speed of 1 mph (2 km/
h) .
Situ ation s re quiring dri ver int ervention
In some s ituations you w ill have to use the
footbrake to s low the vehicle down in order to
keep a safe distance from vehicle in front of
you or to avo id a rear-end coll is ion. In this sit
uation, a symbol appears and a warning tone
sounds
¢ page 124.
Ada pti ve crui se control 115
Passing another vehicle
If you move in to the passing lane and no ve hi
cle is detected ahead, the adaptive cr uise con
trol acce le rates to the speed you have set and
maintains it.
Overr iding ACC
You can in cr ease yo ur speed at a ny time by
stepping on the accelera tor ped al. A fter you
release the accelerator peda l, the system ad
justs back down to the speed you prev ious ly
set .
Reducing stopp ing distance
If the radar sensor detects that the d istance
to the vehicle a head is less than de fined m ini
mum distance, the brakes are automatically
prepared fo r emergency braking by the driver .
The brake pads are moved very close to the brake d iscs without actually braking the vehi
cle. This brake assistant feature reacts more
quick ly to the dr ive r's brak ing, and also works
when adapt ive cruise control is off . The stop
ping distance is reduced as a result of th is ad
vance brake p reparation . Th is fun ction does
not perform any emergency b rak ing mane u
vers by itse lf; the dr iver mus t always apply the
brakes.
A WARNING
If ACC initiates a braking maneuver, the brake pedal w ill be retracted. Inter ference
with the brake peda l can prevent ACC from
slowing the veh icle down and cause a
crash and serious personal injury.
- Never put anything in the driver's foot
well or let anyth ing fall into it. An object
in the driver's footwe ll can interfe re with
the peda ls and prevent the acce le rator
from being used to override ACC or pre
vent ACC from being switched off when
the brake pedal is depressed and also
prevent the vehicle from being slowed
down or stopped .
- On ly use floor mats that keep the area
around the peda ls free and that can be
securely fastened to the footwell .
-
a short time in the Information line
¢ page 122.
@ Tips
For safety reasons, the stored speed is
erased when the ignition or the ACC is
turned off.
Changing stored speed
Applies to vehicles : with adaptive cruise co ntrol
The speed can be changed without touching
the accelerator or brake pedal .
Fig. 130 Contro l leve r: Changing speed
Inc re as ing speed
• Press the lever briefl y upwards 0
9 fig. 130. USA models: the speed increases
by about 2.5 mph. Canada models : speed
will increase by one mark on the speedome
ter sca le .
• Press the lever upwards
0 and hold it. As
long as you ho ld the control switc h down,
the lig ht diode display in t he speedome ter
L E D display in the speedometer moves for
ward and the speed is increased.
R educing speed
• Press the lever briefly downwards Q. USA
models: the speed decreases by 2.5 mph .
Canada models: speed w il l decrease by one
mark on the speedometer scale.
• Press the lever downwards
O and hol d it.
As long as you hold the control sw itch down,
the lig ht diode display in the speedometer
LED display moves backward and the speed
is reduced .
After releasing the control switch, the system regulates the speed to the va lue just set.
Ad apti ve crui se control 11 7
After each adjustment, the newly-set speed is
shown for a short time in the Information line
9page 122 .
_& WARNING
Improper use of the adaptive cruise con
trol features and inattent ion can lead to an
accident causing ser ious personal injury.
- It is dangerous to use the "RES UME" fea
ture when the prev iously set speed is too
high for existing road, traff ic or weather
conditions.
- Always read and heed the information
and WARNINGS
¢.&. in Description on
page
113 .
(D Tips
You can increase your speed at any time by
stepp ing on the accelerato r pedal. After
you release the acce lerator pedal, the sys
tem adjusts back down to the speed you
p reviously set . A new desired speed can be
stored a t any time by press ing the
!SET I
button 9page 116, fig. 12 9.
-
118 Adaptive cruise control
Turning adaptive cruise control off
temporarily
Applies to vehicles: with adaptive cruise co ntrol
In some situations it makes sense to turn
adaptive cruise control off temporarily.
®
Fig. 131 Con tro l lever : Turning adapt ive cruise co ntro l
off tempo rarily
Fig. 132 D isplay in the speedomete r
Turning control off temporarily
" To shut off the control with the save func
t ion, either depress the brake pedal, or
" Press the lever in the direction of the arrow
@qfig .131 .
How is the distance (time interval) set?
Applies to vehicles: with adaptive cruise co ntrol
Distance can be set in four stages.
Fig. 133 Contro l lever: Setting d istance
Reactivating control
" To resume the speed and distance control,
release the brake pedal and press the lever
in the direction of the arrow@.
Display in the speedometer
@ Current vehicle speed~ fig. 132
@ Saved speed
As long as a speed is saved the set desired
speed will be displayed in the LED display in
the speedometer by one or two illuminated
red light diodes . When the control function is
resumed the adaptive cruise control acceler
ates to reach the desired speed if no slower
vehicle ahead is detected.
&_ WARNING
Improper use of the adaptive cruise con
trol can cause collisions, other accidents
and serious personal injuries.
- Never resume the stored speed if the
speed is too high for prevailing road,
traffic or weather conditions .
(0 Tips
When the system is turned off temporari
l y, the speed set at that time is stored.
Increasing distance
-
" Push the slider switch once to the right 0
q fig. 133 . The distance current ly set is
shown for 3 seconds in the instrument clus
ter display.
" Push the slider switch
again to the right 0
to increase the distance by one step. ..,.
Redu cing distance
"' Push the slider sw itch onc e to the left Q.
The distance currently set is shown for 3
seconds in the instrument cluster display.
"' Push the slider switch
again to the left 0
to decrease the distance by one step.
The distance at which the adaptive cruise con trol follows a vehicle in front is determined by
time interva ls. A time interval to a vehicle in
front is estab lished and maintained. Th is pro
duces a speed-dependent interval. The higher
the speed, the greater the safety interva l in
feet (meters)
¢ ,&. .
DISTANCE 1 Ada
pti ve crui se control 119
For example, if the interval DISTANCE 3 is
set, a vehicle in front is fo llowed at a
time in
terval
of 1.8 seconds.
For a speed of
50 mph (80 km /h ) this wo uld
be equivalent to a distance of
131 feet
( 4 0 meter s)
to the vehicle in front.
T he distances given here are nom inal va lues .
T he vehicle speed may exceed or fall shor t of
these target speeds, depending on the driving situation and the driving style of the vehicle
ahead .
DISTANCE 2 DISTANCE 3 DISTANCE4
Symbol c;:::::::, _ c;:::::::,_ - - c;:::::::, _ - c;:::::::, _ - c;:::::::, _ - - c;:::::::, _ c;:::::::,_ - - _c;:::::::,
T ime interval
Dynamics
I Distance at 25 mph
(40 km /h )
Di st a nce at 50 mph
(80 km /h)
Distance at 75 mph
(120 km /h)
1 second 1.3 seconds
Sporting Standard
36 Feet (11 Me-
JI 46 Feet (14 Me-
ters) ters)
-.
72 Feet (2 2 Me- 95 Feet (29 Me-
t ers) ters)
108 Feet (33 144 Feet (44 Meters) Meters) 1.8 seconds
Standard
66 Feet (20 Me ters)
-
131 Feet (40 Me ters)
197 Feet (60 Meters) 2.3 seconds
Comfortab le
82 Feet (25 Me- ·
ters)
1 67 Feet (51
Meters)
249 Feet (76 ·
Meters)
H ow your vehicle responds when accelerating
and following other vehicles w ith ACC operat
i ng can be adapted to your personal wishes
through diffe rent driving programs. Depend
ing on w hich driving p rog ram and wh ic h dis- tance you choose, your vehicle will respond
more dynamically or more comfortably when
acce lerat ing and braking . The setting is se
lected through the MM I menu
adapt ive cruise
contro l¢ page 124, MMI settings.
Settings DISTANCE 1
Symbol for time inter·
val ~-
c;:::::::,_ -
Support fo r: Bumper-to-
Re sponse in "dynam
ic " driving program
Respon se in "stand
ard " driving program
Response in "comfort "
driving program
bumper traffic,
b risk driving
1
2
3
DIS TANCE 2
~ __ c;:::::::,_
Bumper-to-
bumper traffic,
"keep ing pace"
comfortably
2
3
4
(dynamic) 1 -- ---2 ----- 3 --- -- 4 ----- 5 (comfortable)
DISTANCE 3 DISTANCE4
- - -c;:::::::, ~----c;:::::::,
Bumper-to- Secondary roads,
bumper traffic, trailer operation
"keeping pace"
comfortably
2 3
3
4
4
5