72 On the road
By pressing the I STAR T ENGINE ST OP I button
without depressing the brake peda l, the igni
tion is on and switched
off by pressing it
again .
After a cold engine is started, the re may be a
brief period of increased noise because oil
pressure must first bu ild up in the hydraulic
va lve adjusters. This is normal and not a cause
f or concern.
If the engine should not start immediately,
the starting process is automatically stopped
after a short time . Repeat starting procedure.
Start-Stop-S ystem *:
When you stop and the Start-Stop-System*
turns
off the engine, the ignition still remains
switched on.
- If you press the I STAR T ENGINE STOPI but
ton now, the ignition wi ll be switched
off.
T he engine will not start ¢ page 78 .
-Make sure tha t th e ig nit ion is swi tched off
before ex iting the vehicle.
Sw itching the ignition /engine off
automat icall y*
The fo llow ing applies to vehicles with Start
Stop -System*: to prevent the battery from
draining, the ignition and the engine wi ll
switch
off automatically under the following
conditions :
- T he vehicle has already been dr iven.
- T he d river's door is opened.
- T he driver's seat be lt is removed.
- The brake pedal is not pressed down .
- The veh icle is sta tionary.
In t his case, the activated low beam w ill be re
p laced by the side marker lights. The side
marker lights will switch
off after a certain pe
riod of time or when you lock the vehicle.
Driver m essage in the in strument clu ster
di spl ay
P ress b rake pedal to start engine
This message appears i f you press the
I S TAR T ENGINE STOP ! button to start the en
gine and do not depress the brake peda l. The engine can only be started if the brake pedal
is depressed.
!I C
o nveni ence key: I s ke y not in th e vehi
cle?
T h is message appears along with the !I sym
bol if the master key is removed from the ve
hicle with the eng ine runn ing.
It is in tended
to rem ind yo u (e.g . when chang ing dr ivers)
not to continue the journey without the mas
ter key.
If the master key is no longe r in t he ve hicl e,
yo u canno t swi tch on the igni tion after stop
ping the engine and you also cannot start the
engine again. Moreover, you cannot lock the
vehicle from the outside with the key.
Tu rn off ignition before leav ing car
This message appears if the drive r's door is
opened wh ile the ign ition is switched on. Al
ways swi tch off the ignit io n if you a re leav ing
the vehi cle. See also
¢ page 72 .
Shift to P, otherwi se vehicle can roll away.
Doors do not lock if lever is not in P .
This message appears for safety reasons
along with an audible warning tone if the P
selector lever position is not engaged when
stopp ing the eng ine with t he
I S TAR T ENGI NE ST OP I but ton. Select the P se
l ector lever posi tion. Otherwise the vehicle
could roll and it cannot be locked.
Ke y not r ecogni sed . Hold back of ke y again st
marked ar ea . See owner' s manual.
If the indicato r light turns on and this mes
sage appears, there is a malfunct ion
Q page 74.
Turn off ignition b efore leaving car
This message appears if the driver's door is
opened wh ile the ignition is switched on. Al
ways switch off the ignit ion if you a re leav ing
the vehicle. See also
¢ page 72 .
Shift to P and turn off ignition before leav-
ing car, otherwise vehicle can roll awa y
This message appears if the drive r's door is
opened while the ignition is switched on and
jll,,
the sel ector lever is not in the P position. Shift
the s ele ctor lever into th e P position and
sw itch
off the ign ition when you ex it the vehi
cle . Otherwise the vehicle could ro ll. See a lso
c::;,page
72.
St eeri ng lock
The steering locks when you turn the engine
off using the I S TAR T ENGINE STOP I button
and open the d river 's door. The locked steer
ing helps prevent vehicle theft.
A WARNING
- Never allow the engine to ru n in confined
spaces -dange r of asphyxiation .
- Never turn
off the eng ine until the vehi
cle has come to a complete stop .
- The brake booster and power steer ing
only work when the engine is running . If
the engine is
off, you have to use more
force when steering or braking . Because
you cannot stee r and brake as you usua l
ly wou ld, this could lead to crashes and
serious injur ies.
(IT),) Note
- Avoid high eng ine rpm , fu ll th rottle and
heavy engine loads unti l the engine has
r eached operating temperat ure -ot her
wise yo u risk eng ine dam age.
- The eng ine cannot be sta rted by pushing
or tow ing the veh icle.
-If the engine has been under heavy load
fo r an ex tended pe riod, hea t builds up in
the engine compartment after the en
gine is switched
off -there is a risk of
damaging the engine. Allow the engine
to run at idle for about 2 m inutes befo re
switch ing it
off.
@ Tips
- If you open the driver's door with the ig
nitio n on, a buzzer sounds and the mes
sage
Ignition is on appears in the instru
ment cluster disp lay. Switch the ign it ion
off .
- If you leave the vehicle with t he ignit ion
switched on, the igniti on will switch
off
On th e ro ad 73
after a cer tain per iod of t ime. P lease
note that electrical eq uipment such as
exterior lights will sw itch
off as well
when that happens.
Stopping the engine
... Bri ng your ve hicle to a complete stop.
... Move the se lector lever to the P or N posi
tion .
... Press the
I STA RT ENGINE ST OP ! button
¢fig. 74 .
Emergency off
If necessary, the engine can be switched off
with the selector lever in the R or D/S posi
t ion . The eng ine stops if you press the
I S TAR T ENG INE S T OPI button at speeds below
6 mph (10 km/h) and press the b rake peda l.
A WARNING
-Never turn off the en gine until the vehi
cle has come to a complete stop .
- The brake booster and p owe r stee ring
only work when the eng ine is r unning .
If
the engine is off, you have to use more
force when steering or braking. Because
you cannot steer and bra ke as you usual
ly would, this cou ld lead to crashes and
serious inju ries.
- For safety reasons, you sho uld a lways
park your vehicle w it h the selector lever
in P. Otherwise, the vehicle could inad
vertently roll away .
- After the eng ine has been switched
off,
the radiator fa n can cont in ue to run for
up to 10 minutes - even with the ignition
sw itc hed
off. It can also sw itch on again
afte r some t ime if the coo lant tempera
ture rises as the resu lt of a hea t buildu p
or if the engine is hot and the engine
compa rtment is additionally heated by
the s un's rays .
(D Note
Do no t stop the eng ine immedia tely after
hard o r extended driving . Keep the engine
.
Emergency brake function
An emergency brake ensures that the vehicle
can be slowed down even if the
normal brakes
fail
c::> pag e 76, Emergency broking .
Indicator light s
-If the par king b rake is closed w ith the igni
t ion
s witched on the indicator lights come
on - (USA models)/ . (Canada models)
in the instrument cluster and in the switch.
- If the par king brake is closed w ith the igni
tion
s witc hed off the indicator lights come
on - (USA models)/ . (Canada models)
in the instr ument cluster and in the switch
for about 20 seconds.
A WARNING
Do not press the accelerator peda l inadver
tently if the vehicle is stat ionary but the
eng ine is running and a gear is selected .
Otherw ise the vehicle will start to move
immediately and cou ld result in a crash .
(D Note
If the symbol . in the display or the ind i
cato r light
1111 (USA models) . (Cana
da models) in the instrument cluster flash
es , the re is a malfunction in the bra ke sys
tem. Please refer to t he detai led descr ip
t ion of the indicator lights ¢
page 15.
- If the indicato r light - (USA mod-
els) . (Canada mode ls) or
IIJ t ur ns
on, there may be a malfunction in the
parking brake
r=> page 16.
@ Tips
-You can apply the pa rking brake at any
time -even w ith the ignition swi tched
off. The ignition must be on in order to
release the parking brake.
- Occasiona l noises when the parking
brake is applied and re leased are norma l
and are not a ca use for concern .
- When the vehicle is parked, the parking
brake goes thro ugh a se lf-test cycle at
r egular intervals . Any assoc iated noises
are norma l.
On the ro ad 75
Parking
Parking
~ Stop the vehicle with the foot brake .
~ Pull the switch(®) to apply t he pa rking
bra ke .
~ Select the P se lec to r lever posit ion
r=> poge 105.
~ Turn the engine off c::> &_.
In addition on inclines and grades
~ Tu rn the steering wheel so that yo ur vehicle
w il l roll aga inst the c urb in c ase it shou ld
s tart to move .
T he pa rk ing brake activates automat ica lly
when you swi tch the ign ition off. This does not
happe n if you se lect the N selector lever posi
tion or switch the parking off with the~ but
ton before switching the ignition off .
A WARNING
-When you leave your vehicle -even if on
ly briefly -always take the ign it ion key
with you . This applies particularly when
children remain in the vehicle. Othe rwise
the children could start the engine, re lease the parking brake o r operate elec
trica l equipment (e.g. power wi ndows).
There i s the r is k of an accident.
- When the veh icle is locked, no one -par
ticularly not childre n should rema in in
the vehicle . Locked doors ma ke it mo re
difficult for emergency wo rke rs to ge t in
to the vehicle -putting lives at risk .
Starting from rest
The starting assist fun ction ensures that the
parking broke is released automatically upon starting .
Stopping and applying parking brake
~ Pull the switch(®) to apply the pa rking
bra ke .
76 On the road
Startin g and automati cally r ele a s ing the
p ark ing b rake
.. When you sta rt to drive as usua l, the park
ing brake is automatically re leased and your
vehicle begins to move.
When stopping at a traffic signa l or stopping
in city traffic, the parking brake can be ap
plied. The veh icle does not have to be held
with the footbrake. The park ing brake elimi
nates the tendency to creep with a drive range
engaged . As soon as you dr ive off as usual,
the park ing brake is released automatically
and the veh icle sta rts to move .
Starting on slope s
When starting on inclines, the starting assist
prevents the vehicle from unintentionally roll
ing back . The braking force of the parking
brake is not released until sufficient dr iv ing
fo rce has been bu ilt up at the whee ls.
(D Tips
For safety reasons, the park ing brake is re
leased automatically only when the dr iv
er 's safety belt is engaged in the buck le.
Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
.. Keep the switch
accelerator. The park ing brake stays applied
and prevents the vehicle from ro lling back
ward.
.. You can release the switch
C®l once you are
sure that you a re develop ing enough for
ward momentum at the wheels as you de
press the accelerator .
Depending on the weight of the r ig (vehicle
and trai ler) and the seve rity of the incline, you
may roll backwards as you start. You can pre
vent rolling backwards by holding the parking brake switch(®) pulled out and acce lerating -
just as you would when starting on a hill with a conventional hand brake .
Emergency braking
In the event that the conventional brake sys
tem fails or locks .
.. In an emergency, pull the switch C®l and
con tinue to pull it to slow your vehicle down
w ith the park ing brake.
.. As soon as you release the switch (®) or ac-
celerate, the b rak ing process stops.
If you pull the switch C®l and hold it above a
speed of about 5 mph (8 km/h), the emergen
cy brak ing f unct ion is init iated . T he ve hicle is
braked at all fou r whee ls by activating the hy
draulic b rake sys tem. The brake performance
is similar to making an emergency stop~&. .
In order not to act ivate the emergency brak
ing by mis take, an audib le warning tone (buz
zer) sounds whe n the switch(®) is pulled . As
soon as t he sw itch C®l is re leased , or the accel
erator peda l is depressed, emergency braking
stops.
_& WARNING
-Emergency braking should only be used in
an emergency, when the norma l foot brake
has fa iled or the brake pedal is obstructed.
Using the parking brake to perform emer
gency b raking will slow your veh icle down
as if you had made a full bra ke application .
The laws of physics cannot be suspended
even with ESC and i ts associated compo
nents (ABS, ASR, EDL) . In corners and
when road or weathe r conditions are bad,
a full brake application can ca use the vehi
cle to sk id or the rear end to break away -
risking an accident.
Start-Stop-System
Description
Applies to vehicles: with Start -Stop -System
T he Start -Stop-Sys tem can help increase fuel
e conomy and reduce CO 2 emissions.
In the Start-Stop-mode, the engine shuts off
automat ica lly when the veh icle is stopped,
such as at a traffi c light. The igni tion remains .,.
switched on during this stop phase. The en
gine will be automatically restarted when
needed.
The last Start-Stop-System setting (on/off us
ing the button
I CAJ ,.I) will be restored when the
ignition is turned on. The LED in the
l@ "'I but
ton turns on when the Start -Stop-System is
switched off manually.
Basic requirements for the Start-Stop
mode
- The driver's door is closed .
- The driver' seat belt is latched.
- T he hood is closed.
- The vehicle must have been driven faster
than 2.5 mph (4 km/h) since the last stop .
- A tra iler is not hitched to the vehicle.
_&, WARNING
-Never le t the vehicle roll with the engine
switched off. You could lose contro l over
the vehicle . This can lead to a collision
and serious injuries .
- The brake booster and the steering sup
port do not work wh ile the engine is
switched off. More force is required to
stop and to steer the vehicle .
- To reduce the risk of injuries, make sure
that the Start-Stop-System is turned off
when working in the engine compart
ment
q page 78.
(D Note
Always switch off the Start-Stop -System
when driving through water ¢page
78.
On the road 77
Starting/stopping the engine
Applies to veh icles: w it h Sta rt-Stop -System
Fig. 77 Inst rument cluster: en g in e sw itched off (stop
p hase)
~ Slow the veh icle to a stop using the brake
and keep pressing the brake pedal. The en
gine w ill switch off. The
[I] i ndicato r light
appears in the information line in the instru
ment cluster display.
~ When you take your foot off the brake ped
al, the engine restarts . The indicator light
turns off.
Additional information
The eng ine will switch off in the P, D, N and S
positions as well as in manua l mode. In the P
position, the engine will also remain off if you
take your foot off the brake pedal. The engine
starts again when you select another selector
lever position and take your foot off the brake
pedal.
If you select the R position during a Stop
phase, the engine will start again .
Shift from D to P quickly to prevent the engine
from starting unintentionally when shifting
through R.
You can determine for yourself if the engine
will stop or not by reducing or increasing the
amount of force you use to press the brake
pedal. For example, if you only lightly press
on the brake pedal in stop-and and-go traffic
or when turn ing, the engine will not switch off
whe n the vehicle is stationary. As soon as you
press the brake down ha rder, the engine will
switch off.
lill>
Messages in the instrument cluster
display
Applies to vehicles: with Start-Stop-System
Start-Stop system deactivated: Please re
start engine manually
This message appears when specific condi
tions are not met dur ing a s top phase and the
Start -Stop-System w ill
not be able to restart
the eng ine.
If the Dor R selector lever posi
tions were engaged, P will be selected auto mat ica lly. The engine must be started with
the
! START ENGINE STOP I button .
Start-Stop system: System fault! Function
unavailable
There is a malf unctio n in t he Star t-Stop-Sys
tem . Dr ive the veh icle to an authorized repair
fac ility for servicing as soon as possible to cor
rect the malfunction .
Speed warning system
Introduction
The speed warning system helps you to stay
under a specified maximum speed.
The speed warning system warns you if you
a re exceeding the max imum speed that you
have set. You w ill hear a warn ing tone when
your speed exceeds the stored va lue by ap
p rox ima tely 3 mph (3 km/h) . An indicato r
l ight . (USA models)/ . (Canada mode ls) in
t he ins trumen t cluster display also turns on at
the same time. The indicator light
a;m
turns off when the speed decreases below the
stored maximum speed.
Setting a threshold is recommended if you
wou ld like to be reminded when you reach a
certain maximum speed . Situations where you
may want to do so include driving in a country
with a general speed limit or if there is a
specif ied max imum speed for winter tires.
(D Tips
Even tho ugh your vehicle is equipped with
a speed warning system, you should st ill
On the road 79
watch the speedometer to make sure you
are not driving faster than the speed limit.
Setting the threshold
You can set, chang e and delete the threshold
in the MMI.
.,. Select: I CAR I function button > (Car)* sys
tems
control button > Driver assist > Speed
warning.
You can set any threshold between 20 mph
(30 km/h) and lS0 mph (240 km/h). Sett ings
can eac h be adjusted in increments of 6 mph
(10 km/h).
Cruise control
Switching on
Applies to vehicles: with cruise control
The cruise control system makes it possible to
drive at a constant speed starting at
20 mph
(30kmlh).
0
f
®t
0
Fig. 80 Contro l lever with set button
Fig . 81 Display: Selected speed
.,. Pull the lever to position © c::> fig. 80 to
sw itch the system on.
.,. Drive at the speed you w is h to set.
.,. Press button @ to set that speed.
80 On the road
The stored speed and the ind icator light
A;(l)~i~ (US mo dels) 1,'I (Canadian mode ls) a p
pea r in the instrument cluster d isp lay
c::> fig. 81. The display may vary, depending on
the type of d isplay in your vehicle .
This informat ion is also shown briefly in the
Head -up Display*.
The speed is kept constant v ia an engine o ut
put adjustment or active b rake intervention.
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 vehicles .
- For safety reasons, the cruise control
should not be used in the city, in stop
and-go traff ic, on twist ing roads and
when road conditions are poor (such as ice , fog, grave l, heavy ra in and hydro
planing) -risk of accident.
- Turn
off the cruise control temporar ily
when entering turn lanes, highway exit lanes o r in construc tion zones.
- Please note that inadvertently "rest ing"
yo ur foot on the accelerator peda l causes
the cruise control not to brake . T his is
because the cr uise control is overridden
by the d river's acce leration .
- If a brake system malfunc tion such as
overheating occurs when the cruise con
tro l system is switched on, the braking
function in the system may be switched
off. The other cruise control functions re
ma in active as long as the indicator light
[~;rn~i~ (US models) !Ill (Canad ian mod
els) is on .
(j) Tips
The brake lights illuminate as soon as the
brakes decelerate automat ica lly.
Changing speed
Applies to veh icles: w ith cru ise control
., To increase/decrease the speed in inc re
ments, tap the lever in the
0 10 direc tion
c::> fig . 80
., To increase/decrease the speed quic kly,
hold t he lever in the
0 10 direction until
the desired speed is displayed.
You can also press the accelerator pedal down
to increase your speed, e.g . if you want to
pass someone . The speed you saved earlier
will res ume as soon as you release the acceler
ator pedal.
If, however, you exceed your saved speed by
6 mph (10 km/h) for longer than 5 m inutes,
the cr uise control wi ll turn
off temporari ly.
The green symbol
A;(l)~i~ (US mode ls) 1,'I
(Canadian mode ls) in the display will go out
but the saved speed rema ins the same .
Presetting your speed
Applies to veh icles : w ith cru ise control
You can preset your desired speed while the
vehicle is not moving.
., Switch on the ignition.
., Pull lever into position
(D c::> fig . 80.
., Press t he lever in the 0 or 0 direction to
increase or decrease your speed .
., Release the lever to save that speed .
This function makes it possible, for examp le,
to save the speed you want before dr iving on
the h ighway. Once on t he h ighway, act ivate
the cru ise control by pulling the lever toward
(D .
Switching the system off
Applies to veh icles: w ith cruise control
Temporary deactivation
., Press the b rake pedal, or
., Press the leve r into posi tion @(n ot clicked
into place)
c::> fig. 80, or
... Drive for longer t han 5 min utes at more
than 5 mph (10 km/h) above the stored
speed.
Switching off completely
"' Press leve r into posi tion @ (clicked in to
place), or
"' Switc h the ignition off.
The system reta ins the saved speed if y ou de
activa te t he cr uise con trol tem porarily. To re
sume the saved speed, release the b rake pe d
a l and pull the lever to position @.
Sw itch ing the ig nition o ff erases the saved
spee d.
& WARNING
You should only return to t he save d sp ee d
if it is not too fast fo r th e cur rent traffic
condi tions -risk of an accident !
On the road 81