Page 89 of 316

on the time of year, people inside the ve
hicle can be exposed to very high or very
low temperatures .
0 Note
Avoid high engine rpm, full throttle and
heavy engine loads until the engine has
reached operating temperature -other-
wise you risk engine damage.
@ For the sake of the environment
Do not let the engine run while parked to
warm up . Begin driving immediately. This
reduces unnecessary emissions.
@ Tips
- After starting a cold engine, there may
be a brief period of increased noise be
cause the oil pressure must first build up in the hydraulic valve adjusters . This is
normal and not a cause for concern .
- If you leave the vehicle with the ignition
switched on, the ignition will switch off
after a certain period of time . Please
note that electrical equipment such as
exterior lights will switch off as well
when that happens .
Switching engine off
App lies to vehicles: with Conve nie nce key
"" Bring your vehicle to a complete stop.
... Move the selector lever to the P or N posi
tion.
"" Press the
!START ENGINE STOPI button
r:::;, page 86, fig. 100 .
Steering 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 doo r. T he locked steer
ing helps prevent vehicle theft.
Emergency off
If necessary, the engine can be switched off
with the selector lever in the R or D/S posi
tions. To do so , step on the brake pedal and
press and hold the
I START ENGINE STOP I but-
On the road 87
ton. The vehicle speed must be less than 6
mph/ 10 km/h.
A WARNING
- Never turn off the engine before the ve
hicle has come to a complete stop . The
full function of the brake booster and the power steering is not guaranteed . You
must use more force to turn or brake if
necessary . Because you cannot steer and
brake as you usually would, this could
lead to crashes and serious injuries.
- For safety reasons, you should always
park your vehicle with the selector lever
in P . Otherwise, the vehicle could inad
vertently roll away.
- The radiator fan can continue to run for
up to 10 minutes even after you have
turned off the engine and removed the ignition key. The radiator fan can also
turn on again if the engine coolant heats
up because of intense sunlight or heat
build-up in the engine compartment.
- Always take the key with you whenever you leave your vehicle. Otherwise, the
engine could be started or electrical
equipment such as the power windows
could be operated. This can lead to seri
ous inJury.
- Never leave children or persons requiring
assistance unattended in the vehicle. The
doors can be locked using the remote
transmitter, preventing people from es
caping from the vehicle on their own in
the event of an emergency. Depending
on the time of year, people inside the ve hicle can be exposed to very high or very
low temperatures.
(D Note
If the engine has been under heavy load
for an extended period, heat builds up in
the engine compartment after the engine is switched off -there is a risk of damaging
the engine. Allow the engine to run at idle
for about two minutes before switching it
off .
Page 90 of 316

88 On the road
Driver messages
Ignition is on
This message appears and a warn ing tone
sounds if yo u open the dr iver's door when the
ignition is switched on.
No key identified
This message appears when the
I STAR T ENGIN E ST OP !* button is pressed if
there is no master key inside the vehicle or if
the system does not recognize it. For exam
p le, the master key cannot be recognized if it
is co vered by an object (e.g. aluminum brief
case) which screens the radio signal. Electron
ic devices s uch as ce ll phones can also inter
fere with the radio signal.
Press brake pedal to start engine
This message appears if you do not press the
brake peda l to start the engine .
Shift to N or P to start engine
This message appears when attempting to
start the engine if the selector lever for the
automatic transmission is not in the P or N
position . The engine can only be started with
the selector in these posit ions .
!I Is the key in the vehicle ?
This message appears in a veh icle w ith Con
ve nience key* if the master key is removed
from the veh icle with the engine running . If
the master key is no longer in the vehicle, you
cannot switch on the ignition after stopping
the eng ine and you also cannot start the en
g ine again . Moreover, you cannot lock the ve
h icle from the outside with the key .
Shift to P otherwise vehicle can roll away.
Doors do not lock if lever is not in P.
This message appears for safety reasons
a long with a warning signal. It appears if the
selector lever for the automatic transm ission
is not in the P position when switch ing off the
ignition . Move the selector lever to the P pos i
tion, otherwise the veh icle is not sec ured
against rolling away . You also cannot lock the vehicle
using the locking button* on the door
handle or using the remote key.
Turn off ignition before leaving car
Th is message appears if the driver's door is
opened wh ile the ignition is switched on. Al
ways switch off the ignition if you are leaving
the vehicle. See also
r::} page 84 or¢ page 86.
Shift to P and turn off ignition, otherwise ve
hicle can roll away
This message appears if the driver's door is
opened w hile the ignition is switched on and
t h e selecto r lever is not in the P position. Shift
the selecto r lever into the P position and
switch off the ignition when you exi t the vehi
cl e. Otherwise the vehicle could roll. See also
¢ page 84 or¢ page 86.
Convenience key defective! Use ignition lock
This message appears if the engine must be
started or stopped using the ign ition key and
not the
I START ENGINE STOP I* button.
Electro mechanical
parking brake
Operation
The electromechonicol parking broke replaces
the hand broke.
Fig. 101 Cente r console: Park ing b rake
"' Pull on the switch ¢ fig. 101 to apply the
pa rking brake . The indicator light in the
sw itch ill uminates.
"' Step on the brake pedal or the accelerator
pedal and press the swit ch at the same time
to release the park ing brake. The indicator
light in the switch goes out.
Ill>
Page 91 of 316

Your vehicle is equipped with an electrome
chanica l parking brake . The parking brake is
des igned to prevent the vehicle from ro lling
un intent ionally and replaces the hand brake.
I n addition to the norma l functions of a tradi
tional hand brake, the electromechanica l
parking brake provides various convenience
and safety functions.
When start ing f rom re st
- T he integral starting assist helps you when
driving by automatically releasing the park
ing brake ¢
page 90, Starting from rest.
-When starting on inclines, the starting as
sist prevents the vehicle from unintentional
l y rolling back. The braking force of the
parking brake is not released until sufficient
driv ing force has been built up at the
wheels .
Emergenc y bra ke function
An emergency brake ensures that the vehicle
can be slowed down even if the
normal brakes
fa il¢
page 90, £mergency braking.
Ind icator light s
-If the parking brake is closed w ith the igni
tion
s witched on the indicator lights come
on . (USA models)/ . (Canada models) in
the instrument cluster and the sw itch.
- If the parking brake is closed with the igni
tion
switched off the indicator lights come
on . (USA models)/ . (Canada mode ls) in
the instrument cluster and the switch for
about 20 seconds.
A WARNING
If a drive range is engaged with the veh icle
stat ionary and the engine runni ng, you
must in no instance accelerate care lessly.
Otherw ise the vehicle will start to move
immediate ly- risk of an accident.
W Note
If the symbo l. in the display or the ind i
cato r light .. (USA models) . (Cana
da mode ls) in the instrument cluster flash-
On th e ro ad 89
es, there is a ma lf u nction in the brake sys
tem . By pressing the
ISETI button, you can
bring up a dr iver message which explains
the malfunct ion in more detai l. If the driv
er message
Pa rking brake s ystem fault!
See owner 's manual
appears, there is an
ope rat ing malfunction in the parking brake
which yo u should have repaired immedi
ate ly by an autho rized Aud i dea le r o r other
q ualified wor ks hop ¢
page 29.
(D Tips
-Yo u can app ly the parking brake at any
t ime -even with the ig nition turned off.
T he ign it io n m ust be tu rned on in o rder
to release the parking brake .
- Occasional noises when the pa rking
brake is app lied and released are no rmal
and are no t a cause for conce rn.
- Whe n the vehicle is pa rked, the park ing
brake goes through a sel f-test cycle at
regu lar interva ls. Any associated noises
are normal.
Parking
Parking
.,. Stop the vehicle with the foot brake .
.,. Pull the switch to apply the parking brake.
.,. Move the selector lever to P .
.,. Turn the engine off¢.&_.
In addit ion on incline s and grades
.,. Turn the steering wheel so that yo ur vehicle
wi ll roll against the curb in case it should
start to move.
A WARNING
--When you leave your vehicle -even if on-
ly briefly -always remove the ignition
key. Th is applies pa rticularly when chil
dren remain in the vehicle. Otherwise the
children could sta rt the eng ine, release
the par king brake or operate electrical
equ ipment (e.g. power windows). There
is the risk of an acc ident.
Page 92 of 316

90 On the road
-When the vehicle is locked, no one - par
t icu larly not ch ildren should remain in
the vehicle. Locked doors make it more
difficult for emergency workers to get in
to the vehicle - putt ing lives at risk .
Starting from rest
The starting assist function ensures that the
parking brake is released automatically upon
starting .
Stopp ing and ap plyin g park ing b rake
.. Pu ll the switch to apply the parking brake.
Starting and automatically relea sing the
par king brake
.. When you start 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 on vehicles with an automatic
transmission, the park ing 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 start ing ass ist
prevents the vehicle from unintentionally roll
i ng back . The braking force of the pa rking
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 bu ck le.
Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
• Keep the switch pulled and depress the ac
celerator . The parking brake stays applied
and prevents the vehicle from roll ing back
ward .
• Yo u can re lease the switch once you a re su re
tha t you are deve lopi ng enough d riving
force a t th e wheels by depressing the acce l
erator.
Depend ing on the we igh t of the rig (vehi cle
and t railer) and the severity of the incline, yo u
may ro ll backwa rds as yo u start . You can pre
vent rolling backwa rds by holding the parking
brake switc h pulled out and accelerating - just
as you would when starting on a hill with a
convent ional hand brake.
Emergency braking
In the event that the conventional brake sys
tem fails or locks.
.. In an emergency, pull the switch 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 acceler-
ate, the brak ing process stops.
If you p ull the switch and ho ld it above a
speed of abo ut 5 mph (8 km/h), the emergen
cy brak ing funct ion is initiated . The ve hicle is
braked at all four whee ls by activating the hy
draulic b rake system . The brake performa nce
i s sim ilar to making an emergency stop~& .
In order not to act ivate the emergency brak
i ng by mistake, an audib le warning tone (buz
zer) sounds when the switch is pu lled. As soon
as the switch is re leased, or the accele rato r
peda l is depressed, eme rgency b raking stops .
A WARNING
Emergency braking should only be used in
an emergency, when the norma l foot bra ke
has fai led or the brake pedal is obs tructed. .,..
Page 93 of 316

Using the parking brake to perform emer
gency braking will slow your vehicle down
as if you had made a full brake applicat ion.
The laws of physics cannot be suspended
even w ith ESC and its associated compo
nents (ABS, ASR, EDS) . In corners and
when road or weather conditions are bad, a full b rake application can cause the vehi
cle to skid or the rear end to break away -
risking an accident.
Driver messages in the instrument
cluster
Caution: V ehicl e parked too steep
T his message appears when the park ing brake
is applied on an incl ine that exceeds about
30%.
In this case the braking power of the parking
brake may
not be adequate to prevent the ve
h icle from rolling unintentionally .
Press brak e pedal to rel ease par king brak e
This driver message appears when the switch
to release the parking brake was pressed. The
parking brake can on ly be released if yo u step
on the brake pedal and at the same time press
the switch or you automatically release the parking brake with the start ing ass ist
c:> page90.
fplj Parking br ake m alfuncti on!
This driver message appears together with
the yellow
JiJ symbol when there is a parking
brake ma lfunction.
Start-Stop-System
Description
Appl ies to vehicles : wit h Start -Stop-System
The Star t-S top -System can he lp inc rease f ue l
economy and red uce CO2 emissions .
I n the Start-Stop-mode, the eng ine shuts off
a utomatically when the vehicle is stopped,
such as at a traffic ligh t. T he ig nition remains
switched on during t his stop phase. The en -
On th e ro ad 91
gine wi ll be automatica lly restarted when
needed .
T he last Start-Stop-System se tting (on/off us
ing the b utton 10 ..
I) will be restored when the
ignition is turned on . The L ED in the 10 ..
I but
ton t urns on when the Start-Stop-System is
switched off manually .
Basic requirements for the Start -Stop
mod e
-The driver's doo r is closed.
- The driver 's seat be lt is la tched.
- The hood is closed.
- The vehicle must have been dr iven faster
than
2.5 mph (4 km/h) since the last stop.
- A trailer is not hitched to the vehicle.
A WARNING
- Never turn off the engine before the ve
hicle has come to a comp lete stop. The
full funct ion of the brake boos ter and the
power steering is not gua ranteed. You
m ust use more force to tu rn or brake if
necessary. Beca use you cannot steer and
brake as you usually wou ld, this could
lead to crashes and ser ious injuries.
- To reduce the risk of injuries, make sure
that the Start-Stop-System is turned off
when working in the eng ine compart
ment
c:> page 93 .
(D Note
Always switch off the Start-Stop -System
when driving through water
c:> page 93.
Page 94 of 316

92 On the road
Starting/stopping the engine
Applies to vehicles: with Start-Stop-Syste m
Fig. 102 Instrument cluste r: Eng ine switched off (stop
phase)
.. Slow the vehicle to a stop using the brake
and keep pressing the brake pedal. The en
gine w ill switch off. The
[IJ indic ator light
appears in the instrument cluster display
and - also appears in the trip com
puter .
.. When you take your foot off the brake ped
al, the engine restarts. The indicator light
turns off .
Additional information
The engine will switch off in the P, 0/5 and N
positions as well as in manual 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 eng ine will start aga in .
Shift from 0/5 to P qu ickly to prevent the en
g ine from starting unintentionally when shift
ing through R.
You can determine for yourself if the engine
will stop or not by reduc ing 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 tu rning, the eng ine will not switch off
when the vehicle is stationary. As soon as you
press the brake down harder, the engine will
switch off.
(D Tips
-Press the brake pedal during a stop
phase to keep the vehicle from rolling.
- When you stop and the start-stop-sys
tem turns the engine off, the ignition re
mains on. Make sure that the ignition is
switched off before exiting the vehicle.
- The ignition will turn off if you press the
!START ENGINE STOPI * button during a
stop phase.
- The image in the display is slightly differ
ent in some models.
General information
Applies to vehicles: with Start-Stop-System
The standard Start-Stop-mode can be cancel
led for different system-related reasons.
Fig. 103 Instrument cluster: Engi ne-Stop tempora rily
unavailable
Engine will not switch off
Before each stop phase, the system checks if
certain conditions have been met. For exam
ple , the eng ine will
not be switched off in the
following sit uations:
- The engine has not reached the minimum
required temperature for Start-Stop -mode.
- The interior temperature selected by the A/C
system has not been reached.
- The outside temperature is extremely high/
low.
- The windsh ield is being defrosted
~page 81.
-The parking system* is switched on .
- The battery charge level is too low .
- The steering wheel is sharply turned or
there is a steering movement.
Page 95 of 316

- After engaging the reverse gear.
er.
Engine automatically restarts
The stop phase is interrupted in the following
situations, for example . The engine restarts
without any act ion by the driver .
- The interior temperature varies from the
temperature selected in the A/C system.
- The windshield is beeing defrosted
Q page 81.
-The brake pedal is pressed several times in a
row.
- The battery charge level becomes too low.
- High power consumption .
@ Tips
If you shift into the 0/5 or N positions af
ter shifting into reverse, the vehicle must
be driven faster than 6 mph (10 km/h) in
order for the engine to switch off again.
Switching the Start-Stop-System on/off
manually
Applies to vehicles: with Sta rt-Stop-System
If you do not wish to use the system, you can
switch it off manually .
Fig. 104 Center console: Start -Stop -System button
.,. To switch the Start-Stop -System on/off
manually, press the
1 (1;)~ 1 button . The LED in
On the road 93
the button turns on when the system is
switched off .
In vehicles without the MMI*, the
IO\> .. j button
is found underneath the selector lever .
(j} Tips
If you switch the system off during a stop
phase, the engine will start again auto
matically.
Messages in the instrument cluster
display
App lies to vehicles: wit h Start-Stop-Syste m
Start-stop system: deactivated . Please
restart engine manually
This message appears when specific condi
tions are not met during a stop phase and the
Start-Stop-System will
not be able to restart
the engine. The engine must be started with
the key or with the
I STAR T ENGINE STOP t*
button.
Start-stop system: system fault. Function
unavailable
There is a malfunction in the Start-Stop-Sys
tem. Drive the vehicle to an authorized repair
facility for servicing as soon as possible to cor
rect the malfunction.
Transmission: Car may roll! Shift to park!
This message appears if the selector lever is
not in the P position when the driver's door is
opened. You will a lso hear a warning tone.
Shift the selector lever to the P position . Oth
erw ise, the vehicle could roll.
Speed warning system
Overview
The speed warning system helps you to keep
your driving speed below a set speed limit.
The speed warning system warns if the driver
exceeds a previously stored maximum speed.
A warning tone will sound as soon as the vehi cle speed exceeds the set speed by about
3 mph (3 km/h) . At the same time, a warning
IJJ,,
Page 96 of 316

94 On the road
symbol appears in the display. The symbol's
appearance might be different in some mod
els.
The speed warning system has
two warning
thresholds
that function independently of
each other and that have somewhat d ifferent
purposes:
Speed warning 1
You can use speed warn ing 1 to set the maxi
mum speed wh ile you are dr iv ing. This sett ing
will remain in effect unt il you turn off the igni
tion, assuming that you have not changed or
reset the setting.
The speed warning symbol. (USA models)/
• (Canada mode ls) in the warning 1 display
appears when you exceed the maximum
speed . It goes out when the speed fa lls below
the stored maximum speed.
The speed warn ing symbo l wi ll also go out if
the speed
exceeds the stored maximum speed
by more than about 25 mph (40 km/h) for at
least 10 seconds. The s tored maximum speed
is deleted .
Setting speed warning 1
c:!;> page 94 .
Speed warning
2
Storing warning 2 is recommended if you al
ways
want to be reminded of a certa in speed,
for example when you are trave ling in a coun
try that has a general maximum speed limit,
or if you do not want to exceed a specified
speed for winte r ti res.
The speed warning 2 symbol ,. (USA mod
e ls)/ . (Canada models) appears in the dis
p lay when you exceed the stored speed limit.
Unlike wa rning 1, it will not go out until the
vehicle speed drops below the stored speed
limit.
Setting speed warn ing 2
c:!;> page 94.
@ Tips
Even though your vehicle is equipped with
a speed warning system, you shou ld sti ll
watch the speedometer to make sure you are not driving faster than the speed limit.
Speed warning 1: setting a speed limit
Warning threshold 1 is set by the I SET I but
ton .
Fig. 1 05 SE T butto n in th e instrumen t cl uster
Storing the maximum speed
• Dr ive at the desired maximum speed .
• Press the
ISETI button in the instrumen t
panel display ~
fig. 105 for 1 second .
Resetting the maximum speed
• Drive the vehicle at a speed of at least
3 mph (5 km/h)
• Press the
ISET I button for more than 2 sec-
onds.
T he speed warn ing symbol . (USA models)/
• (Canada models) will appear briefly in the
display when you release the
!SE T! button to
i ndica te that the max imum speed has been
stored successfully .
T he maximum speed remains stored until it is
changed by pressing the
!S ET ! bu tton again
briefly or until it is deleted by a lengthy push
on the button .
Speed warning 2: setting a speed limit
The MM!* or the radio control unit is used to
set, change or delete warning threshold
2.
• Select: !CAR lfunction b utton> In strument
cluster> Speed warning .
Or
.. Select: !CAR ! f unction button> Car sys·
tems*
control button > Driver assist >
Speed warning .
Warning threshold 2 can be set in the speed
range starting from 20 mph to 150 mph ..,.