
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.

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.

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.

- 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,,

(30 km/h to 240 km/h). Settings can each be
adjusted in intervals of
5 mph (10 km/h).
Cruise control
Switching on
The cruise control system makes it possible to
drive at a constant speed starting at 20 mph
(30 km/h) .
0
f
®t
0
Fig. 106 Contro l lever with push -button
Fig. 107 Di sp lay: Selected speed
.. Pull the lever to posit ion (!) ~ fig. 106 to
switch the system on .
.. Drive at the speed to be controlled .
.. Press button @to set that speed.
The stored speed and the ind icator light
Bll!lm (US model)/ il (Canad ian model) ap
pear in the instrument cluster display
<=>fig. 107. The display may vary, depending
on the type of display in your vehicle.
The speed is kept constant by modifying en
gine power or through an active brake inter
vention.
A WARNING
- Always pay attention to the traffic around you when the cruise control is in
operation . You are always responsible for
c:o ;:g 0 ci: c:o al
On th e road 95
your speed and the distance between
your vehicle and other vehicles.
- For reasons of safety, 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
ice, fog, gravel, heavy rain and hydro
plan ing) -you could have an accident.
- Switch the cruise control off temporarily
when dr iv ing in turning lanes, highway
exits or in construction zones.
- Please note that unconsciously "resting"
your foot on the accelerator pedal causes
cru ise contro l not to brake. This is due to
the control system being overridden by
the driver's acceleration.
- Never use the cruise control when driving
off-road or on unpaved roads. The cruise
con tro l is intended for use only when the
vehicle is being operated on paved roads,
and is not suitable for use off-road or on
unpaved roads.
- If a brake system malfunction such as
overheating occurs when the cruise con
trol system is switched on, the braking
function in the system may be switched off. The other cruise control functions re
main active as long as the indicator light
IR;\1)~14 (US model)/ fil (Canadian model)
1s on .
(D Tips
The brake lights illuminate as soon as the
brakes apply automatically .
Changing speed
.. To increase/decrease the speed in incre
ments, tap the lever in the
010 direction
~pa ge 95, fig. 106.
.. To increase/decrease the speed quickly,
hold the lever in the
010 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

98 Hybrid -Do not transport fluids in open contain
ers in the luggage compartment. Spilled
fluids can seep underneath the cargo
floor. This can damage the high voltage
system.
Starting the vehicle
App lies to vehicles: with hybrid drive
The vehicle is started and turned off either
with the ignition key~
page 83 or with the
I START ENGIN E STOP ! button* ~ page 86 in
the same way as a conventional vehicle .
When starting the vehicle, the needles in the instrument cluster move upward briefly .
When the vehicle enters drive ready mode,
the status message
hybrid ready appears
briefly in the instrument cluster display and
the needle in the power meter points to
READY ~ page 98.
Depending on the operation mode of the hy
brid system, there are two possible drive
ready modes after the vehicle has been start
ed:
Power meter overview
Applies to vehicles: with hybrid dr ive
Drive ready mode with combustion engine
If the operating requirements~ page 100 for
electric drive mode are
not met, the combus
tion engine starts the vehicle as usual. You can start driving as usual.
Drive ready mode with the electric motor
If the operating requirements~ page 100 for
the electric drive mode are met, the combus
tion engine remains off after starting the ve
hicle.
(0 Tips
To prevent the 12 volt battery from dis
charging, never leave the vehicle parked in
the drive ready mode. Remove the key
from the ignition or press the
I START ENGINE STOP! button* . When
leaving the vehicle always take the key
with you.
The power meter shows the hybrid drive condition and the availability of the hybrid system.
Fig. 108 Power meter overv iew
An economical driving and recuperation range
is shown in green. A driving range that is not
economical is shown in orange. In addition, the battery status
provides information about
the high voltage battery charge status.
lill-

(!) Fuel efficient driv ing within the
comb ustion engine's partia l
l oad range
@ System limits fo r electric d riving
i n the EV mode
® Elect ric driving or d riving w it h
the combustion engine (EFFI -
CI ENCY)
© Vehicle d rive ready (READY)
® H igh vo ltage bat tery c ha rge sta -
tus
® Recuperation (CHARGE)
0 Dr iving w it hi n the combus tion
engine's fu ll loa d range
® 100% combust io n engine
® Boost ing -the elect ric e ngine
assists the combus tion engine
( B OOST)
@ Engaging the conventiona l
brakes w ith recuperat ion
@ Vehicle not drive ready ( OFF)
@ EV mode active
The needle rema ins at
OFF when the igni tion
is tur ned on. W hen the veh icle en ters drive
ready mode, t he stat us message
hybrid ready
ap pears briefly in the instrument cluster dis
p lay and the needle in the power meter po ints
to
READY .
Indicator lights and messages
Applies to vehicles: with hybrid drive
The indicator lights in the instrument cluste r
b link or t urn on . Th ey i ndicate fu nctions o r
malfunct ions .
W ith some ind icator lights, messages may ap
pear and a warning tone may sound. Also note
the indicator lights in c::,;,
pag e 27.
Press brake pedal to start vehicle
This message appea rs if you do not press the
brake peda l when starting the vehicle.
Hybrid 99
Shift to N or P to start vehicle
T his mess age appears if the se lector lever for
the automatic t ransmission is not in t he N or
P positions when starting the vehicle.
- Hybrid drive: System fault! Power
brakes, steering malfunction possible
I f the indica tor ligh t turns on and this mes
sage a ppears, t here is a ma lf u nction in the hy
bri d system. The brake booster and the power
steering may stop working. Stop the vehicle i n
a safe l ocat io n as soo n as poss ible.
You may cont in ue dr iving if the indicator light
turns
off afte r start ing the ve hicle severa l
times. Dr ive to an a uthorized repa ir facility
immediately to have the malfunct ion correct
ed .
EHithjj,j Hybrid drive : Sy stem fault!
Contact dealer
If the indicator light turns on and this mes
sage appears , there is a malfunct ion in the hy
br id system . Drive to a n author ized repair fa
c ili ty immediat ely to hav e th e m alfunc tion
corrected.
Ill Hybrid system: Performance
restricted. Please contact dealer
If th e i ndica to r light turns on and this mes
sag e appea rs, there is an engine contro l ma l
f unct io n .
The @B indi cator light in t he instr u
m ent cluster also tur ns on. The engine ou tput
i s re duced. Drive to yo ur autho rize d Au di dea l
er or qualifie d repair facility immediately to
have the malfunct io n corrected .
Hybrid drive deactivated. Please restart
engine manually.
Th is message ap pears if the high vo ltage bat
te ry charge leve l has fallen below a certa in
range or if the ignition key is no longer inside
the ve hicle for ve hicles with the convenience
key *.
Start the eng ine with e it h er the ignitio n key
¢page 83 or with the !STAR T EN GINE STOPI
button* c::> page 86.

100 Hybrid
Hybrid battery: Low battery charge.
B attery will be charged while driving.
This message appears if the high voltage bat
tery charge level has fa llen below a certain
range. If this message turns off after a little
while, the high voltage battery charged
enough while dr iv in g.
If the message does not turn off, have an au
thorized repair fac ility correct the malfunction
as soon as possible.
EV mode is currently unavailable .
This message appears if the conditions
¢
page 100 for enhanced e lectric driving are
not met. Try again at a later time.
Hybrid functions and operating modes
App lies to vehicles: with hybrid dr ive
Fig. 109 Center console: c:f,V button
.,. To turn on EV mode, press the ld"I button .
The indicator light in the button will turn
on . The. indicator light a lso turns on in
the instrument cluster display.
The functions and operating modes described
be low are se lected automatica lly by the vehi
cle control system, depending on the vehicle
operat ing status. This ensures that the vehicle
is always in the correct operating mode. One
exception is the enhanced electric driving
mode (EV mode), which is activated by the
driver
¢pag e 100.
Driving with the combustion engine
The vehicle is powered by the combustion en
gine. The h igh voltage battery is charged si
multaneously, if needed.
Full acceleration (boost)
In full acceleration, the vehicle is powered by
both the combustion engine and the electric
motor . This operating mode is called
Boost
and is on ly available for a short amount of
time because it uses so much energy. Availa
bility depends on the high voltage battery
charge level.
The boost operating mode is activated by
pressing the accelerator pedal all the way
down.
Electric driving
The vehicle can be driven completely electri
ca lly depending on the high vo ltage battery
charge level and the driving resistance. The
combust ion eng ine turns off at that t ime.
The combustion engine starts when accelerat
ing or when the high voltage battery charge
level drops be low a certain threshold. The ve
hicle resumes e lectric driving once the accel
eration and the high voltage battery charge
level permit.
Enhanced electric driving mode (EV
mode)
Pressing the 1~ 1 button ¢ fig. 109 can extend
the usual limits on electric driving so that you
can always drive in electric mode, if the condi
t ion of the e lectr ica l system permits . The op
erating mode is then set to maximum electric
drive @,@ ¢
page 98, fig. 108. It can be
driven complete ly elec trically for up to 1.8
miles (3 km) at a constant 37 mph (60 km/h) .
T he following conditions must be met to act i
vate the enhanced e lectr ic drive:
- The high voltage battery must be suffic ient
ly charged.
- The temperature of the 12 volt batter ies
and the hig h voltage battery must be suffi
cient.
- The vehicle speed must not be higher than
62 mph (100 km/h).
- The transmission must not be in tiptronic
mode.