Driving
_& WARNING
-Ne ver turn off the engine before the veh icle
has come to a comp lete stop . The f ull func
t ion of the brake booster and the power
steering is not guaranteed. Yo u must use
more force to turn or brake if necessary . Be
ca use you cannot steer and b rake as you
us ually wou ld, this could lead to crashes
and serious injur ies.
- To reduce the risk of inju ries, make s ure that
t h e S tart -Stop-System is turned off whe n
wor king in the eng ine compart ment
9page 93 .
(D Note
Always sw itch off the Start-Stop-System
when dr iv ing th rough water
9 page 93 .
Starting/stopping the engine
Applies to veh icles: w ith Start -Stop -System
F ig . 104 In strum ent cluste r: En gin e sw itc hed off (stop
phase}
• Slow the vehicle to a s top using the brake and
k eep pressing the bra ke pe dal. The engine w ill
switc h off . The
[I] ind icator light appears in the
i nst rument cluste r display and -also
appears in the t rip computer.
• When you take yo ur foot off the b rake peda l,
the engine restarts . The ind icator light tu rns
off .
Add itional informat ion
The eng ine wi ll switch off in the P, D/S and N po
sitions as we ll as in manua l mode. In the P pos i
tion, the eng ine will a lso remain off if you take
your foot off the brake pedal. The engine starts
92
again w hen you select another se lecto r lever po
sition and take your foot off the brake pedal.
If you se lect t he R posit io n dur ing a Stop phase,
the e ngine will sta rt ag ain.
Sh ift from D/S to P qu ic kl y to prevent the eng ine
from starting uni ntent io na lly when sh if ti ng
th rough R.
You can determine for yourself if t he engine w ill
stop o r not by re duc ing or inc reasing the amount
of force you use to p ress the b rake pedal. Fo r ex
amp le, if yo u only ligh tly press o n the brake ped
a l in s top- and and-go traffic or when turning, the
engine will not switch off when the veh icle is sta
tiona ry. As soon as you press the brake down
h arder, the engine will switch off .
{i) Tips
-Press the brake peda l during a stop phase to
keep the vehicle from rolling.
- The igni tio n wi ll turn off if y ou press the
! START ENGINE STOPI * button dur ing a
stop p hase .
- Th e image in the displ ay is s ligh tly d ifferent
in some models.
General information
Applies to vehicles: with Start-Stop-System
The standard Start-S top-mode can be can celled
for different system -related reasons .
Fig. 1 05 In str um ent cl uste r: E ngi ne-Stop te mpo rari ly un
ava ilab le
Engine will not switch off
.... .., .... 0
~ m
Befo re each sto p phase, t he system checks if cer
ta in conditions have been met. For example, t he .,.
..... N
co ~ CX)
..... I.Cl U"I
..... I.Cl .....
engine will no t be switched off in the following
situations:
- The eng ine has not reached the m in imum re
quired temperature for Start-Stop-mode.
- T he interior temperature selected by the A/C
system has not been reached.
- The outs ide temperatu re is ext remely h igh/low.
- The w indshield is being defrosted
¢ page 82.
-The parking system* is switched on.
- The battery charge level is too low.
- The steering whee l is sharply turned or there is
a steering movement.
- After engaging the reverse gear.
- On sharp inclines .
IIJ appears in the instrument cluster display and
§ii;Ff&Ff ~lso appears in the tr ip comp ute r.
Engine automatically re starts
The stop phase is interrupted in the following sit
uations, for example . The eng ine restarts without
any action by the driver .
- The interior temperature varies from the tem
perature se lected in the A/C system .
- The windshield is beeing defrosted
¢ page 82.
- The brake pedal is pressed several times in a
row.
- The battery charge level becomes too low.
- High power cons umption .
IIJ appears in the instrument cluster display and
H§;Ff&Fii ~lso appears in the tr ip comp ute r.
Switching the ignition off autom atically
To prevent the battery from draining, the ignition
will switch off
automati cally when all of the fol
lowing cond itions have been met:
- The veh icle has already been driven.
- The eng ine has been turned off by the Start-
Stop-System .
- The driver's door is opened .
- T he dr iver's seat bel t is removed.
- The brake pedal is not pressed down.
- T he veh icle is stationary .
In this case, the activated low beam will be re
placed by the s ide marker lights . The side marker
D rivi ng
lights will switch of f after approximate ly 30 m i
nutes or when you lock the veh icle.
If t he Start-S top-System has not turned off the
engine or if you have swi tched the S tart -Stop
System off manually, the ignition will
not be au
tomatica lly switched off and the eng ine wi ll con
t in u e to run¢& .
A WARNING <= -
Never allow the engine to run in confined
spaces -danger of asphyx iation.
(D Tips
If you shift into the 0/S or N positions after
shifting into reverse, the vehicle must be dr iv
en faster than 6 mph (10 km/h) in order for
the engine to switch off again .
Switching the Start-Stop -System on /off
manually
App lies to vehicles: wi th Start -S top-Syste m
If you do not wish to use the system, you can
switch it off manually.
= , __ (A)Off _ --"'-- f'~-.::a-----
Fig . 10 6 Cen ter co nsole: S ta rt -Stop -System button
.. To switch the Start -Stop-System on/off man
ually, press the
I CAJ ,,.I button. The LED in the b ut
ton turns on when the system is switched off .
In vehicles without the M MI*, the
!CA.> "'! button is
found underneath the se lector lever.
(D Tips
If y ou swit ch the system off d uring a stop
phase, the engine will st art aga in automati
ca lly.
93
Driving
Messages in the instrument cluster display
Applies to vehicles: with Start-Stop-System
Start-stop system: deactivated. Please
restart engine manually
This message appears when specific conditions
are not met during a stop phase and the Start
Stop -System wi ll
not be able to restart the en
gine. The engine must be started with the key or
with the
! START ENGINE STOPI* button .
Start-stop system: system fault. Function
unavailable
There is a malfunction in the Start-Stop-System .
Drive the vehicle to an authorized repair facility
for servicing as soon as possible to correct the malfunction.
Transmission: Car may roll! Shift to pa rk!
This message appears if the selector lever is not
in the
P position when the driver's door is
opened. You will also hear a warning tone. Shift
the selector lever to the
P position. Otherwise,
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 ex
ceeds a prev ious ly stored maximum speed. A
warn ing tone w ill sound as soon as the vehicle
speed exceeds the set speed by about
3 mph
(3 km/h). At the same time, a wa rning symbo l
appears in the display. The symbol's appearance
might be different in some models.
The speed warning system has
two warning
thresholds that function independently of each
other and that have somewhat different purpos
es:
Speed warning 1
You can use speed warning 1 to set the maximum
speed while yo u are driving. This setting will re
main in effect unti l yo u turn off the ignition, as-
94
suming that you have not changed or reset the
setting .
The speed warning symbol. (USA models)/ .
(Canada models) in the warning 1 disp lay ap
pears when you exceed the maxim um speed. It
goes out when the speed falls below the stored
max imum speed .
The speed warning symbol will also go out if the
speed
exceeds the stored maximum speed by
more than about 2S mph (40 km/h) for at least
10 seconds . The stored maximum speed is delet
ed.
Setting speed warning 1
¢page 95.
Speed warning 2
Storing warning 2 is recommended if you always
want to be reminded of a ce rtain speed, for ex
amp le when you are traveling in a country that
has a genera l maximum speed limit, or if you do
not want to exceed a specified speed for winter
tires.
The speed warning 2 symbol ,. (USA mode ls)/
• (Canada models) appears in the display when
you exceed the stored speed limit. Unlike warn
ing 1, it will not go out until the vehicle speed
drops below the stored speed limit.
Setting speed wa rning 2
¢page 95.
(D Tips
Even though your vehicle is eq uipped with a
speed warning system, you should still watch
the speedometer to make sure you are not
driving faster than the speed limit.
..... N
co ~ CX)
..... I.Cl U"I
..... I.Cl .....
Speed warning 1: setting a speed limit
Warning threshold 1 is set by the IS ET I button .
Fig. 107 SET butto n in t he inst rume nt cluster
Storing the maximum speed
.. Drive at the desired maximum speed.
.. Press the
ISE TI button in the instrument panel
display ¢fig .107for 1 second .
Resetting the maximum speed
.. Drive the vehicle at a speed of at least 3 mph
(5 km/h)
.. Press the
~ IS- ET~I button for more than 2 seconds .
The speed warning symbol. (USA models)/ .
(Canada models) will appear briefly in the d isp lay
when you release the
ISE TI button to indicate
that the maxim um speed has been sto red suc
cessfully.
The maximum speed rema ins stored until it is
changed by pressing the
I S ET I button aga in brief
l y o r until it is deleted by a lengthy p ush on the
button.
Speed warning 2: setting a speed limit
The MMI* or the radio control unit is used to set,
change or delete warning threshold
2.
.. Se lect: I CARI f u nct ion button > Instrum ent
clu ster > Sp eed warning .
Or
.. Se lect: ICARI funct ion but ton> C ar sys tem s*
contro l button > Dri ver a ssist > Speed warning.
Wa rning threshold 2 can be set in the speed
r ange sta rting from 20 mp h to 150 mph (30 km/
h t o 240 km/h) . Settings can each be ad justed i n
intervals of 5 mph ( 10 km/h) .
Drivi ng
Cruise control system
Switching on
The cruise control system makes it possible to
drive at a constant speed starting at 20 mph (30
km/h) .
0
f
~
0
Fig . 108 Co ntrol lever w it h push -b utton
F ig . 1 09 Disp la y: Se lected speed
.. Pull the lever to position ©¢ fig. 108 to
switch the system on.
.,. Dr ive at the speed to be controlled.
.. Press button @to set that speed.
The stored speed and the indicator light
g M 0 :i:
;A
..
~ a: .. m
@;\l)M4 (US model) !&I (Canadian mode l) appear
in the instrument cluster display
¢fig. 109 . The
display may vary, depending on the type of dis
play in your veh icle .
The speed is kept constant by modifying engine power or through an active brake intervention .
A WARNING
--
-Always pay attention to the traffic around
you when the cruise control is in operation .
You are always respons ible for your speed
a nd the distance between your veh icle and
o ther veh icles.
95
,....,
N
co
er::
co
,....,
Hybrid drive
Introduction
Applies to vehicles: with hybrid drive
General informatio n
The hybrid drive is a combined drive concept that
automatically switches between combustion en
gine and electric drive types or combines them.
All work on high voltage systems is intended only
for high voltage technicians and may only be per
formed by authorized service facilit ies in accord
ance w ith Aud i regulations.
T he high voltage system is composed of the fol
lowing h igh voltage components: the high volt
age battery, the power electronics, the electric
motor, the high voltage A/C compressor and the
orange high voltage wir ing.
Hi gh vo ltag e b att e ry
The high voltage battery is located in the luggage
compartment underneath the cargo floor . You do
not need to perform any maintenance work on
the high voltage battery . Additional informat ion
about the h igh voltage battery can be fo und un
der
~ page 104 .
The high voltage battery service plug is also
found underneath an orange cover under the car
go floor. The serv ice plug is provided only for use
by service personnel and must not be
removed by
others who are not trained to use it.
A WARNING
-The voltage in the high voltage system is life
threatening . Touching a damaged high volt
age component can result in a fatal electric
shock. The components in the high voltage
system are marked with a warning label which
warns against the h igh voltage .
- Never perform work on orange high voltage
cables or on high voltage components . Only
authorized repair fac ilities that are certified
may perform work on the high voltage sys
tem .
Hyb ri d
-Never open or remove the service plug cover
in the center of the cargo floor .
- Never damage, alter or
remove the orange
high voltage cable or disconnect it from the
high voltage system .
- Aud i regulations must be followed during
all work performed on the high voltage sys
tem and high voltage components.
A WARNING ,-
While in electric drive mode, the vehicle pro-
duces considerably less idling, driving and op
erating noise than when the combust ion en
g ine is running . This may make it difficu lt or
i mpossible fo r others such as pedestrians and
chi ldren to hear and notice the vehicle when it
i s in elect rical drive mode. Th is can lead to
collisions and injuries, for example in low
traffic areas, when maneuvering or when driv
ing in
reverse.
A WARNING
--Never leave the vehicle unattended while in
the drive ready mode. The vehicle could begin moving if the accelerator pedal is pressed ,
even if the combustion engine is switched off .
This may cause coll is ions and severe or fatal
i njuries. When the vehicle enters dr ive ready
mode, the status message h~
.Jrid rca yap
pears br iefly in the instrument cluster display
and the needle in the power meter points to
READ Y ~page 98 .
-When exiting the vehicle, make sure these
lecto r lever is in the P position, the ignition
is switched off and the hybrid system is de-
activated.
(D Note
- The h igh vo ltage system can be damaged if
the vehicle underbody comes into contact
w ith the ground . Immediately drive your
ve
hicle to an authorized repair facility and
have it inspected.
- Do not transport fluids in open containers in
the luggage compartment. Spilled fluids
can seep underneath the cargo f loor. This
can damage the high voltage system.
97
Hybrid
Starting the vehicle
Applies to vehicles: with hybrid drive
The vehicle is started and turned off either with
the ignition key~
page 84 or w it h the
I S T AR T ENG INE S TOPI button* ¢ page 87 in the
same way as a conven tional vehicle .
When start ing the veh icle, the needles in the in
s trumen t clus ter move upward briefly . When the
veh icle enters drive ready mode, the status mes
sage
hybrid ready appears briefly in the instru
ment cluster display and the needle in the power
meter points to
READ Y¢ page 98 .
Depending on the operation mode of the hybrid
system, there are two possible drive ready modes
after the vehicle has been started:
Driv e re ady mode with combustion engine
If the operat ing req uirements ¢page l00for
elec tric drive mode are n ot met, the combust ion
Power meter overview
Applies to vehicles: with hybrid drive
engine starts the vehicle as usual. You can start
driving as usual.
Drive ready mod e with the el ectric motor
If the operating requirements ¢ page 100 for
the e lec tric dr ive mode are met, the comb ustion
engine rema ins off after starting the vehicle .
(D Tips
To prevent the 12 volt batte ry from discharg
i ng , never leave the vehicle parked in t he d rive
r eady mode . Remove the key from the igni
tion or press the
I S TAR T ENGINE STOP ! but
ton* . When leaving the ve hicle always take
the key with you.
The power meter shows the hybrid drive condition and the availability of the hybrid system.
Fi g. 11 0 Power meter overv iew
An economica l driv ing and recuperation range is
shown in g reen. A driving range that is not eco
nom ical is shown in o range. In addition , the bat
tery status provides informat ion a bout the h igh
voltage battery charge stat us.
98
@ Fuel efficient dr iv ing within the
combust io n eng ine's pa rtial load
r an ge
@ System lim its for electr ic driving in
the EV mode
@ El ectr ic dr iving o r driving with the
combustio n eng ine ( EFFICIENCY)
© Vehicle drive ready (READY)
® H igh voltage battery charge status
@ Recupe ration (CHARG E)
(J) Driving within the combustion en
g ine's full load range
@ 100% combust ion engine
® Boosting - the elect ric engine as
sists the combustion engine (BOOST)
@ E ngaging the conve ntiona l brakes
with recuperat ion
@ Vehicle not drive ready (OFF)
@ EV mode act ive
The need le remains at
OFF whe n the ignition is
turned on. When the veh icle enters drive ready
mode, the status message
hybrid ready appears
briefly in the instrument cluster d isplay and the
needle in the powe r meter poi nts to
READY .
Indicator lights and messages
Applies to vehicles: with hybrid drive
The indica to r li gh ts in the inst rument cluste r
b link or tur n on. They indicate functions or mal
f u nctions .
W ith some ind icator lights, messages may ap
pear and a warning tone may sou nd . A lso note
the ind icator lights in
<=:> page 2 7.
Press brake pedal to start vehicle
This message appears if you do not press the
b rake pedal whe n starting the vehicle.
Shift to N or P to start vehicle
This message appea rs if the selecto r leve r fo r the
automatic transm iss ion is not in the Nor P posi
tions whe n starting the vehicle .
-Hybrid drive: System fault! Power
brakes , steering malfunction pos sible
If the indicator lig ht turns on and th is message
appears, there is a malfunction in the hybrid sys
tem. The brake booster and the power steeri ng
~ may stop working . Stop the vehicle in a safe loca -
co g:; tion as soon as possible.
Hybrid
You may con tinue dr iving i f the indicator light
tu rns off after sta rt ing the ve hicl e several times .
Drive to an authorized repa ir facility immed iate ly
to have the malfunction cor rected .
f#iifj:j;jj,j Hybrid drive: System fault! Contact
dealer
If the indicator light turns on and this message
appea rs, there is a ma lfunction in the hybrid sys
tem. Drive to an autho rized repair fac ility imme
diately to have the malfunct io n corrected.
(II Hybrid system : Performance rest ricted .
Please contact dealer
If the indicator light turns on and this message
appears, there is an eng ine control malfunction .
The
[Ia i ndica to r li ght in the ins trument clus te r
also t urns on. The engine ou tput is red uced .
Dr ive to your authori zed A udi dealer or qualified
r ep air fa cility i mme diate ly to h ave the m alfu n c
t io n corre cte d.
Hybrid drive deactivated. Please restart
engine manually.
T h is m ess age appe ars if t he high vo lt a ge b attery
c h arge leve l h as fallen below a cer tain range or i f
t h e ig nition key is no longer i nsid e the veh icle for
vehicles with the convenience key* .
Start the engi ne w it h eithe r th e ig nitio n key
<=:> page 84 o r wi th the !START ENGI NE STOPI
button* <=:> page 87.
Hybrid battery: Low battery charge. Battery
will be charged while driving.
T h is mess age app ea rs if the high vo lt a ge b att ery
c h arge leve l has fallen be low a certa in range . If
t hi s message turns off afte r a litt le while, the
high voltage battery cha rged enoug h while driv
ing .
If the message does not turn off, have an au thor
ized repair facility cor rect the ma lf u nction as
soon as possib le .
EV mode is currently unavailable.
Th is me ssa ge appears if the con ditions
<=:> page 10 0 for enhanced ele ctric drivi ng ar e not
met. Try aga in at a late r time .
99
Hybrid
Hybrid functions and operating modes
Applies to veh icles: w ith hyb rid drive
Fig. 111 Center console: a• butto n
"'To turn on EV mode, press the 1.,,.,, 1 button. The
indicator light in the button will turn on. The
• indicator light also turns on in the instru
ment cluster disp lay.
The functions and operating modes described be low are selected automat ically by the vehicle con
trol system, depending on the vehicle operating
status. This ensu res that the vehicle is always in
the correct operating mode. One exception is the
enhanced elect ric driving mode
(EV mode), wh ich
is activated by the driver ¢
page 100.
Driving with the combustion engine
The vehicle is powered by the combustion eng ine.
The high voltage battery is charged simultane
ously, if needed .
Full acceleration (boost)
In full acceleration, the vehicle is powered by both the combustion eng ine and the electric mo
tor . This operating mode is called
Boost and is
only available for a short amount of time because
it uses so much energy. Ava ilability depends on
the high voltage battery charge level.
The boost operating mode is act ivated by press
ing the accelerator pedal all the way down.
Electric driving
The vehicle can be driven completely electrically
depending on the high voltage battery charge
level and the driving resistance. The combust io n
engine tu rns off at that time.
100
The combustion engine starts when accelerating
or when the high voltage battery charge level
drops below a certain threshold. The vehicle re
sumes electric driving once the acceleration and
the high voltage battery charge leve l permit .
Enhanced electric driving mode (EV mode)
Pressing the
i"*'I button ¢ fig. 111 can extend the
usual limits on e lectric driving so that you can a l
ways dr ive in electric mode, if the condition of
the electrical system permits. The operating mode is then set to maximum electr ic drive @,
@ ¢page 98, fig. 110. It can be driven com
pletely electrically for up to 1.8 miles (3 km) at a
constant
37 mph (60 km/h).
The following conditions must be met to activate
the enhanced electric drive:
- The high voltage battery must be sufficiently
charged.
- Th e temperature of the
12 volt batteries and
the high voltage battery must be sufficient.
- The vehicle speed must not be higher than
62 mph (100 km/h).
- The transmission must not be in tiptronic
mode .
- Offroad mode and hi ll descent assist must not
be turned on
r::!> page 191.
The combustion engine turns on and interrupts
the enhanced elect ric drive mode when the vehi
cle is acce lerated. The gray indicator light
II al
so turns on in the disp lay. The enhanced electric
drive mode resumes automatically once acce lera
tion stops.
The enhanced electric drive mode is deactivated
if at least one of the following conditions is met:
- Th e ig nition is turned off.
- T he
l~ ·I button is pressed again .
- The high voltage battery charge level is low .
- The vehicle speed is higher than approximately
62 mph (100 km/h).
- The
S selector lever position or tiptronic mode
is selected.
- Offroad mode or hill descent assist is switched
on.
The
i oa!• I button must be pressed to reactivate it. ..,.