engine AUDI S6 2008 Workshop Manual

• ..__A_ u_ t_ o_ m_ a_t _i c_ t_ r_ a _ n_ s_m _ is_ s _ io_ n _____________________________________________ _
App lies to vehic le s : w ith mul tit ron ic ® Cont inuous ly Varia ble Transm ission ( CVTl
Driving the multitronic ®
The gear ratio is continuously adapted to vehicle speed
and load .
Starting th e engin e
- The selector lever must be in N or P.
Start in g off
- Press and hold the bra ke pedal.
F ig . 1 58 Sec tion o f the
c en ter conso le:
sele ctor leve r w ith l ock
b utt on
- Press and hold the release button in the selector lever
handle and move the selector lever from
P (alternatively
N ) to D (a lternatively S ) and release the button .
- Wait br ie fl y until t he transm iss ion has shifted (you w ill
feel a slight movement ).
- Remove your foot from the brake pedal and acce lerate
~ & -
Ro cking ba ck and forth to b ecom e un stu ck
- Shift only between D and R when the vehicle is at a full
stop and the engine is running at idle speed .
Stopping
-Press and hold the brake pedal until the vehicle has come
to a comp lete stop.
- Keep the brake pedal depressed so that the vehic le
cannot ro ll forward or backward while it is idling ~& .
Once stopped,
do not depress the acce lera to r pedal to
rev up the engine::::!>&.
Pa rking
- Press a nd hold the brake peda l until the vehicle has come
to a comp lete sto p.
- Set the park ing brake firmly ~
page 130, "Park ing".
- Press and hold the release button in the selector lever
handle , move the selecto r leve r into
P and then let go of
the release button
~ & .
Your vehicle is equipp ed with a sta rtin g assist that a llows for easier
starting on inclines . The sys tem is activated when the brake peda l is
d epr essed for a
few se co nd s. Aft er r eleasing the brak e peda l, the
brake power is held for a moment to prevent the vehicle from rolling
back when starting .
The se lector lever must be in
N or P. If one of the driving positions
is engaged a safety switch wi ll prevent the engine from being
started. Se e also =>
page 125.
Before you move the selector lever from the P position, you must
a lways apply the brake pedal before and while depr ess ing the
button in the handle of the selector lever .
& WARNING
• Unintended vehicl e movem ent can cau se seri ous injury.

Automatic transmission 1111111 __________________________ ___;__:..;____;_ ______ _
& WARNING (continued )
-When the selector lever is in a driving position , the vehi cle
may creep , even at idle speed . Therefore do not release the
parking brake or foot brake until you are ready to move ,
because power is transmitted to the wheels as soon as a
driving position is engaged.
- Do not accelerate while selecting a driving position. At this
time the engine must be at idle speed so that undue stress is
not placed on the clutches in the transmission.
- Remember : - even when stopped briefly with the automatic
transmission in "D", "S" or "R" , engine power is being trans ­
mitted to the wheels . Your vehicle could "creep " forward or
backward . When stopped , keep the brake pedal fully depressed
and use the parking brake if necessary to keep the vehicle from
rolling .
- If the sele ctor lever is unintentionally moved into N while you
are driving , take your foot off the accelerator pedal and wait for
the engine to return to idle speed before selecting a driving
position .
- Never shift into "R " or "P " when the vehicle is in motion .
- Never get out of the driver's seat when the engine is running.
- If you must get out of the vehicle , move the selector lever
securely into the P position and apply the parking brake firmly .
- If the engine must remain running, never have any driving
position engaged when checking under the hood. Make sure
the selector lever has securely engaged and is locked in "P "
with the parking brake firmly set :::::, page 289, "Engine
compartment ". Otherwise , any increase in engine speed may
set the vehicle in motion , even with the parking brake
applied .•
Controls and equip ­
ment
Ap plies to vehic les : wit h m ultit ron ic® Conti nuous ly Va riable Transm ission (CVT)
Selector lever positions
This sec tion des cribes th e sele ctor lev er positi ons an d
dr iv ing ra ng es.
Fig . 159 Display in the
instrument clu ster:
se lector lever in posi ·
tion P
Th e se lecto r le ver p ositi on engag ed app ear s ne xt to th e selec tor
lev er as well as in the instrument cluste r disp lay .
P -Park
In this s electo r lever position the transmission is mechanica lly
lo cke d.
Eng age P on ly when t he veh ic le is completely stopped=> 11::::. in
" Dr ivin g th e multitroni c®" on page 160
T o s hift int o or out o f pos ition P , you m ust fi rs t p ress a nd h old the
brake peda l and then press the r elease button in th e se lector lever
h an dle whi le m oving the sele ctor l ev er to P .
R - Reverse
The tra nsm issio n w ill automat ica lly se lect the lowest gear ratio
when you sh ift into reverse .
S ele ct R only wh en th e ve hicle is at a
fu ll sto p and t he engine is
running at id le speed :::::, 11::::. in "Driving t he multitron ic®" on
page 1 60.
I • •

• ..__A_ u_ t _o_ m_ a_ t_ i_ c _ t_r _a _n_ s_ m_ is_ s_i o _ n ________________________________________________ _
Before you move the selector lever to R, press both, the button in the
handle of the selector lever
and the brake pedal at the same time .
When the ignition is on, the backup lights illuminate when the
selector lever is moved into R.
N -N eutr al
Sh ift to this position for standing with brakes applied=> page 762.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake before and while moving the
lever out of
N .
Do not use N for coasting downhill.
D -Normal dr iving po sition f or forward
Depending on the load on the engine, vehicle speed and the
dynamic control program, the transm ission will select the
optimal
gear ratio.
In certain circumstances it may be advantageous to temporarily
switch to the manua l shift program to manually select gear ratios to
match specific driving conditions=>
page 164.
When the vehicle is s tationary or at speeds below 3 mph (5 km/h),
you must always apply the footbrake before and while moving the
lever to
D ou t of N.
S -Spor t p osition
Select this position for sportier performance. In this position, the
transmission wil l not upshift as soon, allowing the vehicle to use the
increased power avai lable at higher engine speeds to achieve live ­
lier acceleration.
When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the foot brake before and whi le moving the
lever to
S out of N .
& WARNING
Re ad a nd follo w all WARNIN GS=> & in "Dr iv ing th e multitr oni c®"
on
page 160 .
0 Note
Coasting downhill with the transm ission in N and the engine not
operating will result in damage to the automatic transmission and
possibly the catalytic converter. •
Applies to vehicles: with multitronic® Continuous ly Variable Transmission (CVT)
Automatic Shift Lock (ASL)
The Automatic Shift Lock safeguards you against acciden­
tally shifting in to a forward or the reverse gear and
causing the vehicle to move unintentionally.
F ig . 160 Shift gate:
se lect or l ever loc k
pos it ions a nd int erl ock
butt on high lighted
The selector lever l ock is rel eased as f ollows :
T u rn the ignition on .
Step on the brake peda l.
At the same time press and hold
the interlock button on the side of the gear selector knob
=> fig. 160 with your thumb until you have moved the
selector lever to t he desired position.
~

_________________________________________________ A_ u_ t_ o_ m_ a_t_ i_c _ t_ra _ n_s_ m __ is_s_ io_ n __ lllll
Autom ati c selec to r l eve r lock
The se lector lever is locked in the P and N positions when the igni ­
tion is turned on . To move the lever from these positions the driver
must depress the brake pedal. As a reminder to the driver, the
follow ing warning appears in the instrument cluster disp lay when
the selector is in
P and N :
When stationary app ly footbrake while selecting gear
A time delay e lement prevents the selector lever from locking when
it is moved through the
N position (going from R to Dl. The locking
e lement will lock the selector lever if the lever is left in N (Neutral)
for more than approximately 1 second, without the brake peda l
being pressed.
At speeds above about 3 mph (5 km/h) the Automatic Shift Lock is automatically deactivated in the
N posi tion .
Interl ock button
The lock button on the selector lever prevents the lever from being
accidentally shifted into certain posit ions. Pressing this button
deactivates the selector leve r lock. Dependi ng on the direction of
the shift, the se lector lever locks at different positions . The positions
are highligh ted in the illus trati on =>
page 162, fig . 160.
Igniti on k ey saf ety in te rlo ck
The key canno t be removed from the ignition un less the selector
lever is in the
P park position . When the ignition key is removed, the
selector lever wil l be l ocked in the
P posi tion .•
Ap plies to veh ic les : w ith mu ltitro nic ® Cont inuous ly Va riab le Transm iss io n (CVT )
Kick-down
The kick- down feature allo ws the ve hic le to generate
maximum acceler ati on .
When you press the acce lerator pedal beyond the resistance point
t hat is reached at ful l th rottle, the transmission wi ll select a lower
gear ratio based on vehic le speed and engine RPM. The engine RPM
Controls and equip ­
ment
wi ll be control led to produce maximum vehic le acceleration as long
as yo u conti nue to press the acce lerato r pedal beyond this resis ­
tance point .
& WARNING
Be careful when us ing the ki ck-down feature on slippery roads .
Rapid acceleration may cau se the vehicle to skid . •
Ap plies to veh icles : wi th mu ltitro nic® C ontinuou sly Vari ab le Tra nsm iss ion (C VT)
Dynamic shift program (DSP)
The multitronic® tr ansmissi on is elect ro nic ally
controlled.
The transmission se lects the appropriate gear ratio (upshifts and
downsh ifts) automatical ly based on preset driving programs.
The transmission wil l select one of the
economy programs when
yo u drive at a steady speed or a gra dually changing speeds without
heavy acceleration . T his gives best fuel efficiency, with early
upshifting and delayed downshif ting .
The transmission will au tomat ically select the
s porty shift programs
when you drive at higher speeds, or with heavy acce leration and
freque ntly changing speeds . Upshifts are delayed to make full use
of engine power. Downshifting takes place at higher engine speeds
t han in t he economy programs .
The se lection of the most suitable shift program is a continuous,
automatic process . The driver can also make the transmission
sw itch to a spor ty progra m by
quickly pressing down the gas peda l.
This causes the transmission to shift down into a lower gear ratio and makes qu ick acceleration possible (to pass another vehic le) You
do not need to press the gas peda l into the kickdown range . After
the trans missi on has upshifte d, the o riginal p rogram is selected
according to your driving style . _.,
I • •

-L~A~u~t~o~m~a~t ::,:i c~t::!r.!:a~n~ s~m!.!!:i s~ s ~ io~n :..._ ____________________________________________ _
An additional shift program allows the automat ic t ransmission to
select the p roper gear for uphill and downhill gradients.
This prevents the transmission from shifting up and down unneces­ sari ly on hills. The transmission will shift down to a lower gear ratio
when the driver presses the brake pedal on a downhill gradient . This
makes use of the braking effect of the engine without the need to
shift down manually.
If you are driving in hills and mountains, the transmission will
continuously adjust the gear ratio to the road grade. If you press the
brake pedal when driving downhi ll, the transmission will down shift
automatically . This increases the braking effect of the engine .
If the cru ise control is on when you are traveling downh ill, the trans ­
mission will automatically select a lower gear ratio in order to main ­
tain the set vehic le speed . This wil l cause the engine speed to
increase. •
Applies to v ehicles: wit h mult it ro n ic® Co ntin uous ly V ariab le Tra nsm iss io n (CVT )
tiptronic ® manual shift program
Using the manual shif t program ( tiptronic® J you can
manually shift between seven pre-programmed gear
r at io s ( tra nsmission p ositi ons).
Fig . 16 1 Center
c onsole : shifting
m anu ally
(0
Fig . 16 2 Disp lay:
m anu al s hift pro gra m ,
se lecte d gear h igh ­
li gh ted
Switching to manual shift program
With the se lector lever in
D, push lever to the right. The
display will show 7
6 5 4 3 21 as soon as the selector lever
is switched over. The gear yo u select w ill also be high­
ligh ted in the displ ay => fig. 162.
To upshift Push the se lector lever forward to the p lus position
=> fig. 161 0-
To downshift
- Pu sh th e lever t o the m inus posi tion
Q .
When accelerating, the transm ission will automa tically shif t into the
next higher gear before the engine reaches the maximum RPM .
When accelerating, if you apply a light throttle, the tiptronic® will
automatically shift into the next higher gear to save fuel. If you apply
a heavy thrott le, the transmission wi ll stay in gear engaged until
n ear maximum RP M are reached, or until the driver manually shifts
into a higher gear.
If you take your foot of f the accelerator peda l when driving down a
steep inc line, the tiptronic ® will downshift from the selected gear
into the next lower gear based on road speed a nd eng ine RPM . The _,,

_________________________________________________ A_ u_t_ o_ m_ a_t _i _ c _ t _ra_ n_s_ m __ is_ s_ io_ n _ __.1111
automatic downshifting is interrupted as soon as you apply throttle
again .
[ i J Ti ps
• When you shift into the next lower gear, the engine will down ­
shift only when there is no possibility of over-revving .
• When the kick-down comes on, the transmission will sh ift down
to a lower gear depending on vehicle and engine speeds.
• The tiptronic® is inoperative when the transmission is in the fail­
safe mode .•
Ap plies to vehic les: with multit ron ic® Continuous ly Variable Transm ission (CVT)
Steering wheel with tiptronic ®
The shift buttons on the steering wheel allow the driver to
shift gears manually.
Fig . 163 S teering
w heel : S hift butt ons
- To downshift, touch the button on the left Q.
- To upshift, touch the button on t he right G) .
The shift buttons are activated when the selector lever is in D, Sor
in the manual shift program (tiptronic).
Contro ls and eq uip­
ment
Of course, you can continue to use the manual shift program with
the selector lever on the center console. •
Applies to vehicles : with multitronic® Continuously Var iable Transm ission (CVT )
Fail -safe mode
If the multitronic® suffers a malfunction the fail-safe
mode maintains minimum driveability.
In the event of particular system malfunctions, the automatic trans­
mission switches to the fail-safe mode . This is signal led by all the
segments in the display illuminating or going out.
You can continue to move the selector lever to all positions. The
manual shift program (tiptronic) is switched off in the fail-safe
mode.
You can continue to use reverse gear. But the electronic lockout for
reverse gear is turned off .
0 Note
If the transmission switches to fail-safe mode, you should take the
vehicle to an authorized Audi dea lership as soon as poss ib le to have
the condition corrected. •
Vehicle care I I irechnical data

____________________________________________ A_ d_a--' p=-- t_iv _e_ A_ ir_ S_u_ s-=- p_e _ n_ s _ io_ n __ lllll
Ap plies to vehicl es: wi th Adap tive Ai r Su sp ension
Chassis controls
Four different driving modes can be set by the driver.
The automatic contro l processes are speed -and time -dependent.
For example, it is not possib le to raise the suspension to the lift
mode above certain speeds.
L ev el a djustment
automatic
dynamic
aut om ati c Ground clearan
ce
about 4.7 - 4 .1 inches
(120 -105 mm)
about 4.7 inches (120 mm)
about 4.1 inches (105 mm)
a bo ut 5.3 inches ( 135 mm)
Se lect the automatic mode i f you p refer suspension and damping
settings emphasizing comfort .
• Low ering : When a speed of about 75 mph (120 km/h) is exceeded
for more than 30 seconds, the vehicle is automatically lowered by about 0.6 inch (15 mm) to the dynamic level which is more suitable
for highway speeds. Road holding is optimized as a result of the lower center of gravity and fuel consumption is reduced as a result
of reduced wind res istance.
• Rais ing : The vehicle is automatically raised again if the speed
falls below about 44 mph (70 km/h) for a period of 2 minutes . The
vehic le is raised immediate ly when speed falls below about 22 mph
(35 km/h).
s ta nd ard
Select the standard mode if you desire a suspension setting with a
special emphasis on comfort. In the standard mode there is
no
lowering of the suspension. Even a t high speeds, the vehicle stays
at the same level. Damping characteristics with a decided emphasis
on comfort are selected in this mode.
Controls and equip ­
ment d
y n ami c
Select the dynamic mode if you prefer a sporty suspension setting .
In this mode, the vehicle is lowered whi le it is still stationary and
spo rty damping characteristics are selected . The warn ing light
c.::i
in the instrument cluster will come on for a few seconds just to
remind you of the reduced ground clearance .
If y ou switch off the engine wh ile the ve hicle is in the dynamic mode
and then switch on the ignition once again, the
c.::i warning light
wi ll also come on again f or a few seconds as a reminder .
lift
Select the lift mode when you have to travel over poor sect ions of
road (e .g. trails). In the lift mode, the vehic le is raised by 0.6 inch (15
m m) compared to norma l leve l while it is stil l stationary and
damping characteristics are adjusted to emphasize comfort .
The lift mode can be activated only at speeds below 50 mp h (80
km/h) . When a speed of about 62 mph (100 km/h) is exceeded, the
system automatical ly leaves lift mode and the mode set previously
(standard, automat ic, dynam ic) is activated aga in. •
App lies to v ehic les : with Ada ptive Air Suspens io n
Setting the driving modes
The driving modes are set in MM/.
Fig . 18 2 MMI di splay:
Settin gs _,.
I • •

• ..__H_ o_ m_ e_ L_in _ k_® ____________________________________________________ _
Homelink®
Universal remote control
Applies to vehicles: w ith Home Link® universal remote control
General information
The Homelink® feature can learn the up to three radio
frequency codes for most current transmitters used for
operating garage doors, estate gates, home or outdoor
lighting systems, and other devices.
You must first program the Homelink® transmitter before you can
use the system=>
page 186, "Programming the Homelink® trans­
mitter".
In order to program the Homelink® transmitter for devices utilizing
rolling code, a second person on a ladder who can safely reach the
garage door opener motor is recommended. It is also necessary to
locate the "learn" button on your garage door opener motor. Refer
to the operating instructions for the opener, as the location and
color of this button may vary by manufacturer.
You can still use the original remote control for the device at any
time .
& WARNING
• Never use the Homelink"" transmitter with any garage door
opener that does have not the safety stop and reverse feature as
required by federal safety standards. This includes any garage
door opener model manufactured before April 1, 1982.
• A garage door opener which cannot detect an object, signaling
the door to stop and reverse does not meet current federal safety
standards . Using a garage door opener without these features
increases risk of serious injury or death .
& WARNING (continued)
• For safety reasons never release the parking brake or start the
engine while anyone is standing in front of the vehicle.
• A garage door or an estate gate may sometimes be set in
motion when the Homelink ® remote control is being
programmed . If the device is repeatedly activated, this can over­
strain motor and damage its electrical components -an over­
heated motor is a fire hazard!
• To avoid possible injuries or property damage, please always
make absolutely certain that no persons or objects are located in
the range of motion of any equipment being operated. •
Applies to vehicles: wit h Home link® universal remote contro l
Programming the Homelink ® transmitter
The transmitter is programmed in two phases. For rolling
code transmitters, a third phase is also necessary.
Fig . 185 Overhead
console: Homelink ®
keypad ...

HomeLink®
------------------------------------
Fig. 186 Front bumper ,
passenger side: loca­
tion of transmitter unit
Phase 1: programming the overhead keypad
1. Make sure your vehicle is within operating range of the
remote controlled garage door opener.
2. Set the parking brake::::>
& in "Genera l information".
3. Turn the ignition on. Do not start the engine!
4. Press and hold the two outside Homelink® buttons
(D
and @for approxim~tely 20 sec_onds until indicator
light ©::::>
page 186, fig. 185 begins to flash. Then
r elease both buttons. Do not hold the buttons for longer
than
30 seconds.
- This procedure only needs to be performed
once . It
erases the factory-set default codes and does not have to
be repeated to program additional remote controls.
5. Press and hold the Homelink® button
(D, ® or@ until
the indicator light © starts flashing
slowly. Release the
button .
-The system will now remain in programming mode for 5
minutes. Go to the front of the vehicle and proceed with
phase 2.
Contro ls and eq uip­
ment
Phase 2:
programming the bumper mounted transmitter
6. Hold the original remote control at a distance between 0-
5 in. (0-13 cm) from the bumper below the appropriate
headlight for your vehicle::::> fig.
186 (use the shortest
distance possible).
7. Aim the remote control just below the
passenger side
headlight.
8. Press and hold the activation button on the remote control.
- May be different in Canada. If so, press and re-press
(cycle) the activation button on your remote control every
two seconds .
9. The emergency flashers will flash
three times (after
about
15-60 seconds) when the programming is
successful. Release the button on the remote control.
-To program more devices, repeat steps 4 to 9.
10. Press and hold the trained Homelink® b utton and
observe the indicator light© ::::>
page 186, fig. 185.
If the indicator ligh t is solid/continuous, programming is
complete and your device should activate when you press and release the trained Homelink® button.
- If the indicator light blinks rapidly for 2 seconds and is
th en a solid/continuous light, proceed with phase 3 to
program a rolling code device.
Phase 3: rolling code programming
-A second person on a ladder who can safely reach the
garage door opener motor is recommended. .,_
Vehicle care I I irechnical data

- Make sure that your passengers also buckle up and prop­
erly wear their safety belts.
- Protect children with a child restraint system appropriate
for the size and age.
The warning light 4,-in the instrument cluster lights up when the
ignition is switched on as a reminder to fasten the safety belts . In
addition , you will hear a warning tone .
After the ignition is switched on, the warning light in the instrument cluster will always come on for about 6 seconds and if the driver has
not fastened the safety belt , a warning tone will also sound for
about 6 seconds. As soon as the driver has fastened the safety belt,
the warning tone will stop and the warning ligh t will go out .
If the driver or front seat passenger have not buckled -up within
about 10 seconds after the warning tone has stopped and the
vehicle is moving faster than about 15 mph, the warning tone will
sound again for about 6 seconds and then stop for 24 seconds and
then repeat this reminder sequence for a maximum of 2 minutes . At
speeds below 5 mph, the warning tone will not sound.
Fasten your safety belt and make sure that your passengers also
properly put on their safety belts.
& WARNING
• Safety belts are the single most effective means available to
reduce the risk of serious injury and death in automobile acci­
dents. For your protection and that of your passengers, always
correctly wear safety belts when the vehicle is moving.
• Failure to pay attention to the warning light that come on,
could lead to personal injury. •
Safety first
Safety belts
Why safety belts?
Frontal collisions and the law of physics
Frontal crashes create very strong forces for people riding
in vehicles.
Fig . 193 Unbelted
occupants in a vehicle
heading for a wall
Fig. 194 The vehicle
crashes into the wall
The physical principles are simple. Both the vehicle and the passen­
gers possess energy which varies with vehicle speed and body
weight . Engineers call this energy "kinetic energy."
The higher the speed of the vehicle and the greater the vehicle's
weight, the more energy that has to be "absorbed" in the crash.
Vehicle speed is the most significant factor . If the speed doubles
from 15 to 30 mph (25 to 50 km/h) , the energy increases 4 times!
~
Vehicle care I I Technical data