engine AUDI A4 AVANT 2008 Service Manual

___ T_ r_a _ n_ s_m_ i_ s _s_ i_ o_ n ________________________________________________________ _
Before you move the selector lever from the P position, you must
always apply the break peda l before and wh ile depressing the
button in the handle of the selector lever.
& WARNING
• Unintended vehicle movement can cause serious injury .
- When the selector lever is in a driving position , the vehicle
may creep even at idle speed . Therefore do not release the
parking brake or foot brake until you are ready to move ,
becau se power is transmitted to the wheels as soon as a
driving po sition is engaged .
- Do not accelerate while se lecting a driving po sition . At this
time the engine must run at idle speed so that no undue stress
will be pla ced on the automatic clutche s in the tra nsmiss ion .
- Remember :
-even when stopped briefly with the automatic
transmis sion in
"D ", "S ", or "R ", eng ine power i s being tran s­
mitted to the wheels . Your vehicle could
" creep " forward or
back ward . When at a stop , keep the bra ke pedal fully
depressed and use the parking brake if necessar y to keep the
vehicle from rolling.
• If the selector lever i s unintentionally moved into N while you
a re driving , take your foot off the ac ce lerator pedal and wait to idle
speed before select ing a driving pos ition.
• 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 mu st get out of the veh icle , move the selector lever
securely into the P position and apply the parking brake firmly.
• If the engine mu st keep running , never h ave any driving posi­
tion engaged when checking under the hood. Make sure the selecto r lever has securely engaged and locked on
"P " with the
parking brake firmly set.
=> page 265 , "Engine compartment ".
Otherwise , an y increase in engine speed may set the vehicle in
motion , even with the parking brake applied. •
Applies to vehic les : w it h 6- spee d aut omat ic t ra n smi ssio n
Selector lever positions
This sec tion describes t he selecto r lever positions and
drivin g ranges.
Fig . 14 8 Display in the
in strument clu ste r:
s e lec to r lev er in pos i­
tion D
The selector lever position engaged appears next to the selector
lever as well as in the ins tru ment c luste r disp lay.
P -Park
In this selector lever position the t ransmission is m echanically
locked .
En gage
P on ly when the veh icle i s completely stopped => & in
"Drivin g the 6 -speed automatic transmiss ion" on page 143.
To shift in or out of position
P , you must first press and hold the
brake peda l and then press the release bu tton in the selector lever
handle while moving the selector lever to
P .
R -Reverse
The transmission will automatically select the lowest gear rat io
wh en y ou shi ft into reverse .

_______________________________________________________ T:...:.; ra::.:.. n:.:s:.: m
:..:.:.:.: is::::s::.:.: io::.:.. n:__JIIII
Select R only when the vehicle is at a full stop and the engine is
running at idle
speed.~ & in "Driving the 6 -speed automatic trans ­
mission" on
page 143.
Before you move the selector lever to R, press both, the button in the
handle of the selector lever
and the brake peda l at the same time.
When the ignition is on, the backup lights i lluminate when the
selector lever is moved into R.
N -Neutral
Shift to this position for standing with brakes applied ~ page 145.
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.
D -Normal driving position for forward
Position Dis for norma l city and highway driving. It ranges from zero
to top speed and all six gears automatically shift, depending on
engine load, driving speed and automatically selected shift
programs.
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 out of
N to D or S.
In certain circumstances it may be advantageous to temporarily
switch to the manual shift program to manually se lect gear ratios to
match specific driving
conditions~ page 147.
S -Sport position
Selec t this position for sportier performance. In this position, the
eng ine wi ll not upshift as soon, allowing the vehic le to use the
increased power avai lable at higher engine speeds to achieve live­
lier acceleration.
Before you move the selector lever from
D to S, press the button in
the handle of the selector lever.
Controls and equip ­
ment
LJ}. WARNING
• Always read and heed WARNINGS ~ & in "D riving the 6-speed
automatic transmission" on
page 143.
0 Note
Coasting downhill with the transmission in N and the engine not
operating will result in damage to the automatic transmission and
possibly the catalytic converter. •
Applie s to vehicles: wi th G·sp eed automatic tra nsm iss ion
Automatic Shift Lock (ASL )
Automatic selector lever lock prevents you from acciden ­
tally shifting into a forward gear or into reverse , thus
causing the vehicle to move unintentionally.
Fig. 149 Shift gate:
selector lever lock
positions and interlock
button highlighted
The selector lever lock is re lease d as follows:
-Turn on the ignition .
irechnical data

___ T
_ r_a _ n_ s_m _ i_s _s _i_o _n ______________________________________________________ _
- Step on the brake pedal. At the same time press and hold
the lock button -green
st ub-=> page 145, fig. 1 49 w it h
your t humb until you have moved the se lector leve r to
the desired posit ion.
Au toma tic selec tor le ver lo ck (IS,
The se lector lever is locked in the P and N positions when the igni ­
t io n is turned on .
When the selector lever is in the
P or N positions, the message
When station ary app ly footbr ake while sele ct ing ge ar
appears on the instrument c luster display on vehicles equipped
with the Driver Information System as a reminder to the driver. I
addition, the symbo l
53 will light up on the shift gate at the base of
the selector lever.
A time delay e lement prevents the se lector lever from locking when
it is moved through the
N position (going from R to D ). The locking
element will lock the selector lever if the lever is left in N (Neutral)
for more than approximate ly 1 seco nd, 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 position .
The button needs to be pressed to shift from
D to S to avoid unnec ­
essari ly high fuel consump tion in the
Sport mode.
Int erlock button
The lock button on t he se lector lever preve nts the lever from bei ng
accidentally shifted into certain positions. Pressing this button
deactivates the selector leve r lock.
Depending on the direction of shift, the se lector lever locks at
different positions. The positions are highlighted in the il lustration
above~ page 145, fig. 149 .
Ignition ke y sa fe ty int erlo ck
The key cannot 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 will be locked
i n the
P position. •
Applies to vehicles : with 6-speed automatic transmiss ion
Kick-down
T he kick-down feature allows the vehicle to generate
maximum acceleration.
When you press the accelerator pedal beyond the resistance point
that is reached at fu ll thrott le, the transmiss ion w ill se lect a lower
gear ratio based on the vehicle speed and engine RPM . T he engine
RPM w ill be contro lled to produce maximum veh ic le acce leration as
long as you keep pressing the accelerator peda l beyond this resis ­
t ance point.
& WARNING
Be c are ful when u sing the ki ck-down on slippery ro ads. R apid
a cc elerat ion m ay ca use skidd ing .
•
Ap plies t o vehic les : with 6-s pee d auto mat ic tran smi ssi on
Dynamic Shift Program (DSP)
The automatic transmission is electronically controlled.
The transm ission is self adapting and wi ll automatically se lect the
best shift program suited to the driving conditions and driving style.
The transmission wil l se lect one of the
e conomy programs when
you drive at a steady speed or a gradually changing speeds without heavy acce leration. This achieves optimum fuel efficiency, with early
upshifting and delayed downshifting.
~

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_ a_ n_s_ m __ is_ s_ io_ n _ ___._
The transmission wil l automatically select the s port y shift programs
when you drive at higher speeds, or wi th heavy acceleration and
frequently changing speeds . Upshifts are delayed to make full use
of engine power. Downshifting takes place at higher engine speeds
than in the economy programs.
The selection of the most suitable shift program is a continuous, automatic process. The driver can a lso make the transmiss ion
switch to a sporty program by
qu ick ly pressing down the gas pedal.
This causes the transmission to shift down to a lower gear to
achieve rapid acceleration, e.g . for quickly passing another vehicle.
You do not need to press the gas pedal into the kick -down range.
After the transmission has upshifted, the original program is selected according to your driving style .
An additional shift program allows the automatic transmission to select the proper gear for uphill and downhill gradients .
This keeps the transmission from shifting up and down unneces ­
sari ly on h ills. The transmiss ion wil l shift down to a lower gear when
t he drive r presses the brake pedal on a downhi ll gradient. This
makes use of the braking effect of the engine without the need to
manual ly shift down .
With th is function, the transmission will only shift down as far as
second gear.
•
Controls and equip ­
ment
App lies to ve hicles: w ith 6-speed automat ic tra nsmission
tiptronic ® manual shift program
Using the manual shift program you can manually select
gears.
0 F ig . 150 C enter
c on sole: shifting the
tip tro ni c® manu ally
F ig . 151 Dis play:
man ual shift pr ogr am ,
s el ec te d gea r high -
li g ht ed
.,,_
irechnical data

___ T_ r
_ a_ n_s _m_ i_s _s _i_o _n ___________________________________________________ _
Switching to manual shift program
With the selector lever in D, push lever to the right. The
display will show
6 5 4 3 2 1 as soon as the selector lever
is switched over. The gear you select will also be high­
lighted in the display =>
page 147, fig. 151.
To upshift
- Push the selector lever forward to the plus position
=>
page 147, fig. 150 0-
To downshift
- Push the lever to the minus position Q .
When accelerating, the transmission will automatically shift 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 from 1st to 2nd gear to save fuel. If you apply a
heavy throttle, the transmission will stay in the gear engaged until
near maximum RPM are reached, or until the driver manually shifts
into a higher gear.
If you take your foot off the accelerator pedal when driving down a
steep incline, the tiptronic® will downshift from the selected gear
into the next lower gear based on road speed and engine RPM. The
automatic downshifting is interrupted as soon as you apply throttle
again.
[ i ] Tips
• When you shift into the next lower gear, the engine will down­
shift only when there is no possibility of over -revving.
• When the kickdown comes on, the transmission will shift 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 v ehi cle s: with tipt ronic -st ee ring whee l
Steering wheel with tiptronic ®
The shift buttons on the steering wheel allow the driver to
shift gears manually.
Fig. 152 Steering
wheel: Shift buttons
-To downshift, touch the button on the left Q.
- To upshift, touch the button on the right 0-
The shift buttons are activated when the selector lever is in D, Sor
in the manual shift program (tiptronic).
Of course, you can continue to use the manual shift program with
the selector lever on the center console. •

_______________________________________________________ T_ ra_ n_s_ m
__ is_s_ io_ n __ llll
Appl ies to vehicles: wi th 6-speed automatic transm is sion
Fail-safe mode
If the tiptronic® suffers a malfunction, the fail-safe mode
maintains minimum driveability.
If there is a malfunct ion in t he system, the automatic transmiss ion
wi ll shift to the fai l- safe mode. Al l the segments in the display will
l ight up to indicate th is condi tion .
Display col ors inv ersed
If there's a ma lfunction in the system, the automatic transmission
wi ll shift to the fail -safe mode. The entire row of gear selector posi ­
t ions wi ll light up in the d isplay in inverse colors ( light background,
dark characters) to indicate this condition . If there is an electrical
f ailure, t he gear posi tion ind ica tor row wi ll turn blank .
You wi ll sti ll be able to put the se lected lever in any of the positions .
However, the transmission will remain in 4th gear when it is placed
in positions D and S.
[ i ] Tip s
• The electronic lock that protects t he reverse gear while driv ing is
inoperative when the transmission is in the fail- safe mode .
• The manua l shift program is inoperative in fail -safe mode .
• The transm ission aut omatically shif ts to and rema ins in 4t h gear
regard less of which of the forward gears is selected. This means
that it may not be possible to tow a t rai ler or to drive uphill on a
steep gradient. Reverse gear can sti ll be engaged.
• In case the engine goes out i t must b e restarted wi th the veh ic le
stationary and the selector lever in position ( Pl or (Nl.
• The 4 th gear remains engaged even whe n the veh icle comes to
a ha lt . T he transmission will respond with noticeable jolts as you
shi ft fr om "D" to "P" and back aga in. The ca r wil l acce lerate s lug­
gishly as you take off again. •
Controls and equip­
ment
multitronic ™
App lies to veh icles: with mu lt itron ic'" Cont inuous ly Va riab le Transm ission (CVTl
General information
Your vehicle is equipped with a electronically controlled continu ­
ously variable transmission
(multitronic,..l. Inside the multitronic™
system, the gear ratios are not shifted in finite steps as in a conven­
t ional automatic transmiss ion, but rat her
continuously . As a result,
engine power is applied smoothly and comfortably, and better fuel
econo my is ac hieved.
The transmission se lects the appropriate gear rat io (upshifts and
downshif tsl a utomat ical ly based on set dr iv ing progra ms
=> page 153, "Dynamic shift program (DSP)" .
You can a lso ma nua lly select a shift p rogram (tiptronic®)
=> page 154.
You shou ld note, that the multitronic transmission differs from a
conventiona l Aut omatic Transmiss io n . In the mu lt it ronic transm is ­
sion the engine power is transferred via a link -p late chain, rather
than by a conventi onal torque c onver ter . The multitronic transm is ­
s ion greatly reduces vehic le "creep"" when at a standst ill and the
transmission is in D Sor R.
•

___ T_ r
_ a_ n_s _m_ i_s _s _i_o _n ___________________________________________________ _
Applies to vehi cles: with mu ltit ron ic '" C ont in uo usly Va riab le Tr ansmiss ion {CVT I
Driving the multitronic ™
The gear ratio is continuously adapted to vehicle speed
and load.
Starting the engine
-The selector lever must be in N or P.
Starting off
Press and hold the brake pedal.
Fig. 153 Section of the
center console:
selector lever with lock
button
-Press and hold the release button in the selector lever
handle and move the selector lever from
P (alternatively
N) to D (alternatively S) and release the button.
-Wait briefly until the transmission has shifted (you will
feel a slight movement).
-Remove your foot from the brake pedal and accelerate
=>& .
Rocking back and forth to become unstuck
-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 complete stop.
-Keep the brake pedal depressed so that the vehicle
cannot roll forward or backward while it is
idling=>& .
-Once stopped, do not depress the accelerator pedal to
rev up the
engine =>& .
Parking
-Press and hold the brake pedal until the vehicle has come
to a complete stop.
-Set the parking brake firmly=> page 138, "Parking".
-Press and hold the release button in the selector lever
handle, move the selector lever into
P and then let go of
the release button.
Your vehicle is equipped with a starting assist that allows for easier
starting on inclines. The system is activated when the brake pedal is
depressed for a
few seconds. After releasing the brake pedal, the
brake power is held for a moment to prevent the vehicle from rolling
back when starting.
The selector lever must be in
Nor P. If one of the driving position s
is engaged a safety switch wi ll prev ent the engine from being
started. See
also ~ page 136.
Before you move the selec tor lever from the P position, you must
always apply the brake pedal before and while depressing the
button in the handle of the se lector lever.
~

Transmission -
-----------------'
& WARNING
• Unintended veh icle mo vement can cause serious injury .
-When the selector lever is in a driving position, the vehicle
m ay creep , even at idle speed . Therefore do not relea se the
parking brake o r foot brake until you are read y to move ,
becau se power is transmitted to the wheel s as soon a s a
dri ving position is eng aged .
-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 clutche s in the transmission.
-Remember: - even when stopped briefly with the automatic
tr ansmission in
" D" , "S " or "R ", engine power i s being t rans­
mitted to the wheels. Your vehicle could
" creep " forward or
b ackward . When stopped , keep the brake pedal fully depressed
and use the p ark ing brake if necessary to keep the veh icle from
rolling .
-If the selector lever is un intentionally moved into N wh ile you
are driving , take your foot off the accelerator pedal and wait for
the eng ine to return to idle speed before selecting a driving
position.
-Never shift into " R " or "P " when the vehicle is in mot ion .
-Never get out of the dr iver 's seat when the engine is running.
-If you must get out of the vehicle , move the selector lever
se curely into the P position and apply the park ing bra ke firmly .
-If the engine must remain running, never have any driving
position engaged when che cking under the hood . Make sure
the selector lever has se curely engaged and is lo cked in
"P "
with the parking brake firmly set :::::, page 265 , "Eng ine
compartment ". Otherwise , any increase in engine speed may
set the vehicle in motion , even with the park ing brake
applied. •
Controls and equip ­
ment
Ap plies to ve hicles : wi th m ultit r on ic ™ Co ntin uo usly V ariab le Tr ansmissio n ICVT I
Selector lever positions
Th is sec tio n describes the selector le ver posi tions and
driving ranges.
Fig . 154 Display in the
in strument clu ste r:
s elec tor lever in p osi­
tion P
T he selector lever posit ion engaged appears next to the selector
lever as well as in the inst rumen t cluster dis play .
P - Park
In this selector lever posit ion the transmission is mechanica lly
locked .
E ngage P only w hen the vehicle is completely
stopped:::::, & in
"Driving the multi tronic™" on page 150.
T o shift into or out of posit ion P, you must first press and hold the
brake pedal and then press the release button in the selector lever
handle whi le moving the selec tor lever to P.
R -Rever se
The transmission wil l automatically select the lowest gear ratio
when you sh if t in to reverse .
irechnical data

-
Transmission
----------------
Select R only when the vehicle is at a full stop and the engine is
running at idle
speed~ & in "Driving the multitronic™" on
page 750.
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 -Neutral
Shift to this position for standing with brakes applied ~ page 152.
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 driving position for forward
Depending on the load on the engine, vehicle speed and the
dynamic control program, the transmission will select the
optimal
gear ratio.
In certain circumstances it may be advantageous to temporarily
switch to the manual shift program to manually select gear ratios to
match specific driving
conditions ~ page 154.
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 to
D out of N.
S -Sport position
Select this position for sportier performance. In this position, the
transmission will not upshift as soon, allowing the vehicle to use
the increased power available at higher engine speeds to achieve livelier acceleration.
Before you move the selector lever from
D to S, press the button in
the handle of the selector lever. When the vehicle is stationary or at speeds below 3 mph (5 km/h),
you must always apply the foot brake before and while moving the
lever to
S out of N.
& WARNING
Read and follow all WARNINGS ~ & in "Driving the multitronic™"
on
page 150.
0 Note
Coasting downhill with the transmission in N and the engine not
operating will result in damage to the automatic transmission and
possibly the catalytic converter. •
Applies to vehi cles : wi th mu ltitroni c'" Continuous ly Variable Transm ission (CVT )
Automatic Shift Lock (ASL )
The Automatic Shift Lock safeguards you against acciden ­
tally shifting into a forward or the reverse gear and
causing the vehicle to move unintentionally.
~ M -w a, .,
Fig. 155 Shift gate:
selector lever lock
positions and interlock
button highlighted
..

Transmis sio n -
----------------
The selector lever lock is released as fo llows:
- Turn t he ignition on.
- Step on the brake pedal.
At the some time press and hold
the inter lock button on the side of the gear selector knob
=> page 145, f ig. 149 with your thumb until you have
moved the selector lever to the desi red position.
A uto mat ic se lec to r l eve r lock C\S)
The se lector lever is locked in the P and N posi tions when the igni ­
tion is turned on.
When the selector lever is in the
P or N pos itions , th e m essage
When statio nary appl y footbrak e while sel ecting gear
appears on the instrument c luster disp lay on vehicles equipped
with the Driver Informatio n System as a reminder to the driver . The
symbo l
Cs» will a lso light up on the shi ft gate at the base of the
selector lever.
In additio n, the symbo l for the automatic selector level lock with
light up in th e shift ga te .
A time delay e lement prevents the selecto r lever from loc king 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 approx imately one second , without the brake peda l
being pressed.
At speeds above abou t 3 mph (5 km/h) the Automatic Shift Lock is
automatically deactivated in the
N position.
The button needs to be pressed to sh ift from
D to S to avoid unnec ­
essari ly high fuel consumption in the
S po rt mode .
Interlock but ton
The lock button on the selec tor lever prevents the lever from be ing
accidentally shifted into certain pos it ions . Pressing this button
deactivates the selector lever
lock=> page 152 , fig. 155.
Controls and equip ­
ment
Igniti on key sa fe ty int erlo ck
The key cannot be removed from the ignition un less the se lector
lever is in the
P park posi tion . When the ignition key is removed , the
selector lever wil l be locked in the
P posit ion. •
Applies t o ve hic les: w it h m ultitron ic™ C ontin uo usly Var iab le Tra nsmiss ion (CVTl
Kick-down
The kick -d own feature allows the veh icle to generate
maximum acceler ati on.
When you press the accelerator peda l beyond the resistance point
that is reached at ful l throttle, the trans mission wi ll select a lower
gea r ratio based on vehicle speed and engine RPM . The engine RPM
wil l be control led to produce max imum veh ic le acceleration as long
as you continue to press the acce lerator pedal beyond this resis ­
tance point .
& WARNING
Be careful when u sing the kic k-down f eature on slipp ery ro ad s.
R apid acceler ation m ay cause the vehicle to skid . •
A pplies to v ehicles: w ith mult it ro nic™ Con tinuo usly Var iab le Tra nsmiss ion (CV Tl
Dynamic shift program (DSP)
The multitronic™ transmission is electronically
controlled.
The transmiss ion se lec ts the appropr ia te gear rat io (upshifts and
downshifts) automatically based on preset driving programs .
However, you can also manua lly select a s hift program (tiptronic ®
f eature)
=> page 154 .
The transmission will select on e of th e econom y programs when
you drive at a s teady speed or a gradually changing speeds without
~