ignition AUDI A4 AVANT 2008 Workshop Manual

On the road -
-----------------'
Power steering
Power steering makes it easier to steer the vehicle when
the engine is running.
If the engine is not running the power steering does not work and
you will find it more difficult to turn the steering wheel.
Whenever the steering wheel is turned all the way to the left or right
a lo t of stress is placed on the power steering pu mp. When this
happens you will hear a noise coming from the power steering
pump .
0 Note
Never hold the steering wheel turned all the way to the left or right
longer than 15 seconds when the en gine is running -damage to
the power steering system is likely! •
Controls and equip­
ment
Ignition lock and ignition switch
Ignition lock
T he ignition key starts or stops the engine .
0
Ignition off G)
Fig . 14 3 Ignition lock
pos it io ns
In position => fig. 143 G) both the ignition and engine are off, and
the steering is locked.
To
lo ck the stee ring after you have removed the ignition key, turn
the steering wheel in either direction un til you hear it lock in to
place. You shou ld always lock the steering whenever you leave your
vehicle. This makes a vehicle theft even more
difficult =>& .
Ign iti on on @
If it is d iff icult to turn the key after you have inserte d it into the igni ­
tion lock, turn the steering whee l back and forth . This will take the
load off the s teering lock mechanism and you will be able to turn the
key free ly and start the engine.
Starting the engine ©
In this position the engine starts. While the engine is starting, the
power supply to the headlights and other e lectrical consumers is
.,
Technical data

___ o_ n_ t_h _e _ r_o _a_ d __________________________________________________ _
temporarily interrupted to conserve battery power. After the engine
has started, release the key and it will return to position
0-
Before the starter can be operated again the key must be turned
back to position
G) . The non-repeat lock prevents you from
damaging the starter when the engine is running.
_& WARNING
• Never remove the key from the ignition lock while the vehicle is
moving. The steering wheel will lock causing loss of control.
• If you have to leave your vehicle-even for just a minute- always
remove the ignition key and take it with you. This is especially
important if you are going to leave children behind in the vehicle.
The children could start the engine or use other vehicle controls.
Unsupervised use of vehicle controls (for example, power
windows) can cause serious personal injuries.
[ i] Tips
If the vehicle battery has been disconnected and then reconnected,
then you must leave the key in position
0 for about 5 seconds
before you can start the engine. •
Ignition key safety lock
The ignition key can only be removed when the selector
lever is in the
"P" (Park) position.
After switching off the ignition, the ignition key can only be
removed from the ignition lock when the selector lever is in the
"P"
(Park) position. After you have removed the key, the selector lever is
locked and cannot be moved. •
Starting and stopping the engine
Starting the engine
The engine can only be started with your original Audi
key.
-Set the parking brake.
-Move the selector lever to the neutral position (automatic
transmission: selector lever in P or N)
=> & .
-On vehicles with manual transmission, fully depress the
clutch pedal.
-Turn the ignition key to position 0 => page 135, fig. 143
- do not depress the gas pedal when starting the engine!
-Let go of the key as soon as the engine starts.
A cold engine may at first be loud after it has been started. This is
due to the hydraulic valves building up the oil pressure . This is
normal and no need for concern.
If the engine does not start immediately, stop trying after 10
seconds and then try to restart the engine about 30 seconds later.
What to do if the engine does not start
• ~ page 330
• ~ page 332, "Emergency towing with commercial tow truck"
_& WARNING
Never start or let the engine run in a confined or enclosed area.
Exhaust fumes from the engine contain carbon monoxide, a color­
less and odorless gas. Carbon monoxide can be fatal if inhaled.
• Never leave the engine idling unattended. An unattended
vehicle with a running engine poses a danger of personal injury or
theft.
~

_________________________________________________ O_ n_ t_h _e _ ro_ a_d _ __._
0 Note
• Avo id high eng ine speeds, fast acceleration or heavy e ngine
loads while the engine is still cold . This could damage the engine!
• The engine cannot be started by pushing or towing the vehic le.
ffi For the sake of the environment
To avoid unnecessary e ngine wear and to reduce exhaust emis ­
sions, do not let your vehic le stand and warm up. Be ready to drive
o ff immediate ly aft er starting your vehicle. Mai ntain mode rate
speed until the engine is completely warm. R emember, the engine
per forms bes t at opera ting temperature .•
Stopping the engine
- Tur n t he ignitio n ke y t o posit io n G) => page 135 , fig. 14 3.
& WARNING
• Nev er turn off the engine until the vehicle has come to a
complete stop.
• The brake boo ster and servotronic only work when the engine
is running . With the ignition turned off , you have to app ly more
force when steering or braking . Since you cannot steer and stop
normally, th is can lead to accidents and seriou s injurie s.
• The radiator fan can continue to run for up to 10 minutes even
afte r you have turned off the engine and removed the ignition key .
The radiator fan can also turn on again if the engine coolant heats
up because of intense sunlight or heat build-up in the engine
c ompartment.
Controls and equip ­
ment
0 Note
Do not stop the e ng ine immed iately after hard or extended drivin g.
Keep the engine running for appro ximate ly two minutes to prevent
e xcessive heat build -up. •
Parking brake
Parking brake
When the parkin g brake is set , it prevents the vehicle from
rolling aw ay unin tentionally.
Setting the parking brake
Fig . 144 Cent er
co nso le : P ark ing bra ke
set
- Pull the p arking brak e lever all the way up.
Releasing the parking brake
Pull t he pa rkin g brake lever up sligh tly and press the
release butto n at th e s ame tim e::::> fig . 144 -ar row- .
irechnical data

___ o_ n_ t_h _e _ r_o _a_ d __________________________________________________ _
-Keep the release button pressed and lower the parking
brake~ &.
If you should drive off with the parking brake still set, a warning tone
will sound and the following will appear in the instrument cluster to
remind you to release the parking brake:
Parking brake set
The parking brake warning comes on only after you have driven for
longer than 3 seconds and faster than 5 mph (5 km/h).
The parking brake warning light Brake (USA)/
«Dl (CDN) illuminates
when the parking brake is set and you switch on the ignition.
& WARNING
Always release the parking brake completely. A partially engaged
brake will overheat the rear brakes, reduce their effectiveness and
cause excessive wear. This could lead to brake failure and an acci­
dent.
0 Note
Only after the vehicle has come to complete stop, should you firmly
set the parking brake and either move the gearshift lever into 1st.
gear (manual transmission) or move the selector lever into
"P"
(Automatic transmission).•
Parking
To prevent a parked vehicle from rolling away, there are a
few things you should do.
When you park your vehicle, do the following:
-Stop the vehicle using the brake pedal.
-Set the parking brake firmly.
-Move the selector lever into the P position ~ &.
-Switch off the engine and remove the ignition key from
the ignition lock.
What else you should do when parking your vehicle on
an incline or decline
Turn the steering wheel so that if the vehicle should start to roll, it
will roll into the curb.
If you are parking on a
decline (the front of your vehicle facing
downhill), turn the front wheels to the right so that they point
toward the curb.
If you are parking on an incline (the front of your vehicle facing
uphill), turn the front wheels to the left so that they point
away from
the curb.
Move the selector lever into the P position.
& WARNING
This is how you can reduce the risk of injury when leaving your
vehicle.
• Never park the vehicle where it can come in contact with dry
grass, spilled fuel or any other flammable materials.
• Never allow anyone -especially small children -to remain in the
vehicle when it is locked. Locked doors make it more difficult for
rescuers to access the passenger compartment in the event of an
emergency. Danger to life!
• Never leave children unsupervised in the vehicle. Children
could release the parking brake or move the gearshift lever out of
gear. The vehicle could start to roll away and cause an accident.
• No matter what the season is, the temperature in a parked
vehicle can reach dangerous levels. •

On the ro ad 11111 ---------------------------------------------------------------~
acoustic park assist
A pplies to vehicles : with 4 -c h an nel a cou sti c par k ass is t
Rear acoustic park assist
The rear acoustic park assist warns you of obstacles or
objects behind your car.
How it wor ks
The acoustic park assist warning system (4 -channel acoustic park
assist) uses ultrasonic sensors to warn you when you are
backing
your vehicle close to an obstac le . The system 's 4 sensors are located
inside the rear bumper.
A cti va ting
The rea r acoustic park ass ist is activa ted whenever you shift into
Re verse . You will hear a warn ing tone when the system is on.
Reverse
With the car backing up in reverse gear, the collision warning sound
se ts in at the fo llowing
approximate d istances to obstacles:
st raight a ft 5ft(
1.5ml
a ngl ing aft of f ve hicle corners 2 ft (0.6 ml
As the distance shr inks, the time interval between the audible tones
grows shorter.
The sound changes to a continuous tone as soon as the remaining
d istance to an obstacle c loses to less than about 1 ft. (0.3 ml. The
steady tone cautions you that you have backed up hazardously
close and you risk co llis ion by back ing up any furt her .
Malfunction s in the system
If a warning tone is audible for about five seconds when you turn on
the ignition, there is a ma lfunction in the system . Have the prob lem
corrected by your authorized Aud i dealer.
Controls and equip ­
ment
Keep the sensors in the rear bumper clean and free from ic e so t hat
the acoustic park assist system can funct ion proper ly .
& WARNING
• Sensors have dead spaces in which object s cannot be
detected . Be especiall y alert for small ch ildren and animals , since
they are not always dete cted by the sensor s.
• The acousti c pa rk assist system is not a substitute for the
driver's own caution and alertne ss . Ultimate re sponsibility alway s
remains w ith the driver dur ing parking and s imilar maneuvers .
Alway s watch where you are driving _
0 Note
• Remem ber t hat low obstac les for wh ich a warning has already
been issued may "dive" below the system's sensing zone if the
veh ic le is be ing bac ked up cl oser. In this case, the warning sound
shutting off does
not indica te that you have cleared the obstacle .
Instead , impact is imminent.
• Objects such as trai ler hitches, barrier chains, narrow posts or
f ences covered by a th in laye r of pa int may not always be detected
by the system . T hey can sti ll damage your vehic le without a
warning.
[ i ] Tips
Keep the sensors in the rear bumper clean and free of snow and ice
so that the acoust ic park ing ass ist system can function properly .•

___ T_ r
_ a_ n_s _m_ i_s _s _i_o _n ___________________________________________________ _
Transmission
Manual transmission
Applies to vehicles: w ith 6 -speed manua l transmission
Gearshift lever
The clutch pedal must be depressed all the way before
you can start the engine .
Your Audi with manual transmission is equipped with an
interlock-feature .
-Depress the clutch pedal all the way.
- Start the engine with the gearshift lever in Neutral and
clutch pedal depressed.
0 Note
Always depress the clutch pedal fully when changing gears. Do not
hold the vehicle on a hi ll with the c lutch pedal partially depressed.
This may cause premature clutch wear or damage .
[ i ] Ti ps
• Resting your hand on the gearshift lever knob while driving will
cause premature wear in the transmission.
• The back -up lights go on when you shift into Reverse with the
ignition on .•
Applies to vehicles: with 6-speed manual transmission
Gearshift pattern (6-speed manual
transmission)
Fi g. 14 6 Gearshi ft
pa ttern: 6-speed
Drive in 6th gear for optimum fuel economy when cruising .
However, if more acceleration is required (when passing, for
example), shift down.
E n gag ing r everse gear (R )
- Move the shift lever all the way to the left past the spring
pressure point, press down, then push forward .
Especially after driving forward, stop the vehicle completely, shift
into
Neutral and rest the shift lever briefly in Neutral before shifting
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.
~

-
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
~