2008 AUDI A4 AVANT warning light

Cruise control
CRUISE (USA models)/ ·~ (Canada models)
The CRU ISE wa rn in g/ ind icato r light illuminates whe n the cruise
control is act ivated. •
Anti-lock brake system
ABS (USA models)/
<0 (Canada models)
This warning /indicator light mon itor s the ABS and the
e lec tr oni c di fferent ial loc k (EDL ).
The ABS warning light will come on for a few seconds when the igni ­
t ion is sw itched on. T he lig ht wi ll go out a fter an autom ati c ch eck
sequenc e is complet ed .
There is a malfunction in the ABS when :
• the warning/indicator light does not ill uminate when you switch
o n t he ign ition .
• the warning/indicator light does not go out after a few seconds .
• the warning/i ndicator light illu minates while driving .
Without the electronic assistance of the ABS , the brake system will
still respond and brake the car . Have the brake system checked and
restored to its full performance by an authorized Audi dealer as
soon as possible.
Fo r m ore info rm ation re gar din g th e ABS s ee
=> pa ge 24 0.
Since any malfunction of the AB S also affects the
ESP, that s ystem's
warning symbol !;.
=> page 22 will light up along with the ABS/
0 (Canada mode ls) warning light.
Unspecific malfun ction in the brake system
If both th e bra ke warn ing lig ht => page 23 and the ABS w arn ing l ig ht
illum inate when t he park in g brake is released, t he likely cause is a
serious malfunction in the brake system beyond an inoperative AB S
=>& .
Controls and equip ­
ment
Instruments and warning /indicator lights
If an unsp ecific defect in the brake system is indicated, the entire
br ak e syste m is lik ely to be a ffec ted a nd you
mus t exp ect deg ra d ed
b rake r espons e and performance .
Since any malfunction of the ABS also effects the ESP , that system 's
w ar ning symbol
f;.. => page 2 2 will l ight up alo ng with th e ABS/ 0
(Canada models) warning light.
Malfunction in the electroni c differential lock
(EDL )
The two systems ED L and ABS interact . For th is reason the ABS
warning light/ 8 (Canada mode ls) wi ll come on to ind icate a
ma lfunction in the EDL syste m
=> page 237. See your authorized
Aud i deale r as s oon as poss ible.
& WARNING
• If the ABS/ 8 (Canada models) warning light does not go out ,
or if it comes on while driving, the ABS system is not working
properly . The vehicle can then be stopped only with the brakes
operating without ABS support . You will not have the protection
ABS provides. Contact your Audi dealer as soon as possible.
• USA models : If both the BRAKE warning light and the ABS
warning light come on at the same time, the rear wheels could lock up first under hard braking. Rear wheel brake lock-up can
cause loss of vehicle control and an accident . Have your vehicle
repaired immediately by your authorized Audi dealer or a qualified
workshop. Drive slowly and avoid sudden , hard brake application .
• Canada models : If both the brake warning light ((DJ and the ABS
warning light
0 come on at the same time , the rear wheels could
lock up first under hard braking. Rear wheel brake lock-up can
cause loss of vehicle control and an accident . Have your vehicle
repaired immediately by your authorized Audi dealer or a qualified
workshop. Drive slowly and avoid sudden, hard brake
application. •

Instruments and warnin g/indi cat or li ghts
Safety belts i
This warning/indicator light reminds y ou to put on your
safety belt.
The .ft warning/indicator light i lluminates when the ignition is
switched on to remind the driver and (on USA mode ls only) any front
passenger to put on the safety belt. Additiona lly, an acoustic
warn ing (gong) w ill also sound.
For more
information~ page 176 , "Safety belt warning light 4". •
Turn signals ¢ ¢
The in dicator light flashes when you use either turn
signal.
Whenever you use the left ¢ or the right ¢ turn signal, the indicator
l ight flashes. W hen you use the emerge ncy flasher, both indicator
lights f lash .
I f one of the turn signal light bulbs burn out, the turn signal will
flash twice as fast as normal. •
Electronic Stabilization Program (ESP) fJ
The warning/indicator ligh t monit ors the electr onic s tabi ­
lization program.
The ~ warning/indicator light has the fol lowing functions:
• it flashes while you are driving, when the ESP is working .
• it illuminates when you switch on the ignition for approximately
2 seconds as a funct ion check.
• it illuminates when there is a ma lfunction in the ESP.
• it illuminates after the battery has been disconnected .
• it illuminates continuous ly when the ESP is switched off . •
it illuminates if there is a malfunction in the ABS, since the ESP
is part o f the ABS system.
If the ESP warning/indicator light illuminates and stays on after you
have started the engine, this may mean that the control system has
temporar ily switched o ff the ESP . If this is case, you can reactivate
the ESP by switching the ignition off and then on again . The
warning/indicator light should go out to show that the system is
ful ly functional again .
I f the battery terminals were disconnected and re -connected, the
vehic le was jump started or the battery is very weak, the ESP sensor
system goes through a learning p rocess for the firs t few yards.
D uring th is time, t he ind icator l ight i llu minates. It goes out as soo n
as the learning process is comp lete.
For more information about the
ESP ~ page 236. •
Generator 0
T his warning/indicator light detects a malfunction in the
generator or i n t he vehicle's elec trical system.
T he O warning/indicator light i lluminates w hen you switch on the
ignition and must go out after the engine has started .
I f the
O warni ng/ind icator light illum inates while you a re driv ing,
you shou ld contact your authorized Audi dealer . Since the vehicle
battery is dischargi ng, you should sw itch off any unnecessary elec ­
trical consumers (for example, the air conditioner) .
0 Note
If the _JL warning/indicator light (ma lfunction in the engine coo ling
system) i n the instrument cluster shou ld
i llumi nate ~ page 31, stop
the ve hicle and turn o ff the engine . The coo lant pump is not work ing
-this can cause engine damage! •

High beam [D
The ~D warning/indicator light il lu m inates when the high beams are
on or w hen you use the head lig ht flash er. For mo re inf ormation
about using the h igh beams,
see=> page 80 . •
Electronic power control EPC
Th is warn ing /indicator l ig ht m on ito rs the ele ctr onic
po wer co nt rol.
The EPC warning/indicator light (E lectronic Power Control) illumi ­
n at es w he n yo u switch o n the ignitio n as a functi on ch ec k.
[ i] Tips
If thi s wa rning/indi cator light i llum ina tes w hile you a re driving , then
there is a ma lfunction in the engine electronics . Have the malfunc ­
t io n co rre cte d as so on as p oss ible by your auth orized Audi de aler or
qualified wor kshop .•
Brake system BRAKE (USA models)/ (CD)
(Canada models)
Th is warn ing /indicator l ight i llu minates when the brake
fl uid leve l is t oo low or wh en ther e is a ma lf u nct io n in t he
ABS , or when the pa rkin g brake i s se t.
T he lig ht illu min ate s w hen the igni tio n is turn ed on. It goes out aft er
the engine has be en started and the parking bra ke is fu lly released .
T his i ndicate s th at th e br ake w arni ng lig ht is fun cti onin g prop erl y.
If the brake warning light does not light up when the engine is
cranking or the parking brake is applied , there may be a malfunction
in the electrical system. In this case, contact your Audi dealer.
When the l ig ht comes on, an audible warning si gnal is also given.
Controls and equip ­
ment
Instruments and warning /indicator lights
Parking brake set
T he BRAKE or CCD) (Canada) wa rning/indicat or l igh t illum in ate s wh en
t h e pa rkin g b rake is
se t=> ,&.
& WARNING
• USA models : If the BRAKE warning light and the ABS warning
light come on together , the rear wheels could lock up first under
hard braking . Rear wheel lock-up can cause loss of vehicle control
and an accident . Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models : If the brake warning light
{(j)) and the ABS
warning light
0 come on together , the rear wheels could lock up
first under hard braking . Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme­
diately by your authorized Audi dealer or a qualified workshop .
Drive slowly and avoid sudden , hard brake applications.
• If the brake warning/indicator light does not go out after a few
seconds and the parking brake released, or lights up while you are
driving, the fluid level in the brake fluid reservoir is too low. If you
believe that it is safe to do so , proceed immediately at low speed
to the nearest authorized Audi dealer or qualified repair facility and have the brake system inspected .
• Always keep in mind that after several brake applications , you
will need greater pressure on the brake pedal to stop your vehicle .
Do not rely on strained brakes to respond with maximum stopping
power in critical situations . You must allow for increased braking
distances . The extra distance u sed up by fading brakes could lead
to an accident . •

Driver inf orma tion di spl ay
Driver information display
Introduction
Applies to vehicles: w ith Driver information display
General notes
The driver information display inside the instrument
cluster provides you, the driver, with important informa­ tion.
Fig. 1 O Ins tru ment
c lu st er: ce nte r dis play
The driver information display is located in the center of the instru­
ment
cluster:::> fig. 10.
The driver information system updates important information in the center display in clear view of the driver . In an easy to understand
format, the display tel ls you how your vehicle is functioning
at th e
c urr ent m om ent .
For example, the display can te ll you how many
miles (ki lometers) you can still drive until it is time to bring your
vehic le to your authorized Audi dealer for a scheduled Maintenance
Service. This feature helps preventing costly repairs. It is just one of
many different items o f information available for recall. The display also gives you a "status report" whenever the
sou
nd sys te m and
n av igatio n
systems are being used.
Detailed instructions for operating the Aud i Naviga tion System* are
provided in separate manuals.
[ i] Tips
If your vehic le has an automatic transmission, the various display
contents will appear only after you have moved the selector lever
into
R , D or S. •
Driver information display with on -board
computer
Radio display
Outside air temperature
Door open indicator
Selector lever position tiptronic®
Speed limiter
Auto Check system Driver information
Parking brake warning
Service interval disp lay
Headlight/taillight malfunction ::::> page25
=:> page25
=:> page26
=:> page 144
=:> page34
::::> page 28
::::> page 29
=:> page29
=:> page 17
=:> page 35

You can switch off the open-door-or-lid warning display by briefly pressing the On Board computer control
but tons => page 39. The
open door or trunk warn ing will, however, illuminate again as soon
as there is a change in the position of the doors, engine hood or
trunk lid. •
On-Board Diagnostic system (OBD)
Malfunction Indicator Lamp (MIL) (USA
models) / (Canada models)
The Malfunction Indicator Lamp (MIU in the instrument cluster
=> page 19, fig. 9 is part of the On -Board Diagnostic (OBD II) system.
The warning/indicator light il luminates when the ignition is
switched on and goes out after the engine starts and the idle has
stabi lized . This indicates that the MIL is working prope rly.
If the light do es not go out after the engine is started, or illuminates
while you are driving, a malfunction may exist in the engine system.
If the light starts flashing, the catalytic converter could be damaged .
Continue driving
w ith redu ced pow er (avoiding sustained high
speeds and/or rapid accelerations) and have the condition
corrected. Contact your authorized Audi dealer.
If the light illuminates, the e lectronic speed limiter may also be
malfunctioning . For more
information=> page 28, "Electronic speed
limiter".
An impr operly c lo se d fuel filler cap may al so cau se th e MIL l amp to
illumi nate
=> page 269. •
Controls and equip ­
ment
Dri ver inf orma tio n di spl ay
On -Board Diagnostics
F ig. 15 Locatio n of
Da ta Li nk Co nnecto r
( DL Cl
On-Board Diagnostics monitors the components of your emission
control system . Each control led component in your engine system
has been assigned a code. In case of a malfunction, the component
wil l be identified and the fault stored as a code in the control
modu le memory.
The M IL lamp may a lso illuminate if there is a leak in the on-board
fuel vapor recovery system. If the light illuminates after a refuelling,
pull off the road and stop the vehicle, then check that the fuel fi ller
cap is proper ly closed
=> page 269.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnos tic equipment (generic scan tool for
OBD).
In order to connect the special diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is located to the right of
the engine hood release
lever => fig. 15 .
Your author ized Audi dealer or a qua lified service station can inter­
pre t the code and perform the necessary repair. •
irechnical data

Driver inf orma tion di spl ay
Electronic speed limiter
Your vehicle may be factory equipped with tires that are rated for a
maximum speed of 130 mph (210 km/h}. This is less than the
maximum speed of your vehicle. To reduce the risk of sudden tire
failure and loss of control if the vehicle is operated at excessive speeds, your vehicle also has an electronic speed limiter . The elec ­
tronic speed limiter prevents your vehic le from going faster than the
tire speed rating. For more
information~ page 305, "New tires and
r eplacing tires and wheels" .
If the vehicle approaches the tire speed rating, the engine control
unit wi ll turn off the fuel injectors. You will notice an immediate loss
of engine power and a drop in road speed.
If the engine control unit receives faulty vehicle road speed signals,
t he Malfunc tion Indicator Light (MIU will illuminate. If this occurs,
contact the nearest authorized Audi dea ler for ass istance.
&_ WARNING
Al wa ys o bserve th e pos te d speed l imit s and adjust your sp eed t o
s uit preva ilin g road, traffic and weath er cond ition s. Ne ver drive
yo ur vehicle f aster than the ma xim um spe ed rating of the ti re s
install ed .•
Auto-Check Control
Introduction
Fi g. 16 Au to-Check
C o nt rol: a ll syste ms
c h eck ed OK
Whenever the ignition is turned on, Auto -Check Control checks the
proper functioning of important vehicle components and systems.
Auto -Check Contro l keeps up its continuous monitoring of vehic le
systems even as you are driving.
If Auto Check senses an irregular condition or a malfunction
requiring urgent repair, it generates a specific symbol or short
message in the instrument cluster center display . You will also hear
an audible warning tone . The disp lays a re color coded in either red
or yellow depending on their level of priority.
A red symbol means
D anger , a yellow symbol indicates Warning .
Along with some particular red symbols, a message will appear in
the display to alert the driver to certain conditions. •

Driver information messages
Along with some particular warning/indicator lights and instrument cluster symbols, additional messages will
appear in the display .
A driver information message will appear in the display when, for
example :
a light bulb has burnt
out => page 35,
or if you drive off with the parking brake s till engaged (pulled up).
or before you move the selector lever in gear (automatic transmis­
sion).
Driver information messages can be switched o n by the driver when
a priority 1 symbol appears and flashes =>
page 28.
Sw it c hing on th e dri ver inf orm ati on me ssage
For example, if there is a malfunction in the engine oil pressure, the
~ symbo l will appear in the display . If you press the CHECK button ,
the following message will appear:
Sw itch off en gin e, check oil l evel
The message goes out after approximately 5 seconds. Press the
CHECK button to display the message again.
[ i ] Tip s
The following two messages, Handb ra ke i s a pplie d and Wh en
s tati onary ap ply foot br ake while selecting g ear ,
cannot be
switched on again . T hese messages will remain in the display until
you release the parking brake or unti l you move the selector lever
into a gear .•
Controls and equip ­
ment
Dri ver inf orma tio n di spl ay
Parking brake warning
To release the parking brake, first press the release button in the
lever and lift the lever s lightly. Then lower it all the way down.
If you should drive off with the parking brake still engaged, a
warning tone will sound to remind you to release the pa rking brake.
Also, the following message will appear in the display :
Handbrake is a pplied
The parking brake warning is activated when you drive longer than
3 seconds and faster than 3 mph (5 km/h) .•
Ap plies to vehi cles: w it h ma nua l trans mission
Function test : manual transmission
Fig. 17 Dis pl ay:
man ual trans missio n
fu ncti on test
perfo rmed
The Auto -Check Control will automatically perform a test each time
you switch on the ignition.
If the functions monitored by the Auto-Check Control are working
properly, the
O K => fig. 17 will light up for a few seconds. .,_
irechnical data

BRAKE
(Ci))
BRAKE
_j_
COOLANT
~
OIL
PRESSURE USA
models:
Malfunction in the brake system
Canada models:
Malfunction in the brake system
Engine coolant level too low/
engine coolant temperature too
high
-
Engine oil pressure
too low =>
page 31
=> page 31
=> page 31
=> page 32
Red symbols indicate a priority 1 malfunction -Danger!
When a red symbol appears , a warning tone will sound consecu­
tively three times. The symbol continues to flash until the malfunc ­
tion has been repaired. If there are more than one priority 1 malfunc­
tions, the symbols appear one after the other for about two
seconds .a
Brake system malfunction BRAKE (USA models)/
(CD) (Canada models)
A malfunction in the brake system must be repaired as soon as possible.
When BRAKE/ (CD) (Canada models) appears in the display
and flashes, this means there is a malfunction in the brake
system. In addition to the symbol, one of the following two
messages also appears in the display:
Stop vehicle, check brake fluid and hydraulic fluid levels
Warning! Fault in ABS brake system. Contact workshop!
- Pull of the road and stop the vehicle.
- Check the brake fluid
level :::;, page 284.
Controls and equip ­
ment
Driver information display
USA models : if there is a malfunction in the ABS system, the ABS
warning/indicator light illuminates along with the BRAKE system
malfunction warning/indicator
light=> ,&..
Canada models: if there is a malfunction in the ABS system, the 0
warning/indicator light illuminates together with the ((l)) brake
system malfunction warning/indicator
light =>,&. .
& WARNING
• Always observe the warnings in => page 265, "Engine compart­
ment", before opening the engine hood and checking the brake
fluid.
• Driving with low brake fluid is a safety hazard! Stop the car and
get professional assistance.
• If the brake system warning/indicator light illuminates
together with the ABS warning/indicator light, then the ABS
system is malfunctioning. The rear wheels could quickly lock up
when you apply the brakes. This could lead to loss of control and
your vehicle could slide! Drive carefully to the nearest authorized
Audi dealer and have the malfunction corrected. •
Engine cooling system malfunction -L
A malfunction in the engine cooling system must be
repaired as soon as possible.
When the - L symbol in the display flashes, then either the
engine coolant
temperature is too high, or the coolant level
is too low. In addition to the symbol, the following message
also appears in the display:
Switch off engine, check coolant level
- Pull off the road and stop the vehicle.
- Turn off the engine.