check engine light AUDI S4 2014 Owners Manual

Safety belts . . . . . . . . . . . . . . . . . . . 13 8
General notes . . . . . . . . . . . . . . . . . . . . 138
Why safety be lts? . . . . . . . . . . . . . . . . 139
Safety belts . . . . . . . . . . . . . . . . . . . . . 141
Safety belt pretens ioners . . . . . . . . . . 144
Airbag system ................ .
Important things to know ......... .
Front airbags ................... .
Mon itor ing the Advanced Airbag
System ........................ .
Side airbags ............. .... .. . .
Side curta in a irbags .............. .
Child Safety ........ .... ... .. . .
Impor tant things to know ......... .
C hi ld safety sea ts ................ .
I nstall ing a chi ld safety seat . ... .. . .
L A T CH Lower anchorages and tether
for children ... .... .... ... .. .. .. . .
Addit ional Information
Vehi cle operat ion ..... .. .. .. . .
Intelligent technology .. .. .. . .
Not ice about data recorded by vehicle
control modules .......... .... .. . .
Electronic Stabilization Control (ESC) .
Braking .. ... ................ ... .
E lect ro-mechanical power assist ,
dynamic stee ring ................ .
Driving w ith your qu attro ......... .
E ne rgy management ... ... .. .. .. . .
Driving and environment ... ..
The first 1,000 miles (1,500 km) and
afterwards ... ... ..... ... .. .. .. . .
Avoid damaging the vehicle ... .. .. . .
Driving through water on roads ... . .
Catalytic converter .......... .. .. . .
Shutting down vehicle ............ .
Operate your vehicle econom ically and
minim ize pollution ............... .
a llroad: Driv ing offroad ........ ... .
Trailer towing ... ... ... .. .. .. . .
D riving w ith a t railer ............. .
Trailer towing tips ........ .... .. . . 146
146
150
156
16 1
164
167
167
173
17 7
18 1
185
186
186
186
186
189
19 1
19 2
193
195
195
195
195
196
197
197
199
20 1
20 1
203
Table of contents 3
Vehicle care . . . . . . . . . . . . . . . . . . .
204
Vehicle care and cleaning . . . . . 204
Genera l information . . . . . . . . . . . . . . 204
Car washes . . . . . . . . . . . . . . . . . . . . . . 204
Cleaning and care information . . . . . . 205
Fuel supply and filling your
fuel tank ..... .. .. . ............ .
Gasoline .. .. .. .... ..... ..... ... .
Fuel tank .. .. .. .. .. . .. .... ...... .
Checking and filling .......... .
Engine hood ... ... .............. .
Engine compartment ............. .
E ngine oil . .. .. .. ... .. .. ..... ... .
E ngine cooling system ............ .
B rake fluid .. .. .. .. . ............ .
Battery ... .. .... .. . .. .. ..... ... .
Windshie ld/headlight* washer
container ... .... ... .. .. ..... ... .
Tires and wheels ... ..... ... .. .
Tires ... .. .. .. .... . ... ...... ... .
Tire pressure monitoring system
Do-it-yourself service ...... .. .
What do I do now? ...... ... .. .
Vehicle tool kit . ...... ........... .
Space-saving spare tire (compact
spare tir e) .... ... .. ............. .
Inflatable spare tire .............. .
Inflat ing i nflatable spa re tire ...... .
Changi ng a wheel . .... ........... .
Fuses and bulbs ...... ........ .
Fuses ..... .... .. .. . ............ .
B ulbs ..... .. .. .. .. .. ........... .
Emergency situations ........ .
Genera l ... .. .. .. ............... .
St art ing by p ushing or towing ...... .
Star ting with jumpe r cables .. ... .. .
Use of jumper cables . .. ..... ... .. .
Emergency towing wit h commercia l
tow truck ... .. .. .. .. ........... .
Lifting vehicle .. .. ............... . 209
209
211
214
214
216
216
2
21
224
225
228
2 3 0
230
249
252
252
252
252
253
254
255
261
2 61
264
2 66
2 66
2 66
266
267
268
270
•
•

Instrument s and warning /indicator lights 11
A WARNING
- Always observe the warning in
c::> page 214 , before opening the hood
and checking the engine coolant level.
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment.
You could burn yourself. Let the engine
cool off first so that you cannot hear or
see any steam or engine coolant .
(D Note
-Mounting additional lights or accessories
in front of the air inlets reduces the cool­
ing effect of the rad iator. At high outside
temperatures or high eng ine load , the
engine could overheat.
- The front spoiler has been designed to
properly distribute the cooling air when
the veh icle is moving .
If the spoiler is
damaged , this cou ld reduce the cooling
effect and the engine co uld then over­
heat. Ask your authorized Aud i dealer for
assistance.
Tachometer (engine rev counter)
The tachometer indicates the engine RPM
(revolutions per minutes).
I f engine RPM drops below 1,500, you should
downshift to the next lower gear . T he red area
at the end of the scale indicates maximum
perm issible engine RPM after the break-in pe­
riod. Before reaching this area, move these­
lector lever to position 0/5 or ease your foot
off the accelerator pedal.
@) Note
The tachometer needle@c::> page 10 ,
fig. 3 shou ld only briefly be in the red
zone: you could damage your engine! The
beg inning of the red zone varies depend-
ing on the engine .
@) For the sake of the environment
Upshifting early saves fuel and reduces en­
gine noise.
~ button
Fig. 4 SET button in th e ins trume nt cluster
The !SET ! button performs the following func­
tions:
Switching on time, date, temperature
display and odometer
The display appears for approximate ly 30 sec­
onds when you press the
I S ET ! button c::> fig . 4
with the ignit ion off .
Starting the Auto-Check sequence
The Auto-Check system constantly monitors
certa in individual functions and components
of the vehicle when the ignition is turned on
and when the vehicle is moving .
With the ignition turned on, you can start the "Auto-Check sequence" by pressing the
! SE T!
button . You can perform an Auto-Check se­
quence when the vehicle is stationary and the
ignition is turned on or when the vehicle is
moving slower than 3 mph (5 km/h).
In addition, the number of keys initialised for
your vehicle is displayed.
L2 3 /3 means that
three keys have been initialised . This feature
enables used car buyers to make sure they
have received all of the keys.
If you are given only two keys, for ins tance ,
you should take the vehicle and the ex isting
keys to an authorized Audi dealer to have the
missing key d isabled .
It is also important to
notify your insurance company about the loss.
Setting the speed warning
By pressing the !SET ! button briefly, you can
set threshold 1 of the speed warning wh ile
you are driving
c::> page 88 . By maintaining II>

Instrument s and warnin g/indic ator ligh ts 13
misfiring and fuel could enter into the ex ­
haust system . The catalytic converter
could then overheat and be damaged .
Warning/indicator
lights
Description
The indicator lights in the instrument cluster
blink or turn on. They indicate functions or
m alfunctions
c::> .&. .
Messages may appear with some indicator
lights. A warning signal will sound at the
same time . The messages disappear again af­
ter a short t ime. To display a message again,
press the
I S ET I bu tton c::> page 11 . If several
malfunction s occur, each of the indicator/
warn ing lamps will be d isplayed in succession
for about two seconds at a time.
Some ind icators ligh ts in the display can turn
on in several colors.
A WARNING
- Failure to heed warning lights and other
important vehicle info rmation may result
in serious personal injury o r vehicle dam­
age.
- Whenever sta lled or stopped for repa ir,
move the vehicle a safe dis tance off the
road, stop the engine, and turn on the
emergency flasher
c::> page 49.
- T he engine compartment of any motor
vehicle is a poten tially hazardous a rea.
Before you check anything in the engine
compartment, stop the engine and let it
cool down. Always exercise extreme ca u­
t ion when working under the hood
c::> page 214.
@ Tips
Ma lf u nctions or faults w ill be identified e i­
ther with a red symbo l (pr iority 1 -Dan­
ger!) or with a yellow symbol (pr iority 2 -
Warn ing).
Overview
Some indicator lights turn on b riefly to check
the function of that system whe n you swi tch
the ignition on. These systems are marked
with a../ in the fo llowing tables. If one of
these indicator lights does not turn on, there is a ma lfunction in that system.
Red indicat or lights
Red symbo ls ind ic a te a prior ity ma lf u nct ion -
Danger!
- Pull off the road.
- Stop the vehicle .
- Turn o ff the engine.
- Check the malfunctioning system . Contact
your authori zed Audi dealer or qualified
workshop for assistance.
USA model s:
Brake system ../
c::> page 15
Canada models:
Brake system ../
c::> page 15
USA models:
Electromechanical parking brake
c::> page 16
Canada model s:
Electromechanical parking b rake
c::> page 16
Safety belts
c::> page 16
Electromechanical steering ,/
c::> page 191
Battery
c::> page 17
E ngine oil pressure
c::> page 17
Engine oil leve l
c::> page 17
Engine coo ling system
c::> page 17
Steering column loc k
c::> page 18

Instruments and warning/indicator lights 15
Sport d iffer ential*
¢ page 22
Ign it io n loc k
¢pag e 22
Steering co lumn lock
¢ pag e 18
Electromec hanical steer ing, dy­
nam ic steer ing* ./
¢pag e 191
Transmission
- m ultitronic, tiptronic
¢ page 97
- S tronic
¢ page 97
T ran smi ssio n
- S tron ic
¢p age 9 7
Other indicator lights
CRUISE
Turn s ignals
¢ page 23
USA models: Cr uise con trol
¢page 89
Canada models: Crui se con tro l
¢p age89
Adaptive cruise cont ro l*
¢ page 102
Adaptive c ruise cont rol *
¢ page 1 02
High beam
¢ pag e48
BRAKE /((J)) Brake system
The light illum inates when the ignition is
switche d on .
It goes out after the engi ne has
been started. Th is in dicates that the bra ke
warn ing light is functioning properly.
If the brake warning light does not light up
when the engine is cranking , there may be a
malfunction in the electrical system. In this
case, contact your authorized Audi dealer.
I f t he b rake sy stem warning/ind icator light
turns on, t here is a bra ke system malfunction .
• (USA models)/ . (Canada models) Stop
vehicle and check brake fluid level
If t he indic ator lig ht tu rns on and the m es­
s a ge a ppe ars, pro ceed as fo llows:
.,. Pull off t he roa d.
.,. Sto p t he vehicle .
.,. Turn off t he engi ne.
.,. Check t he bra ke fluid level ¢
page 224.
.,. Con tact yo ur nea rest au thorized re pair fa -
cility if necessary .
Warning! Fault in brake system. Contact
dealer
If the ABS ind icator light CD (USA mode ls)/
lG) < C anad a mo de ls), the ESC in dicato r light
If.) and the bra ke sys tem in dicat or lig ht
• (US A mo dels)/ . (Canada mode ls) turn
o n and the messa ge appears, the ABS, ESC
and brakin g distr ibution are not workin g¢ &. .
C arefu lly dr ive to your author ized Au di de aler
immedi ately to have the ma lf u nct ion correct ­
ed ¢&. .
• (USA models)/ . (Canada models) Park­
ing brake system fault! See owner's manual
- If th e in di cator light and the m essag e ap -
pe ar
when stationary or after switching the
ignition on ,
check if yo u ca n re le a se the
p arki ng br ake. Afte r relea sing the park ing
bra ke, ca re fully drive to your au thori zed
A udi dea le r i mmediately to have the ma l­
fu nct ion corrected . If yo u cannot release t he
parking brake, see k professiona l assistance .
- If the in dicator light and the message ap ­
pea r
while driving , th e e mergency bra king
fu nction may not be available. It may not be
possible to set the par king brake or re lease
it once it has been set. Seek profess io na l as­
sistance.
( U SA mode ls) : If th e warn ing lig ht. and the
warning light
fi] appear togethe r, immedi­
ate ly contact yo ur aut horized Aud i dealer o r
qualified wo rks hop t o have a ll brake pads in­
s p ected
¢ page 20.
When the light comes on, an aud ible warning
s ignal is also g iven. .,.

Instruments and warning/indicator lights 17
0 Battery
The. warni ng/ind icator lig ht ill umin ates
when yo u switc h on th e igni tion and mu st go
ou t aft er the engine has s tarte d.
• Alternator fault: Battery is not being
charged
I f the i ndicator lig ht t urns on and t he mes­
sage appears, the re is a malf unction in t he
gen erato r or vehicle e lectr ica l system .
Drive to yo ur autho rized Aud i dea le r or quali­
fied workshop immediately . Because the vehi­
cl e ba ttery is disc harging, tur n off a ll unnec­
essa ry ele ct rical eq uipment suc h as th e radio.
S eek profession al ass is ta nce if the batte ry
ch arg e leve l is t oo low.
(•) low battery: Battery will be charged
while driving
If t he indicator lig ht t urns on and t he mes­
sage appears, the re may be limited starting
ab il ity .
If
t hi s message turns off after a litt le w hile,
the battery charged enough wh ile driving.
If t he message does not turn off, have your
author ized Audi dealer or qua lified wor kshop
c o rrect the malfunctio n.
't:::7: Engine oil pressure
The red en gine oil pressure warning symbol
requires immediate service or repair . Driving
with a low-oil -pressure indication is likely to
inflict severe damag e to the engine.
• Turn off engine! Oil pressure too low
If th e ind ic a tor lig ht tur ns on an d th e me s­
sage a ppears, the oil press ure is too low .
~ Pull off the road.
~ Sto p th e ve hicl e.
~T urno ff th e e ngine.
~ Check the engine oil level <=> page 219.
~ If the engi ne oi l leve l is too low , add engine
o il
<:!) page 219. Make sure that the oil pres ­
s ur e warning symbol. appea rs no longer
i n t he d isp lay before you start d riving aga in.
~ If the en gine o il level is co rrec t and the in di­
cato r light still turns on, turn the e ngine
off
and do not cont inue driv ing . See k pr ofessi o­
na l assistance .
(D Tips
- The engine oil pressure symbol. is
not an indicator for a low engine oil lev­
el. Do not rely on it. Instead, check the
oil level in your engine at regular inter­
vals, preferably each time you refuel,
and always before going on a long trip.
- The yellow oil level warning indication
Ill requires oil refill or workshop serv­
ice without delay . Do not wait until the
red oil pressure warning. starts to
flash before you respond to the low oil level warning
Ill. By then, your engine
may already have suffered serious dam­
age.
·
~ .. Engine oil level
• WARNING: Please add oil immediately
If the indica to r li ght and the message a ppear,
add engine oil immediately
c:!) page 216 .
El Add oil, max XXXX l. You may cont. driv .
When the symbol El and dr ive r message ap ­
pear, add the amoun t of oil app ear ing in t he
display at t he next oppo rtunity
r:=> page 21 6.
-L Engine cooling system
A malfunction in the engine cooling system
must b e repaired as soon as possibl e .
• Turn off engine and check coolant level
If the indicato r light turns on and the mes­
sage appears, the coolant temperature is too
high or the coolant leve l is t oo low.
~ Pull off t h e roa d.
~ Stop the vehicle.
~ Tu rnoff the engine .
~ Check coolant level<=> page 221 .
~ Add coolant if necessary <=> page 222.
~ Continu e dr iv in g o nly afte r the engin e cool-
ant wa rning/ind icator light goes ou t. ..,.

20 Instrum ent s a nd w arn in g/i ndic ato r light s
Contact your authorized Audi dealer as
soon as possible.
- USA models: If the . warning light and
the
rJl1 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 acci­
dent . Have your vehicle repaired immed i­
ately by your authorized Audi dealer or
qualified workshop. Dr ive slowly and
avo id sudden, hard brake applicat ions.
- Canada models: If the brake warn ing
light . and the ABS warning light
[IJ
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 acc ident. Have your vehi­
cle repaired immediately by your author­
ized Audi dealer or qualified workshop.
Drive slowly and avoid sudden, hard
brake applicat ions.
~ /!J.' Safety systems
The fl (USA models)/ E,I (Canada models) in­
d icator light monitors the safety systems (e .g.
a ir bags, pretensioners) and ill uminates for a
few seconds each time you switch the ignition
on.
I f the
fl (USA mode ls)/ E,I (Canada models)
i ndi cato r light does not go out, or if it illumi­
nates wh ile you are driv ing, or if it sta rts to
blink, then there is a ma lfunction somewhere
in the system.
If the light does not illuminate
when you switch the ignition on, this also means there is a malfunction.
A WARNING
If you have a malfunction in the safety sys­
tems, contact your author ized Audi dealer
immediately. Otherw ise the safety sys­
tems may not work properly in an acci­
dent.
l) .: USA mode ls on ly
(0) Worn brake pads
llJ Br ake pad s!
If the warning light illuminates, immed iately
contact your authorized Audi dealer or quali­
fied workshop to have all brake pads inspect­ ed . On USA models the warn ing light
llJ
comes on together with the warning light •.
Both sets of brake pads on an axle must al­
ways be replaced at the same time.
A WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the warning light
llJ and the warning
light
. 1) with the message Brake pads!
comes on in the instrument cluster dis­
play, immediately contact your author­
ized Audi dealer or qualified workshop to
have all brake pads checked or replaced if
necessary.
EPC Electronic power control
This warning/indicator light monitors the
electronic power control.
The l3i warn ing/ indicator light (Electron ic
Power Control) illuminates when you sw itch
the ignit ion on as a function check.
(D Tips
If this warning/ indicator light illum inates
while you are driving, then there is a mal­
funct ion in the engine electronics. Have
the malfunct ion corrected as soon as pos­
s ible by your authorized Audi dealer or a
qualified repa ir facility.
Ci Malfunction Indicator Lamp (MIL)
T he Ma lfun ction Indicator Lamp (MIL) is par t
of the On-Board Diagnostic (OBD II) system.
-
The symbo l ('4 lights up when the ignition is
switched on and will turn off after the engine
has started and has settled at a constant idle
IJ>,

Instruments and warning/indicator lights 21
speed. This ind icates that the MIL is working
properly.
The warning light illuminates when there is a
mal funct ion in the engine e lectronic system.
Contact your authorized Audi dealer and have
the ma lfunction corrected .
An improperly closed fuel filler cap may also
cause the MIL light to illum inate
r::!,> page 212.
For more informat ion r:!,> page 30 .
!?) Engine speed limitation
App lies to vehicles: wit h eng ine speed lim itat ion
Ill Do not exceed max. engine speed of
XXXX rpm
The Ill symbol illuminates when there is an
engine control malfunction . The
'3i indicator
l ight in the instrument cluster also illumi­
nates. The engine speed is lim ited to the
speed displayed in the driver information sys ­
tem . Keep in mind that the engine speed will
not exceed the va lue disp layed in the driver in­
formation system, for example when down­
shifting.
Drive to your authorized Audi dea ler immedi­
ately to have the malfunction corrected .
'.!2:;,.,, Engine oil sensor
• Oil level! Sensor defective
If the symbol illuminates, contact your au­
thorized Audi dealer and have the oil sensor
inspected. Until you have this done, check the
oil level each time you refuel just to be on the
sa fe side
r:!,> page 219 .
Bil Tank system
(iD Please refuel
If the indicator light turns on for the f irst
time and the message appears, there are
about 2.1- 2 .4 gallons (7 -9 liters) of fuel left
in the tank. Time to refuel
r::!,>page 211 .
DD Fuel tank system malfunction! Contact
dealer
If the indicator light turns on and this mes­
sage appears, there is a malfunction in the
tank system.
Drive to your authorized Audi dealer immedi­
ate ly to have the malfunction corrected.
C> Windshield washer fluid level
II Please refill washer fluid
If the symbol illum inates, add windshield
washer fluid to the washer system and also to
the headlight washer system*
r:!,> page 228.
~ Windshield wipers
El Windshield wiper defective
The re is a malfunc tion with the windshie ld
wipers .
Drive to your author ized Audi dealer immedi­
ate ly to have the malfunction corrected .
~/ }D /0$ Defective light bulb warning
If the S:$ indicator light turns on, a bulb has
failed. The message indicates the location of
the bu lb.
- If the
El indicato r light also turns on, then
a fo g lig ht has failed. The position of the in­
dicator light corresponds w ith the location
on the vehicle .
- If the
II indicato r light also turns on, then
a rear fog * light has failed. The position of
the indicator light corresponds with the lo­
cation on the vehicle .
T his wa rning can also occur if the light switch
is in an unengaged position between two sym­
bols.
Vehicle lights: System fault!
If the message appears, there is a malfunc ­
tion in the headlights or light sw itch .
Drive to your au thori zed Audi dealer immedi-
ately to have the malfunction corrected .
IJJ,,

24 Driver information d isplay
Driver information
display
Introduction
The Driver information display inside the in­
strument cluster provides you, the driver,
with important information.
Fig. 7 Instrument cluster: ce nter display
Fig. 8 Wiper lever: controls for the menu display
Center display
With the ignition on, the display in the Dr iver
I nformation System shows the following in­
formation:
- CD* inserted or Radio* station set
- Outside temperature*: At temperatures be-
low 41 °F (+S °C), a snowflake symbol ap­
pears in front of the temperature display
c::> .&_.
-Warning if one of the doors, front lid or en-
gine compartment lid is not closed.
Additional functions
You can open the following functions in the
Driver Information System display by pressing
the
! RESET I button c::> fig. 8 one or more times:
Digital speedometer*
Tire pressure monitoring*
<::>page249
Trip computer* <::>page25
Efficiency program* <::> page 27
Service interval display <::> page 29
Speed warning <::> page 87
Gearshift selector positions <::> page 92
Automatic transmission
Adaptive cr uise control*
<::> page 99
Auto Check Control
Some functions and vehicle components are
scanned for their operating status when you
switch the ignition on and whi le you are driv­
ing . Malfunctions or required service proce­
dures are signaled audibly and indicated by
red and yellow illuminated symbols and re­
minders in the d isplay.
A WARNING
--- Never rely exclusively on the outside
temperature display to determine if a
road surface is icy or not . Keep in mind
that road surfaces , espec ially br idges
and overpasses, could be ice covered and
slippery even at an outside temperature
above 41 °F (+S °C).
- Always remember,
even if the "snow­
flake" symbol (ice warning) does not ap­
pear in the disp lay, black ice cou ld be on
the road.
- Always reduce your speed and drive with
specia l care in cold weather conditions
when the chance of encountering icy
road surfaces increases.
¢j) Tips
If the vehicle is stationary, or if you are
driving at a very low speed, the tempera­
ture shown in the display might be slightly
higher than the actual outside tempera­
ture. This i.s caused by the heat being radi­
ated from the engine .

30 Driver information display
Resetting the service interval display
Your authorized Audi dealer will reset the cor­
responding service schedule after performing
the appropriate service on yo ur vehicle . Yo u
also have the possibility to reset the oil
change schedule after having performed an
oil change according to Audi specifications.
Select
I CAR I function button > Service interval
display > Reset oil change interval
or ICARI
function button> Car systems* control but­
ton
> Servicing & checks > Reset oil change
interval.
(D Note
If you disconnect the battery terminals, no
calculations can be made for the serv ice
interval display during this time and no
service rem inder wi ll appear. Remember
that observing the proper service intervals
is vitally important to extend ing the life of
your vehicle, particu larly the eng ine, and
maintaining its value. Even if the mileage
driven is low, the maximum period of one
yea r from one service to the next must not
be exceeded .
@ Tips
-Do not reset the display between oil
changes, otherwise the display will be in­
correct.
- The information in the Service Reminder
r ema ins stored even when the vehicle
battery is disconnected.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) ¢4' i n
the instrument cluster is part of the On-Board
Diagnostic (OBD II) system.
The warning/indicator light illuminates when
the ignition is switched on and goes out after
the engine starts and the idle has stabilized .
This indicates that the MIL is working proper­
ly.
If the light does not go out after the engine
is started, or illuminates while you are driv­
i ng, a malfunction may exist in the eng ine sys­
tem . If the light illuminates, the catalytic con­
verter could be damaged .
Continue driving
with reduced power (avoid­
ing sustained high speeds and/or rapid accel­
erations) and have the cond ition corrected.
Contact your authorized Audi dealer.
If the light il luminates, the electronic speed
limiter may also be malfunct ioning. For more
information
c:> page 31 , Electronic speed
limiter.
An improperly closed fuel filler cap may also
cause the
MIL light to illuminate
c:>page 212.
On-Board Diagnostics
Fig . 18 Locat io n of Data Link Con nector (D LC)
On-Board Diagnostics monitors the compo ­
nents of your emission control system . Each
monitored component in your engine system
has been assigned a code. In case of a mal­
function, the component will be identified
and the fault stored as a code in the control
module memory.
The MIL light may also illuminate if there is a leak in the on-board fuel vapor recovery sys­
tem. If the light illuminates after a refueling,
stop the vehicle and make sure the fuel filler
cap is properly closed
c:> page 212 .
In order to make an accurate diagnosis, the
stored data can on ly be displayed using spe­
c ial diagnostic equipment (generic scan tool
furOBD) .
~

34 Openin g and clo sing
keys. Unguarded access to the keys pro­
vides children the opportunity to start the engine and/or act ivate vehicle sys­
tems such as the power w indows etc . Un­
supervised operation of any veh icle sys­
tem by ch ildren can res ult in serious in­
Jury.
- Do not remove the key from the ignition
lock until the vehicle has come to a com­
plete stop. Otherwise the steering col­
um n loc k co uld suddenly e ngage -caus­
ing the risk of an accident.
@ Tips
- The operation of the remote contro l key
c a n be tempo rarily disrupted by in terfer­
ence from tran smi tters in t he v ici nity of
the veh icle work ing in the same frequen­
cy ra nge (e.g . a ce ll phone, radio equip­
ment).
- Fo r security reasons, replacement keys
are on ly available from author ized Audi
dealer.
- For Decla ration of Compliance to United
States FCC and Industry Canada regu la­
tions
c:> page 2 78.
Removing the mechanical key
F ig . 20 Remote ma ster key : remov ing the mec hanic al
key
" Press the release button ® c:> fig. 20 .
"Pull the mecha nica l key @out of the maste r
key .
Using the mechan ica l key , you can :
- lock and unlock* the glove compartment on
the passenger's side ¢
page 65.
-lock and unlock the lockable* rear bench
seat and pass-through *
c:> page 69.
- activate the child sa fe ty locks on the rear
doors
c:> page 42 .
-lock and unlo ck the vehicle manu ally
¢
page 38 if this should not be possible
with the master key.
- use the ignition key emergency release
¢ page 35.
Check light and battery in the master
key
Fig . 2 1 Re mote mas te r ke y: r em ov ing th e batte ry hold­
e r
Check light in the master key
The check light@¢ fig. 21 in the master key
provides information about different condi­
t ions .
" The check light tu rns on br iefly once when a
button is pressed, and during an "inquiry"
by the convenience key system .
" If the check light does not come on, the bat ­
tery is dead a nd has to be replaced . In addi­
tion, when the batte ry is dead
the m indi­
ca to r li ght appears in the instr ument cluster
disp lay as well as the message
Plea se
change key battery .
Master key battery replacement
" Remove the mechan ica l key ¢ page 34 .
" Press the release button @ ¢fig. 21 on the
bat tery ho lde r and at the same time pull the
ba ttery holde r o ut o f the maste r key in the
di rection o f the arrow.
" Insta ll the new battery CR 2032 with the
"+ " sign facing down .
... Push the battery holder carefu lly into the
master key .