26 Drive r in form ation d ispl ay
(D Note
-Only reset the oi l change display when
you have completed an o il change .
- If you d isconnect the battery term inals,
no calculatio ns can be made for the serv
ice interval display during this time and
no service rem inder will appear . Remem
ber that observing the proper service in
tervals is vitally important to extending
the life of you r vehicle, particularly the
engine, and maintaining its value. Even if
the mileage dr iven is low, the max imum
period of one year from one serv ice to
the next must not be exceeded.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Ind icator 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 ign ition is switched on and goes o ut after
the engine starts and the idle has stabilized.
Th is indicates that the MIL is working proper
l y.
If the light doe s not go out after the eng ine
is started, or illuminates wh ile you are driv
ing, a ma lfunction may exist in the engine sys
tem . If the light illuminates, the catalytic con
verter cou ld be damaged.
Continue driving
w ith reduced pow er (avoid
ing sustained high speeds and/or rapid accel
erations) and have the condition corrected.
Contact your authorized Audi dealer .
If the light ill uminates, the electronic speed
limiter may also be ma lfunctioning . For more
information
¢ page 2 7, Electronic speed
limiter.
An imp roperly clo sed fuel filler c ap m ay als o
c a u se th e M IL l ight to illuminate
¢ page 177.
On-Board Diagnostics
Fig. 16 Locat io n of Data Li nk Conn ector (DLC)
On-Board D iagnostics monitors the compo
nents of your em ission contro l system . Each
monitored component in your engine system
has been ass igned a code . In case of a mal
funct ion, the component will be identified
and the fault stored as a code in the control
module memo ry.
The MIL light may also illuminate if there is a lea k in the on-board fuel vapor recove ry sys
tem . If the ligh t illuminates after a refueling,
stop the vehicle and make sure the fuel fille r
cap is prope rly closed (only vehicles w ith gaso
line engine) ¢
page 177.
In order to make a n accurate diagnosis, the
stored data can on ly be displayed using spe
c ial d iagnostic equipment (generic scan tool
for OBD).
In order to con nect t he special diagnostic
equipment, push the plug in to the Data Link
Connector (D LC). The D LC is located to the
right o f the hood release
<::!;> fig. 16.
Your a uthorized Audi dea le r or qua lified wor k
shop can interpret the code and perform the
necessary repair.
,&_ WARNING ~ -
Do not use t he diagnost ic connecto r fo r
personal use . Incorrect usage can cause
mal functions, wh ich can increase the risk
of a collision!
