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30
Instruments
and warning/indicator
lights
Display brightness
You can adj ust the display brightness in the
MMI. The display brightness decreases auto -
matica lly as the amo unt of light decreases.
The basic level of brightness is adjusted with
the instrument illumination c:> page 46.
(D
Note
To prevent scratches on the glass covering
the Head-up Display, do not place any ob-
jects in the projection opening.
@
Tips
- Sunglasses with polarization fi lters and
unfavorable lighting conditions can af-
fect the display.
- A special windshield is needed for the
Head-up Display function.
- For information on cleaning, refer to
c:> table on poge
212.
On-Board
Diagnostic
system
(OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL)
II!
in
the instrument cluster is part of the On-Board
Diagnostic (OBD II) system.
The warning/indicator
light ill uminates 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-
ing, a ma lfunction may exist in the engine 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 condition corrected.
Contact your authorized Audi dealer.
If the light illuminates , the electronic speed
limiter may also be malfunctioning. For more
information
r=.>
page 31, Electronic speed
limiter .
An improperly closed fuel filler cap may also
cause the MIL light to illuminate
c:> page
218.
On-Board Diagnostics
Fig. 16 Locat ion of Data Li nk Connector (DLC)
On-Board Diagnost ics monitors the compo-
nents of your em ission 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 illum inates after a refuelling,
stop the vehicle and make sure the fuel filler
cap is properly closed c:> page
218.
In order to make an accurate diagnosis, the
stored data can only be displayed using spe-
cial diagnostic 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 hood release r=.> fig . 16 .
Your authorized Audi dealer or a qualified
service station can interpret the code and per-
form the necessary repair.
A
WARNING
Do not use the diagnostic connector for
personal use. Incorrect usage can cause
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