On-Board Diagnostics monitors the components
of your emission control system. Each monitored
component in your eng ine system has been as-
signed a code. In case of a malfunction, the com-
ponent 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 system .
If the light illuminates after a refueling, stop the
vehicle and make sure the fuel filler cap is prop-
erly closed
¢ page 214.
In order to make an accurate diagnosis, the stor-
ed data can only be displayed using special diag-
nostic equipment (generic scan tool for OBD).
In order to connect the special diagnostic equip-
ment, push the plug into the Data Link Connector
(DLC). The DLC is located to the right of the hood
release
c> fig . 17.
Your author ized Audi dealer or a qualified service
station can interpret the code and perform the
necessary repair.
A WARNING
Do not use the diagnostic connector for per-
sonal use. Incorrect usage can cause malfunc-
tions, which can increase the risk of a colli-
sion!
Electronic speed limiter
Your vehicle may be factory equipped with t ires
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 operat-
ed at excessive speeds, your vehicle also has an
electronic speed limiter. The electronic speed
limiter prevents your vehicle from going faster
than the t ire speed rating . For more information
¢ page 243 .
If the engine control unit receives faulty vehicle
road speed signals, the Malfunction Indicator
Lamp
(Mil) Ill will illuminate . If this occurs,
contact the nearest authorized Audi dealer for
assistance .
Instruments and ind icator lights
S8
Your vehicle's top speed is elect ronically limited
to 155 mph (250 km/h).
If the engine control unit receives faulty vehicle
roadspeed signals, the Malfunction Indicator
Lamp (MIL)¢• will illuminate. If this occurs,
contact the nearest authorized Audi dealer for
assistance.
A WARNING
-
Always observe the posted speed limits and
adjust your speed to suit prevailing road, traf-
fic and weather conditions. Never drive your
vehicle faster than the maximum speed rating
of the tires installed.
29
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