malfunction, the component will be identified
and the fault stored as a code in the control module memory.
The MI L light may a lso illuminate if there is a
l eak in the on-board fue l vapor recovery sys
tem . If the light illuminates after a refuelling,
stop the veh icle and make sure the fue l filler
cap is properly closed ¢
page 178.
In o rder to make an accurate diagnosis, the
stored data can only be displayed using spe
cial diagnostic equipment (gener ic scan tool
for OBD).
I n o rder 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 ¢
fig. 24.
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
malfunctions, which can increase the risk
of a coll is ion!
Electronic speed limiter
-
Your veh icle may be factory equipped with
tires that are rated for a maximum speed of
130 mph (210 km/h) . T his is less than the
maximum speed o f yo ur vehicle. To reduce the
risk of s udden tire failure and loss o f control if
the vehicle is operated at excessive speeds,
your vehicle also has an electronic speed limit
er. The electronic speed limiter prevents your
veh icle from going faster than the tire speed
rating. For more informat ion ¢
page 207 .
If the engine control unit rece ives fau lty vehi
cle roadspeed signa ls, the Ma lfunction Indica
tor Light (MIL)
(ii w ill illuminate. If this oc
curs, contact the nearest author ized Audi
deale r for assistance .
Driver in formati on sys tem 3 1
S models
Your vehicle's top speed is elect ronically limit
ed to 155 mph (250 km/h) .
If the engine control unit receives faulty veh i
cle roadspeed signals, the Malfunction Ind ica
tor Lamp (MIL)
¢"4 will illumina te . If this oc
curs, contact the nearest authorized Audi
dealer for assistance.
RS model s
Your vehicle's top speed is electron ically limit
ed to 175 mph (280 km/h).
If the engine control unit receives faulty vehi
cle roadspeed signals, the Malfunction Ind ica
tor Lamp (MIL)
¢"4 will illuminate . If this oc
cu rs, contact the nearest authorized Audi
dealer for assistance.
A WARNING
-
A lways observe the posted speed lim its
and adjust your speed to suit prevailing road, traffic and weather conditions. Never
drive your vehicle faster than the maxi
mum speed rating of the tires installed.
