28 Driver information d isplay
On-Board Diagnostics
Fig. 22 Locat ion of Data Link Connector (DLC)
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 ident ified
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 fue l vapor recovery sys
tem.
If the light illuminates after a refuelling ,
stop the veh icle and make sure the fuel filler
cap is proper ly closed (on ly vehicles with gaso
line engine)
c::>page 259.
In o rder to make an accurate d iagnosis, the
stored data can only be displayed using spe
cial diagnostic equipment (generic 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
c::> fig . 22.
Your author ized Audi dealer or qualified work
shop can interpret the code and perform the
necessary repair.
A WARNING
Do not use the diagnostic connector for
personal use. Incorrect usage can cause
ma lfunctions, which can increase the risk
of a collis ion!
Electronic speed
limiter
Your vehicle may be factory equipped w ith
t ir es 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 fa ilure a nd loss of contro l if
the vehicle is operated at excessive speeds,
your vehicle also has an elec tronic speed limit
er . The e lectronic speed limiter prevents your
vehicle from going faster than the tire speed
rating . For more information
c::> page 291.
If the engine control unit receives faulty vehi
cle roadspeed signals, the Malfunction Indica
tor Lamp (MIL)
II will illuminate. If this oc
curs, contact the nearest authorized Audi
dealer for assistance.
A WARNING
-
Always observe the posted speed limits
and adjust your speed to suit prevailing
road, traffic and weather cond itions . Never
drive your vehicle faster than the maxi
mum speed rating of the tires installed.
-
Speed warning system
Overview
The speed warning system helps you to keep
your driving speed below a set speed limit.
T he speed warning system warns the driver if
he exceeds a previo usly stored maximum
speed . A warning tone wi ll so und as soon as
the vehicle speed exceeds the set speed by about 3 mph (3 km/h). At the same time, a
warning symbol appears in the display.
The speed warning system has
two warning
thresholds
that function independently of
each other and that have somewhat different
purposes:
Speed warning 1
You can use speed warning 1 to set the maxi
mum speed while you are driving. This setting "'
