Driv e r inf o rmation displ a y
If the light illuminates, the electronic speed limiter may also be
malfunction ing. For more information =>
page 28, "E lectronic speed
limiter".
An impro perly closed fu el filler cap may also cause the MIL light to
illumina te
=> page 303. •
On-Board Diagnostics
Fig. 15 Locatio n of
Data Link Connecto r
(DLCl
On-Board Diagnost ics mon itors the components of your emission
control system. Each monitored component in your engine system
has been assigned a code . In case of a malfunction, the component
wi ll 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 leak in the on-board
fue l vapor recovery system . If the light ill uminates after a refue lling,
stop the vehicle and make sure the fue l fi ller cap is proper ly closed
=>
page 303.
In order to make an accurate diagnosis, the stored data can only be
displayed using special diagnostic equipment (generic scan tool for
OBD).
In order to connect the spec ial diagnostic equipment, push the plug
into the Data Link Connector (DLC). The DLC is located to the right of
the hood release => fig. 15.
Your authorized Audi dealer or a qua lified service station can inter-
pret the code and perform the necessary repair. •
Electronic speed limiter
Your vehic le may be factory equipped with tires t hat 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 t ire
failure and loss of control if the vehicle is operated at excessive
speeds, your vehicle also has an electronic speed limiter. The elec-
tronic speed limiter prevents your vehic le from going faster than the
tire speed rating . For more information => page 336 .
lf the veh icle approaches the tire speed rating, the engine control
unit wi ll turn off the fue l injectors. You will notice an immediate loss
of engine power and a drop in road speed.
If the engine contro l unit receives faulty vehic le road speed signals,
the Ma lfunction Indicator Lamp (MIU
C:, wi ll illuminate . If this
occurs, contact the nearest authorized Audi dealer for assistance.
& WARNING
Alw ays observe the posted speed limit s and adjust your speed to
suit prevailing road, traffic and we ath er condition s. Never drive
your vehicle faster than the maximum speed rating of the tire s
installed . •
Auto Check Control
Introduction
The Auto -Check contro l monitors the function of certain vehic le
features and components. It simply makes sure these features and
components are working properly. The Auto -Check control works as
long as t he igni t ion is on, as wel l as whenever the vehicle is driven. ~