Che cking and Filling
- Do not a pp ly under body protectant in t he
exhaust system area, because this increases
the risk of fire.
On Board Diagnostic
System (OBD)
The On-Board Diagnostic System monitors the
engine and transmission componen ts that influ -
ence emissions.
Fig. 264 Footwell on left side of t he veh icle : conn ect ion
port for the On-Board Diagno st ic Syste m (OBD)
On-Board Diagnostic System
Engine data can be read out at the On-Board Di-
agnostic System connec t ion po rt usi ng a special
tes ti ng device
~ fig. 26 4 .
Indicator light
If thP ¢.j indicato r light blinks or tu rns on, there
is a malfunction that is causi ng poor emissions
qua lity and t ha t could damage the cat alytic con-
verte r.
Drive s lowly to an author ized Audi dealer or au -
thor ized Audi Se rvice Facility to have the ma l-
function corrected .
The indicator light can also t ur n on if t he fuel fill-
er cap is not closed correct ly ~
page 315.
A WARNING
Incorrect use of the connection port fo r the
On-Board Diagnostic System can cause mal-
functions, which can then result in acciden t s
and ser ious injuries.
- Only allow a n author ized Audi dealer or au-
t horized Aud i Service Faci lity to read out the
engi ne dat a.
318
-
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and fill ing fluids, there is a risk of in-
jury, scalding, accidents, and burns. For thi s
reason, follow all the warnings and general
safety precaut ions provided in the following in-
formation. The engine compartment is a dan-
gerous area.
~ .&,.
A WARNING
To reduce the risk of injur ies, comp lete the
follo wing steps before opening t he hood:
- Turn t he engine off.
- Switch the ignit ion off.
- Set the park ing brake.
- Move the selector lever into the
P position.
- Never open the hood when there is steam or
coo lant escaping from t he engine compart-
ment, because there is a risk that yo u could
be burned . Wait unt il no steam or coolant is
escapi ng.
- Let the eng ine cool down .
- Keep children away from the eng ine com-
pa rtment .
- Never sp ill fluids on a hot engine . These flu-
ids (such as the anti-freezing agent con-
tained in the coolant) ca n ignite .
- Avoid short circuits in the electrical system .
- When working in the engine compa rtment,
remember that the radiator fan can switch
on even if the ignition is switched off, wh ich
increases the risk of persona l injury.
- Never open the cap on the coolant expan-
sion tan k when t he engine is warm . The
coo ling system is under pressure.
- To protect your face, hands , and arms from
hot steam or coolant , cover the cap wit h a
large cloth when op ening .
- Do not remove the engine cover under any
circumstances. This increases the risk of
burns .
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