Che cking and Filling
If the indicator light does not turn off, drive im-
mediately to an authorized Audi dea ler or author-
ized Audi Service Facility to have the malfunction
corrected.
A WARNING
The temperature of the exhaust system is
high, both whe n driving and after stopping
the engine .
- Never touch the exhaust ta il pipes once they
have become hot. This could result in burns .
- Do not park you r vehicle over flammable
materials such as g rass or leaves because
the high temperat ure of the emiss ions con-
t rol syst em cou ld start a f ire.
- Do not apply underbody protectant in the
exha ust system area, because this increases
the risk of fire.
- Applies to: vehicles wit h diesel particulate
filte r: always adjus t your speed to the
weathe r, road, te rra in and traffic condit ions
dur ing diesel partic ulate fi lter regene rat ion.
You should never disobey tra ffic laws in or-
der to fo llow dr iving recommendations.
(D Tips
Applies to: vehicles with diesel particulate filter
- Due to the high temperatures that occur
during diesel pa rticu late filter regenerat ion,
the radiator fan may continue runn ing after
the engine stops, even if the engine did not
reach its operat ing temperatu re.
- Noises, odors and increased speeds may oc-
cur during the regeneration.
- Always use the correct engine oil and fuel to
ens ure that the serv ice life of the d iesel par-
ticulate filter is not reduced.
318
On Board Diagnostic
System (OBD)
The On-Board Diagnostic System monitors the
engine and transmission components that influ-
ence emissions.
Fig. 260 Footwe ll on left s ide of t he vehicle: con nection
port for the On-Board Diagnostic System (OBD)
On-Board Diagnostic System
Engine data can be read out at the On-Board Di-
agnost ic System connection port using a specia l
testing device
c::> fig. 2 60 .
Indicator light
If thP ¢'4 ind icator light blink s or turns on , the re
is a ma lfunction that is causing poor emissions
quality a nd that cou ld damage the catalytic con-
verter .
Drive slowly to an authorized Audi dealer or au-
thorized Audi Serv ice Facility to have the mal-
funct ion corrected .
The ind icator light can a lso turn on if the fuel fill-
er cap is not closed correctly
c::> page 312 .
A WARNING
Incorrect use of the connect ion port for the
On-Board Diagnost ic System can cause mal-
f unct ions, wh ich can t hen resul t in accidents
and se rious injuries.
- Only allow an a utho rized Aud i dea ler or au-
thorized Audi Se rvice Facility to read out the
e ngine da t a.
-
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