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with respect to the correctness of information in this document. Copyright by AUDI AG.
Underbody: checking trim, wheel housing liners, side members
and pipes/wiring for damage, and checking that they are properly
secured ⇒ page 51
First-aid kit: checking and recording expiry date ⇒ page 66
Shipping mode: deactivating ⇒ page 28
Warning triangle: checking availability ⇒ page 66
Plenum chamber and water drains: checking for dirt
⇒ page 123
Spark plugs: renewing ⇒ page 85
3.1 Diesel particulate filter: reading out ash
deposit volume
Table of test values and procedure guidelines:
Engine Engine code Measured value designa‐
tion for diagnostic tester
Maximum value for ash
deposit
6-cyl. diesel engine 3.0 ltr.
TDI
CDTA, CDTB, CDTC,
CLAB, CMHA, CTBB
Particulate filter, oil ash de‐
posit volume
Oil ash deposit volume:
370 ml
6-cyl. diesel engine 3.0 ltr.
TDI
CPNA, CPNB, CTBA Particulate filter, oil ash de‐
posit volume
Oil ash deposit volume:
380 ml
8-cyl. diesel engine 4.2 ltr.
TDI
All Exhaust bank 1: particu‐
late filter, oil ash deposit
volume
Exhaust bank 2: particu‐
late filter bank 2, oil ash de‐
posit volume
Oil ash deposit volume:
550 ml
Procedure:
– Connect vehicle diagnostic tester ⇒ page 20 .
– Select Diagnosis mode and begin diagnosis.
– Perform vehicle identification.
– De-select “Working with Guided Fault Finding” by removing
v and press Apply .
– Continue to follow instructions on screen.
– Switch to “Control units” tab.
– Select control unit “01 — Engine electronics” and carry out
following functions via right mouse button:
♦ Identify control unit
♦ Guided Functions
♦ 01 - Read measured values
– Select desired measured value (see table of test values and
procedure guidelines ⇒ page 25 ) by entering v and confirm‐
ing with OK
.
– Evaluate measured value and follow further instructions on
screen.
– Perform the following measures according to the measured
value:
Result: Measure:
Measured value < critical
value
Vehicle can be driven for a further 30,000 km (19,000 miles).
Audi A8 2010 ➤
Maintenance - Edition 11.2014
3. Maintenance 25
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