A8 Quattro Sedan V8-4.2L (BGK) (2006)
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Connect battery.
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Top off ATF => [ ATF, Draining and Filling ] See: Fluid - A/T/Service and Repair/09EA Transmission/ATF, Draining or Filling After Repair.
Wiring Harness in Transmission
Removing
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Remove mechatronics unit => [ Mechatronics Unit ] .
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Touch vehicle ground with hand (without gloves) to discharge static.
CAUTION!
‹› Always discharge static by touching a grounded object, e.g. vehicle ground, before touching or removing mechatronics unit.
‹› Never touch contacts in 16-pin connector, as the static charge could destroy the control module and thus the mechatronics unit.
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Carefully pry wiring harness - A - from mechatronics unit - B -. At the same time, detach tab - arrow - on backside of wiring harness from
mechatronics unit.