Installation instructions:
Electrical system for towing hitch
Reinstalling removed components
Note
Tighten the fastening screws of the removed components with a V.A.G. 1331 torque wrench
to the following torques:
•
Electrical system battery –M8-: 15 Nm
•
Component carrier, battery manager (BEM) –M6-: 6 Nm
26. Insert and fasten battery manager (BEM).
27. Insert and fasten battery, reconnect the connections.
Checking correct operation
28. Match the vehicle code in the following control units via selected diagnostics by coding
"Anhängerkupplung verbaut 1D2" (towing hitch installed 1D2):
01 Engine control unit
13 Distance control ACC
19 Diagnosis interface for data bus
34 Level control
45 Brake electronics ESP
76 Park distance control
29. Check the trailer functions with the help of a suitable test instrument (with load resistors) or
with the help of a trailer.
30. Secure all cables using cable ties.
31. Refit any parts and/or covers removed for installation.
Audi A8
305 226 391 101 - 001 - 06/06
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