Wiring harness in transmission, removing and installing

WARNING: This page is about a different car, the 2010 Audi A8, 2009 Audi A8, 2008 Audi A8, 2007 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Removing

Remove Mechatronic unit → Mechatronic unit, removing and installing .
Touch some grounded object (e.g. car, lifting platform) with your bare hand to discharge yourself of static electricity.

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.

Fig 1: Locating Wiring Harness With Connector Is Attached To Mechatronics Unit

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Carefully pry wiring harness - A - from mechatronics unit - B -. At the same time, detach tab - arrow - on backside of wiring harness from mechatronics unit.

NOTE:

If the tab - arrow - on the backside of the wiring harness breaks off, the wiring harness must be replaced → Wiring harness in transmission, removing and installing .

Carefully disconnect connector - C - from socket - D - of mechatronics unit.

Installing

Installation is in reverse order of removal, note the following:

Carefully connect connector - C - into socket - D - of the mechatronics unit.
Clip wiring harness - A - onto mechatronics unit - B -. At the same time, insert tab - arrow - on backside of wiring harness into mechatronics unit.
Install mechatronics unit → Mechatronic unit, removing and installing .
Fill with ATF → ATF, draining and filling after repairs .