TorqFix

Selecting control unit for automatic gearbox — AUDI

Selecting control unit for automatic gearbox on Audi: 12 steps. What to remove, in what order, and what to check after.

Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.

12 steps

🧭 Before you start

Fits: platform code 70A

  • Also covered elsewhere: Fault table, page under fault code"“65535”" Control unit defective! Press → key

📋 Procedure

  1. Switch on ignition.
  2. Switch on printer with the Print key (indicator lamp in key lights up).
  3. Press key 1 for "“Rapid data transfer”" mode.
  4. Press keys 0 and 2. (02 enters address word "“Gearbox electronics”".)
  5. Confirm entry with Q key.
AUDI? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. By pressing the HELP key, a list of possible fault causes is printed out.
  2. After eliminating the possible causes of faults, again enter the address word 02 for "“gearbox electronics”" and confirm.
  3. Perform test step 1 , Electrical test.
  4. Check wiring connections to diagnostic sockets
  5. ⇒ Fault table, page under fault code"“65535”" Control unit defective!
  6. Press → key.
  7. After the HELP key is pressed, a list of the possible functions is printed out.

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.