Audi Steering Wheel

Introduction

• 
  The driving wheel.
• 
  There are 5 buttons and two potentiometers.
• 
  Driving Wheel from the back
• 
  The connector

A6 Avant (4F5, C6) 03.05.08.11, 2006 2967 D. Do NOT tap airbag wiring (yellow connectors)

• J527 – Steering Column Electronics Control Unit
• J453 – Multifunction Steering Wheel Control Unit
• E221 – Steering Wheel Operating Unit (buttons)
• F138 – Clock spring / slip ring assembly
• T16b – 16-pin connector behind the steering column trim

E221 Structure

• E440 Left multifunction buttons
  • MODE
  • Volume +
  • Volume -
  • Voice/Telephone (depending on version)
• E441 Right multifunction buttons
  • Menu navigation
  • OK/Select
  • Telephone functions
• E438 Tiptronic +
• E439 Tiptronic -
• J453 Multifunction steering wheel control unit (mounted behind right button panel)

LIN (Local Interconnect Network):

• E221 -> J453 -> J527

https://portal-diagnostov.com/en/2021/01/24/6692857-audi-a6-2006-multifunction-steering-wheel-wiring-diagrams-pin-connecto/?utm_source=chatgpt.com

Connectors

Connector Information

The wiring documentation identifies:

• T16b = 16-pin connector behind the steering column switch trim.
• T4e = Yellow 4-pin airbag connector.
• The multifunction steering wheel signals pass through the clock spring (F138) to J527 via T16b