Audi S4 Premium Plus 2018 Wiring Diagrams PDF | 3.0L TFSI Quattro

The Audi S4 2018 Wiring Diagrams Manual delivers comprehensive factory schematics for the B9 platform equipped with the 3.0L TFSI V6 engine. It’s designed for professional use in diagnostic, coding, and retrofit applications, providing the same circuit information found in dealership workshop systems like ElsaWin and ODIS.

Systems Covered

• Air Conditioning System (Automatic & Climatronic) – full HVAC circuits, actuators, sensors, and pressure controls

• Anti-Lock Braking (ABS/ESC) – hydraulic modulator, wheel sensors, and CAN interconnect

• Anti-Theft & Access/Start Authorization – door control units, comfort modules, keyless entry, and immobilizer

• Body Control & Comfort Modules – lighting systems, window motors, mirrors, and seat controls

• Vehicle Electrical System & CAN Networks – ECU data lines, communication gateways, and diagnostic connector paths

Technical Highlights

• Color-coded OEM circuits for all control modules

• Full ECU pinouts with wire colors and terminal IDs

• Ground distribution and fuse box mapping

• LIN/CAN/FlexRay data topology overview

• Compatible with VCDS, OBDeleven, and ODIS Engineering

• Essential for coding, retrofitting, or fault tracing

Table of Contents

• Air Conditioning System

  • Automatic A/C with Climatronic

  • Temperature Sensors & Recirculation Control

• Anti-Lock Brakes System

  • ABS Pump, Wheel Sensors, and Pressure Circuits

• Anti-Theft & Access/Start Authorization

  • Door Locks, Comfort Module, Keyless System

• Body Control Modules

  • Lighting, Window, and Mirror Circuits

• Vehicle Electrical System

  • Data Bus (CAN, LIN, FlexRay)

  • Power Supply and Fuse Panels

  • ECU Communication & Diagnostic Port

File Information

• Format: PDF (Digital Download)

• Language: English

• Pages: 156

⚠️ Notice

Digital delivery only — no physical media is shipped. Ensure Adobe Reader or any modern PDF viewer is installed.