2009 Audi A8 (D3f) Service and Repair Manual

This 2009 Audi A8 (D3 Facelift) Service & Repair Manual Covers

Engine & Powertrain

• Complete repair procedures for the 3.2L FSI V6 engine
• Complete repair procedures for the 4.2L FSI V8 engine
• Complete repair procedures for the 6.0L W12 engine (where equipped)
• Market-specific 3.0L TDI V6 and 4.2L TDI V8 diesel engine servicing
• FSI direct fuel injection diagnostics
• Common Rail TDI diesel diagnostics (where applicable)
• Engine cooling and lubrication system repairs
• Intake and exhaust system servicing
• Emissions control system diagnostics
• 6-speed Tiptronic automatic transmission servicing
• quattro permanent all-wheel drive system
• Center differential servicing
• Front and rear differential repairs
• Driveshaft and axle servicing

Suspension & Steering

• Adaptive Air Suspension diagnostics
• Continuous Damping Control (CDC) servicing
• Front and rear multi-link suspension repairs
• Dynamic Steering diagnostics (where equipped)
• Suspension ride height calibration
• Wheel alignment specifications
• Steering rack servicing
• Wheel bearing replacement procedures

Braking Systems

• Hydraulic braking system repairs
• Anti-lock Braking System (ABS)
• Electronic Stability Program (ESP)
• Electronic Parking Brake (EPB)
• Brake Assist diagnostics
• Brake pad and rotor replacement
• Brake caliper servicing
• Brake fluid replacement procedures

Electrical Systems

• Complete factory wiring diagrams
• 12V electrical system diagnostics
• CAN Bus, LIN Bus, and MOST optical network diagnostics
• Battery Energy Management System
• Gateway control module diagnostics
• Charging and starting system diagnostics
• Fuse and relay identification
• Bi-Xenon headlamp diagnostics
• Adaptive Front Lighting System (AFS) diagnostics (where equipped)
• LED daytime running light servicing
• Exterior and interior lighting repairs
• Comfort system electronics diagnostics

Driver Assistance Systems

• Adaptive Cruise Control (ACC) (where equipped)
• Audi Side Assist (Blind Spot Monitoring) (where equipped)
• Audi Lane Assist (where equipped)
• Parking System Advanced
• Rear-view camera diagnostics (where equipped)
• Front and rear parking sensor diagnostics
• Tire Pressure Monitoring System (TPMS)

Climate Control & HVAC

• Dual-zone and four-zone automatic climate control diagnostics
• Air conditioning system servicing
• Refrigerant specifications
• HVAC control module diagnostics
• Heating and ventilation repairs
• Air quality sensor diagnostics

Body & Interior

• Power windows and door systems
• Central locking system
• Advanced Key (Keyless Entry and Start) (where equipped)
• Power luggage compartment operation
• MMI Navigation Plus diagnostics
• Audi multimedia interface servicing
• BOSE and Bang & Olufsen premium audio system diagnostics (where equipped)
• Power seat adjustment and memory functions
• Heated and ventilated seat diagnostics (where equipped)
• Rear seat entertainment system diagnostics (where equipped)
• Power sunroof servicing

Diagnostics & Troubleshooting

• Audi Guided Fault Finding procedures
• Diagnostic Trouble Code (DTC) analysis
• Component testing procedures
• Control module diagnostics
• Control module coding and adaptation
• Service interval reset procedures
• Wiring diagram interpretation

Common Error Codes Covered

This manual contains detailed diagnostic procedures for Audi manufacturer-specific Diagnostic Trouble Codes (DTCs) applicable to the 2009 Audi A8 (D3 Facelift).

Engine Codes

• P0087 – Fuel Rail/System Pressure Too Low
• P0101 – Mass Air Flow Sensor Performance
• P0171 – System Too Lean (Bank 1)
• P0300 – Random/Multiple Cylinder Misfire Detected
• P0420 – Catalyst System Efficiency Below Threshold (Bank 1)
• P2006 – Intake Manifold Runner Control Stuck Closed

Transmission Codes

• P0700 – Transmission Control System Malfunction
• P0715 – Input/Turbine Speed Sensor Circuit
• P0722 – Output Speed Sensor No Signal

ABS & Chassis Codes

• C1034 – Ride Height Sensor Fault
• C1146 – Electronic Parking Brake Malfunction
• C10A2 – Air Suspension Compressor Performance Fault

Network Communication Codes

• U0100 – Lost Communication with Engine Control Module
• U1111 – Function Restriction Due to Communication Fault
• U1121 – Missing Message on Data Bus

Body & Driver Assistance Codes

• B1000 – Control Module Incorrectly Coded
• B2000 – Control Module Internal Fault
• C1103 – Adaptive Cruise Control Sensor Fault (where equipped)

The manual also includes hundreds of additional Audi-specific fault codes, factory wiring diagrams, guided diagnostic routines, module coding procedures, adaptation instructions, and complete repair information.

Who Is This Manual For?

• Audi dealership technicians
• Independent European vehicle repair workshops
• Professional automotive mechanics
• Fleet maintenance departments
• Automotive engineering students
• Experienced DIY Audi owners

Whether you’re performing scheduled maintenance, diagnosing engine or electrical faults, servicing the FSI petrol or TDI diesel engines, repairing the quattro drivetrain, troubleshooting the adaptive air suspension, maintaining the MMI infotainment system, or servicing the available driver assistance features, this manual provides the factory-approved procedures required to service and repair the 2009 Audi A8 (D3 Facelift).