2020 Audi RSQ8 Service and Repair Manual

This 2020 Audi RS Q8 Service and Repair Manual Covers

Engine & Drivetrain

• 4.0L Twin-Turbocharged V8 TFSI (EA825)
• 48-Volt Mild Hybrid (MHEV) system
• Engine management system diagnostics
• Fuel injection and ignition system servicing
• Turbocharger inspection and repair
• Cooling and lubrication system maintenance
• Exhaust and emissions control system servicing
• 8-Speed Tiptronic automatic transmission diagnostics and repair
• quattro permanent all-wheel drive system
• Center differential, driveshaft, and axle servicing

Chassis & Suspension

• RS Adaptive Air Suspension diagnostics
• Active Roll Stabilization (eAWS)
• Dynamic all-wheel steering diagnostics
• Electronic damping control
• Steering system repair procedures
• Wheel alignment specifications
• Suspension component inspection and replacement
• Wheel bearing servicing

Braking Systems

• RS high-performance braking system
• ABS diagnostics
• Electronic Stability Control (ESC)
• Electronic Brakeforce Distribution (EBD)
• Brake Assist system diagnostics
• Electronic Parking Brake (EPB)
• Carbon ceramic brake servicing (where equipped)
• Brake hydraulic system maintenance

Electrical & Wiring

• Complete factory wiring diagrams
• CAN Bus, FlexRay, and Automotive Ethernet diagnostics
• 48-Volt electrical system servicing
• Battery Energy Management (BEM)
• Charging and starting system diagnostics
• Body Control Module (BCM)
• Power distribution, fuse, and relay assignments
• Audi Virtual Cockpit diagnostics
• MMI Navigation Plus with MMI Touch Response diagnostics
• Interior and exterior lighting system diagnostics

Advanced Driver Assistance Systems (ADAS)

• Adaptive Cruise Assist
• Lane Departure Warning
• Lane Keeping Assist
• Audi Pre Sense Front
• Audi Pre Sense Rear
• Blind Spot Monitoring
• Rear Cross Traffic Assist
• Traffic Sign Recognition
• Top View Camera System
• Park Assist and parking sensors
• Radar and front camera calibration procedures

Air Conditioning & HVAC

• Automatic climate control diagnostics
• HVAC control module servicing
• Refrigerant recovery and recharge procedures
• Heating, ventilation, and air distribution system repairs

Body & Interior

• Power tailgate diagnostics
• Advanced key (keyless entry and start) diagnostics
• Power seat adjustment systems
• Door locking and window control diagnostics
• Interior trim removal and installation
• Exterior body repair procedures
• Airbag (SRS) system diagnostics

Diagnostics & Troubleshooting

• Audi ODIS diagnostic procedures
• Guided Fault Finding (GFF)
• Diagnostic Trouble Code (DTC) troubleshooting
• Control module coding and adaptations
• Component testing procedures
• System calibration following repairs

Common Error Codes Covered

This manual provides diagnostic and repair procedures for common Audi manufacturer-specific fault codes, including:

Engine Codes

• P0016 – Crankshaft/Camshaft Correlation
• P0299 – Turbocharger Underboost
• P0300 – Random/Multiple Cylinder Misfire
• P0507 – Idle Speed Higher Than Expected
• P2187 – System Too Lean at Idle

Transmission Codes

• P0726 – Engine Speed Input Circuit Performance
• P17BF – Automatic Transmission Control Malfunction
• P1740 – Torque Converter Clutch Performance

ABS & Chassis Codes

• C10AC – Ride Height Sensor Malfunction
• C110B – Air Suspension Compressor Fault
• C1046 – Steering Angle Sensor Calibration Required

Network Communication Codes

• U0100 – Lost Communication With ECM/PCM
• U1113 – Function Restriction Due to Communication Fault
• U1121 – Missing Message on Data Bus

Driver Assistance System Codes

• C110300 – Radar Sensor Misalignment
• B200FF0 – Front Camera Calibration Required
• U023500 – Lost Communication With Cruise Control Module

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

Who Is This Manual For?

• Audi dealership technicians
• Independent European vehicle repair workshops
• Performance tuning specialists
• Automotive technicians
• Fleet maintenance professionals
• Experienced DIY mechanics

If you are servicing, maintaining, diagnosing, or repairing your 2020 Audi RS Q8, this factory workshop manual provides the complete procedures and technical information required to perform repairs to Audi factory standards.