2015 Audi S8 Service and Repair Manual

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Factory-Grade Data

2015 Audi S8 service and repair manual a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What's included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Base Sedan 4-Door

Engines covered

  • 4.0L 3993CC 243Cu. In. V8 GAS DOHC Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2015 Audi S8 Recalls & Complaints

NHTSA #22V17800023/03/2022Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the

Consequence

Worn bearings can cause the turbine wheel to contact the turbocharger housing or cause the shaft to

Remedy

Dealers will replace the oil strainer and perform an oil change, free of charge. Owner notification

NHTSA #20V39700007/07/2020Component: STRUCTURE:BODY:HOOD

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S8 and A8 vehicles. The seal around the engine compartment may come loose and contact hot engine components.

Consequence

If the seal contacts hot engine components, there could be an increased risk of a fire.

Remedy

Audi will notify owners, and dealers will install a retaining plate to prevent the engine compartme

TSB #11032165

This bulletin provides informaiotn when the starter battery is discharged or defective.

TSB #11032137

This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool

TSB #11032131

This bulletin provides diagnostic information for the vehicle locking system.

TSB #11031064

This Reporting obligation requests that technicians contact the Technical Assistance Center (TAC) when the diagnostic tester refers to this reportin gobligation or to TPI 2033392.

TSB #11031051

This bulletin provides informaiotn about various infortainment system complaints.

TSB #11030987

This bulletin provides information about where to download the Audi frequency app.

TSB #11030985

This bulletin provides information when the parking assistance gives false warnings.

TSB #11030984

This bulletin provides information when the parking assistance gives false warnings.

Showing the 8 most recent of 658 technical service bulletins on file with NHTSA.

20240320Component: POWER TRAIN

Water Pump and thermostat has a faulty design that causes coolant to leak either around the O Ring and/or the elbow. I am in my third water pump and thermostat with only 69,000 miles on the vehicle.

20230210Component: ENGINE

The contact owns a 2015 Audi S8. The contact stated he was unable to start the vehicle. The contact stated that the Electronic Power Control (EPC) warning light was illuminated. The contact was able t

20220218Component: ENGINE

Turbo failure and positive crankcase ventilation (PCV) failure. Whining noise from PCV and smoke out the tail pipes with no power. Had to pay out of pocket to remedy issues.

20210305Component: ENGINE

WAS DRIVING ON A SATURDAY AFTERNOON DOWN A BUSY STREET WHEN MY CAR STARTED SPUTTERING AND HAD VERY REDUCED POWER. I WAS ABLE TO EVENTUALLY GET TO THE SIDE OF THE ROAD AND SHUT THE CAR OFF. TRIED START

20190602Component: ENGINE

ONLY 43,750 MILES AND THE ENGINE IS BEING COMPLETELY REBUILT. NEW CAM ADJUSTERS, NEW TIMING CHAIN TENSIONERS, NEW TIMING CHAIN GUIDES... THIS SHOULDN'T HAPPEN ON A CAR WITH SUCH FEW MILES.

Showing the 5 most serious of 6 complaints filed with NHTSA.

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