1998 Audi A8 Service and Repair Manual

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Factory-Grade Data

1998 Audi A8 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

  • 3.7L 3697CC V8 GAS DOHC Naturally Aspirated

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

1998 Audi A8 Recalls & Complaints

NHTSA #08V39700014/08/2008Component: POWER TRAIN:AUTOMATIC TRANSMISSION

VOLKSWAGEN IS RECALLING 13,900 MY 1996-2003 AUDI A8 VEHICLES EQUIPPED WITH A 5-SPEED AUTOMATIC TRANSMISSION. THE LOCKING CABLE MAY MOVE OUT OF POSITION OVER TIME. WITH THE LOCKING CABLE OUT OF POSIT

Consequence

THIS COULD ALLOW THE VEHICLE TO ROLL, CAUSING A CRASH WITHOUT WARNING.

Remedy

DEALERS WILL MODIFY THE AUTOMATIC TRANSMISSION LOCKING CABLE BY INSTALLING AN ADJUSTING PIECE THAT W

NHTSA #22V47100001/07/2022Component: AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

Volkswagen Group of America, Inc. (Audi) is recalling certain 1998 Audi A8 and 1997-1998 Audi A4 vehicles equipped with Non-Azide Driver air bag Inflators (NADI) that do not contain phase stabilized a

Consequence

The inflator could explode during air bag deployment, resulting in metal fragments striking the driv

Remedy

Dealers will replace the driver's air bag inflator with an alternative inflator of a different desig

TSB #10216638

If the vehicle?s engine experienced a serious mechanical problem, it is possible that small pieces of metal debris resulting from the mechanical problem may have become deposited in the intake manifold, air intake hoses, exhaust manifolds,

TSB #10216656

Discontinuation and mixing of Audi-approved engine coolants.

TSB #10216662

Discontinuation and mixing of Audi-approved engine coolants.

TSB #10216682

Engine oils that meet Audi Oil Quality Standards.

TSB #10164518

This communication is issued to inform dealers of updated shipping regulations related to lithium ion batteries.

TSB #10163501

This communication is issued to remind dealers of the repair validation process for repair group 19. 2005-2019 A3, 1996-2019 A4, 2008-2019 A5, 1992-2019 A6, 2012-2019 A7, 1997-2019 A8, 2019 E-Tron, 2015-2019 Q3, 2010-2019 Q5, 2007-2019 Q7,

TSB #10155644

This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward.

TSB #10128399

Supersedes Technical Service Bulletin Group 19 number 14-50 dated June 20, 2014. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service

Showing the 8 most recent of 56 technical service bulletins on file with NHTSA.

20000922Component: AIR BAGSCrash reported1 injured

SINGLE OCCUPANT IN VEHICLE (DRIVER) VEHICLE WAS FORCED OFF THE ROAD AND ENTERED A DITCH ABOUT THREE-FOUR FEET DEEP. PASSENGER'S AIR BAG, FRONT, FIRED. THE AUDI A8 CLEARLY STATES IN THE SALES LITERATUR

20061109Component: EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT

TIRE JACK SUPPLIED BY AUDI USA FOR THE AUDI A8 IS VERY DANGEROUS. IT IS MANUFACTURED OUT OF CHEAP ALUMINUM AND IS NOT RUGGED ENOUGH TO LIFT THE CAR EVEN ON FLAT PAVEMENT. THE JACK BENT UNDER THE WEI

20030128Component: AIR BAGS

AIRBAG WARNING LIGHT INDICATES AIRBAG FAILURE. AUDI DEALER CANNOT RECTIFY.

19990728Component: VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

BLIND SPOTS, REAR VISIBILITY: AUDI'S REFUSAL TO REPLACE OUTSIDE MIRRORS. THE PASSENGER'S OUTSIDE MIRROR AN DRIVERS POORLY DESIGNED AND HAVE TREMENDOUS BLIND SPOTS. DRIVING A $70K WITH MIRROR ASSEMBLIE

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