1998 Audi A6 Service and Repair Manual

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Fits the 1998 A6 — Base Sedan 4-Door ·
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1998 Audi A6 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

  • 2.8L 2771CC V6 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
NHTSA #20V05600031/01/2020Component: AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE

Volkswagen Group of America, Inc. (VW) is recalling certain 2000-2001 TT Roadster, 2000 TT Coupe, 1999 Audi A8, 1998-2000 Audi A6, and 1999-2000 Audi A4 vehicles equipped with Non-Azide Driver air bag

Consequence

In the event of a crash necessitating air bag deployment, the air bag may not properly protect the o

Remedy

Dealers will replace the driver frontal air bag inflator with an alternative inflator when the parts

NHTSA #98V13400022/06/1998Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

VEHICLE DESCRIPTION: PASSENGER VEHICLES. IF THE ENGINE BACKFIRES DURING A COLD-START, AN AIR SCREEN WHICH IS LOOSELY SEATED IN THE AIR FLOW METER CAN BECOME DAMAGED.

Consequence

SCREEN PIECES COULD ENTER THE INTAKE AIR FLOW SYSTEM AND PREVENT THE THROTTLE PLATE FROM RETURNING T

Remedy

DEALERS WILL INSTALL A RETAINING RING TO HOLD THE AIR SCREEN IN PLACE.

NHTSA #04V13300018/03/2004Component: ELECTRICAL SYSTEM

ON CERTAIN PASSENGER VEHICLES, IF A DRIVER'S KNEES PUSH AGAINST THE KNEE BOLSTER (CRASH ELEMENT) LOCATED UNDER THE DASHBOARD, IT CAN CONTACT THE HEADLIGHT SWITCH WIRING HARNESS, AND AN ELECTRICAL SHOR

Consequence

A FIRE COULD ORIGINATE IN THE LEFT DASHBOARD AREA.

Remedy

DEALERS WILL INSTALL A PROTECTIVE COVERING ON THE KNEE BOLSTER (CRASH ELEMENT). IN ADDITION, THE WI

NHTSA #04V49500012/10/2004Component: VEHICLE SPEED CONTROL

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 2.8L, V6 5-VALVE ENGINES, AND AUTOMATIC TRANSMISSIONS, WHILE DRIVING DURING EXTREMELY LOW AMBIENT TEMPERATURES THE THROTTLE MAY FREEZE IN AN OPEN POSITION D

Consequence

IF THIS OCCURS, THE VEHICLE MAY FAIL TO REDUCE SPEED WHEN THE DRIVER LIFTS HIS/HER FOOT FROM THE GAS

Remedy

AUDI WILL INSTALL A REPLACEMENT THROTTLE BODY KIT FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 29, 2

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 #10058584

AUDI: ENGINE, ON SOME VEHICLES, WOULD RUN IRREGULARLY OR HAVE MALFUNCTION INDICATOR LAMP (MIL) ON OR POSSIBLE FILTER ELEMENT FOR CAMSHAFT ADJUSTMENT VALVE CAN LOOSEN AND IN OIL CIRCUIT, THERE IS NO DAMAGE FROM LOOSENED PARTICLES. MODEL ALL.

TSB #10250950

Tightening wheel bolts

TSB #10251027

Tightening wheel bolts

TSB #10249085

Google Maps Street View (NVLW))

Showing the 8 most recent of 66 technical service bulletins on file with NHTSA.

20000412Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINECrash reported2 injured

AUDI COULD NOT FIX MULTIPLE PROBLEMS. TOLD ME TO SELL IT. NO SAFETY DEFECT LISTED WITHIN SUMMARY. *AK

20000412Component: ELECTRICAL SYSTEM:12V/24V/48V BATTERYCrash reported2 injured

AUDI COULD NOT FIX MULTIPLE PROBLEMS. TOLD ME TO SELL IT. NO SAFETY DEFECT LISTED WITHIN SUMMARY. *AK

20000412Component: VISIBILITY:SUN/MOON ROOF ASSEMBLYCrash reported2 injured

AUDI COULD NOT FIX MULTIPLE PROBLEMS. TOLD ME TO SELL IT. NO SAFETY DEFECT LISTED WITHIN SUMMARY. *AK

20000412Component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEMCrash reported2 injured

AUDI COULD NOT FIX MULTIPLE PROBLEMS. TOLD ME TO SELL IT. NO SAFETY DEFECT LISTED WITHIN SUMMARY. *AK

20000412Component: SEAT BELTS:FRONT:ANCHORAGECrash reported2 injured

AUDI COULD NOT FIX MULTIPLE PROBLEMS. TOLD ME TO SELL IT. NO SAFETY DEFECT LISTED WITHIN SUMMARY. *AK

Showing the 5 most serious of 158 complaints filed with NHTSA.

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