2004 Audi A4 Service and Repair Manual

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Factory-Grade Data

2004 Audi A4 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

  • Cabriolet Convertible 2-Door
  • S Line Sedan 4-Door
  • Base Sedan 4-Door
  • Confort Sedan 4-Door
  • Vangard Sedan 4-Door
  • Avant Wagon 4-Door
  • Cabrio Convertible 2-Door
  • Luxury Sedan 4-Door

Engines covered

  • 1.8L 1781CC l4 GAS DOHC Turbocharged
  • 3.0L 2976CC 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

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Vehicle Safety Data

2004 Audi A4 Recalls & Complaints

NHTSA #05V09600015/03/2005Component: EXTERIOR LIGHTING:HEADLIGHTS

ON CERTAIN PASSENGER VEHICLES, THERE IS A POSSIBILITY OF XENON HEADLAMP COATING DEGRADATION OVER TIME. THE LUMINOUS TRANSMITTANCE OF THE HEADLAMP MAY DECREASE OVER A PERIOD OF TIME.

Consequence

THIS CONDITION COULD AFFECT A DRIVER'S FIELD OF VIEW, INCREASING THE RISK OF A CRASH.

Remedy

DEALERS WILL REPLACE THE LEFT AND RIGHT XENON HEADLAMP REFLECTORS FREE OF CHARGE. THE RECALL BEGAN

NHTSA #16V38200001/06/2016Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2004-2008 Audi A4, and 2005-2011 Audi A6 vehicles originally sold, or ever registered, in Alabama, California, Florida, G

Consequence

An inflator rupture may result in metal fragments striking the vehicle occupants resulting in seriou

Remedy

Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of ch

TSB #10243930

This bulletin provides information on the additional reporting requirements for safety related inquiries.

TSB #10228314

The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.

TSB #10228297

This Technical Service Bulletin (TSB) details the general process for carrying out a Software Version Management (SVM) software update for any TSB or Update.

TSB #10228302

High quality media files (video and sound) are now integrated into technical service bulletins on a case-by-case basis. Media files can now be viewed on any smartphone or tablet.

TSB #10226529

Vehicle lacks power or will not move after stop due to simultaneous depressing of the brake and accelerator pedals

TSB #10226530

ATF pan leaks

TSB #10224976

This Technical Service Bulletin (TSB) details the general process for carrying out a Software Version Management (SVM) software update for any TSB or Update.

TSB #10224981

High quality media files (video and sound) are now integrated into technical service bulletins on a case-by-case basis. Media files can now be viewed on any smartphone or tablet.

Showing the 8 most recent of 172 technical service bulletins on file with NHTSA.

20101226Component: FUEL SYSTEM, GASOLINECrash reportedFire reported

I WAS DRIVING HWY SPEED LIMIT WHILE MY AUDI A4 3.0 2004 STOPPED RUNNING ALL OF A SUDDEN AND I HAD TO PUSH MY CAR ON THE SIDE TO SAFE FROM HWY TRAFFIC. I TRIED TO RESTATE THE ENGINE BUT I COULDN'T STAR

20080919Component: AIR BAGS:FRONTALCrash reported2 injured

TL*THE CONTACTS OWNS A 2004 AUDI A4. THE CONTACT STATED THAT THE VEHICLE WAS REAR ENDED; HOWEVER, HE WAS NOT PRESENT AT THE TIME OF THE CRASH. AT THE TIME, THE FRONT PASSENGER SIDE AIR BAG DEPLOYED,

20090727Component: AIR BAGS:FRONTALCrash reported1 injured

I WAS IN A HEAD ON COLLISION PRIMARILY ON THE DRIVERS SIDE AND THE PASSENGER SIDE AIR BAG DEPLOYED AND THE DRIVERS SIDE DID NO. *TR

20071005Component: AIR BAGSCrash reported1 injured

TL*THE CONTACT'S FATHER OWNS A 2004 AUDI A4. WHILE DRIVING 15 MPH, ANOTHER VEHICLE CRASHED INTO THE DRIVER SIDE REAR DOOR OF THE VEHICLE. FURTHERMORE, THERE WAS A SUDDEN ACCELERATION THAT CAUSED THE

20071005Component: VEHICLE SPEED CONTROLCrash reported1 injured

TL*THE CONTACT'S FATHER OWNS A 2004 AUDI A4. WHILE DRIVING 15 MPH, ANOTHER VEHICLE CRASHED INTO THE DRIVER SIDE REAR DOOR OF THE VEHICLE. FURTHERMORE, THERE WAS A SUDDEN ACCELERATION THAT CAUSED THE

Showing the 5 most serious of 225 complaints filed with NHTSA.

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