2005 Audi A8 Quattro 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
- L Plus Sedan 4-Door
- Base Sedan 4-Door
- L Sedan 4-Door
- Plus Sedan 4-Door
Engines covered
- 4.2L 4172CC V8 GAS DOHC Naturally Aspirated
- 6.0L 5998CC 366Cu. In. W12 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
ON CERTAIN PASSENGER VEHICLES, DURING PRODUCTION OF THE DRIVER'S FRONTAL AIR BAG, THE AIR BAG MAY NOT UNFOLD PROPERLY IN THE EVENT OF A CRASH AND THEREFORE MAY NOT INFLATE AS DESIGNED.
LOSS OF FRONTAL AIR BAG DEPLOYMENT COULD OCCUR WHICH CAN INCREASE THE RISK OF INJURY IN A FRONTAL CRASH.
DEALERS WILL INSTALL A NEW DRIVER'S FRONTAL AIR BAG FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 6, 2006. OWNERS MAY CONTACT AUDI AT 1-800-822-2834.
This bulletin provides information on the additional reporting requirements for safety related inquiries.
This Technical Service Bulletin (TSB) details the general process for carrying out a Software Version Management (SVM) software update for any TSB or Update.
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.
The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.
Due to fuel intrusion into the low-pressure system fuel pressure sensor (G410), a false signal may be sent to the controller, resulting in a reading that is out of tolerance.
Vehicle lacks power or will not move after stop due to simultaneous depressing of the brake and accelerator pedals
ATF pan leaks
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 202 technical service bulletins on file with NHTSA.
OWNER WAS DRIVING THE AUDI HOME WHEN HE SMELLED SOMETHING BURNING. HE PULLED OVER AND OBSERVED A FIRE IN THE ENGINE COMPARTMENT. FIRE BURNED WITH GREATEST INTENSITY IN LOWER LEFT REAR OF ENGINE COMPARTMENT, FROM LOCATION OF LEFT SIDE CATALYTIC CONVERTER. SPARK PLUGS REMOVED FROM ENGINE SHOWED OVERFUELING PROBLEM IN #6 AND #8 CYLINDERS ON LEFT BANK, CAUSING CATALYTIC CONVERTER TO OVERHEAT AND START THE FIRE. *NM
ADAPTIVE MODULE J428 FAILED AND BRAKES SEIZED WHILE VEHICLE WAS IN MOTION.. AUDI CUSTOMER SERVICE SAID THAT SINCE THEY COULD NOT FIND A RECALL AND THE VEHICLE WAS NINE YEARS OLD THEY THOUGHT IT WAS NOT THEIR PROBLEM. I THINK THE PROBLEM COULD HAVE E RESULTED IN A SERIOUS ACCIDENT AT HIGH SPEEDS AND COULD HAVE KILLED ME. I PAID FOR THE REPAIR BUT TOLD THEM THEY SHOULD CHECK INTO THE PROBLEM BECAUSE OF THE SAFETY ISSUE BUT DID NOT RECEIVE A POSITIVE RESPONSE. I FEEL THE PROBLEM SHOULD BE RESEARCHED AND I WOULD LIKE FEED BACK ON ANY INFORMATION THAT WOULD RESULT FROM THE RESEARCH. *TR
MY 2005 AUDI A8L CONTAINS A DEFECT WHICH ALLOWS THE DRIVER'S FLOOR MAT TO POP OFF IT'S RESTRAINING/LOCATING PEGS ENABLING THE MAT TO MOVE FORWARD AND PUSH AND HOLD THE ACCELERATOR PEDAL DOWN, RESULTING RUNAWAY ACCELERATION, THIS SEEMS TO BE A PROBLEM SIMILAR TO WHAT TOYOTA OWNERS HAVE EXPERIENCED AND FOR WHICH TOYOTA HAS INSTITUTED A LARGE RECALL. THIS SITUATION HAS OCCURRED AT LEAST SEVEN TIMES TO THREE SEPARATE DRIVERS OVER THE PAST TWO YEARS. AT THE FIRST OCCURRENCE TO EACH ME AND MY WIFE, WE WERE ABLE TO CONTROL THE ACCELERATION WITH THE BRAKE TO BUY SUFFICIENT TIME TO GATHER OUR WITS
TL*THE CONTACT OWNS A 2005 AUDI A8. WHILE DRIVING 70 MPH WITH THE CRUISE CONTROL ACTIVATED THE CONTACT HEARD A BELL SOUND AND THE CRUISE CONTROL FAILED. THE VEHICLE DECELERATED, BUT DID NOT SHUT OFF. THE VEHICLE WAS TAKEN TO A DEALER APPROXIMATELY TEN TIMES, BUT THE CAUSE OF FAILURE COULD NOT BE DETERMINED. THE DEALER STATED THAT THE FAILURE WAS A NORMAL CHARACTERISTIC OF THE VEHICLE. THE VEHICLE HAS NOT BEEN REPAIRED. THE CURRENT MILEAGE WAS 23,800, AND FAILURE MILEAGE WAS 10,000. *AK UPDATE 05/04/07*TR
DT*: THE CONTACT STATED WHILE DRIVING 10 MPH AND PREPARING TO STOP AT A TRAFFIC LIGHT, THE STEERING WHEEL LOCKED, THE EMERGENCY BRAKE ENGAGED AND THE WARNING LIGHTS ON THE DASH ILLUMINATED. THE VEHICLE WAS UNABLE TO BE MANEUVERED OFF THE ROAD AND WAS TOWED TO THE DEALER, WHO DETERMINED THE ENTIRE COMPUTER SYSTEM FAILED. THE FAILURE WAS DUE TO LIQUID WHICH SPILLED IN THE BACK SEAT, RAN DOWN INTO THE SEAT, AND CAME INTO CONTACT WITH THE TIRE PRESSURE MONITORING CONTROL MODULE. THE DEALER REPLACED THE TIRE PRESSURE MONITORING CONTROL MODULE, STEERING WHEEL AND LOCK. UPDATED 10/25/2006 - *N
DT*: THE CONTACT STATED WHILE THE VEHICLE WAS TRAVELING 40 MPH THE ACCELERATOR PEDAL WAS RELEASED. THE VEHICLE ACCELERATED ON ITS OWN. THE BRAKE PEDAL WAS DEPRESSED AND THE VEHICLE STOPPED. THE DEALERSHIP WAS UNABLE TO DETERMINE A PROBLEM. A SECOND TIME, WHILE DRIVING 70 MPH, THE ACCELERATOR PEDAL WAS RELEASED AND THE VEHICLE ACCELERATED TO 100 MPH. THE BRAKE PEDAL WAS APPLIED AND THE VEHICLE SLOWED TO 70 MPH THEN THE VEHICLE SPED UP AGAIN. THE CONTACT USED THE PARKING BRAKE TO SLOW THE VEHICLE TO 45 MPH, AND THEN APPLIED BOTH FEET TO THE BRAKE PEDAL TO STOP THE VEHICLE. ONCE AT A STOP
