There are 4 owner-reported electrical system complaints for the 2004 Audi A8in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
DRIVER SMELLED SMOKE SHORTLY AFTER STARTING HIS VEHICLE AND DRIVING AWAY FROM HIS HOME. THE SMELL WAS OF PLASTIC, AND IT WAS ASSUMED FROM AN ELECTRICAL SHORT/FIRE. THE DRIVER STOPPED THE CAR AND INSPECTED THE ENGINE AREA. NO EVIDENCE OF FIRE, HOWEVER THE DRIVER TURNED BACK AND DROVE THE VEHICLE HOME. STRONG BURNING PLASTIC SMELL AGAIN AS THE VEHICLE WAS STOPPED. THE CABIN WAS FILLING WITH SMOKE. DRIVER OPENED THE TRUNK AS THE BATTERY WAS LOCATED IN THE RIGHT REAR SECTION OF THE TRUNK. SMOKE WAS EMANATING FROM THE BATTERY COMPARTMENT. A PLASTIC PANEL WAS REMOVED FOR INSPECTION. LOCATED DIRECTLY UNDER THE BATTERY WAS A PLASTIC MODULE IDENTIFIED AS TRW *334 GNOACDOBNC28U* AND STAMPED MADE IN MALAYSIA??. THE DEALER STATED THAT THE MODULE CONTROLS THE ELECTRIC PARKING BRAKE FOR THE CAR. INSPECTING THE UNIT, MULTIPLE WIRE LEADS THAT FEED THE E-BRAKE CONTROL UNIT HAD BURNED THROUGH, AS DID A PORTION OF THE E-BRAKE CONTROL UNIT. THE BODY AREA OF THE CAR NEAR THE UNIT WAS COVERED IN SOOT FROM THE ELECTRICAL FIRE. YEARS PRIOR, THE DRIVER HAD ISSUES WITH THE E-BRAKE, THE E-BRAKES FAILING TO RELEASE PROMPTING THE VEHICLE TO BE TOWED TO THE DEALER. AT THAT TIME THE SERVICE REPRESENTATIVE WALKED THE DRIVER INTO THE SERVICE AREA TO SHOW THE DRIVER CORROSION ON THE ELECTRIC CONTACT LEADS FROM THE CONTROL UNIT. THE REPRESENTATIVE SUGGESTED THAT PERHAPS BATTERY ACID/GASES MAY HAVE RUN DOWN THE BATTERY INTO THE CONTROL UNIT CAUSING THE CORROSION. THE UNIT MAY HAVE BEEN REPLACED AT THAT TIME ALONG WITH THE BATTERY. PHOTOS ARE AVAILABLE OF THE CONTROL UNIT UPON REQUEST. *TR
DT: THE CONTACT STATED A GALLON OF MILK SPILLED INTO THE DRIVER'S SEAT. THE MILK SPILLED UNDERNEATH THE SEAT. WHEN THIS HAPPENED IT SHORTED OUT THE ELECTRICAL MODULE THAT OPERATED THE DASHBOARD LIGHTS AND HEADLIGHTS. AS A RESULT THE LIGHTS WERE BLINKING IN AND OUT. CURRENTLY, THE VEHICLE IS AT A CERTIFIED DEALERSHIP FOR REPAIRS.*AK UPDATED 12/27/2005 - THE TIRE PRESSURE MONITORING LIGHT ILLUMINATED ON THE DASH. THE DEALER REPLACED THE MODULE. THE TRUNK WOULD NOT CLOSE PROPERLY. *NM
MY AUDI A8 2004 MODEL [XXX] COP DEVICE BURNED WITH A WIRE FIRE ON DEC 28, 2OO4 - I COULD ONLY STOP A FURTHER FIRE BY USING A FIRE EXT. AND DISCONNECTING THE BATTERY. I WAS TOLD BY THE AUDI SHOP DCH MAPLEWOOD N.J. AND MY REGULAR REPAIR SHOP LANGAN MOTORS, SCHENECTADY. N.Y. THAT THEY HAVE NEVER HAD SEEN SUCH A PROBLEM. *AK UPDATED 07/24/2012 *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
MMI SYSTEM HAS INTERMITTENT RESETS AND CAUSE ERRATIC PERFORMANCE OF OTHER SYSTEMS SUCH A WINDOWS, TRUNK, AUDIO, NAVIGATION.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026