ABS COMPUTER OUT. FROM PEOPLE I HAVE TALKED TO IT'S A FREQUENT PROBLEM IN THESE CARS. IT IS QUITE EXPENSIVE TO REPLACE. *NM
1998 Audi A4
Owner reports · Recalls · Investigations
More warning signs than most A4 years
Owner complaints for the 1998 Audi A4 are substantially higher than the model-year median of 76.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all A4 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
102 reports with mileage · 156 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 112 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Suspension. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
258 reportsTHE ABS CONTROL UNIT ON MY AUDI A4 FAILED AFTER ONLY 67,000 MILES. I HAVE NO ANTI-LOCK BRAKING WHATSOEVER, AND AUDI HAS DENIED ANY RESPONSIBILITY FOR THE PART SINCE IT IS OUT OF WARRANTY. SEARCHING THROUGH AUDI FORUMS I FOUND THIS FAILURE TO BE VERY COMMON AND EVERYONE HAD NO ABS UNTIL THE CONTROL UNIT WAS REPLACED WHICH COST …
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THE ABS CONTROL UNIT ON MY AUDI A4 FAILED AFTER ONLY 67,000 MILES. I HAVE NO ANTI-LOCK BRAKING WHATSOEVER, AND AUDI HAS DENIED ANY RESPONSIBILITY FOR THE PART SINCE IT IS OUT OF WARRANTY. SEARCHING THROUGH AUDI FORUMS I FOUND THIS FAILURE TO BE VERY COMMON AND EVERYONE HAD NO ABS UNTIL THE CONTROL UNIT WAS REPLACED WHICH COST AN AVERAGE OF $1500+. THERE WERE NO EVENTS THAT LEAD UP TO THE FAILURE, I STARTED THE CAR ONE DAY AND THE ABS AND BRAKE LIGHT STARTED FLASHING ON MY DASH. I TESTED THE ABS ON AN ICY ROAD AND FOUND THAT IT INDEED DOES NOT PREVENT MY BRAKES FROM LOCKING UP.*JB
FAILURE OF ABS MODULE, 1998 AUDI A4. *JB
MY ABS LIGHT STARTED BLINKING IN MY 1998 AUDI A4. I WENT TO A MECHANIC AND HAD IT DIAGNOSED; FOUND THAT IT WAS A LIGHT FAILURE; I WAS TOLD I WOULD HAVE TO PAY A LOT OF MONEY TO PULL OUT THE ELECTRONICS AND MOST LIKELY NOT EVEN SOLVE THE PROBLEM. LATER I STARTED TO NOTICE THAT MY ABS WAS NOT ENGAGING PROPERLY AND SOMETIMES NOT …
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MY ABS LIGHT STARTED BLINKING IN MY 1998 AUDI A4. I WENT TO A MECHANIC AND HAD IT DIAGNOSED; FOUND THAT IT WAS A LIGHT FAILURE; I WAS TOLD I WOULD HAVE TO PAY A LOT OF MONEY TO PULL OUT THE ELECTRONICS AND MOST LIKELY NOT EVEN SOLVE THE PROBLEM. LATER I STARTED TO NOTICE THAT MY ABS WAS NOT ENGAGING PROPERLY AND SOMETIMES NOT AT ALL (WHICH IS NOW THE CASE), I FILED COMPLAINTS WITH AUDI AND BOSHE ABOUT THIS BUT THEY TOLD ME THERE COULD BE NO RECALL BECAUSE ABS IS NOT A TRAFFIC CONCERN. RECENTLY I WAS DRIVING IN THE RAIN AND MAKING A 98 DEGREE TURN NOT TERRIBLY FAST; THERE WAS NO STOP SIGN, AND I ENDED UP DOING A 360 TO A STOP. I FOUND THIS NOT ONLY A SCARY EXPERIENCE, BUT ONE THAT COULD HAVE BEEN LIFE THREATENING. IT DIDN'T MAKE SENSE; IM DRIVING THE HONORABLE QUATTRO. I DECIDED TO LOOK FURTHER. I FOUND MANY PEOPLE HAVE THE SAME PROBLEM. SPECIFICALLY W/ MODELS IN 1998. IM A FAIRLY GOOD DRIVER IN FACT I DID A DEFENSIVE DRIVING CLASS AT INFINEON RACEWAY SO I WAS STILL CONFUSED HOW I LOST SO MUCH TRACTION IN SUCH A SHORT AMOUNT OF TIME. I FOUND THE PROBLEM WAS ACTUALLY PART OF THE QUATTRO ITSELF. THE ELECTRONIC BRAKING, TRACTION SYSTEMS, AND VARIOUS OTHER VEHICLE DYNAMIC SYSTEMS ARE ALL DEPENDENT ON THE ABS CONTROL MODULE. ALL THE TEST UP TO THEN SHOWED NO LINK TO ABS CONTROL UNIT; I WAS MADE TO BELIEVE THAT MY CAR JUST HAD A LIGHT FAILURE. I STARTED RESEARCHING THE CONTROL UNIT AND I FOUND THAT THERE IS ALREADY A RECALL ON THE PART BUT NOT FOR AUDI BUT FOR VOLKSWAGEN! THE CAMPAIGN ID NUMBER IS 02V031000. I TALKED TO PEOPLE WHO WERE OWNERS OF VOLKSWAGENS WHO GOT THE RECALL AND MANY OF THEM HAD ALMOST IDENTICAL PROBLEMS TO MINE. SOME EVEN SAID THE UNIT CAUGHT FIRE. SO HERE I AM TOLD I HAVE A LIGHT PROBLEM, THEN TOLD AUDI CANT DO ANYTHING FOR ME EXCEPT GET A WHOLE NEW ABS SYSTEM AT MY EXPENSE. NOW I FIND THE TRUTH IS ONE CONTROL MODULE IS RESPONSIBLE FOR THE LACK OF CONTROL IN MY CAR AS WELL AS A POSSIBLE CAR FIRE. PLEASE HELP: I AND MANY OTHERS NEED A NEW UNIT. *NM
MY ABS LIGHT STARTED BLINKING IN MY 1998 AUDI A4. I WENT TO A MECHANIC AND HAD IT DIAGNOSED; FOUND THAT IT WAS A LIGHT FAILURE; I WAS TOLD I WOULD HAVE TO PAY A LOT OF MONEY TO PULL OUT THE ELECTRONICS AND MOST LIKELY NOT EVEN SOLVE THE PROBLEM. LATER I STARTED TO NOTICE THAT MY ABS WAS NOT ENGAGING PROPERLY AND SOMETIMES NOT …
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MY ABS LIGHT STARTED BLINKING IN MY 1998 AUDI A4. I WENT TO A MECHANIC AND HAD IT DIAGNOSED; FOUND THAT IT WAS A LIGHT FAILURE; I WAS TOLD I WOULD HAVE TO PAY A LOT OF MONEY TO PULL OUT THE ELECTRONICS AND MOST LIKELY NOT EVEN SOLVE THE PROBLEM. LATER I STARTED TO NOTICE THAT MY ABS WAS NOT ENGAGING PROPERLY AND SOMETIMES NOT AT ALL (WHICH IS NOW THE CASE), I FILED COMPLAINTS WITH AUDI AND BOSHE ABOUT THIS BUT THEY TOLD ME THERE COULD BE NO RECALL BECAUSE ABS IS NOT A TRAFFIC CONCERN. RECENTLY I WAS DRIVING IN THE RAIN AND MAKING A 98 DEGREE TURN NOT TERRIBLY FAST; THERE WAS NO STOP SIGN, AND I ENDED UP DOING A 360 TO A STOP. I FOUND THIS NOT ONLY A SCARY EXPERIENCE, BUT ONE THAT COULD HAVE BEEN LIFE THREATENING. IT DIDN'T MAKE SENSE; IM DRIVING THE HONORABLE QUATTRO. I DECIDED TO LOOK FURTHER. I FOUND MANY PEOPLE HAVE THE SAME PROBLEM. SPECIFICALLY W/ MODELS IN 1998. IM A FAIRLY GOOD DRIVER IN FACT I DID A DEFENSIVE DRIVING CLASS AT INFINEON RACEWAY SO I WAS STILL CONFUSED HOW I LOST SO MUCH TRACTION IN SUCH A SHORT AMOUNT OF TIME. I FOUND THE PROBLEM WAS ACTUALLY PART OF THE QUATTRO ITSELF. THE ELECTRONIC BRAKING, TRACTION SYSTEMS, AND VARIOUS OTHER VEHICLE DYNAMIC SYSTEMS ARE ALL DEPENDENT ON THE ABS CONTROL MODULE. ALL THE TEST UP TO THEN SHOWED NO LINK TO ABS CONTROL UNIT; I WAS MADE TO BELIEVE THAT MY CAR JUST HAD A LIGHT FAILURE. I STARTED RESEARCHING THE CONTROL UNIT AND I FOUND THAT THERE IS ALREADY A RECALL ON THE PART BUT NOT FOR AUDI BUT FOR VOLKSWAGEN! THE CAMPAIGN ID NUMBER IS 02V031000. I TALKED TO PEOPLE WHO WERE OWNERS OF VOLKSWAGENS WHO GOT THE RECALL AND MANY OF THEM HAD ALMOST IDENTICAL PROBLEMS TO MINE. SOME EVEN SAID THE UNIT CAUGHT FIRE. SO HERE I AM TOLD I HAVE A LIGHT PROBLEM, THEN TOLD AUDI CANT DO ANYTHING FOR ME EXCEPT GET A WHOLE NEW ABS SYSTEM AT MY EXPENSE. NOW I FIND THE TRUTH IS ONE CONTROL MODULE IS RESPONSIBLE FOR THE LACK OF CONTROL IN MY CAR AS WELL AS A POSSIBLE CAR FIRE. PLEASE HELP: I AND MANY OTHERS NEED A NEW UNIT. *NM
1998 MANUAL AUDI A4. THE TEMPERATURE WAS 32 DEGREES F OR BELOW. THE CONDITIONS WERE STEADY SNOW AND WET/ICY/SLUSH ROADS. I EXPERIENCED COMPLETE BREAK FAILURE WHEN EXITING THE HIGHWAY TO A REST AREA. I PUMPED THE BREAKS AND REGAINED SOME BREAKING POWER TO FINALLY SLOW THE VEHICLE. I COMPLETELY MISSED THE PROPER EXITING LANE D…
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1998 MANUAL AUDI A4. THE TEMPERATURE WAS 32 DEGREES F OR BELOW. THE CONDITIONS WERE STEADY SNOW AND WET/ICY/SLUSH ROADS. I EXPERIENCED COMPLETE BREAK FAILURE WHEN EXITING THE HIGHWAY TO A REST AREA. I PUMPED THE BREAKS AND REGAINED SOME BREAKING POWER TO FINALLY SLOW THE VEHICLE. I COMPLETELY MISSED THE PROPER EXITING LANE DUE TO LACK OF BREAKING. NO INJURIES OR DAMAGE RESULTED. THIS IS NOT THE FIRST INCIDENT OF LOSS OF BREAKING POWER. *NM
I TURNED MY HEATED SEAT ON IN MY AUDI A4. I FELT IT GETTING REALLY HOT IN ONE SPOT AND SMELLED SOMETHING BURNING. I GOT OUT AND LOOKED AT MY SEAT TO FIND A HOLE BURNT IN THE SEAT. I CONTACTED AUDI THEY TOLD ME TO BRING TO THE NEAREST SERVICE CENTER. THEY TOLD ME THAT BECAUSE MY CAR IS NOT UNDER WARRANTY THERE IS NOTHING THEY CA…
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I TURNED MY HEATED SEAT ON IN MY AUDI A4. I FELT IT GETTING REALLY HOT IN ONE SPOT AND SMELLED SOMETHING BURNING. I GOT OUT AND LOOKED AT MY SEAT TO FIND A HOLE BURNT IN THE SEAT. I CONTACTED AUDI THEY TOLD ME TO BRING TO THE NEAREST SERVICE CENTER. THEY TOLD ME THAT BECAUSE MY CAR IS NOT UNDER WARRANTY THERE IS NOTHING THEY CAN DO ABOUT IT. *NM
HEATED SEAT OVERHEATS. MELTS LEATHER. *JB
ABS WARNING LIGHT INTERMITTENT. RESEARCH UNCOVERED THE FACT THAT THE ABS CONTROLLER IN THE AUDI AND VW PASSAT IS FAULTY. AUDI CUSTOMER CARE HAS REPLACED THE ABS CONTROLLER FOR OTHER CUSTOMERS. SEE THIS DISCUSSION THREAD HTTP://TECH.BENTLEYPUBLISHERS.COM/THREAD.JSPA?THREADID=3409&START=0&TSTART=0. IF THIS ARTICLE\AD (HTTP:…
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ABS WARNING LIGHT INTERMITTENT. RESEARCH UNCOVERED THE FACT THAT THE ABS CONTROLLER IN THE AUDI AND VW PASSAT IS FAULTY. AUDI CUSTOMER CARE HAS REPLACED THE ABS CONTROLLER FOR OTHER CUSTOMERS. SEE THIS DISCUSSION THREAD HTTP://TECH.BENTLEYPUBLISHERS.COM/THREAD.JSPA?THREADID=3409&START=0&TSTART=0. IF THIS ARTICLE\AD (HTTP://CGI.EBAY.COM/EBAYMOTORS/ABS-BOSCH-5-3I-ABS-CONTROLLER-REPAIR_W0QQCMDZVIEWITEMQQCATEGORYZ111105QQITEMZ4601089179QQRDZ1QQSSPAGENAMEZWDVW) IS TRUE AND THE PROBLEM IS A COLD SOLDER JOINT THEN IT IS TRULY A MANUFACTURERS DEFECT. PLEASE INVESTIGATE. *JB
AUDI A4 ABS MALFUNCTION. 1998 2.8 LITER QUATTRO. *JB
Official recalls
422V471000 · Air Bags:frontal:driver Side:inflator Module
Jul 1, 2022
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 ammonium nitrate (PSAN) propellant. Due to a manufacturing issue, the NADI inflator may absorb moisture, causing the inflator to explode or the air bag cushion to underinflate.
Consequence & remedy
Consequence: The inflator could explode during air bag deployment, resulting in metal fragments striking the driver or other occupants. An underinflated air bag may not properly protect the occupant. These scenarios increase the risk of serious injury or death.
Remedy: Dealers will replace the driver's air bag inflator with an alternative inflator of a different design, free of charge. Owner notification letters were sent September 21, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 69BT. The vehicles in this recall were mistakenly omitted from recall 20V-056. All vehicle owners have already been notified by mail and informed that the remedy is available.
99V248000 · Steering:linkages:rod:relay:connecting
Sep 13, 1999
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE TIE RODS OF THE STEERING ASSEMBLY ARE PROTECTED ON EACH SIDE BY A SEAL TO PREVENT MOISTURE AND DUST PARTICLES FROM ENTERING THE SWIVEL BEARING MECHANISM. IT IS POSSIBLE THAT SOME TIE ROD SEALS MAY NOT SEAL PROPERLY.
Consequence & remedy
Consequence: IF MOISTURE AND/OR DUST PARTICLES ENTER THE SWIVEL BEARING MECHANISM, THE SWIVEL BEARING COULD WEAR OVER TIME DIMINISHING THE STEERING CONTROL OF THE VEHICLE.
Remedy: DEALERS WILL REPLACE THE TIE RODS.
99V131001 · Service Brakes, Hydraulic:power Assist:vacuum:hoses, Lines/piping, And Fittings
May 21, 1999
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH AUTOMATIC TRANSMISSIONS. A CONTROL VALVE IN THE VACUUM HOSE CONNECTING THE BRAKE BOOSTER TO THE INTAKE MANIFOLD MAY NOT OPEN OR CLOSE FULLY AT TEMPERATURES BELOW -4 F UNDER CERTAIN DRIVING CONDITIONS.
Consequence & remedy
Consequence: THIS CONDITION COULD CAUSE INSUFFICIENT VACUUM TO BE PROVIDED TO THE BRAKE BOOSTER.
Remedy: DEALERS WILL INSTALL A VACUUM BY-PASS SYSTEM INTO VEHICLES OPERATED IN THESE STATES WHICH IS DESIGNED TO PROVIDE SUFFICIENT VACUUM FOR FULL BRAKE ASSIST UNDER ALL WEATHER CONDITIONS.
98V134000 · Engine And Engine Cooling:cooling System
Jun 22, 1998
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 & remedy
Consequence: SCREEN PIECES COULD ENTER THE INTAKE AIR FLOW SYSTEM AND PREVENT THE THROTTLE PLATE FROM RETURNING TO ITS FULL IDLE POSITION.
Remedy: DEALERS WILL INSTALL A RETAINING RING TO HOLD THE AIR SCREEN IN PLACE.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
5EA04017 · STUCK-OPEN Throttle
Opened Jun 30, 2004 · Closed Feb 10, 2005
Status: closed (inferred from source dates) · Fuel System, Gasoline:fuel Injection System
VWOA HAS RECALLED APPROXIMATELY 28,300 MY 1998-99 A6 VEHICLES IN COLD WEATHER STATES THAT EXPERIENCED THE HIGHEST RATE OF THROTTLE ICING INCIDENTS IN THE SUBJECT VEHICLES (04V-495).THE FAILURE RATE IN THE A4 AND PASSAT VEHICLES IS MUCH LOWER THAN IN THE RECALLED VEHICLES.ODI WILL CONTINUE TO MONITOR THE EXPERIENCE IN THE A4 AND PASSAT VEHICLES.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS FOR THE AUDI A4 OR VW PASSAT VEHICLES.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY A CHANGE IN CIRCUMSTANCES. FOR FURTHER DETAILS SEE THE ATTACHED CLOSING REPORT.
PE02008 · Brake And Clutch Pedal Bracket
Opened Jan 23, 2002 · Closed Jul 12, 2002
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
No summary supplied.
EA00021 · Degraded Braking In Wet Weather
Opened Aug 11, 2000 · Closed Mar 29, 2002
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available
PE00016 · Degraded Braking Wet Weather Condition
Opened Apr 4, 2000 · Closed Aug 11, 2000
Status: closed (inferred from source dates) · Electrical System
There is no summary currently available
RQ99008 · Power Brake Booster Vacuum BY-PASS
Opened Jun 1, 1999 · Closed Nov 14, 2000
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available
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