1999 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Acura SLX has 2 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues with published estimates, repair costs range from $300 to $2,000. DIY maintenance guides at au7o.io.
SUSPENSION
THESE VEHICLES WERE MANUFACTURED WITHOUT A LOCK WASHER AND/OR SCREWS IN THE FRONT HUB.
POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. THE TRANSFER GEARBOX FLANGE NUTS WERE NOT PROPERLY INSTALLED, CAUSING THE NUTS TO LOOSEN.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
THE LEFT FRONT BRAKE LINES WERE INSTALLED IMPROPERLY AT THE ASSEMBLY LINE RESULTING IN INSUFFICIENT CLEARANCE BETWEEN THE BRAKE LINE AND AN UPPER CONTROL ARM OF THE SUSPENSION.
SEAT BELTS:REAR/OTHER
CERTAIN VEHICLES WERE MANUFACTURED WITH AN INCORRECT REAR CENTER SEAT BELT ASSEMBLY BUCKLE. THE MISBUILD INVOLVED FITTING A BUCKLE FOR ANOTHER MARKET WITH THE CORRECT U.S. SPECIFICATION SEAT BELT.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Acura SLX has 2 documented issues. The most frequently reported are: Consumer Reports rated the 1996 SLX 'Not Acceptable' for rollover risk in low-speed turns, Rear differential whine + transfer case (BW4422) failures inherited from Isuzu Trooper platform. None are rated critical, but regular maintenance is recommended.
The 1999 Acura SLX has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Acura SLX issues range from $0 to $2,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
In August 1996 Consumer Reports published rollover test results showing the 1996 Acura SLX (a rebadged Isuzu Trooper) tipped onto two wheels during avoidance-maneuver testing at low speeds. Consumer Reports issued the rare 'Not Acceptable' rating and publicly demanded Isuzu and A… Repairs typically run $0-$0. Severity: medium.
The SLX is a rebadged Isuzu Trooper, and inherits the same drivetrain failures that plague the Trooper. The rear differential develops a high-pitched whine, primarily under load at highway speed, caused by ring-and-pinion wear from imperfect gear mesh. Once the whine starts it pr… Repairs typically run $300-$2,000. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
