1998 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026
1998 · All trims · All engines
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1998 Toyota 4Runner has 10 documented known issues, with 2 rated critical. The most serious are Front Lower Ball Joint Wear and Separation (3rd Gen) ($400-$950 repair) and Rocker Panel, Rear Wheel-Arch and Pinch-Weld Rust ($600-$3,500 repair). Across all issues with published estimates, repair costs range from $15 to $3,500. DIY maintenance guides at au7o.io.
SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER
Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2010-2011 Prius and Corolla, 2009-2011 Venza, 2006-2010 Avalon, 2007-2010 FJ Cruiser, 2005-2011 Sienna and Sequoia, 2006-2011 Tacoma 4x2 and 4x4, Camry, Highlander, Tundra 4x2 and 4x4, and 2007-2011 Rav4 and 4Runner. The affected vehicles may experience compression of the seat cushion which may damage the seat heater wiring.
SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER
Southeast Toyota Distributors, LLC (SET) is recalling certain 2005-2011 4Runner, Highlander, Sequoia, and Sienna, 2005-2010 Avalon and Tundra, 2006-2008 Camry Solara, 2006-2010 Highlander hybrid, 2006-2011 Rav4 and Tacoma, 2007-2010 FJ Cruiser, 2007-2011 Camry hybrid, 2009-2010 Venza, 2010-2012 Prius, 1988-1990 and 2005-2010 Camry, and 1989 and 2009-2010 Corolla vehicles equipped with aftermarket accessory seat heaters with a copper strand heating element. The electrical wiring in the seat heaters may be damaged when the seat cushion is compressed.
AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE
Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, and RAV4; model year 2009-2010 Avalon, FJ Cruiser, and Highlander Hybrid; model year 2010-2013 model year Corolla, Sienna and Tundra; model year 2009-2013 Highlander and Venza; model year 2012 Prius V; and model year 2010-2012 Sequoia. During modification by SET to include accessories such as leather seat covers, seat heaters or headrest DVD systems, these vehicles may not have had the passenger seat occupant sensing system calibration tested. Without passing the calibration test, the occupant sensing system may not operate as designed.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1998 Toyota 4Runner has 10 documented issues. The most frequently reported are: Front Lower Ball Joint Wear and Separation (3rd Gen), Rocker Panel, Rear Wheel-Arch and Pinch-Weld Rust, Power Steering Pump / System Leak & Whine — Reservoir Screen Clog and Seal Failure. Of these, 2 are rated critical and should be addressed promptly.
The 1998 Toyota 4Runner has 10 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Front Lower Ball Joint Wear and Separation (3rd Gen) and Rocker Panel, Rear Wheel-Arch and Pinch-Weld Rust. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Toyota 4Runner issues range from $15 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Front Lower Ball Joint Wear and Separation (3rd Gen), typically costs $400-$950 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The front lower ball joints on 3rd-generation 4Runners (1996-1999, sharing the same part through 2002) wear out and, in worst cases, separate from the steering knuckle, causing loss of steering control and front-corner collapse. Toyota issued a formal safety recall/Special Servic… Repairs typically run $400-$950. Severity: high.
1990s 4Runners are structurally durable but very prone to age- and salt-driven body rust, especially at the rocker panels, lower quarter/rear wheel arches, and the pinch-weld seams. On 3rd-gen trucks (1996-1999) the factory sunroof drain lines route into the rocker cavities, and… Repairs typically run $600-$3,500. Severity: high.
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.
VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
TOYOTA IS RECALLING CERTAIN MODEL YEAR 2008 THROUGH 2011 LEXUS LX570, 2003 THROUGH 2009 TOYOTA 4RUNNER, AND 2006 THROUGH 2010 RAV4 VEHICLES. THE ACCELERATOR PEDAL CAN GET STUCK IN THE WIDE OPEN POSITION DUE TO ITS BEING TRAPPED BY AN UNSECURED OR INCOMPATIBLE DRIVER'S FLOOR MAT.
AIR BAGS:SIDE/WINDOW
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2003-2006 Toyota Land Cruiser and Lexus LX470, 2005-2006 Toyota Tundra and Sequoia, 2004-2006 Toyota 4Runner and Lexus GX470 vehicles equipped with side curtain-shield-air bags. The affected vehicles have an air bag control module that may be improperly programmed, causing the side curtain-shield-air bags to deploy inadvertently.
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3rd- and 4th-gen 4Runners commonly develop power-steering whine and reddish ATF leaks with age. A whine is often not the pump itself but old fluid or a clogged filter screen in the bottom of the PS reservoir; leaks frequently originate at the union-bolt gaskets, high-pressure/ret… Repairs typically run $20-$500. Severity: medium.
Both V6 4Runners (3.0L 3VZ-E and 3.4L 5VZ-FE) use a water pump that is driven by, and buried behind, the timing belt. The pump's seal weeps coolant with age/mileage, and because it sits behind the timing cover the leak is easy to miss until the truck overheats or drips coolant fr… Repairs typically run $600-$1,200. Severity: medium.
4WD-equipped 4Runners use an Automatic Disconnecting Differential: a vacuum-operated actuator on the front differential slides a collar to couple the passenger-side front axle when 4WD is selected. With age the vacuum supply hoses crack, the vacuum switching valve/solenoid or the… Repairs typically run $150-$650. Severity: medium.
The 5VZ-FE water pump is driven off, and buried behind, the timing belt. Its shaft seal wears with age and mileage and coolant begins seeping from the pump's weep hole — the designed early-warning drip before the bearing fails. Because accessing the pump requires the same teardow… Repairs typically run $150-$900. Severity: medium.
On the 3rd-gen 4Runner's 3.4L 5VZ-FE V6, the two knock sensors sit in the engine valley beneath the upper and lower intake manifolds, and their sub-wiring harness bakes over time. The harness insulation becomes brittle and crumbles, opening the circuit and setting P0325 (knock se… Repairs typically run $150-$900. Severity: medium.
The 3.4L 5VZ-FE uses a rotary-solenoid Idle Air Control (IAC) valve on the throttle body to manage idle. Over high mileage the IAC passages and valve clog with carbon and oil deposits, producing erratic idle (hunting between ~700 and ~1200 RPM), high idle, or low idle that shakes… Repairs typically run $20-$350. Severity: low.
OBD-II 3rd-gen V6 4Runners (1996-1999, 3.4L 5VZ-FE) very commonly set code P0401 (EGR insufficient flow) as they age. The recirculated exhaust and the narrow EGR tube/passages coke up with carbon over the years, so even a working EGR valve can't flow enough gas, and the vacuum-mo… Repairs typically run $120-$500. Severity: low.
EVAP faults (P0440 general malfunction, P0441 incorrect purge flow, P0446 vent control circuit) are among the most common check-engine codes on 3rd- and 4th-gen 4Runners. Toyota issued service bulletin EG013-03 covering these codes across 4Runner/Camry/Tacoma. The frequent culpri… Repairs typically run $15-$500. Severity: low.
