The 2003 4Runner is less reliable than other cars from the same model year.
The Reliability score is based on our latest subscriber survey of 2003 Toyota 4Runner owners. The owner comments describe problems respondents experienced with this vehicle.
Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
"Most of the problems, other than complete failure of the a/c system can be attributed to a massive malignant rust problem of the frame and all metal parts on this vehicle. The vehicles should have been recalls as it is a systemic problem w/these 4Runners. There was a class action suit brewing. Fortunately, my husband has welding skills and has been welding Humpty Dumpty back together as the diffusion rust spreads, but he cannot seem to keep up."
Anonymous, GA (2003 Toyota 4Runner Limited 4.7-L V8)Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
""Engine sounds were very loud and although I could drive it, it became louder and I I didnt like that I was driving a car that would not pass a smog test.""
Anonymous A., CA (2003 Toyota 4Runner Unsure 4.0-L V6)Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
""transmission mount, bushings for steering""
Anonymous, AZ (2003 Toyota 4Runner SR5 4.0-L V6)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
""Vibration at 60MPH, Struts are original with car so issue is not a surprise""
Anonymous A., MD (2003 Toyota 4Runner Limited 4.7-L V8)