Problems · NHTSA complaints

2004 Toyota 4Runner problems

Owners filed 678 complaints about the 2004 Toyota 4Runner with NHTSA between Nov 2003 and Jun 2026. The most-cited component is structure (310).

Complaints
678
Filed with NHTSA
Crashes
28
Reported by owners
Fires
3
Reported by owners
Injuries
20
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Structure310
  2. Suspension113
  3. Service brakes57
  4. Air bags37
  5. Power train36
  6. Vehicle speed control34
  7. Steering32
  8. Engine and engine cooling25
  9. Service brakes, hydraulic23
  10. Electrical system22
  11. Engine18
  12. Electronic stability control (esc)15
  13. Seats14
  14. Tires12

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 9, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20033
200446
200515
20066
200710
20089
200916
201034
201126
201221
201317
201434
201530
201646
201735
201880
201998
202054
202132
202226
202318
202411
202510
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Structure

310 reports5 crashes1 fire
“What component or system failed or malfunctioned, and is it available for inspection upon request? Response: Frame, Suspension, Airbags / Yes it is available for inspection. How was your safety or the safety of others put at risk? Response: Safety was put at risk due to frame & suspension failure due to severe rust. Also due to failure of deployment of AirBags. Rusted Frame Failure subsequently caused safety of Injured Party and other motorists to be at risk due to the Injured Party’s 4Runner to dart across oncoming lane of traffic with no warning other than a swaying motion felt immediately before losing control. Once the Injured Party lost control of the 4Runner it crossed into oncoming traffic, progressing into the drainage ditch on the oncoming traffic side of highway. Once the 4Runner impacted the drainage ditch at a 90° angle, the 4Runners momentum dispersed by causing the 4Runner to overturn 3 times landing on its wheels in the adjoining field. Has the problem been reproduced or confirmed by a dealer or independent service center? Repaonse: Independent Service Center has confirmed the problem with the Rusted Frame, Rusted Suspension, and Air Bag failure.…”
Owner complaint to NHTSAFiled Dec 29, 2025Suspension, Air bags, StructureCrash reportedODI 11707650

Suspension

113 reports2 crashes
“Rusty frame undercarriage. It’s not going to get any better due to the fact I have to drive on hwy 80 with all the construction, that’s a hazard itself, potholes everywhere that puts stress on your frame and the salt every winter.”
Owner complaint to NHTSAFiled Oct 20, 2024Suspension, Electrical system, StructureODI 11620842

Service brakes

57 reports4 crashes
“UNKNOWN: Excessive frame rust. frame is excessively rusting to the point where the brakes and suspensions is connected to the frame has been compromised. brake lines rusted to the point of failure, thus almost causing a wreck. Vehicle is now parked due to safety concerns involving the excessive rusting that is happening to the frame and any components that is attached to the frame.”
Owner complaint to NHTSAFiled Sep 22, 2024Suspension, Structure, Service brakesODI 11615836

Air bags

37 reports14 crashes1 related recall
“The contact owned a 2004 Toyota 4 Runner. The contact stated that the driver’s and front passenger air bags failed. The contact stated that when at complete a stop at the red traffic light, the vehicle in the rear failed to stop and crashed into the contact's vehicle rear-end, pushing the vehicle into the roadway. The driver’s and front passenger air bags failed to deploy and caused the front passenger's head to hit the dashboard, suffered injuries to the head, six broken back vertebrae, three broken ribs, head concussion. The contact was the driver and had no injuries to report. The front passenger who was her husband was airlifted to the hospital. The State Trooper mentioned that the other driver might have been on their phone however it was unknown due to them suffering fatal injuries. A police report was filed. The vehicle was towed. The contact advised that the vehicle was destroyed. The manufacturer was not contacted. The failure mileage was 238,000.”
Owner complaint to NHTSAFiled Sep 10, 2021Air bagsCrash reportedODI 11432489

Power train

36 reports
“2004 Toyota 4Runner SR5 - Frame rust: currently not drivable due to complete breakage from the rust. Driving 2 hours home on the highway I almost lost control, pressing/releasing the brake and/or gas pulls the steering side to side and sways the truck (fish tail) due to damage from the frame rust/breaking. There is no control of the rear end. Truck was in great condition prior to the frame snapping. Vehicle has been inspected by multiple mechanics (including Firestone, Welding/fabricating Auto Repair shops and small owned mechanic shops), possibly won’t be able to weld due to the amount of rust. Firestone won’t perform any service if the vehicle needs to go in the air (tires, oil..etc) due to frame rust. This has been a huge problem with Toyota, they addressed other models around the same year but excluded the 4Runner for unknown reasons. The dealership will not address the issue unless instructed by corporate. This problem jeopardized my safety and the safety of others around while I was driving at highway speeds, there was no warning when it occurred. Vehicle is available for inspection any time, as it currently is not going anywhere without a tow.”
Owner complaint to NHTSAFiled Aug 9, 2025Power train, StructureODI 11679499

Vehicle speed control

34 reports4 crashes1 related recall
“THE FRAME HAS SO MUCH RUST ON IT AND OTHER AREAS OF THE UNDERCARGO THAT IT HAS CAUSED MY SPEED AND ABS SENSORS TO WORK IMPROPERLY. SPEEDOMETER WILL JUST QUIT WORKING AND ABS LIGHTS WILL COME ON WITH THE VCS TRAC, VCS OFF, AND ABS LIGHTS ALL COMING ON, THEN THE ENGINE LIGHT WILL ALSO COME ON FROM TIME TO TIME. THERE IS ALREADY A HOLE RUSTED THROUGH THE FRAME AND MECHANIC SAID IT WAS JUST A MATTER OF TIME BEFORE IT RUSTED THROUGH AND BROKE.”
Owner complaint to NHTSAFiled Dec 11, 2018Structure, Vehicle speed controlODI 11160695
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.