Problems · by component
2004 Toyota 4Runner suspension problems
113 owner complaints to NHTSA about the 2004 Toyota 4Runner cite suspension, 17% of all 678 complaints for this model year.
Complaints
113
17% of all complaints
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
1
Reported by owners
What owners say about the suspension
Verbatim from NHTSA complaints, newest first
“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.…”
“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.”
“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.”
“I recently bought a 2004 Toyota 4 Runner and the frame of the vehicle has significant corrosion to the extent of holes, weld failures and more. I've never seen frame rust so bad on a vehicle like this. I'm a little uneasy about the safety of this situation. I think Toyota should replace the frame or give a good discount on the part and labor. I hope someone can help me out with this concern.”
“Cars frame is rotting out to the point it is not safe to drive. I was told being in a collision could cause catastrophic failure and the car is just turning 20 years old with 125,000 miles. Can’t get my money back and the car is otherwise is excellent condition.”
“Took 2004 Toyota 4Runner SR5 to Toyota dealership to be serviced. Dealership called me to explain unable to do alignment, due to rear back frame excessive rusted through. Dealership advised waste of money to align new tires just purchased, unable to even do alignment and it was dangerous. Now what is to be done? This is my daily driver for work. How did this happen that its unsafe and dangerous to drive.”
Showing 6 of 113 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.