There are 50 owner-reported body & structure complaints for the 2005 Toyota 4Runnerin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2005 Toyota 4Runner. The contact stated that while driving at an undisclosed speed, the vehicle briefly hesitated and was unable to accelerate, prompting the contact to discontinue driving the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the catalytic converter. The contact was also made aware that the mechanic discovered excessive corrosion covering the entire subframe of the vehicle. The contact was advised not to drive the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 205,000.
Under frame is rusted. The area between the doors in the passenger side is gone. only the top face of the member is present.
Frame rot. The frame on the 4Runner is a known problem for excessive rot. My frame is shot. There is no reason a frame on a 2005 should be rotted. I was advised by my mechanic that my frame is dangerously close to snapping in half. This needs fixed by Toyota!
Frame has very severe rust and has started to come part in places. Soon vehicle will no longer be road worthy.
When I first saw the pictures on the internet, I noticed that the front underside appeared to have rust issues. (Frontal shot) I contacted that sales person and he blew me off when I requested photos of the underbody. After several attempts, he finally sent a couple of pictures. The pictures obviously did not show the major rust issues as I have provided. The pictures were carefully fabricated not to show the major rust issues. It was apparent that the vehicle was taken off the internet while they hid the rusty underbody by applying some coating. A short time later, the dealership reposted the vehicle on their website. The vehicle was not properly advertised as having this major rust issue. I asked the salesman if his family was driving the vehicle, would he feel safe. He replied, "Absolutely". With this said, I decided to purchase the vehicle. Also, my signature is not on the "We owe". Also, the vehicle has an exhaust leak from the manifold area. It makes a loud ticking noise. This is going to cost approximately $1,500 to fix. The air conditioner is not blowing cold and either has a leak or in need of freon. This is another repair out of my pocket. This is what kind of pre-owned vehicle they sold me. This vehicle should have never been listed for sale.
The contact owns a 2005 Toyota 4Runner. The contact stated that the subframe was rusted. The TPMS warning light was illuminated. The vehicle was taken to an independent mechanic, who repaired the TPMS, but the failure persisted. The vehicle was taken to the local dealer, where it was diagnosed that the frame was rusted and recommended that the vehicle no longer be driven. The mechanic referred the contact to the manufacturer. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline. The failure mileage was approximately 200,948.
Frame on 2005 Toyota 4Runner has excessive rust due to Toyota’s negligence on frame production. I can make it available if needed. My safety is 100% compromised, had my mechanic not have told me of the issue, I would have kept driving the vehicle and the suspension could have detached from the frame at any point. The problem has been confirmed by my independent service center South Lake Automotive. It has not been inspected by police, manufacturer or other. There was no warning prior to the failure. Had I not had it pointed out as an issue, I would never have known it was an issue.
Frame of the vehicle is rusting from the inside out. Upon inspection, holes in the frame are found, with many more hidden from sight. This is a disaster waiting to happen. This puts the driver and anyone else on the road at extreme risk if the frame breaks while driving. This problem is well documented with Toyota, and they have previously replaced Tacoma, Sequoia, and Tundra frames, but not 4runners. Everyone is at risk with these frames, even if it does not appear so. My frame looked solid until I began hitting it with a hammer and screwdriver and breaking away very weak spots of metal.
I took my vehicle into the Toyota Dealer after mechanic told my frame was rusting. The dealership confirm the frame is rusted. The frame of the vehicle should not be rusting out.
I own a 2005 Toyota four runner. The frame under the truck is completely rusted out everywhere. The car started swaying and I felt as though my vehicle was going to go out from under me. It felt like it was collapsing or melting underneath. This is my family vehicle. It was a dangerous situation and my entire family was in the vehicle. My spouse a children. I took it to a independent shop. The mechanic said that the frame had rusted out under the Toyota. He told me to park it and not drive it because it was about to split apart. He said that we were very lucky and just moments from a catastrophe. He also told me that their had already been a recall and replacement of the malfunctioning frames on Toyota Sequoia, Tacoma and tundra. In his professional option he thought Toyota should do the same type recall for the rusted out frame problem on the four runner. You are the first and only person I have reported this to. I will wait for your response and next steps: [XXX] Cell number [XXX] Home number [XXX] [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
I have a 2005 4Runner with significantly rusted out frame that makes me worried about safety of driving it. I feel the amount of corrosion present is way beyond what I would expect for that year of vehicle
My 2005 4Runner frame is completed covered in rust and is corroding. Several places on the frame is rotting away.
Extreme rusting on frame and all parts under the carriage. Vehicle suspension and all moving parts underneath could fail or fall apart causing major accident or death to me or other vehicle.
The contact owns a 2005 Toyota 4Runner. The contact stated that after purchasing the vehicle, it was discovered that the subframe of the vehicle was severely rusted. The cause of the failure was not determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 212,000.
Extreme frame rusting completely thru at the point of being unsafe and unable to put the truck on a lift for any repairs. A number of SAE mechanics warned me about driving this truck due to the extreme frame rusting. Sections almost completely separating apart. I have rust proofed and undercoated the under carriage at least three times. Toyota should make good on their negligence to properly rust coat their frames at times of manufacturing.
Really bad rame rust with holes through frame and frame components. I have pictures showing it’s the entire frame, not just the few spots. I had a shop replace the gas tank straps and when I picked it up they told me/warned me the frame had really bad rust. Have read about others having same or worse problems with chassis rust with this generation of 4Runners.
I would like to complain regarding my 2005 4Runner. Went to have the fluid changed at a dealership in the early part of July 2021 and they could not perform the service due to excessive underbody rust and corrosion . Therefore the I will have to find a service that can remove the corrosion to be able to have the shocks change, differential fluid change and to check and perform service on the brakes. The corrosion is starting to eat at the key components of the vehicle to the point where I may not be able to drive. Steering will be restricted and brakes will malfunction if they cannot get to the remove the areas to service the vehicle.
My frame is starting to rust very terribly no matter what i do to maintain it. The radiator support is completely rotted out and the rear part of the frame is getting worse by the month. This will cause a major injury in the case of an accident or the frame will break off while driving
Excessive frame corrosion. Mounting bracket that connects the lateral arm to the frame failed due to the deterioration of the frame. The rear axle is no longer perpendicular to the length of the car. I am experiencing a symmetric acceleration and braking performance and unpredictable steering.
I had my 2005 Toyota 4runner Limited serviced today. The mechanic will not work on the vehicle due to excessive rust and holes in the frame. The vehicle looks immaculate on the inside and out, but due to the corrosion underneath I am being advised to junk the vehicle as it is unsafe to drive.
Showing 1–20 of 50 complaints
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026