Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety. Notes: Although it has a stellar record in terms of vehicle problems, initially the 4th generation (2003 - 2009) 4Runner didn't earn our top "Seal of Awesome" rating because it received poor crash test ratings for rear impacts. However it's proven to have one of the lowest driver death rates out of all vehicles (not just SUVs), so we've bumped it back up to our top award.


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
30,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Toyota 4Runner engine problems

engine problem

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2003 Toyota 4Runner Owner Comments

problem #3

Aug 172016

4Runner 6-cyl

  • miles


This 2003 Toyota 4runner has 135,000 miles on the odometer and the frame and exhaust system including catalytic converter are completely rusted out and the vehicle is now unsafe to drive. Some frame components have completely rusted and broken off from the frame I.e. tow hooks, exhaust and engine mounts. The frame is only held on to the body by the shock absorbers. The vehicle can no longer be driven safely. The cost to repair this damage would be prohibitive and I believe that this issue needs to be addressed by Toyota. I purchased this vehicle in good faith and trusted that Toyota quality would last. Please advise any possible recourse. Thank you

- Plympton, MA, USA

problem #2

Jun 102011


  • 90,000 miles
The engine, vsc trac and vsc warning indicators illuminated continuously on the instrument panel. The vehicle was taken to an authorized dealer. The engine 02 sensors were found to be defective. The manufacture will not replace or replace since there are no advisories on the part. There is a high risk the engine may under perform which may cause lack of control and a potential accident while driving. Leading to injury.

- Plantation, FL, USA

problem #1

Aug 112010


  • miles
TL-the contact owns a 2003 Toyota 4runner. The contact stated while driving various speeds the engine, vsc trac and vsc warning indicators illuminated continuously on the instrument panel. The vehicle was taken to an authorized dealer five times and twice to an independent mechanic. The engine 02 sensors had been replaced even times. The manufacturer was not notified of the problem. The failure mileage and VIN were unavailable.

- Temecula, CA, USA

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