2012 Toyota FJ Cruiser structure problems
11 owner complaints filed with NHTSA name the structure on the 2012 Toyota FJ Cruiser — 28% of all complaints for this model year.
What owners report
“My frame is corroding at a rapid rate and needs to be addressed by Toyota! I truly believe that this was cheap way of selling cars without the proper undercoating affecting these trucks later on most Toyota trucks had the frames replaced buy the dealers with the same problems that these fj cruisers…”
filed Aug 7, 2026
“Frame and undercarriage compromised by excessive rust on 2012 Toyota FJ Cruiser. Substandard materials/process used in manufacturing by Toyota on the FJ cruiser undercarriage and frame, causing excessive rust damage. Widespread problem in the United States with excessive rust compromising the…”
filed May 23, 2022
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds. If these contaminants settle and…
T-SB-0039-24 Rev2 · Service Bulletin/Repair Instructions · issued Dec 6, 2024To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film is to shield the disc brake rotor from…
T-SB-0038-24 Rev2 · Service Bulletin/Repair Instructions · issued Dec 6, 2024Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an exposed vehicle, especially the horizontal…
T-SB-0035-24 Rev2 · Service Bulletin/Repair Instructions · issued Dec 6, 2024Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal painted surfaces. This material protects from acid rain, environmental fallout, and rail contamination. Follow…
T-SB-0061-23 Rev2 · Service Bulletin/Repair Instructions · issued Dec 5, 2024Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc. This type of contamination can…
T-SB-0062-23 Rev2 · Service Bulletin/Repair Instructions · issued Dec 3, 2024
Structure problems in other FJ Cruiser years
| Year | Reports | Share |
|---|---|---|
| 2014 FJ Cruiser | 10 | 33% |
| 2013 FJ Cruiser | 10 | 43% |
| 2011 FJ Cruiser | 5 | 22% |
| 2010 FJ Cruiser | 13 | 20% |
| 2008 FJ Cruiser | 42 | 34% |
| 2007 FJ Cruiser | 238 | 40% |
Other reported problem areas on the 2012 Toyota FJ Cruiser
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.