2012 Toyota 4RUNNER problems & reliability
96 owner complaints filed with NHTSA for the 2012 Toyota 4RUNNER, alongside 8 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
5 complaints report injuries (9 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags | 70 | 73% |
| Electrical System | 6 | 6% |
| Service Brakes | 6 | 6% |
| Unknown OR Other | 6 | 6% |
| Engine | 5 | 5% |
| Steering | 5 | 5% |
| Fuel System, Gasoline | 3 | 3% |
| Fuel/propulsion System | 2 | 2% |
| Structure | 2 | 2% |
| Suspension | 2 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 46,122 miles (middle 50% between 28,500 and 78,750 miles), based on 30 complaints that included mileage.
Complaints by incident year
What owners report
“Consistent steering wheel shake between 60-65 mph. This is a very well known issue on the 2010-2024 4Runners and it drives me and many others crazy, and feels unsafe to drive with. Will happen almost anytime I’m on the highway. My vehicle only has 48k miles. This needs to be addressed.”
Steering · filed Mar 13, 2026
“Vehicle radiator light came on, shortly thereafter (5-10 min) vehicle overheated. Waited for vehicle to cool down, then drove home. The following day drove the vehicle to dealership. After an inspection the dealer stated the heads are cracked and needed to be replaced. When I asked how this could happen to a car that…”
Engine · filed Jul 13, 2022
“The contact owns a 2012 Toyota 4Runner. The contact stated while driving 50 MPH, the vehicle lost motive power and stalled. There was no warning light illuminated. The Police Department called and arranged for the vehicle to be towed to an authorized dealer to be diagnosed. The contact was informed that the fuel pump…”
Fuel System, Gasoline · filed Jun 3, 2022
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Desiccated Air Bag Inflator Rupture
Engineering Analysis EA21002 · opened Sep 17, 2021 · open
Technical service bulletins
356 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2012 Toyota 4RUNNER. The 10 most recent:
Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
T-SB-0055-24 Rev2 · Service Bulletin/Repair Instructions · issued Jan 7, 2026
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, 2024
To 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, 2024
Acid 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, 2024
Toyota 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, 2024
Vehicles 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
Some 2005 – 2024 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
T-SB-0055-24 Rev1 · Service Bulletin/Repair Instructions · issued Jul 29, 2024
Some 2005 – 2024 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
T-SB-0055-24 Rev1 · Service Bulletin/Repair Instructions · issued Jul 29, 2024
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 Rev1 · Service Bulletin/Repair Instructions · issued Jul 12, 2024
To 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 Rev1 · Service Bulletin/Repair Instructions · issued Jul 12, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2012 Toyota 4RUNNER has 8 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2012 Toyota 4RUNNER?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 46,122 miles — budget accordingly if the car is approaching that mileage.