2001 Toyota 4RUNNER problems & reliability
154 owner complaints filed with NHTSA for the 2001 Toyota 4RUNNER, alongside 1 safety recall campaign. 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.
7 complaints report injuries (11 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Structure | 79 | 51% |
| Power Train | 28 | 18% |
| Suspension | 25 | 16% |
| Unknown OR Other | 22 | 14% |
| Steering | 7 | 5% |
| Air Bags | 5 | 3% |
| Engine | 5 | 3% |
| Engine and Engine Cooling | 5 | 3% |
| Electrical System | 4 | 3% |
| Service Brakes, Hydraulic | 4 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 125,563 miles (middle 50% between 109,991 and 170,000 miles), based on 132 complaints that included mileage.
Complaints by incident year
What owners report
“The contact owns a 2001 Toyota 4Runner. The contact stated that while driving approximately 15 MPH, there was a thumping and clicking sound coming from the front of the vehicle before the front passenger’s side of the vehicle unintendedly lowered. The vehicle was stopped and inspected, and the ball joint was touching…”
Suspension · filed Feb 19, 2026
“I bought my 4Runner in 2021 and am just now getting ready to sell it. Did a carfax report and it shows a possible odometer rollback that the previous owner did in 2020. When I bought the vehicle it was my understanding that the vehicle had only 160,000 miles on it but it apparently had 236,900 miles. Because of this…”
Unknown OR Other · filed May 20, 2025
“The contact owns a 2001 Toyota 4Runner. The contact stated that he noticed a swaying while driving the vehicle. The vehicle was taken to a certified mechanic who stated that the sub frame was severely rusted between the sway bar and the differential. The certified mechanic referred the contact to the dealer. The…”
Structure · filed Aug 16, 2021
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
94 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2001 Toyota 4RUNNER. The 10 most recent:
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
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
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 Rev1 · Service Bulletin/Repair Instructions · issued Jul 12, 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 2001 Toyota 4RUNNER has 1 NHTSA recall campaign — 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 2001 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 125,563 miles — budget accordingly if the car is approaching that mileage.