2004 Toyota 4RUNNER Engine Problems
- Complaints
- 18about this part
- Share
- 3%of 678 total for the year
- Median mileage
- 136,500miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 18 complaints about the engine of the 2004 Toyota 4RUNNER, 3% of the 678 complaints for this model year. Where a mileage was given, the median is 136,500 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Had a misfire in #6 cylinder at 155k miles. I took it to a dealer and they told me that I had a head gasket starting to go bad that let coolant into that cylinder after I shut the engine off resulting in a rough cold start. The tech specialist gave me some nice information and after research I learned Toyota knew about the faulty head gaskets in their vehicles and came out with a new redesigned one, but they never told consumers and refuse to fo anything about it. Now my car is in the shop and quoted at $3200.”
NHTSA complaint #11156804, filed 2018-12, 155,000 miles“Vehicle engine light and other lights came on, took to dealer and told me code was po306 code was diagnosed stating there is a misfire in cylinder #6 resulting in a head gasket problem of coolant entering the cylinder & it would cost me 3000 to 5000 dollars to fix. Every time I start car in morning the car has a rough shacking start until warmed up, my car has 135000 miles & reviewing online this is a common problem with this engine around or after 120000 miles and that their are hundreds of complaints with the exact same issue I am having. …”
NHTSA complaint #10781907, filed 2015-10, 135,000 miles“My 4RUNNER check engine light came on and the vsc trak off lights came on with it. The trouble code indicated #6 cylinder misfire. After checking all the sensors it became obvious that there was a slight loss of coolant. Checked the engine and found that the head gasket for #6 had failed. Looking on line I see that there are hundreds of complaints about similar problems around the 120k miles mark. Isn't Toyota required to report these to NHTSA and should there be a recall on this? This problem seems very similar to an earlier Toyota issue that resulted in a recall. …”
NHTSA complaint #10726169, filed 2015-06, 125,000 miles“Blown head gasket at 150k miles. Potential to overheat to overheat while in operation leaving the passengers stranded or start an engine fire. Every local mechanic shop I received estimates from in knoxville was very familiar with this issue for this model year and the internet forum searches have hundreds of complaints for this same issue. No recall has been issued for this problem.”
NHTSA complaint #10925249, filed 2016-11, 155,000 miles“After reading online there are hundreds of reports of cylinder #6 failing with a head gasket issue which results in a 2500-4000 $$ repair bill. Toyota had a major recall for the 2nd generation 4RUNNER because of head gasket issues. They really need to address this issue b/c there is obviously a major problem with the 2004 4RUNNER v6 engine.”
NHTSA complaint #10550038, filed 2013-10, 148,000 milesRelated service bulletins
- 10164330Jul 1, 2019TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections…
- 10149217Sep 14, 2016TSB: Supersession Notice. Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are…
- 10150414Sep 8, 2016Technical Instructions: In our continuing effort to ensure the best in customer satisfaction, Toyota has converted Limited Service Campaign (LSC) BST into Special Service…
- 10150413Sep 8, 2016Dealer Package: In our continuing effort to ensure the best in customer satisfaction, Toyota has converted Limited Service Campaign (LSC) BST into Special Service Campaign (SSC)…
- 10150412Sep 8, 2016Dealer Package email: In our continuing effort to ensure the best in customer satisfaction, Toyota has converted Limited Service Campaign (LSC) BST into Special Service Campaign…
- 10150411Sep 8, 2016Region Letter: In our continuing effort to ensure the best in customer satisfaction, Toyota has converted Limited Service Campaign (LSC) BST into Special Service Campaign (SSC)…
- 10150410Sep 8, 2016Region Letter email: In our continuing effort to ensure the best in customer satisfaction, Toyota has converted Limited Service Campaign (LSC) BST into Special Service Campaign…
- 10134223Sep 15, 2015TT: The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted.
- 10096556Sep 15, 2015Tt: the vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the engine ecm has been interrupted.
- 10132529Aug 24, 2015TechTip: Condition - The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 2 | 3% |
| 2024 | 1 | 10% |
| 2023 | 2 | 6% |
| 2022 | 1 | 3% |
| 2019 | 6 | 9% |
| 2018 | 5 | 8% |
| 2017 | 2 | 6% |
| 2016 | 6 | 8% |
| 2015 | 8 | 9% |
| 2014 | 6 | 8% |
| 2013 | 3 | 8% |
| 2012 | 5 | 5% |
| 2011 | 6 | 4% |
| 2010 | 3 | 2% |
| 2009 | 2 | 9% |
| 2008 | 7 | 7% |
| 2007 | 3 | 2% |
| 2006 | 7 | 2% |
| 2005 | 21 | 5% |
| 2004 | 18 | 3% |
| 2003 | 10 | 1% |
| 2002 | 5 | 2% |
| 2001 | 5 | 3% |
| 2000 | 4 | 1% |
| 1999 | 3 | 1% |
| 1996 | 1 | 1% |
| 1995 | 8 | 5% |
| 1994 | 1 | 2% |
| 1992 | 1 | 2% |
| 1990 | 1 | 1% |
Other parts of the 2004 Toyota 4RUNNER
310 complaintsOther or unknown
121 complaintsSuspension
113 complaintsBrakes
82 complaintsAir bags
37 complaintsTransmission and drivetrain
36 complaintsVehicle speed control
34 complaintsSteering
32 complaintsEngine cooling
25 complaintsElectrical system
22 complaintsElectronic stability control
15 complaintsSeats
14 complaints
← All problems reported for the 2004 Toyota 4RUNNER
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology