2005 Toyota 4RUNNER Engine cooling Problems
- Complaints
- 10about this part
- Share
- 2%of 425 total for the year
- Median mileage
- 13,550miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the engine cooling of the 2005 Toyota 4RUNNER, 2% of the 425 complaints for this model year. Where a mileage was given, the median is 13,550 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“V8, 4wd. Idle RPM is way too high. When A/C compressor kicks in idle can be as high as 1500 RPM. Have to be very careful pulling into garage, as the brake is very difficult to modulate at that RPM. Twice into dealer for this and told ...it is normal . Wife afraid to drive into the garage and I have to be very aware when A/C is on. Have never seen a vehicle idle at this high an RPM. Difficult to hold at stop sign and will idle away at a good pace with no accelerator applied.”
NHTSA complaint #10182811, filed 2007-02, 10 miles“I have a 2005 Toyota 4runner sport and there is a horrible sulfur smell that is emitted into the cabin while reaching RPM's of approximately 3000 - 5000.”
NHTSA complaint #10129002, filed 2005-07, 100 miles“While stopped, my 2005 4runner moves forward when compressor engages. The RPM at idle will fluctuate between 750 and 1100. During the later portion of fluctuation, abnormal brake pressure is needed to keep the 4runner from moving forward. Idle speeds can reach 25 MPH on flat surface and 45 on moderate slope. If you are cruising at 60 MPH and remove pressure from accelerator, vehicle idle will retain 55 MPH. Toyota claims this is normal. Please investigate before this causes a severe accident. If you forget to apply massive force to brake pedal while stopped... …”
NHTSA complaint #10144479, filed 2005-12, 2,000 miles“There is an awful rotten egg sulfur smell being emitted from my 2005 Toyota 4 RUNNER when driving with back window open. After doing much research, I see there have been many TSB's issued for 4 runners dating back to 2003 and up to the 2006 models. I brought my car into the dealer, but they tell me my engine is not covered under the TSB's issued. I feel this is a problem that should be covered.”
NHTSA complaint #10155575, filed 2006-04“The contact owns a 2005 Toyota runner. The contact stated that the check engine light was illuminated. The vehicle was taken to the dealer where the contact was advised that the air induction pump failed. In addition, the contact stated that the secondary air injection switch was also damaged as a result of the air induction pump failure. The air induction pump was replaced but the failure persisted. The manufacturer was notified of the failure who advised the contact that there were no recalls for the failure and offered no further assistance. The failure mileage was 90,000.”
NHTSA complaint #10441663, filed 2011-12, 90,000 milesRelated service bulletins
- 10253223Mar 4, 2024This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the…
- 10177599Jun 3, 2020These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no…
- 10177598Jun 3, 2020These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no…
- 10061567Apr 23, 2013Summary to be provided on a future date.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 3% |
| 2015 | 1 | 1% |
| 2009 | 2 | 9% |
| 2008 | 2 | 2% |
| 2007 | 7 | 5% |
| 2006 | 11 | 3% |
| 2005 | 10 | 2% |
| 2004 | 25 | 4% |
| 2003 | 89 | 13% |
| 2002 | 12 | 5% |
| 2001 | 13 | 7% |
| 2000 | 13 | 3% |
| 1999 | 15 | 5% |
| 1998 | 16 | 6% |
| 1997 | 14 | 5% |
| 1996 | 25 | 16% |
| 1995 | 107 | 62% |
| 1994 | 26 | 41% |
| 1993 | 20 | 39% |
| 1992 | 18 | 34% |
| 1991 | 20 | 47% |
| 1990 | 38 | 49% |
| 1989 | 2 | 33% |
| 1988 | 2 | 22% |
| 1986 | 2 | 25% |
Other parts of the 2005 Toyota 4RUNNER
185 complaintsSuspension
77 complaintsOther or unknown
68 complaintsBrakes
32 complaintsSteering
29 complaintsVehicle speed control
29 complaintsVisibility (wipers, defrost, mirrors)
26 complaintsTransmission and drivetrain
25 complaintsEngine
21 complaintsAir bags
19 complaintsTires
12 complaintsElectrical system
9 complaints
← All problems reported for the 2005 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