One problem related to differential unit has been reported for the 2009 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Toyota 4Runner based on all problems reported for the 2009 4Runner.
I have a 2001 Toyota 4runner. The rear differential leaks oil through pin holes, and from what I have read, mine is not the only one. The car barely has 100,000 miles on it, and the differential should last as long as the car. The risk is that it will run dry, seize, and the rear wheels will lock up causing an accident. This is clearly a defect by Toyota reducing the cost of their material the construct the differential housing with.
| Power Train problems | |
| Transmission Gear Slipping problems | |
| Automatic Transmission problems | |
| Differential Unit problems |