Four problems related to differential unit have been reported for the 2006 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota 4Runner based on all problems reported for the 2006 4Runner.
Tl- the contact owns a 2006 Toyota 4runner. The contact stated that oil was discovered in the driveway where the vehicle was parked. The vehicle was taken to tarbox Toyota 3671 quaker ln, north kingstown, ri 02852 (401) 884-5438 where the contact was informed that the rear differential was leaking and the frame was rotted. The contact also mentioned that the vehicle could not be repaired due to the excessive rust on the frame. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 168,595. Dr.
After only a couple of years started rusting pretty badly on frame, crossmembers and front and rear differentials. Also stabilizers skid plates and basically anything under the truck. Thought it was only surface rust until parts were cracking and stabilizers fell off truck. Rear end was ready to drop off truck! truck only has 81,000 miles and looks brand new. Wanted to keep another 10 years! my wife and kid used this and could have crashed them both! frame rusted from inside out and dealer deemed undriveable this week! truck valued at $13-15,000! dealer wont warranty and not under tacoma and sequoia recalls! same frame issues Toyota! recall the 4 runner Toyota! major danger of frame looking ok from outside but crumbling and falling apart while driving. Have been a mechanic and body person all my life and never seen rusting and crumbling of a frame in chunks falling off! wake up Toyota, recall the 4runner or fix my frame! cannot drive truck!.
During snowstorm in 4 wheel drive mode; 4 wheel drive system would not engage due to failure of add - auto disconnecting differential actuator. This led to extremely dangerous safety hazard with vehicle sliding across overhead bridge. No warning of failure, just blinking 4 wheel drive indicator on dashboard. Toyota should be ordered to replace this part for free on all 4 wheel drive 4runners. This part has also been out-of-stock in the USA due to extremely high failure rate. Note: failure occurs when vehicle is in driving mode in winter weather which represents a major safety hazard to Toyota 4runner drivers and occupants.
New 2006 Toyota 4runner has 10,000 miles, leaking oil from rear differential, I was told it was defect of the seal from the manufacturer, I was told the seal has to be has replaced. Now I am waiting since the part had to be ordered.