One problem related to transmission not go into gear has been reported for the 2001 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Toyota 4Runner based on all problems reported for the 2001 4Runner.
Less than 20000 miles after I had a remanufactured transmission installed, by Toyota, in my 2001 Toyota 4runner the vehicle became unresponsive to throttle input. The engine was running but the vehicle would not move in any gear. I put the vehicle in park and let off of the brake and the vehicle began rolling backwards down the hill. I applied the foot brake to keep the car from rolling further and shut off the vehicle. After a few minutes I started the vehicle back up low and behold, the vehicle operated normally. Today, I had a surge in the transmission while driving and the check engine light came on. Contacted Toyota for service. I have had numerous electrical problems with this vehicle but feel that this one posed a safety hazard worthy of reporting.