One problem related to automatic transmission control module 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.
Consumer states while driving 45-60 mph, especially when making turns, the front left wheel suddenly breaks, the vehicle decelerates, a buzzer alarm sounds (with no warning light on) and the steering wheel becomes uncontrollable. The condition is similar to hitting a water puddle with the front wheel. This happens 2 to 3 times a month. Dealer could not find any abnormal condition with the traction control system.