One problem related to transmission gear slipping has been reported for the 2006 Toyota Camry. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Camry based on all problems reported for the 2006 Camry.
Unintended acceleration not caused by the accelerator at least a dozen times over the 2 years I owned the car. The first time was about a month after I bought the car used. As I entered my garage at a creep, I felt the transmission drop into the lowest gear then the car leaped forward. My foot was off the accelerator and poised over the brake petal as I was almost in my parking position. Shortly thereafter, I took car to the t. Dealer who reprogrammed the transmission. Similar sudden acceleration in several scenarios occurred at least a dozen times over the next 2 years at low speeds. Each time the sudden acceleration occurred instantly when the transmission dropped from a higher gear into a lower gear. I am a back yard mechanic and have been driving for over 50 years. I feel that one of two things could be wrong. 1. The wrong transmission oil was used. Of the 4 vehicles I have had here, the Camry was the only one which would climb over a one inch edge at the garage entrance without using the accelerator. The Camry did not have much transmission slip which could be a design fault or more probably an oil with the wrong slip characteristics. 2. The transmission lock-up that comes on in overdrive was malfunctioning.