Two problems related to transmission slip out of gear have been reported for the 2003 Toyota Corolla. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Corolla based on all problems reported for the 2003 Corolla.
Twice while driving the car has suddenly dropped out of overdrive while coasting on flat road or going down a slight hill. In addition, the engine makes an unusual and very loud 'tingy' or high pitched reving noise when accelerating, which disappears when at cruising speed. The first incident occured about 2 weeks ago and was followed by the inability to go above 15 mph. This persisted despite pressing the accelerator fully to the floor. The only way to stop this was to pull over and restart the car. The most recent incitent only involved dropping out of overdrive. Dealership has been contacted and has tried to find problem with no success. Manufacturer will be contacted.
Vehicle drops out of over drive while going down a slight hill and gently applying the brakes to slow down. Also does it while going straight on highway, at 60 mph or higher and applying the brakes with medium pressure. Does not resume over drive for 1/2 mile after that.