One problem related to power assist brake has been reported for the 2003 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota 4Runner based on all problems reported for the 2003 4Runner.
This condition could be related to item 2. This condition started last winter and is getting worse. ) after being at a stop and releasing the brakes, I get a hard shake/thud from the driveline/brakes. This occurs in 90% of stops/starts. (e. G. , if it was normal, it would do it all the time to some degree. ) there is no metal on metal noise, just the shake/thud like the brakes are releasing too hard or the driveline has too much lash in it. (condition is worse if you come to a hard stop, before starting again. ) 2) sometimes (about 20% of the time) after coming to a complete stop at a stop sign or red light, the transmission goes into first gear hard and/or the converter/torsen differential is unlocking/locking incorrectly. It will actually rock the vehicle forward. Sometimes it gives the same sensation as in item 3. (actually, on a few occasions I get item 2 problem followed by an item 1 problem.