Two problems related to transmission failure have been reported for the 1998 Toyota Avalon. The most recently reported issues are listed below.
Automatic transmission failed at 69,500 mark. Ook car into dealer and thought it was noisy brakes. Rove about 100 more miles and something broke. The transmission almost seized, could of caused an accident.
While sitting in the vehicle it suddenly began to roll backwards, as a result the vehicle dropped over an embankment rolled over once and came to rest up right, possible transmission failure(kentucky uniform police traffic collision report). Nlm.