2006 Toyota Highlander

Engine Mechanical problem
2006 Toyota Highlander 6 cyl All Wheel Drive Automatic 90340 miles

The Owners Manual calls for replacement of timing belt at 90,000 miles. It is at 90,000 miles and I intend to keep the car another 30,000 miles. Is this replacement necessary and if I don't what are my risks?
January 23, 2010.

It is a regularly maintenanced item and should be replaced at the manufacturer's suggested intervals. Not doing so can cause timing belt failure, which in turn may damage internal parts of the motor such as bending valves etc. If you're only keeping it another 30k miles then it is up to you if you want to risk it or not. If you was keeping it for unknown amount of time then definitely replace it.

Jan 23, 2010.