The automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to be replaced. Typically the transmission does not need to be completely overhauled.Google+
Car Problem Reports
Toyota Land Cruiser Automatic Transmission May Not Shift Correctly at High Mileages
Toyota Land Cruiser Problem
Average Mileage: 225,173 mi (199,347 mi - 251,000 mi)
Visitor, 1992 Toyota Land Cruiser, 251,000 mi
Just started not wanting to upshift. Isn't an every time driving issue but at least once or twice a trip.