If the vehicle will not crank over, the most common problem is the starter, which tend to fail at about 100,00-125,000 miles. Sometimes it is only the starter solenoid contacts, but often the complete starter (including solenoid) needs to be replaced.Google+
Car Problem Reports
Toyota T100 Vehicle Won't Crank Due To Starter
Toyota T100 Problem
Average Mileage: 155,500 mi (130,000 mi - 181,000 mi)
Visitor, 1996 Toyota T100, 130,000 mi
Starter went out, would turn the key and it would click once but that's all.