If the engine will not crank over, the most common problem is the starter. These will tend to go out at about 100,00-125,000 miles. Sometimes it is only the starter solenoid, but often the complete starter (including solenoid) needs to be replaced.
Engine Won't Crank Due To Starter on Toyota Avalon
Average mileage: 145,387 (110,000–200,100)
12 people reported this problem
1995 Toyota Avalon 130,000 mi, Visitor
Car wouldn't crank, had to replace starter. Only took me an hour or so to pull the old and put in a new one.
2000 Toyota Avalon 150,000 mi, Visitor
1995 Toyota Avalon 120,000 mi, Visitor
Had to replace starter. But it is so easy on this model. You don't have to crawl under car. Just remove the air box for easy access.
1997 Toyota Avalon 200,100 mi, Visitor
Turn ignition on and it clicks,keep trying it multiple times and finally fires up.think it may be starter and just change it over and see if that fixes the problem
1997 Toyota Avalon 150,000 mi, Visitor
new starter, new alternator, and a new battery