The timing belt on your 2004 Avalon should be replaced every 90,000 miles or 10 years whichever comes first.
90,000 miles
change clock on a 2007 avalon
Factory recommendation to change the spark plugs on a 2000 Toyota Avalon is 120.000 miles.
You need to change the timing belt each 90K miles.
Change it at 90,000 miles.
90,000 miles
Change it every 90,000 miles.
90,000 miles.
At 90K miles.
Every 60,000 miles.
Domestics are usually 60k miles and foreign are usually 90k miles for timing belt replacements. I'm not sure if there is a certain number of years they say to change it even if you haven't passed 90k on your car. I recommend calling a local Toyota dealership and asking someone in the Service department the same question.
my engine came on when i still have 30 miles from home on my 2000 toyota avalon