Maximum 90K miles.
No, changing the timing belt on a Toyota Highlander 4 cylinder is not difficult. You will need to remove the skid plate from under the vehicle to access the belt more easily.
The Gates website ( they make timing belts etcetera ) shows for the 2.2 liter four cylinder engine in a 1997 Toyota Camry : ( they recommend changing the timing belt at 60,000 miles severe )
The 2.4 liter four cylinder in a 2004 Toyota Camry has a timing CHAIN
It is recommended at 90000 miles before major problems result from not changing it
The 2.7 liter four cylinder engine in a 2007 Toyota Tacoma has a timing CHAIN
For the 6-cylinder engine my owner's manual says 90,000 miles.
No , the 2.4 litre four cylinder engine in a 2007 Toyota Camry has a timing CHAIN
The 2006 Toyota RAV4 4cyl has a timing chain.
It appears that the 1996 Toyota Tacoma has a timing belt.
Your 2.4 liter - 4 cylinder - has a timing CHAIN
The 2.2 liter four cylinder engine in a 2000 Toyota Camry has a timing BELT
Yes , the 2.4 litre four cylinder engine in a 2006 Toyota Camry has a timing CHAIN