If the engine has a timing belt, it should be changed around the 150K mark.
If there is a timing chain, it does not have to be changed unless it is damaged.
You don't as it has a chain not a belt.
No . Have some mechanical assistant
when do you change timing chain on 2003 Toyota 4-runner?
The 2.7 liter 4cylinder and the 4.0 liter V6 engines in a 2011 Toyota Tacoma have timing CHAINS
Usually people change the timing chain after 200K mikes.
I have a 2006 Toyota highlander hybrid, do I need to change timing belt or chain?
The 2.4 liter four cylinder engine in a 2000 Pontiac Grand Am has a timing CHAIN
You don't change it. The Toyota Matrix has a timing chain that will last the life of the engine.
Toyota Echos have a timing chain rather than a timing belt so there is no need to change it.
2004 Toyota Sequoia has a timing CHAIN, not belt, so I would assume that an '03 also has a chain.
Toyota 4 cyl have always came with timing chains. The v6 have timing belts
Timing belt. Recommended 90,000 mile change.