It depends on the engine: V6 Chain, 4.7 V8 belt, 5.7 V8 Chain.
it is timing chain
Timing Chain......
In 2008 the Toyota Highlander V-6 engine was equipped with a timing CHAIN.
Timing chains are designed to last the life of the engine and are normally replaced during a complete engine rebuild. No maintenance is necessary.
it has a timing chain 05-08
Timing belt
Belt.
On a 2008 Toyota RAV4 : Both the 2.4 liter four cylinder engine and the 3.5 liter V6 engine have a timing CHAIN
98 - 2008 has timing Chain, according to toyota.custhelp.com =p (1997 has timing belt)
The 2008 Lexus IS250 uses the 4GR-FSE Toyota V6 engine, which has a timing chain.
2008 1.6 petrol toyota avensis timing belt or chain ?
2.0 & 2.4 are chain 3.0 are belts (strange but true)