1999 Lexus? The LS300 i think has a timing belt. I am not sure. Your going to want to check with a mechanic to make sure.
A 2007 Lexus ES350 has a timing chain. This will lower the costs in repairs since the timing chain should last as long as the engine whereas the timing belt needs to be replaced at 90,000 miles.
Normally no, it should last the life of the engine and is replaced during a complete overhaul.
Yes, most do and they must be replaced every 90,000 miles.
The 3.3 L V6, 4.7 L & 4.8 L V8 all have a timing belt that must be replaced every 90,000 miles.
The 1991 Lexus ls400 has a timing belt.
There is a timing belt on the Lexus ES300 2003.
The 3.5 liter V6 engine in a 2007 Lexus RX350 has a timing CHAIN
I just replaced the timing belt on a 2003 Lexus ES300 at the Toyota dealership and paid hundreds less than what the Lexus dealership or other shops I got quotes from wanted. It was less than $400.00 for the timing belt only... I had them check the water pump which the other quotes included in their estimates and which I couldn't afford at this time. If the serpentine belt would have needed replaced, it would have been an additional $40.00. This was in Centennial, Colorado (close to Denver).
The 3.0 litre V6 engine in a 2000 Lexus ES300 has a timing BELT
Lexus manufacturer recommend replace timing belt on Lexus rx300 every 105,000 miles.
The Gates website ( they make timing belts etc. ) shows the timing belt should be changed at 60,000 mile intervals on a 1993 Lexus ls400
Definitely a timing chain.