This is the most critical maintenance item. The 3UZ-FE engine is an interference engine; if the belt snaps, the engine is destroyed. It should be replaced every 90,000 miles or 9 years.
Older models (2002–2004) used analog systems that no longer function. Many owners replace the entire head unit with modern Apple CarPlay/Android Auto systems. buy lexus sc430
These "refresh" years are most desirable. They feature a 6-speed automatic transmission (replacing the 5-speed), updated headlights/taillights, and revised suspension for a smoother ride. 2002 LEXUS SC430 for sale with 90,308 miles ... - Facebook This is the most critical maintenance item