From the model year 2001 to 2023, the Toyota Highlander has various engines with either a timing belt or a timing chain. It also has both interference and non-interference engines. Scroll down to see specific data for your model year below. The timing belt (or chain) maintains the proper synchronization between the various engine components in
Check/adjust valve clearance (except for vehicles with auto-lash adjusters). 16. Replace timing belt (including timing belt B for 4D56 engine) every 60,000 to 80,000 km (recommended). 17. Check and clean EDR system, EGR valve, and intake manifold every 15,000 km. 18.
The chain is designed to last the life of the car. As long as the oil is kept clean and replaced every 12,000 miles or 12 months (whichever comes first) it should be fine. Given the age of the car, it would be wise to have the chain checked at the next service. Damaged or worn chains usually make a rattling noise when they are problematic. We recommend an oil change every 6 months or 5,000 miles, if you follow this maintenance schedule the timing chain can last the lifetime of the vehicle. Performing an oil change is far cheaper than timing chain replacement or engine repairs. Engine replacement can run between $5000-$8000 depending on what repairs are done. sCoe1S.