Belts and hoses are usually included as an inspection item, checked periodically for wear, cracking or leaks.
Drive belts and coolant hoses degrade over time from heat cycling and use. Most schedules call for periodic visual inspection rather than a fixed replacement interval, since condition varies by vehicle age and use.
Some manufacturers do specify a fixed replacement interval for certain belts, such as a timing belt where applicable, separate from the general inspection items.
The relevant inspection or replacement points for your vehicle are shown on its published schedule.
This page explains the service in general terms. It does not state a mileage or time interval, because the correct interval depends on your vehicle's manufacturer, model, year and configuration.
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