When should a serpentine belt be replaced on 2009 tacoma?

The serpentine belt on a 2009 Toyota Tacoma should typically be replaced every 60,000 to 100,000 miles, or as recommended in the owner's manual. Signs that it needs replacement include cracks, fraying, or a squeaking noise while the engine is running. It's also advisable to inspect the belt regularly for wear and to replace it if any signs of damage are present, even if the mileage is within the recommended range.