4th Gen Tacoma Serpentine Belt Replacement

Serpentine Belt Replacement: 4th Gen Tacoma

The serpentine belt on the 4th gen Tacoma drives the alternator, A/C compressor, and water pump. Toyota recommends inspection every 60,000 miles and replacement as needed.

Symptoms of a Worn Belt

• Squealing noise on cold start or during acceleration
• Visible cracking, fraying, or glazing on the belt surface
• A/C performance decreasing
• Battery not charging properly

Replacement Steps

1. Locate the belt routing diagram on the fan shroud or radiator support
2. Take a photo of the current routing before removal
3. Use a 14mm wrench or socket on the tensioner pulley to release tension
4. Slide the old belt off the pulleys
5. Route the new belt according to the diagram, leaving the tensioner for last
6. Release the tensioner slowly to apply pressure to the new belt
7. Start the engine and verify the belt tracks correctly on all pulleys

Tip: While the belt is off, spin each pulley by hand and listen for bearing noise. Replace any noisy idler pulleys at the same time.