How to Replace the Serpentine Belt — 2010-2025 Toyota 4Runner

Replacing the serpentine belt on your 2010-2025 Toyota 4Runner is a crucial maintenance task to prevent engine accessory failure, often needed every 60,000-100,000 miles or if you hear squealing or notice cracks on the belt. This DIY repair costs between $20-$50 for parts, compared to $100-$200 at a shop, and with the right tools and guidance, most DIYers can tackle it confidently. DIY Cost: $20-$50 | Shop Cost: $100-$200

You’re done. Clear any stored codes with your scanner and complete a normal drive cycle so the vehicle’s readiness monitors reset.

If the code returns, the root cause likely wasn’t the part you replaced — go back through the diagnostic steps before swapping anything else.