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A failing wheel bearing on your Toyota 4Runner can cause a loud humming or grinding noise that gets worse with speed, indicating it's time for a replacement. This DIY guide will walk you through the process, saving you $300-$500 compared to a shop cost of $500-$800, and with moderate mechanical skills, you can tackle this job in a few hours. DIY Cost: $80-$150 | Shop Cost: $500-$800
Innova operates one of the world's largest automotive diagnostic databases. It's built on real-world scan data from millions of vehicles on the road, combined with OEM repair information licensed directly from vehicle manufacturers.

A failing wheel bearing on your Toyota 4Runner can cause a loud humming or grinding noise that gets worse with speed, indicating it's time for a replacement. This DIY guide will walk you through the process, saving you $300-$500 compared to a shop cost of $500-$800, and with moderate mechanical skills, you can tackle this job in a few hours. DIY Cost: $80-$150 | Shop Cost: $500-$800
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.