Low rattle fan noise from rear?!

Proyota

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📛 Founding Member
Aug 9, 2024
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Mukilteo, WA
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2025 Toyota 4Runner TRD Pro
Hello fellow LCers:

Drove me truck this afternoon, cool temps (high-30’s/low-40’s). Truck was parked outside in my driveway, walked by 5 hours later and I could hear a low “rattling fan noise” coming from just behind the drivers side rear wheel. I touched various areas and couldn’t feel a vibration.

Truck was locked. I unlocked and locked it with the fob and the noise went away after a couple seconds. I then started it, fired up straight-away, ran it for a few minutes, shut it off and waited for a few minutes and the noise didn’t return.

Anyone experienced anything like that?
 
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