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Old 05-09-2021, 06:54 PM #1
gordonf gordonf is offline
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[2020-2021 only] Rattle of relay box under the hood
So today on the trail I noticed rattle sound from front-left part of the vehicle.
I realized that relay box (red square) is sitting loose in it's housing and it is easy to reproduce rattle with just hand.
Do you have this issue in your own vehicle? Is this box sitting loose or firm?
Not a big deal to put some sealant there but want to make sure it is common and not specific to my 4R (in this case I'll go to dealership)
Thanks!
Last edited by gordonf; 05-09-2021 at 09:25 PM.
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Old 05-09-2021, 09:24 PM #2
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OK, few layers of insulating tape around metal brackets did the trick and box is now sitting death silent.
But IMO this is not level of Toyota, I expected more accuracy from them.
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Old 02-22-2024, 05:07 PM #3
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Originally Posted by gordonf View Post
OK, few layers of insulating tape around metal brackets did the trick and box is now sitting death silent.
But IMO this is not level of Toyota, I expected more accuracy from them.
I realize this post is 2.5 years old…. But I didn’t see any other threads on the topic. I’ve been chasing down a popping/intermittent rattle and I found my relay box is also very loose in its metal bracket. ‘21 Nightshade. I’m not sure this is the actual sound I’m hearing (yet), but it needs to be addressed.

The metal bracket to body is solid. The plastic lid to plastic box is loose as well as the plastic box to metal bracket. Basically the plastic snap/clips are a loose fit.

Any pics of where you placed the insulating tape?
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Old 02-22-2024, 07:37 PM #4
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Remove platic box frommetal housing (bracket) completely, then wrap metal brackets (left and right) with solid amount of vinyl tape, put box back into bracket, it should sit tight
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Old 02-23-2024, 02:07 AM #5
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Originally Posted by gordonf View Post
Remove platic box frommetal housing (bracket) completely, then wrap metal brackets (left and right) with solid amount of vinyl tape, put box back into bracket, it should sit tight
Thank you. Will give it a go tomorrow. I’ll figure out something for the plastic lid to box.
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