Humming noise

Asked by Sonya Apr 10, 2019 at 10:26 PM about the 2018 Toyota Highlander XLE AWD

Question type: General

My 2018 Toyota Highlander is making a humming
noise in the rear after sitting in a garage for over 6
hours.

4 Answers

F_O_R answered 5 years ago

Perhaps the fuel pump is running. Have your dealer listen to it.

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B_R_H answered 4 years ago

I asked Toyota about this. They said it was a common question. It has something to do with a canister that needs to empty so it's completely normal.

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Guru9NNX8G answered 2 years ago

Yes, We have the same issue.. with same year Highlander.. But what is the canister holding, and where is it emptying to? No puddles on the floor, nor noticeable gases in the garage. Toyota USA should be more explicit!!! Kurt kwk324@outlook.com

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