Is occasional sloshing sound normal when heat is on?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by HogMedia, Oct 20, 2022.

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  1. HogMedia

    HogMedia Junior Member

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    I noticed when I turned the heat on my 2013 Prius so I could sleep in it that there is this occasional sloshing liquidy sound coming from seemingly around the dash. Is this something I should be worried about?
     
    #1 HogMedia, Oct 20, 2022
  2. ChapmanF

    ChapmanF Senior Member

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    There could be some air in the cooling system. What level do you see in the engine coolant reservoir? Has the coolant ever been changed?
     
    #2 ChapmanF, Oct 20, 2022
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