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  1. Illahee Rick
    Post

    2008 Prius Humming when driving downhill

    Thanks ChapmanF. It's just a different (new) sound compared to our 91,000 miles of driving the car since purchasing it in 2008. We have been...
    Post by: Illahee Rick, Dec 15, 2025 in forum: Gen 2 Prius Fuel Economy
  2. Illahee Rick
    Post

    2008 Prius Humming when driving downhill

    NO. This happens in normal Drive mode.
    Post by: Illahee Rick, Dec 12, 2025 in forum: Gen 2 Prius Fuel Economy
  3. Illahee Rick
    Post

    2008 Prius Humming when driving downhill

    Listen to attached "wav" file. The file ext was changed to TXT to allow it to be uploaded. Download and rename to .WAV and listen. It's not...
    Post by: Illahee Rick, Dec 12, 2025 in forum: Gen 2 Prius Fuel Economy
  4. Illahee Rick
    Thread

    2008 Prius Humming when driving downhill

    Our 2008 with 92,000 miles has developed a low level hum when the car is being driven down hills, not always but often. The noise disappears...
    Thread by: Illahee Rick, Dec 7, 2025, 10 replies, in forum: Gen 2 Prius Fuel Economy
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