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A hum in the night
I was in my garage late last night, all was quiet, I heard a humming sound coming from underneath my 08 Sport. Something was running, either a small motor or pump. The sound was the loudest from the rear / driver's side and turned off after 1-2 minutes, but I don't know when it started. The Highlander was cold and hadn't been touched for at least 24 hours. Anybody have any idea what this might have been? My best guess would be the fuel pump based on the location but I have never would have never guessed that a fuel pump would automatically turn on like this.
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