Weird humming noise around 15-30mph
I have a 2007 HCH with almost 2000 miles on it.
When I got in it this evening, I noticed a noise that wasn't there before. It's similar to the electric hum I hear normally when going up a big hill, but it's higher pitched and more noticeable. I don't hear it going below 15mph, or I can accelerate through it and it goes away around 30 or 40mph. But in that range, I hear it when I'm both accelerating and braking (it stops when I take my foot of all pedals). Turning off the A/C and radio makes no difference, and the battery has 5 bars of charge, so I don't know what it could be.
Any ideas what this is?
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