Hello All,
Just bought my 2008 Edge Limited 6 days ago with 12,500 miles. I too have the high pitch whine. It has nothing to do with the radio, driving, or A/C. It doesn't matter if its cold or not. It's 90deg. here in Texas! No word from Dealers...other than "live with it?" I hate to take mine back for the same response.
Regards,
Sloney