Have dealt with the same since new (just over 1 year with it) but believe I may have found the culprit...
How many of you experiencing this problem also use Waze for navigation? I switched over to Google Maps a couple months back and have not experienced this problem since then. Still skeptical...
Markup on mine was a package the dealership throws on which covers the battery and keyfob for life, along with the first year or two of maintenance, for ~$1500. MSRP + that +TTL and delivery, I was out the door just under $35K.
Found mine at a local dealer Tuesday morning, worked out financing over the phone, and signed for it that afternoon for $30K before TTL+Delivery. All said and done I was out the door for $35K with no wait at all. Feel like I won the lotto.