Sounds like you went through exactly what I did and the dealers in my area were the exact same way as well. Got rid of mine with 101,000. Gremlins coming out of all corners. I had to replace one air strut probably at 75,000 miles. Who knows to this date why it even failed but the part along was $1,600. Figured it might just have been a fluke and fixed it but more issues started to show.
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