Quick update with two new items:
After my sanity has returned I thought I'd give my trusty independent repair shop (Import Motor Werks
in Cary, NC) a call. They said they could do the evap core for quite a bit less than the dealer quote...like $2,000 less. That's a high-side estimate since it depends on how much the parts cost. Naturally labor is still the larger part of this repair but IMW's labor rates aren't bad.
I'm retired now and a trip to Cary is an hour and a half of pleasant driving on NC 64. So sometime next week I'm going to pop over and have them give it a look.
I was under the hood of the M5 tonight to check the oil (it's used about 1.25L in a little over 5,500 miles) and found out that the dealer flat out lost
one of the AC parts (the cap for the AC service port
). It's a ten buck part but still.
Worse, they broke both
of the cabin air filter connections...p/n 64318379620
for the right one. The left one is a slightly different p/n but same price. So over $200 in parts thanks to some clumsy oaf.
I'm going to have a nice chat with the service manager tomorrow.