Searching for an independent shop to service my brides E500 4matic wagon, 2005 in the Salt Lake area. Any ideas appreciated

Car is a winter highway joy, a bit heavy for town stuff but drive it and its rewarding. Issue is the drive to workshop dash alert with the shape of a wagon and an up arrow. Never used to show now it comes on every other day. We've been thru the rear airbags and a 2 or 3 of the struts. 115K Thanks