8 months ago the roof packed up. Not a huge issue, I know these inside out. Identified the faulty limit switch, same one I’ve replaced on sooo many customer cars over the years. £104 for a new one. Oh no. Big problem. The part is no longer available from Mercedes!! I’ve scoured loads of online parts places to no avail. Finally one came up for sale last week for £180. Bought, fitted, fixed, just in time for summer!! Hurrah!!!