I'm at my local dealership for my recall appointment. I spoke with the service writer here about what exactly will be done. I noted part of the paragraph describing "What will your DEALER DO?" After describing replacement of the rear insulation mat, the last sentence in the paragraph reads "As a matter of normal service process, an authorized smart dealer will also check for other repair measures which might be applicable to your vehicle and this may increase the required working time." I asked if that included the diagnostic which would show, for instance, outstanding transmission firmware "measures which might be applicable to my vehicle"? He said a diagnostic would cost $175, which would include any applicable firmware updates. My recall letter says a check will be done. The verbage boldly reads "This service will be provided free of charge". Can my dealer fully and competently check for other repair measures while NOT running a diagnostic? Or may they simply visually glance around, and note only repair concerns observed visually? I suggested an included diagnostic would be an appreciated, good-will gesture, he countered that even if he ran the diagnostic, he'd have to charge me $175 to apply any firmware update. What are the experiences of others on this included "check for other repair measures" ?? BTW, I called the Mercedes Customer Service toll-free # 800-367-6372 several times from the waiting area, get Voicemail, LOL.