Hi, I've read it in a number of places on this forum about the bad SBC and its under extended warranty replacement by the MB delaer. I am getting the "Brake Service - Visit Workshop" warning but the brake pads, rotors, sensors etc. have been replaced only 2 weeks ago. I took the car into a MB Dealership and they wanted to troubleshoot a short wiring issue and wanted me to pay for a 3 hour diagnostic. I didn't do that and came back to my local mechanic and he checked the whole thing once again, replaced the brake switch, checked for any wiring disconnects and everything was fine. The MB dealer told me that it 'could' be the SBC but we aren't sure, it could be anything.... the usual BS that you get from a dealer (with due respect!!).
My question is: how do I convince the dealer to repalce the SBC without getting dinged for a 3 hour diag charge

? Any/all suggestions welcome. Thank you.