Mercedes-Benz C300 engine shuts off while driving, fuse number 7 blows and OBD not reading on Mercedes-Benz C300

Some Mercedes-Benz C300 owners report experiencing issues such as the engine shutting off while driving, blowing fuse number 7, and the OBD not reading. These problems may be linked to a faulty fuel pump, which can cause the engine to stall unexpectedly. Additionally, a failure of the crankcase ventilation valve, indicated by error code P052E, has been reported to contribute to engine shutdowns. Owners also note that blowing fuse number 7 could signal an underlying electrical issue, potentially involving the fuel pump relay or other components. Furthermore, some owners face communication problems with the OBD system, which may stem from a faulty OBD port or wiring. It is essential for owners experiencing these issues to have their vehicles inspected by a qualified mechanic or at a Mercedes-Benz dealership to ensure safety and prevent further damage.