MService Action: Replace Wheel Bolt Wrench. The internal thread of the wheel bolt wrench is incorrect at M8. AFFECTED VEHICLES This Service Action involves F56 vehicles according to VIN selection. First check if a Service Action label with a code number 64 is already attached to the B-pillar. If a code number 64 has been punched out, the Campaign has already been performed and no further action is necessary. Vehicles which require this Service Action to be completed will show it as "Open" when checked either in the "Service Menu" of DCSnet (Dealer Communication System) or with the Key Reader.