Last week noticed an oil leak and a dtc for cluster not programmed, oil sensor, and transmission something. Before I could research those they cleared up, vanished and now I have these Car Scanner ELM OBD2
DTC report
Selected brand: Mercedes-Benz
VIN: WDBTK56F07T086790

============1==============
P0633
Raw code: 0633
ECU: Engine control unit
Status: Pending fault present, Validated and stored in non volatile memory, Validated fault present at time of request, Validated fault has been present during this drive cycle
OBDII: Immobilizer key not programmed - ECM/PCM

============2==============
P0629
Raw code: 0629
ECU: Engine control unit
Status: Pending fault present, Validated and stored in non volatile memory, Validated fault present at time of request, Validated fault has been present during this drive cycle
OBDII: Fuel pump (FP) control - circuit high

============3==============
P2069
Raw code: 2069
ECU: Engine control unit
Status: Pending fault present, Validated and stored in non volatile memory, Validated fault present at time of request, Validated fault has been present during this drive cycle
OBDII: Fuel gauge tank sensor B - circuit intermittent

============4==============
P0301
Raw code: 0301
ECU: Engine control unit
Status: Pending
OBDII: Cylinder 1 - misfire detected

============5==============
P0073
Raw code: 0073
ECU: Engine control unit
Status: Pending
OBDII: Outside air temperature sensor - high input

============6==============
P0301
Raw code: 0301
ECU: Engine control unit
Status: Confirmed
OBDII: Cylinder 1 - misfire detected

============7==============
P0073
Raw code: 0073
ECU: Engine control unit
Status: Confirmed
OBDII: Outside air temperature sensor - high input

ok I have replaced the fuel pump and sending unit. Cleared those codes they just come back. My key that supposably is not programmed locks unlocked and starts the car no problem, dtc wont go away. I've read probably every post on all the forums and tried everything that has worked for everyone else and I can't get rid of the misfire. Swapped coil packs, new spark plugs sprayed carb cleaner on vacuum lines, picked my nose. None of it makes sense to me because the car is misfiring, I turn it off restart it and runs perfect for roughly 57 seconds then check engine light turns solid, 14 seconds later starts flashing ,3 flashes later the car develops the misfire. Any help on where to start or what to do would be appreciated. I've built all kinds of vehicles and install anything After market 12 volt related for a living spend my free time in a shop that hand makes custom competition speakers and subwoofers. I'm definitely not smart but I comprehend like a motherXer. But also I've never felt with anything like a mercedes. So have no clue what to do besides tear it down replace everything and be done with it. Any help would be greatly appreciated

 

did you manage to sort this out??