Mercedes-Benz S500 Questions

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Day Z fan does not blow on my car it was just fine until a just all of a sudden stopped fuses are not burned out seemed like
I replaced the contact plate as recommended by several you tube videos but the problem is still there. Do I need to clear the error codes?
I also have a passenger door that nothing of the electrical items work. I replaced the DCM to no avail.
Ohhh, if I could turn back time. I had my car serviced, battery disconnected and then tried to get my car Smogged. Passed emissions perfectly but failed 5 of the monitor reset tests (including: Catalyst, EVAP, secondary air system, oxygen sensor, oxygen sensor heater).

I'm in LA and completing these Drive Cycle tests is difficult. I've tried 3 times now and can't get any of the monitors to clear. Purchased a handheld diagnostic reader and am failing at every attempt.

Question: Do shops offer a "Drive Cycle Reset" service? If so, what can I expect to pay for it?

Thank you! I'm desperate and a little concerned I might not ever get my car cleared.

I have a Mercdes Benz S350,W221. M272 Engine with misfiring fault code on one bank.
These are:
P0304 Misfiring Damage on Cylinder 4 TWC Damage
P0305 Misfiring Damage on cylinder 5 TWC damage
P0306 misfring damage on cylinder 6 TWC Dmage.
P0300 Multiple cylinder misfire.
I have swapped / exchanged the spark plugs, the coils, the injection nozzles and the Oxygen sensors.but the problem still remains
I observed that the Spark plugs of cylinder 4,5 and 6 are black with soot and the exhaust brings out black smoke occasionally and the engine vibrates seriously.
I want to find out if the any other thing i need to do, to solve this problem
Trunk and door locks not working
Where is the fuel pump located
the dashboard lights wont work. the radio is asking for a code now and my right rear brake light went off as well. the brake light work when u press on it but all 3 turn off once your foot is off
My dashboard shows Pre-Save Inactive See Operator Manual. How do I check this out.
My Car shakes when starting and running...slow then picks up on the go, and then shakes again. Today the car engine would turn when I turn the car on, but car would not start.
Shaking of car has been going on for a while.
The car not starting was just today.
all not working. flood care 2000 s500
My 1999 S500 shuts off intermittently. OTC Encore has no codes showing up. Replaced Cam and crank sensors. replaced fuel regulator. I am suspecting a voltage problem. My 2000 is doing the same thing.
Cracked air line need to replace on a 2oo5 Mercedes Benz s 500
I have switch the brake light switch and still have this issue, I have also unplugged the brake light switch component and brake lights are still on. Also the s500 is not to start on the first press of the push start but it does. It seems the system thinks the brake is being pressed.
How long have you had this problem? months

What seems to make the problem better or worse? Just happened. Can I still drive the car? Can I reset something to make it go away?
had initial problem with ac blowing hot air, compressor would not engage. fan was working car did not overheat, no other problems. replaced, ac to condenser hose, compressor, drier water pump and condenser fan assembly. got evac and recharge.
car still blows hot air, compressor does not engage, fan does not work, car overheats. what are possible causes?
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