Mercedes-Benz S550 Questions

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I replace the radiator and had to take ac out and now I’m trying to refill the ac but when I go to turn on the ac it won’t turn on it will go back to of in a matter of sencond 2007 s550
The problem was periodic when it started now its just there.
Drivers side front end rattling.
How can this be repaired
I want to use the dash buttons to turn off the AC or heater fan. I can use them to turn on the fan but I can't find a way to turn off the fan except going into settings and scrolling down multiple times to get to climate control on check box.
It feels like the car leans from side to side. I feel like I'm slightly tipping from side to side in my seat. I don't think its an alignment problem. 2008 s550
No power to the car until I put the key in
The radio, satellite, CD player has no sound I have a message showing device and available. The navigation works.
i have front end noise after mechanic replaced shocks,, also the car seems to be sitting higher on front driver side.
The malfunction warning light came on then the left side dropped and won’t raise
I want to know if mileage can lead to increase repairs
It grind it shakes

What seems to make the problem better or worse? hot or cold
How long have you had this problem? a few weeks
front right side is squeaking, sound system stop working
What seems to make the problem better or worse? when im driving over bumpy road
Freon level is adequate ,ambient temperature sensor and in cabin filter has been replaced,problem persists
Problem is intermittent. I installed a new battery afterwards and problems are the same. Sometimes everything works, then none of them work. Windshield wipers and turn signals also don't work.
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