2011 Audi S5 Cabriolet

I AM THE SOLE OWNER OF A 2011 AUDI S5 CABRIOLET. CHIEF COMPLAINTS: ENGINE PROBLEM,.WARNING LIGHT SHUT DOWN ENGINE,GEARBOX MALFUNCTION,TPMS MALFUNCTION,. TRANSMISSION INTERMITTENTLY SLIPPING AND WOULD NOT GO IN REVERSE,TAKATA AIRBAG NOT CHANGED BY KEYES AUDI COMPLAINT FOR LEMON LAW WITH AUDI CORP. CAR IS INOPERABLE REMAINS IN AUDI DEALERSHIP PENDING OUTCOME PER AUDI CORP.DIAGNOSTIC WORK ORDER REPAIR ESTIMATE,$5, 800. CAR HAD THE ENGINE LIGHT ALERT ON SINCE I BOUGHT IT. DEALSHIPS SAID "IT'S JUST A SENSOR,PROBLEM STILL EXISTS. IN FACT DRIVING ON FREEWAY "DO NOT DRIVE", IMMEDIATELY BROUGHT TO KEYES AUDI.THERMOSTAT IN THE ENGINE.TOLD THE CAR IS NO LONGER IN WARRANTY, HOWEVER FIXED NO CHARGE, "THIS SHOULD NOT HAVE HAPPENED."BROUGHT CAR IN FOR AIRBAG CHANGE AT KEYES AUDI, THE GEARBOX MALFUNCTION, TPMS. WARNINGS WERE ILLUMINATED. TRANSMISSION INTERMITTENTLY SLIPS OR DOESN'T WORK. MY SON TOLD "DO NOT DRIVE THE CAR, THE COMPUTER SYSTEM CAN GO DOWN AND DISABLE THE CAR AS YOU ARE DRIVING" CAR NOT DRIVEN SINCE APRIL. TOWED TO AUDI OF CALABASAS ON MAY 14, 2019, FOR DIAGNOSTIC TESTING TO DETERMINE PROBLEM. TOLD AIRBAG RECALL NEEDS TO BE DONE. SAID IT WAS DONE AT KEYES AUDI. TOLD ON SENSOR CHANGED. ATTACHED IS THEIR REPAIR ESTIMATE OF $5080. CAR HAS 61225 MILES.CAR REMAINS IN AUDI OF CALABASAS AWAITING DECISION FROM AUDI CORPORATE. ORIGINAL PRICE OF CAR $63,530. ALL WORK INVOICES WERE SEND TO AUDI CORP.ATTACHED ARE WORK INVOICES RELATED TO ABOVE COMPLAINTS. THIS CAR IS A HAZARD AND A RIPOFF! I AM A SENIOR CITIZEN AND SHOULD NOT HAVE TO BE IN DANGER OF THIS CAR. YOUR HELP IS NEEDED.