NHTSA Complaint #11467959 — 2006 MERCEDES BENZ ML350

Since my significant others and I purchased this 2006 Mercedes Benz SUV - ML-350, over three months ago, we were wondering why the "Engine check light was always on" so we purchased (4) sensors and replaced the sensors of where OBD tests pointed out for the engine, deleted the Engine Check Light several times but it will go back on after we driven it for another 50 to 100 miles away to normal highways and freeways driving to relearn the computer system and the Check Engine Light On again and again but not blinking? We called our friendly mechanics and he said it maybe faults recalled that part of the electronics or maybe the computer is giving that "engine check" light on because it has some safety components is malfunctioning, the braking is also hard and sometimes it is too soft when I push it with my right foot to stop the car and also the car is using too much gas. So, we kept postponement of bringing this car to the dealership for repairs because we cannot afford the repairs. Then today, I check to my email and I see the Recall email from NHTSA about MB - ML-350 / recall number 2022050015 / NHTSA # 22V315, since we cannot smog check it because of the "Engine Check On" it is always on we were puzzled why this light and this car cost too much to use and sometimes hard and sometimes soft to push on it's braking power? Please let us know on what to do next? Shall we call the MB-Dealerships to tow this car to their shop because we have stop using this car about over (3) months ago since we bought it ? Braking System is sometimes is too hard and sometimes too soft and using too much gas and the "Engine Check is always On " even we have replaced the (4) electronic sensors that the OBD machine pointed out but is still doing the same thing. Please advise us of what to do to resolve these operational safety of our 2006 - ML-350 Mercedes Benz, it is stored in our car garage. The rear reverse camera also stops working and it is saying braking lights are not functioning?