Check Engine Light On problems of the 2016 Mercedes Benz C300

Check engine light appeared on dash at approximately 72k miles. Had code read and diagnosed by certified mechanic and he had an active code p06da00(this code signifies an electrical fault, open circuit, or high resistance in the circuit for the oil pump control valve on vehicles with two stage oil pump, which can lead to incorrect oil pressure, which can cause engine damage if not addressed). Vehicle was taken to harriman mercedes in new york. They did not acknowledge an active code but wanted to diagnose and repair a stored code for a small evap leak, which was rectified with a new gas cap. After prying about the p06da00 code, they finally admitted it did have a stored code but to ignore it because it had something to do with domestic and foreign car engine computers issues. How do you ignore an active code with a potentially serious engine issue and told to ignore it. I know for a fact that this is a common problem with these 2. 0l engines in these cars for many years.

2016 C300 4matic at about 50k miles, check engine light came on and then as I was driving on the freeway the car just stopped accelerating in the middle of the freeway and had to take my car to the side and towed it to the dealer in west covina. Luckily there was no one on the freeway since it was early Sunday morning. Dealer is now saying the car might need engine replacement which will cost me $20k but they want $3000 to do a tear down to make sure. Opened a case with their customer service but they said they can't do anything about it since the car is out of warranty. I am incredibly upset with Mercedes Benz - I have not used the car that much and maintained it myself according to their maintenance booklets. I believe this is an engine defect problem that mercedes needs to take care of.