Error fault Motor control lamp undervoltage

Hello together, I always have the same problems with my T-Cross Active that always concerns the engine control light. The car was read out several times in the workshop with control unit and parts replacement. The car always goes into the undervoltage. Lt. VW or statement from my car dealership there is no solution to get the problem under control. It is only the question until the error occurs again. For such a car which sometimes costs slightly over 25000 Euro, it can nevertheless It’s not that there are mistakes that cannot be solved by VW. As a VW customer, you’re really being made by them. Do you have similar experiences?? Actually, you can only warn any potential car buyer to buy a car from the xx group. I also know a T-Cross driver with the special United model. In about the same error picture. Engine control light error undervoltage. Only what is more noticeable is that the safety systems nic ht work like Lane Assist, front camera etc. How are your experiences? Is something like this also known here?