Hi,
It could be a few different things. Because of how new the vehicle is, it could be a breakdown in the CAN bus system. It could be related to the ECU, the control assembly, a short, and do on.
Here is what I suggest. We need to have the CAN bus system scanned to see if there are any diagnostic trouble codes. CAN stands for controller area network. Basically, all the different modules/computers are tied together via a few wires. By scanning the CAN, it may indicate where the problem is coming from.
Here is a quick video showing it being done. Note that by doing this, you are checking for codes at all modules and not just the powertrain.
https://youtu.be/InIlnsjOVFA
This is where I recommend starting because without some specific direction of possible issues, it will become a guessing game and that always leads to money spent on things that aren't needed.
Take care and let me know what you find.
Joe
Monday, May 24th, 2021 AT 7:10 PM
(Merged)