I once had a throttle position sensor (TPS) fail that caused the hybrid warning indicator to show up on the screen. This is a common problem on many modern cars. I did not experience any actual system failure. I wonder do the hidden diagnostic screens give you any more info? I did not know about them when I had the problem with my car.
Sounds like you need to take your car to a different technician.
Aron
Sounds like you need to take your car to a different technician.
Aron
