This is a serious health issue for whomever is in the vehicle. We have not used it much only if needed. Garages cannot find problem? It was at one garage for 3 weeks and they still could not find the problem. They told us nothing was showing up on their tester. So we have a vehicle that we do not dare to use because of the loss of power driving on the highway or even in light traffic. We still owe $3,000 on the sitting vehicle.