So I turn it on and on start it sounds like a grinding screach. Heavy vibrations I can still drive it and it sounds less bad while moving but when you put the clutch in the vibrations start again. So I try and turn it off. The mother f/er doesnt turn off it just keeps vibrating and shaking. So now im turning it on hearing that dreadful screaching on start and off again and it wont turn off. After about 5 times on and off I got it to stop. I dont know what just happened I fear its very bad. It cant be the clutch beacuse I could still engage it and move the car. I checked inside the bay all looks good there. Has anyone ever had their c5 not turn off and shake.