Hello- My A4 will not start when it is below 35 degrees. I receive a message on the panel that states "Press Clutch to Start Car". The car has 18k miles and Audi cannot determine what is wrong with the car. This is the second winter that I have the car, and the second winter I've had this problem. I had the clutch switch replaced last week, but that did not solve the problem. Any insight would be greatly appreciated. I'm at my wits end with this one. Thank you in advance.

ps- There is nothing blocking the clutch from being fully depressed to the floor.