2012 Dodge Caliber SXT - Does anyone know if you have to relearn a crankshaft sensor to have the car work properly again. I am installing my new sensor tomorrow and wanted to ensure it was being done correctly. I am learning how to work on my vehicle and was told first to disconnect the battery, remove the heat shield and install the new one but I know with many sensors you have to relearn it so wanted to check before starting the process. If so what system or program is needed? I don't want to damage anything.