First and foremost, in the event of a problem occurrence, it is required to diagnose whether the failure is electrical, mechanical or hydraulic one to consider any repair work. Diagnosis of the transaxle involves understanding how it works and how it is made and this needs information and equipment that is unique to the transaxle. Because of these considerations, diagnosis and repair of the transaxle itself is beyond the scope of general advice; it is strongly advised that any problems with the automatic transaxle should be referred to a dealer or another competent service center. Also a bad transaxle should not be pulled out until the car has been checked with a professional mechanic armed with tools and knowledge, this is so because troubleshooting is done with the transaxle still in the car.