Originally Posted by zip439

P0410 is often rectified with a new RCM. Some of your other problems also sound like RCM problems. Best to get a new one and mail your old one to tighed1@hotmail.com for repair. It will also be an improved RCM than the original.

P0715 and the P0600 can be related as they indicate wiring problems between the transmission and the Transmission Control Module (TCM). P0715 can also be triggered by problems with the transmission conductor plate.

First things first. Check battery voltage for fully charged battery. (Bad/low battery causes all kinds of trouble) If that's okay get a new RCM so we are certain that isn't contributing to the trouble. (Send your old RCM off for repairs) If you still have problems then start trouble shooting P0715. There are several causes to that will trigger the code and you haven't indicated exactly what the DTC refers to. You will find trouble shooting step by step in the service manual available for free for download on the this forum in documents. If you don't want to go that route go straight to replacing the conductor plate and hope for the best. Replacing conductor plate is also the most expensive step to take as you will also need new filter, new gasket and fluid for the transmission.

The heated seats and the Heater A/C fan speed is unrelated to the driveability of your car.