Many issues

What is your question?

My driver side door won't lock nor open if I try to lock or unlock it from inside withbunlock button from the door. And my remote for the remote-start is not working. How can I get another remote? How much does it cost? Is anyone know the best seller/stores that sells oem cat converter for 1998 Toyota camry v6? My trac control light stays on. I tried to off it fron the control button but doesn't off. Iit was on beforeni have my rotors and brake pads changed.. what can cause this?