Q304

Hey guys, I'm having issues with my tire pressure warning light staying on and my keyless entry doesn't work. I've tried all obvious suggestions and came up with that it has to be the reciever. I've read somewhere that they both use the same reciever. Does anyone know the location of it, and will it need to be programmed to work with the ECU and tire sensors? I'm very much a noob to this so Any help will be greatly appreciated.