tigerken

I just bought an 05 RL and trying to debug a few electrical issues. So far I have noticed the following, The gas cap door will release every so often, Usually 1-2 times a day. Haven't noticed anything that seems to trigger this. Rear window defrost doesn't work. VSA sensor error, Both rear windows will not work, The smaller text display screen above the navigation screen will turn itself off and on every now and then. Disc reading error for navigation error. temperature sensor isn't working. I assume that some of these could be stand alone issues but wanted to see if anyone had any specific ideas on what to check first if these could be related? I am going to check fuses, but I'm assuming it is more than just that. Thanks for any help or information that you might have