2006 flying spur. a/c going crazy, its cools fin but fan control is all over the place, radio stays on after car is off, dome lights go in and old while driving, radio works fine, a/c control screen is not working, also trunk release will not open from inside but will with fob, I THINK THE BLOWER RESISTER IS INTERFERING WITH ALL OF THIS. BUT WHAT DO YOU KNOW. DO I NEED THE BENHUR UNIT