Vehicle: 2011 Edge SEL w/Sync and dual auto temp control
About a year ago things started going south. First the outside temp sensor stopped working. Read 70 degrees all the time. Messed with the hvac especially if it was actually 10 degrees outside. Shortly thereafter the hvac controls and the ambient lighting started turning on and off very rapidly and constantly. Annoying as hell and the battery will go dead overnight if I don't disconnect it. I'm aware the hvac module controls the ambient lighting. When everything goes on and off I can hear a relay clicking under the dash on the passenger side and another in the junction box under the hood. I like the car a lot but haven't really needed it so it's been parked for a long time. I'd like to use it again this summer and it'll be going into the shop soon to hopefully fix this issue but it's been driving me crazy for a year now. I have access to the wiring diagrams and such online. I'm thinking the hvac module took a dump. Any ideas ?? Thanks in advance.