2007 Toyota Camry Hybrid Engine Relay Clicking Noise?

My 2007 Toyota Camry Hybrid started making a clicking noise which I have identified as coming from a relay box found on the passenger side of the engine compartment. It makes the noise when ever I open the driver's side door with key-less remote in my pocket (engine not on and car not being turned on for several hours, though length of time does not matter). It also makes the noise for a couple minutes after the car is turned off and while the car is being driven, but in electric mode. Any help with identifying what this problem is greatly appreciated.