Trunk Release mechanism replacement

I suddenly can't open my trunk with either the fob or the dash button. When I hit the button, I don't hear anything like I used to. I am just wondering if I need to look under the dash for a relay or something or just remove the rear seats to get into the trunk and replace the mechanism. Any advice appreciated.

Going to update my own post in case others have this same trouble. I was able to get the the trunk latch to operate by hitting the trunk in the general vicinity of the latch while pressing the key fob. I then cleaned the electrical connection with contact cleaner and now the trunk release works better than ever. I think this also solved a random frustration I had where the trunk latch would actuate, but not release. I could get it release eventually but it was really annoying. Now that I have cleaned the contacts, the release sounds stronger and works 100% of the time. So I think a weak electrical connection (caused by oxidation) had been a problem all along.