How do you unlock the trunk when there's something wrong with pushing on all doors to open? I've had it since 2008 and never had a problem until now.

No key cylinder on outside of hatch anyplace for key operation? Do you have the original key fob for the car? If so, have you tried that by standing at the rear and pressing the unlock button 2 or 3 times to see if you hear the actuator motor clicking? If no key cylinder on outside, or no clicking from tailgate when pressing the key fob buttons or switch on door, first check the fuse panels in the dashboard and the engine compartment for a second fuse and relay. Most cars only have one but some may have two. If you find a second one, swap the fuse and/or relay from the first one to the second one and then try the switch again. If that still doesn't work, it sounds like the electrical connector from the wire to the actuator motor may have disconnected inside the hatch. Also, have you had someone else help you by pressing the switch or key fob buttons while you try pushing and pulling on the tailgate while trying to unlock it, in case it is just stuck? If none of the above work, your only recourse is to remove the plastic panel on the inside of the hatch from the inside by first removing any accessible screws/bolts usually hidden under little plastic pry-out caps, then prying the panel off the tailgate (as opposed to doing it with the hatch open, which will NOT be easy, and may cause the panel to crack or some of the clips to break), but it can be done. Once the panel is off, you can reach in and unlock the hatch by hand by moving the parts where the rods/cables connect to the latch & lock mechanism. Just so you know, some of these panels have plastic clips or phillips screws at the bottom edge which you will not have access to while the hatch is closed, so you may have to remove all accessible screws then pull the panel up and inwards to sort of peel it down towards the floor. Once you get it unlocked, you can open the hatch and check the connector to see if it came off the actuator or is loose. If it is attached securely, your actuator may be burned out and need to be replaced. Please keep me posted as to how this works out for you, or if I can clarify anything or be of further help.