The most likely cause for this is that a fuse has blown and you need to replace a fuse. Check the fuse box, located on the drivers side under the instrument panel.
Based on your description, I would check fuse 17 first. Fuse 17 controls various accessories. It should be in the middle column, second from the top. It should be a 15 Amp fuse.
There is a fuse puller tool in the fuse box that will make removing fuses easier, remove fuse 17 and check if it has burnt out using a multimeter, or by checking to see if the metal strip in the middle of the fuse (inside the plastic) has burnt through/is disconnected. If so, replace the fuse with another 15 Amp fuse.
If fuse 17 is still okay, it is possible that other fuses have blown, though the likelihood of multiple fuses blowing is uncommon. The radio runs through fuse 3, climate control through fuse 16, and the instrument cluster through fuse 21.
If all the fuses check out okay, it is also possible that you have a bad relay. There are relays located at the top side of the fuse panel, and relay 3 controls various accessories as well.
If neither of these proves to be the problem, then your vehicle may have a wider problem with its electrical system and may need to be taken in for repairs.