Recently my door lock has been sticking when I try to use either the keyfob or the in cabin button. I have to turn the lock with my hand or use the key and put it in the door.

Could this have been caused from

A. The heat? I have been parking my car outside recently and its been pretty hot in CO. My car said 104 the other day when I got in...

B. Old age? Car is an 04 coupe with 115,xxx miles.

C. ???

I'm hoping it'll just fix itself like my window thingy did (kept going up then halfway down)

Anyone else have this problem?

 

The lock actuators on the coupes are notorious for going out at random times. Sounds like it's time for you to replace it. It's not a hard DIY and IIRC you can get replacements at AutoZone that have a lifetime warranty.