Jeep liberty starter sticking in cold weather

Generally I have seen this happen when water gets into the starter and freezes overnight. When you first try to start it, the starter won't work correctly but heat generated while it's stuck will quickly melt the ice and then it works. Only way I know of to eliminate it is to remove the starter and use grease on all the moving parts that connect the solenoid to the starter Bendix drive. Not sure why, but it seems to happen on some starters but not all, even on identical vehicles. I have corrected the problem on many customers cars by greasing but have left mine alone and actually never had a problem other than the initial "being stuck" in the AM. If your starter is very old, you could replace it but that is up to you.