Jeep won't start

A dying (but not completely dead) battery will do just this - it has enough juice to engage the starter solenoid or radio and some lights but not enough to turn the engine over. Get a jump start. If you can pull the battery take it to a parts store and let them check it, however if it's low/dead they'll have to keep it for a few hours to charge it before they can test it.

2002 jeep liberty wont crank everything in the inside is working brand new battery and my alternator is good what elss could be causing thos problem i do have codes