do all civics have keyless entry? Mine had an alarm which I removed because it didn't work but I want to add keyless entry. How would I know find out if it can be done?

2002 civic lx

 

No. It was an option for the LX's. It was only standard equipment on the EX's. More information on what options were available can be found here (from the FAQ's): https://honda-tech.com/forums/honda-...tures-2244923/

The keyless entry module rests below the head unit in the center console, and is attached to it through a subharness.