Removing it could be a small headache in itself, depending on how bad the installer hacked up the harness. Leaving it alone could cause a problem the first time you go to replace the battery since you don't have a remote to disarm the system. The LED pulls nearly no power so it won't drain the battery any noticeable amount. You might try going to a place like Mobile Audio or another place that services remote start systems and see if you could get a remote.