03 Explorer - Battery Draining

[Pedar]

My 03 Explorer battery seems to be discharging on its own. I replaced the original battery and then replaced the replacement less than a year later but I am still having problems. The alternator is charging at 13.9. The only thing on my vehicle that isn't stock is a remote starter. I have wondered if the remote starter is causing my battery discharge since on occasion I have heard the door locks lock when the vehicle is parked without me pressing the remote. I don't want to remove/replace the remote start without being sure it will fix the problem. If I have my interior light on for a half hour or so while loading the vehicle, it won't start. A buddy with an 02 Explorer told me that he runs into the same issue when leaving a door open while loading.

Are there any known issues that would cause my battery to drain, or should I blame my remote starter?

 

[merc187]

I am not sure about the 02 but I know on my 03 it shuts the lights off after a certain amount of time so it does not kill the battery. I think it is 60 minutes. It sounds like the issue I had in my old 98 with the alternator. My connections were bad and the alternator was not charging the battery. Something to check out if you haven't already.

 

[scottrappley]

I have an 03 also. Did you ever find out what the problem was causing the drain? I seem to be having a drain also. Thanks.