I would start with checking fuses... however you likely have a door lock actuator or a door jam switch that is failed or failing.
See if all the doors lock and unlock with the remote lock - if one doesn*t that is the one with the culprit actuator. If they all work than you are likely looking at a door jam switch, it may have failed completely or may just have bad contacts.
Definitely try fuses first and than do some investigative work to narrow it down. If the car thinks your door is open it may keep various systems awake when the car is off and can drain your battery - so I*d get it looked at sooner rather than later, and in the meantime switch your dome light to stay off all the time.
180 Degrees Automotive
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〉 Answered on Mar 11th, 2009 by Bogi Lateiner, Owner and Technician at 180 Degrees Automotive