Thanks guys. That's what I would have originally thought too. However, when I press the lock/unlock located on the console, the driver door does not lock or unlock (you can't hear anything either). The other door and gas filler cap lock and unlock just fine.
When I use the button on the key everything locks fine, but it's only when I use the button on the key that I can hear the driver door unlocking but it really doesn't. Could it be a switch malfunctioning?