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Hello, along with this problem have you noticed anything like a door ajar light on when doors are closed? or maybe had dome lights stay on/ I ask that because the most common reason for this is one of the door ajar switchs sticking. A good place to start would be lubricating your door latchs and key holes. If it still is doing it, we will need a good scan tool to diagnose.
Also your key fob make sure it has a fresh duracell battery and take it apart and make sure it is clean and dry.
No but here is what you can do remove both your positive and negative battery cables and clamp them together while they are clamped together cycle your key through all positions and then back to off now rehook your positive cable first then negative, what this does is drain the memory out of every module forcing a reboot of the system