Not a serviceable item sadly, it will as mentioned only get worse and in some cases keep the kessy module awake and suck the battery down overnight.
They are the same handles with the drivers one having a different part number because its had a plug hole removed for the key barrel.
Personally if your getting one done, buy another or 4 so you have them in stock already painted.
Since I have owned mine all four have been replaced and I have another spare for the inevitable failure of one.
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