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Based on what you are saying here, it sounds more like he may have left something unplugged by mistake or possible that he did crimp a wire. I know sometimes also that the wiring to the sensors on the door handle can be disturbed as well. Sometimes there is corrosion in there and the wires getting bumped can cause some issues. He needs to pull the door panel and check the wires for a problem. Since it worked before he was in there, it's a fair bet it's something he did by mistake. We've all been there once or twice!
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