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Not sure. Never had a cooling issue, fan came on sometimes, but I’m in Canada at 46.25 N lat, it gets hot here in summer but maybe 30C for a few days, then cools off. Electrical maybe in winter when putting load on winch when plotting. Very confused and disappointed.Something is really weird in your circumstance it would really bug me why three motors went South? My dirt dog personally would I would have to hold on to it until I figured it out , or just take my loss and keep on walking. Just really weird, we have a lot of P5's around here with a lot of miles on them and no issues with the motors? Thinking cooling/electrical issues?