My 2021 Mercury 250 Pro XS Trim will raise itself when I turn on the power. It will also do it when I'm on the water and I have to keep watch and trim it back down. I want to start by replacing the Trim relays, but I cant find them. I was told that they are at the back of the motor, 2 relays for the trim and 3 relays for the starter. If anyone has a picture, I'd appreciate it, or an easy explanation would be helpful. Thanks
You may want to check all the trim switches on your boat first.
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more likely a switch than a relay but check them all makes sense
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I had same issue with my 250 pro xs as well. I checked all the trim switches and the one on the bow had some corrosion. I cleaned it and added some dielectric grease and the problem fixed itself. I took it in to my merc tech after and he said relay was good so must have been that switch.Originally Posted by alli ss
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Trim relays are located under the Starboard side air runners.
Definitely need to rule out switch problems FIRST.
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