Won't lower.
Had that problem with ours. For some reason it needs power to go down. Had to bypass the inline fuse from the battery to the 12 vold system by using a screwdriver to make the contact between the two posts on it. According to the mamual some of them have a reset button, ours did not, but the screw driver worked. Sometimes a weak battery will do that too if the converter is not charging the battery. Since yours does go up a little neither may be the issue with yours. In our case the electric hitch would not operate either.
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