One of the reasons I like the old fashioned wired dual portable controller; fewer things to fiddle with, when something isn't working. I may upgrade to a remote if this one dies; it is more than 12 years old and only 1 glitch so far and just a couple of weeks ago, flawless last week.Thinking about it, my wireless controller battery had to be replaced. After replacing the battery, I had to resynch to wireless controller to the harness's controller. The controller on my jacket side has manual buttons to also control the heat. It would be worth checking its functionality.
Chris