Mine stopped working when my battery died last week. The idrive said I needed to calibrate the seat with instructions from the owners manual which I did not have with me. I ran the seat all the way forward and back and up and down for most setting. I then reset the memory and all is working again.
Edit. Now that I think about it... I don't think this was working with my old weak battery. I just got the x5 last month so I don't have much history to go on.
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