Driver’s seat is no longer in deep position

Hello together, 3 days ago my Phaeton lost his seat posts in the memory again. I thought that you could put them on quickly again – but far missing …. Unfortunately, the driver’s seat does not go down as low as I would have liked. I once connected VCDS and thought that you could reset it – but I find nothing to do with it. In the errors is only regularly the temperature sensor … short circuit or mass problem. Does one of you have an idea how I like the seat he can open into all endpoints? dancing hint – no there is nothing under the seat. I am grateful for every helpful tip.