I had Modulemaster rebuild mine and it's like new now. Long story short - FedEx lost the unit on it's way back to me. Modulemaster sent me another one but it blew a fuse each time I tried to install it, so there are wiring differences in units that look the same. Modulemaster took responsibility and told me to buy a new one from Porsche at their cost. Just as I was about to do that my original one turned up after two weeks with FedEx.
They also sell a DIY kit, but their cost is so reasonable that why mess with it?
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