Nitemare9

I have a 2017 911 turbo S. I had the exhaust replace with a Fabspeed system and now the top won't go down. It says "roof control fault" on the dash.
The car runs great and sounds great. The windows front and back work fine. Any ideas on what is wrong. On my code reader there are no codes.
Technician at the garage that did the work doesn't have a clue(No surprise there). There computer says nothing wrong.(No surprise there).

Elliott991TS

I would bring it your dealer, doesn't sound like anything related to the exhaust

neil.schneider

sechsgang

I don't see how there is any way an exhaust without a tune could do that at all on it's own, so it likely is just bad timing with a roof fault.

Need4S

I don't believe in coincidences when things like this happen. But the only thing I can think of is that the tech who installed the exhaust may have disconnected something and failed to plug it back in all the way. There may be a sensor that detects when the engine lid is open, for example, that thinks the lid is open so it won't let the roof operate. Wasn't the bumper removed to install the exhaust? I'd start by retracing all the steps to R&R the bumper. Otherwise, as others noted, it's probably a dealer visit.

Nitemare9

It turned out to be a bad micro switch. of course it had to be ordered from Germany as there weren't any in stock, any where.
The top works great now that the switch was replaced. It had nothing to do with the exhaust installation. The guys who did the exhaust
install also did the plenum and Y-pipe. Fabspeed manufactured the exhaust with the sport cats. Sounds great, but a little quieter than I expected.