Anyone else ever have this come up? It says not to drive more then 50MPH!!!!

This message is on the dah of my 06 Cayenne Turbo S.

I have an appointment for today at 1. How serious is this?

TIA
FRank

My first thought is it has to do with your collapsible spare tire. Do you have TPMS (Tire Pressure Monitoring System)? Is there a sensor for the spare with TPMS? I have never seen that error before...

Are you running on your spare tire now? That would limit you to 50MPH.

The car has TPMS and it is running it with them. The spare tire is something I haven't touched since the car was bought new since 2006 and this is the first time I've seen this warning also.