Q: I have a Porsche Panamera with SiriusXM, and the exact same thing happened to me. Apparently, Sirius sent out an update that Porsche’s PCM and the whole system would continually reboot every 2-5 minutes. The solution to this is a procedure Porsche calls a “handover.” They use this when a car is sold, traded in, etc. and want to wipe all info from the system. Just google Porsche handover and follow the steps. Warning, all your settings, tuner presets, and such will be wiped out, so I suggest taking a picture of each screen before doing this. When completed, then request a refresh signal from Sirius. Back in business then.