At a glance
What can fail
After the engine shuts off, the rear heater runs automatically to cool the engine system. If the rear heater blower gets stuck or seizes, the blower resistor can overheat and fail.
What the fix does
Porsche dealers will replace the blower resistor with a new one that includes a circuit breaker.
Summarized — see the official notice for exact wording, dates, and contacts.