In May of 2020 some Porsche owners were sent software updates to their infotainment systems that caused the units to constantly reboot. The update was realted to Siruius satellite radio, but even owners not subscribed to the sevice started experiencing problems.
According to a class-action lawsuit the problem happened to any
Porsche vehicle equipped with an XM radio antenna and Porsche Communication Management (PCM) system 3.0 or 3.1 that received the Update.
Damage Caused by Constant Reboot Cycles ∞
The endless reboots are annoying and can cause a loud static noise during each start-up. But beyond those annoyances, there are concerns about drained batteries since the system continues to reboot even once the car is turned off.
And the constant reboot cycles can damage the system's internal hard-drive, meaning the owner is on the hook to replace the entire PCM unit at a cost over $2000.
Resetting the PCM ∞
Some owners have had success getting rid of the reboots by manually resetting the PCM system. Warning: this will remove all your information from the system, including any saved music, stations, or phone information.
- Soft reset by pressing and holding the INFO button for 10 seconds and wait for reboot
- To get to car options press the CAR button followed by OPTION button
- To reset the PCM select SET PCM system > Reset PCM > Vehicle Handover and confirm the two warnings.