Regarding PSM failure, here is how to clear it (from the operator's manual):
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Putting vehicle into operation
After the battery is connected or after an completely discharged battery is charged, the mul-tifunctional PSM light lights up on the instrument panel and a message appears on the on-board computer to indicate a fault.
This fault can be remedied with a few simple steps:
1. Start the engine.
2. With the vehicle stationary, perform a few steering movements to the left and right and then drive a short distance in a straight line until the multifunctinal PSM light goes out and the message on the on-board computer disappears.
3. If the warnings do not disappear, then: Drive carefully to the nearest authorized Porsche dealer. Have the fault remedied.
4. After the warnings disappear: Stop the vehicle in a suitable place.
DIt heb ik ook maar van 't net geplukt, dus ik ben geen ervaringsdeskundige.
