That is it...your chip in the remote may be bad, the battery in the remote may be bad and worst of all the ACU may be bad, which means new unit plus a set of keys to match. The unit can be purchased at Pelican Parts (OEM Porsche Part) for $412.50 plus shipping then the keys would come from your Porsche dealership, average price about $200. First, I would have Porsche check the unit, it maybe something not so expensive.
