[Britwrench]

These cars have two keys supplied when new, I see countless second/third/unknown numbers with only one key, which sometimes don't work. You should have two keys, both working.

As the key head is now seven or more years old, (the circuit board tends to crack and fail) the best thing is to visit the local Porsche dealer and buy two key heads, have another key blade cut and get them both programmed. If you only have one key and loose it....

Make sure you also get the radio code and make sure any service actions or recalls have been done while there.