Keyless Error Codes

[Sdiamond]

Replaced both key fobs with new. PWSIS scan shows 3 of four doors communication issue which does correspond to passenger rear only button that works. Could it actually be that three other handles is causing key not recognized alerts?

[Sdiamond]

C20001 communication with CAN Safety 

C12017 communication with rear ended electronic control unit

C12013 communication with door control unit driver

C12014 communication with door control unit passenger

C12016 communication with front end electronic control unit

C12010 communication with tailgate control unit

[Loren]

In most cases old key fobs have to be removed before adding new ones.

Who programmed the new key fobs (and the car)?

[Sdiamond]

The codes were found at Porsche dealership. A week later had a mobile locksmith do two new keys. He was the one that found the one working door handle. He has an Autel scanner that gave same code descriptions but different letters.  
Keyless still works if I approach car with fob can unlock drivers door by touch with new key.  Locks unlocks pops trunk with fob, starts every time but that alert keeps going.

Wouldn’t mind not having keyless if the alerts would just stop. Otherwise replacing handles receiver antennas and who knows what else at dealer at $$$ per hour

[Sdiamond]

P.S. Thanks Loren for chiming in (pun intended). Sometimes posting into the abyss is rather frustrating

[Loren]

Find a good Porsche shop in your area that has a PIWIS - likely 1/3 to 1/2 the cost.