Hey guys,

I am helping someone with their PCM repair/Carplay upgrade.

I sent the PCM to Becker to repair the constant re-booting issue, and upgraded to Carplay while we were at it. The process with Becker went super-smoothly. However, once we re-installed the PCM in the vehicle, we have been unable to fully re-code the PCM to the vehicle using PWIS. The PCM must be re-coded and activate the AUX function for Carplay. It's behaving as-if the PCM was from another vehicle. To everyone's knowledge, the PCM is original to the vehicle.

Anyone have any insight into such a dilemma? Is there a way to research the PCM serial number and confirm if it is original to the vehicle (VIN)?

Any help is appreciated.

Thank you!

 

Hey there,

The original PCM 3 serial number is listed on the original build sheet which your local Porsche dealer (OPC) can print for you. You can get the same info from a website such as VIN Analytics too.
PIWIS will let you see how the PCM is coded and should allow you to change coding as required.

I hope that helps!

 

I’ll have to check but the PCM may need to be recoded with the VIN of the vehicle - it may have lost this if Becker reflashed the ROM in the unit. You can do this with PIWIS and then code for the Aux In.

Hope that helps

 

Hi. Sorry to resurrect this thread (i just replied to another thread also). I’m trying to code a PCM 3.0 from a donor car to my 987.2.

Can this be done via PIWIS ?

 

you need a unlock code purchased online and piwis to enter it. Can add functionality in there too at same time if wanted with other unlock codes.