986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Immobilizer Compatability from year to year

Smallblock454 · 05-26-2018, 12:37 PM

US keyfobs send at 315 Mhz. ROW keyfobs send at 433 Mhz.
So the receivers / alarm modules also work at different frequencies and are not compatible.
The transponders are not different. Transponders can be duplicated.
The programming of the key fobs via PST needs 2 codes. One code comes with the key fob as a code card. The other code part is generated via PST by the car vin.

05-26-2018, 12:37 PM	#15
Smallblock454 Registered User Join Date: Jun 2014 Location: LB, Germany Posts: 1,456	US keyfobs send at 315 Mhz. ROW keyfobs send at 433 Mhz. So the receivers / alarm modules also work at different frequencies and are not compatible. The transponders are not different. Transponders can be duplicated. The programming of the key fobs via PST needs 2 codes. One code comes with the key fob as a code card. The other code part is generated via PST by the car vin. Last edited by Smallblock454; 01-24-2020 at 04:53 AM.