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Traffic Message Channel (TMC) update for US cars

Electrical and Electronic

Vehicle Information: Model : Carrera; Year: 2005; Mileage: 46000;

The April 2008 PCM update, described in TSB 32/07, states that "Where there are TMC ("Traffic Message Channel") info available, road sections for which traffic-related delays have been reported are displayed graphically on the map". TMC is available through Clear Channel in the US, and available for Lexus, some BMW, and other makes. I have not read of anyone able to get this to work on Carreras with the PCM update to PCM 2.1 Level B/C and the updated map DVD. Do you know if this really works? One online forum post said he contacted Porsche and was told the real time traffic overlay functionality is only available in Europe! What's the real story (before I spend $300+ for the latest PCM update)?

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