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997.2 with bose sound upgrade, occasional fault low rumbling base only, comes back ok

pclaxton

New member
Hi, just bought a wonderful 2008 997.2 Carrera S, fantastic car which exceeds my expectation, it is fully loaded so i have all the toys, pdk, memory sports seats, bose upgrade, sports, sports plus. I am happy to join the GB club as a proud new porsche owner.

I do have ever have an intermittent fault, I drive the car and all is well, PCM and Bose works wonderfully, everything is fine, then after I stop and restart the car the sound does not work (occasionally), there is a dull muffled low base rumble from the rear which sounds like just one sub woofer is working, does not matter what source I am using, switch the car off and return to it after for example 1 hour and it works fine. Only driven the car over 3 or 4 days and it has happened after each long journey of say a hour or more, but I am not sure it is duration related, it has always been fine when I come to the car on a fresh day. Perhaps it is heat related?

the specialist garage Ashgood who have been wonderful throughout the purchase have offered to replace the Amp, but I am not sure if it is a amp fault, a basic search suggests people are unsure, maybe a faulty fibre connection rather than faulty amp, but not much on line.

Can anyone help me and suggest where the fault lies ?

thanks
 
It does sound like the amp to me so I suggest you be guided by Ashgood and let them replace it and see if that solves the problem.
 
Mine does this too occasionally, seems to only happen when I’ve been using it for a long while (journey over a couple of hours) It comes back on its own after a while as you say, but if you need it to work again immediately (e.g you’d just pulled over for a stop at services and come back and it’s not working) pull the fuse and put it back and that cures it (very bottom right large fuse in drivers footwell fuse panel)
 

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