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Last night I left the parking lights on and killed the battery in my 2003 996. This morning I did the jumper to the fuse panel, unlocked the hood and jump started the car and it runs fine. The only problem I see is now the radio does not work. It is a PCM2 with navigation, Bose amp and CD changer. The display says "System Error, Amplifier and CD changer not available" and there is no sound but the display and navigation functions work. Any idea what happened?

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There is a glass fuse INSIDE the CD changer, which seems prone to blowing if jump started. Worth checking, but you have to remove the changer, and take off the cover. When the fuse blows, it stops the signals flowing through the CDC and amp. The navigation is built in to the headunit, which is why it is still working.

Also, you should jump start a 996 using the connections in the engine compartment, as described in the owners manual.

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Richard,

Thanks for your help. I took the CD changer out and the glass fuse checked good. So I re-installed the CD changer and tried the radio again and still got the same message. Then I removed the Bose amplifier in the spare wheel well to see if it had a fuse. I disassembled the unit to look for a fuse but found none so I reassembled it, installed it and suddenly the radio works. So I am not sure what fixed the problem. Possibly a power reset to the amp when it was disconnected and reconnected?

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