help needed new hu fitted now no central locking

markyR

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Oct 31, 2007
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fitted my new aftermarket hu in my 1998 a3 today now my central locking doesn't work by romote or key, checked fuses and replaced batteries in key fob but still inop. also with my old unit the rear speakers only worked now they all work apart from the drivers front speaker and there is a permanent noise coming from there even with stereo off and some times and aduible weird sound when tring the lock button from inside the car.

any help much appreciated.cheers mark.