My front door handles have never worked in my three and a half years of ownership, this never bothered me as the rears did work. Just recently they've stopped working too, simultaneously.
Is there a connection or just coincidence that they've both "died" together?
If you find a fix roberto I'm paying you a visit and stopping over till you've fixed mine
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Audi D3 S8 - 2007 - V10. B&O, Phantom Black, black and silver interior, and still completely standard with everything working as it should
Audi TT - 2015 - Ultra