I recently had an issue with mine not having 4wd had it on VCDS and it all communicated etc, but found a broken earth strap to it and done oil and filter change and now it all works,
So might be worth looking at doing that first for the sake of £50-60
Help ! I have a Audi A3 2 litre tdi Quattro on a 55 plate. I need a haldex unit for my rear diff because the person I bougHt the car off has not serviced my question is if I bought a second had one can I re code it ?
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