pois se sabem se há ou não nas b6 não sei...
mas, uma simples pesquisa no google e encontram ate sistema keyless para b5 96/98
por exemplo
http://www.nobau.net/auction_details.php?auction_id=1731&option=item_watch
outro:
Comfort and Convenience Features
air conditioning w/dual-zone automatic climate control, interior air filter, power steering, tilt/telescoping leather-wrapped steering wheel, cruise control, leather upholstery, 12-way power front seats, front bucket seats w/height adjustment and power lumbar adjustment, wood interior trim, center console, cup holders, split folding rear seat, heated power mirrors, power windows, power door locks,
remote keyless entry, AM/FM/cassette w/in-dash 6-disc CD changer, digital clock, tachometer, trip computer, outside-temperature indicator, rear defogger, illuminated visor mirrors, map lights, variable-intermittent wipers w/heated washer nozzles, remote fuel-door and decklid release, floor mats, Cargo cover, rear wiper/washer, roof rails .
resto e imagens:
http://www.coches-motos.com/imprimircoche759434129X-Audi--A4--30-Avant-.html
outro, vejam as standard feactures:
http://www.718compass.com/inventory/03A430qAvantBlueGrey_3A241193.htm
tenho de ligar ao vag-com para ver né?