Ross tech VCDS vagcom mods and tweaks for mk5 VW Jetta, Golf, and Rabbit.
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How To Scan and Modify Your Audi or Volkswagen Using VAG-COM
Amazon.com: OBDII Scanner Diagnostic Cable for VW Audi Skoda Seat Volkswagen, Support VAG-COM KKL 409.1, 16-Pin Car Programming Cable, OBD II Adapter Connector Cable Scan Tool, for Win XP/ WIN7 32bits ONLY
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How to activate DRL (day time running lights) VW Golf Mk5 with VAGCOM