Once you own VCDS (or a comparable tool), a handful of routine tasks do most of the work on a GTI — reading and clearing faults is only the start. Knowing which function to use turns "something's wrong" into "here's the block that proves it"
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VW GTI · Diagnostics
Once you own VCDS (or a comparable tool), a handful of routine tasks do most of the work on a GTI — reading and clearing faults is only the start. Knowing which function to use turns "something's wrong" into "here's the block that proves it"
…