Quick links to:
Ross-Tech wiki
The Ross-Tech wiki contains a huge database of special procedures for coding, special functions, basic settings and help with specific fault codes.
Because the Ross-Tech wiki is such a large resource, until you've used it for while, it can sometimes be hard to find the information you need.
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In general, if your looking for a procedure which would apply to a single model, or model type (MK5 Golf, Altea, Touran etc)
choose the wiki front page and then make and model -
For key programming and other immobiliser related procedures
Choose the immobiliser section -
Retrofitting a tow bar, cruise control, navigation or other item
choose the retro fitting section -
For Diesel Particulate Filter Regeneration
choose DPF Emergency Regeneration -
Resetting a throttle body alignment
choose Throttle Body Alignment -
For other procedures common to many different models
choose common procedures -
To find help on a specific fault code, either
browse the fault codes section or type it into the search box
Don't forget the search box at the top of every wiki page. It's often the quickest way to find what you need
Ross-Tech website
Home of VCDS / VAG-COM
Ross-Tech is the manufacturer and developer of VCDS/VAG-COM
ERWIN
The Erwin portal is the official aftermarket technical data website for VAG vehicles and contains wiring diagrams, and other technical data straight from VAG. It's a paid service so make sure you have the needed software on your computer before you start a paid session