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Discussion Starter · #1 ·
VAG-COM coding is a REQURIED step in the installation of the RNS-E and almost any other device discussed on this site. If you have not used VAG-COM to reprogram your car, then your installation IS NOT COMPLETE and there will be things that do not work properly. Please consider this fact before posting questions about problems with your new devices.

If you do not want to buy a VAG-COM cable, then find someone near you that has one or pay your dealership to recode things for you. The VAG-COM cable and software is also an invaluable tool for diagnosing problems that you may encounter while installing any of these systems. For example, if your navigation unit is not receiving any satellites, you can check the faults within the VAG-COM software and see if the GPS antenna has an open circuit or a short. This is a much more intelligent approach to diagnosing problems then just guessing at everything and then posting on this forum for help. We are all happy to assist here, but we can't really help you if you can't help yourself.

The typical items that must be recoded are the navigation unit, instrument cluster, bluetooth module, steering wheel controller, CAN Gateway, etc.
 

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That's why I ALWAYS code each unit with VAG before shipping. :D
This way unit is plug and play and is perfect match to particular car.

Of course if client need to enable optional set of arrows on DIS then VAG tool is necessary but this is other story ;)
 

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I know this has been said before, but just for the sake of completeness. In order to get VAG-COM, you can either buy it at Ross Tech:

http://www.ross-tech.com/vag-com/

(you will need the CAN-BUS compatible version)

or you can find somebody with VAG-COM, there are several good lists of VAG-COM owners:

http://forums.tdiclub.com/showthread.php?t=43367
http://forums.fourtitude.com/zerothread?id=1427299
http://www.steve-hall.com/cgi-bin/VAG-Locator.pl

Good sources for information on VAG-COM coding are:

- this forum
- the Ross-Tech Wiki over at http://wiki.ross-tech.com/
- Sebastian's OpenOBD over at http://en.openobd.org/ (or, if you can read German, http://de.openobd.org/ is a bit more complete)
 

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Discussion Starter · #5 ·
Instrument cluster, CAN Gateway, Steering Wheel, Navigation , Telephone, etc must all be coded with VAG-COM when things like an RNS-E are installed into the car.
 

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Majority of the VAG codes responsible for functionality is located in NAV unit itself and TEL module. Most of those modules could be coded before shipping (not many people do that tho)

I understand that many people don't want to spend extra money to buy a tool which they will use once or twice. That is why I always ask for car options to adjust VAG coding to particular client car.

The only code that actually require access to the car is INSTRUMENT CLUSTER. You will need to let your instrument cluster "know" that your HU include NAV option. Of course navigation itself and other things will work regardless DIS is coded or not but those optional arrows are really nice ;)
 

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The arrows are nice but as PROXUS said, not a requirment.

I used my RNS-E for almost a year without ever hooking up a VAG-COM because the person I bought it from coded it prior to shipping it out.
 
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