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It's been posted many times here that the A4 unit (8E0 xxx xxx x) MUST have the speed signal over the CAN bus.

To use the separate speed signal you need e.g. an A6 unit (4B0 xxx xxx x).
 

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Popov said:
Yes i read a couple of posts but thought that audi A4 only has can and no gala as i do in my car. But thats wrong i asume?
No that's right.

The A4 only has CAN, hence the A4 version of the RNS-E MUST have speed over CAN. So there's no need, indeed no point, connecting the Gala signal to an A4 RNS-E (8E0 xxx xxx x).

Your original question was "can I use the Gala instead of the CAN"? - the answer to that is NO - because you have an A4 version of the RNS-E. If you had the A6 version, then the answer would be YES. There is nothing you can do with Vag-Com to change this, even configuring it as an A6 won't do it - the hardware isn't in the A4 unit.

AFAIK the same is true for the illumination signal. The A4 version of the RNS-E MUST have that over CAN.
 
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