RS246.com Forum :: The World's #1 Audi R, S and RS Enthusiast Community

I had the alternator on my 2003 done last week, but today i went to use the sat nav and the location was not updating fast enough for it to work, so i checked the signal in the engineering mode and all fine seeing lots of satellites and seeiing my mph on the Gps, then i checked the speed pulse and this wasn`t working at all, not seeing my speed or anything. So my question is does, anyone know where this gets the speed pulse from? and any ideas what the garage could of knocked or done for this not to work?

On the S5 platform the speed pulse is a separate signal that comes from the instrument cluster.