New install - code problem

here's what I would check:

1) the plug/play adaptor...and verify all the connections in Connector III. Maybe the adaptor doesn't include the K diagnostic (for VAG com) and is having a problem communicating with the ecu. Could be a problem. See the info in this link for reference.
http://www.nav-plus.com/instructions/installb5.html

2) Unplug the Nav+ from everything and turn off the ignition...let it sit for a few hours...then try and reconnect it. Try to use the 4 digit code with the ignition off....and then on. or...try and plug everything back in....then turn on the ignition and let the car sit for an hour...to see if it needs time to "speak" to the ECU. Then try the sec code and see if it works.

3) Are you using the code that came with your unit....or the one that was with your original Sym II. I ask this because you reference a code in a book....and most of the Nav+'s don't come with that way. It's a long shot...but I thought I'd ask.

4) Did you buy this from someone in germany or a local seller? Can you get your $$ back?


Hope this helps! Good luck!

Thanks I'll double check your first suggestion, but I think remember seeing a pin there... I can access my Symphony from my VAG, so wouldn't that prove the K diag is functioning? I do not have the CAN wires from the plug & play harness connected as I didn't want to go to the trouble of removing the cluster untl I knew the unit worked. I thought they were optional. Am I wrong?

#2 has been tried exhaustively, so I don't know how else I can try to let it "set"

#3 Yes, I got a book with my NAV+. The serial number matches, so I'm sure it's the right one.

#4 Good question. Got it on e-bay from a private seller who claimed that it worked. But now he says that he never tried the code, just powered it up to see if it "worked". I may have to see what my recourse is.

Thanks again. I'll double check #1. Just didn't realize that the VAG would play a part in the code entry scrren.