WJM

I was trying to help a guy out this weekend and couldn't communicate with the car.

He has an aftermarket stereo and remote car starter installed.

He removed the car stereo and we still couldn't communicate with it. Does he need to have the stock stereo installed as well?

Any help/advice would be appreciated by people with aftermarket gear.

Kris Hansen

don't you need a twin com for those?

ModifiedA4

im pretty sure it works with those...up to 2004 passats are B5s.

WJM

looking at Ross-tech's site, could be the K-line issue or could be that the car has CAN-bus circuitry.

I didn't thing the CAN-Bus was out then, but perhaps that is the issue and I need to buy a hex-com cable.

ModifiedA4

was the adapter harness removed as well?

WJM

take a look at the ross-tech article... makes me think the redesigned passat has the CAN-bus stuff

I have the ol' Ed P cable, so it doesnt like talking to cars with CAN bus, but again I thought that was a 2004+ feature<ul><li><a href="http://www.ross-tech.com/vag-com/aftermarket-radio.html">ross-tech aftermarket stereo article</a></li></ul>

ModifiedA4

and i have the edp interface too

BTW, I bought a ****load(min quantity buy) of extra ICs for that interface when i was hunting down an issue with it, so if you ever need one just ask...you can have one free o charge

WJM

Ok so it isnt my setup then. Good

I was wondering if he needed to install the stock stereo to complete the K line circuit. Otherwise it would be open, and not functioning at all correct?

ModifiedA4

scratch that...i havent scanned codes on his 2003 passat, only the older one.

WJM

can you try? Aka do it tomorrow at lunch, just to see?