[Biturbos4] 2K S4 Cluster with lines also

Jonathan Conta jonnyconta at yahoo.com
Tue Jul 12 08:58:57 EDT 2005

I recently had some issues with mine as well, which thankfully is still under extended warranty.
The data readout portion of the display (mpg, ave. speed, etc.) basically went dark, but I knew it wasn't the display itself since the door ajar warning would still come up without a problem.  I was also having some concurrent issues with the cd player (got nothing but CR ERR1 when you put a disc in).
According to the dealer, the stereo head unit is upstream in series with the display, and if the radio doesn't pass the signals through properly, the display goes dark.  When I asked them why the door ajar would still work properly, they couldn't answer that though I suspect it is in parallel with the radio/car data feed.  I don't have a wiring diagram to confirm this though.
At any rate, they replaced the head unit and everything works fine now.  So you might want to check the feed from the radio to the cluster, though it sounds like yours may be worse off then mine was.

Richard Ness <richard at nessnet.com> wrote:
My cluster is also bad, or irritating enough now, that I want to fix it.
I removed the cluster, cleaned all the contacts, even opened it up
and looked for obvious cold solder joints, etc. Couldn't see any
and I didn't want to completely ruin the thing by going any further.
Replaced the cluster and darn it, the lines didn't go away at all.

Here's the weird deal. Using VAG-COM and running the output
tests on the cluster, I tested the display(s). The strange thing is that
EVERY pixel lights up - no lines!! So, it isn't the display itself that
has the (lines) problem. It's something else (driver circuit??). Could
someone else that has the lines AND VAG-COM verify this also?

So... for those of you that have actually replaced it. How much$$?
How much did Claire and/or your local stealership want for one?

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