Audi A4 B5 8D Instrument cluster warning lights blinking/lit and no RPM

[alfwiggo]

Hello

I have a Audi A4 B5 (8D?) from 1996 that is giving me an annoying problem.
From startup to turn off, it is blinking on the warning light for coolant and breaks, and warning is solid lit for fuel and oil.
The RPM gauge is also not working.
It also beeps 3 times right after startup.
The car is working OK, and can be driven without any problems.

I have checked all fuses, they are OK.
I have checked diagnostics, and it did not give me any faults.

I made a video of the problem, can be seen here:
Avi 2,4MB: https://www.dropbox.com/s/y7ydrz4q1v...iA4B5.avi?dl=0
MP4 42MB: https://www.dropbox.com/s/h5wray8l1b...iA4B5.mp4?dl=0

Does anybody have an idea of what this could be, or where I should start my troubleshooting?

VIN: WAUZZZ8DZTAxxxxxx


Best regards

[scaphan]

Probably instrument cluster fried? Have you tried a new/different cluster?


Sent from my iPhone using Tapatalk

[alfwiggo]

No, I have not.
I was hoping I would not have to buy a new to fix this...

[Nollywood]

I would say there is a feed missing from one of the 32 pin connectors on the rear of the cluster.

Check the multiplugs, paying particular attention to the ground points. Though I would hazard a guess the missing feed is a 12V+ and this is most likely on the non-switched circuit.

[alfwiggo]

I took out the instrument cluster, and checked the cables visually.
It all looks good.

I wonder if there is any schematics that are available to troubleshoot this.
Or some sort of pin out of the clusters connectors.
There are two connectors of 26 pins each.
There is one connector with four pins that there is nothing connected to.


InstrumentClusterB.jpg

[alfwiggo]

Found wiring diagram

http://www.audihowto.com/audi-a4-b5-...g-diagram-pdf/
http://www.sizov.org/audi/shem/1996-audi-a4-wd.pdf