Instrument panel issues, 1995 90

[Kent McLean]

Printhead wrote:
> Solutions: 1) Wiring diagram shows that cruise
> control gets VSS (vehicle speed sensor) signal from the speedometer
> circuit board. Upon dis-assembly, I found that there are multiple
> modules in the instrument cluster. In the case of the speedometer, the
> VSS signal come into the main cluster board via the wiring harness, and
> is then fed to the speedo by pins and receptacles. This allows repeated
> separation of the layers for initial assy and later maintenance. The
> pins are tin plated copper and had corrosion on them in exact the point
> the receptacle made contact with them. I needed a magnifier to see this.
> I scraped the corrosion of and then cleaned them with contact cleaner.
> The speedo problem has not recurred since this fix. 2) The clock is a
> similar modular pin-fed device, but in this case, the pins had cracked
> solder joints where they come through the clock circuit board. Since I
> resoldered these, the clock has been working solidly. 3) The temperature
> display is another module, and upon disassembly, I found a small light
> bulb soldered in place. This was an easy fix. I don't think Audi intends
> for this lamp to be replaced. Also, I do know that this one has been
> covered here before. I like having the temperature display and am glad
> to have it back. 4) Self explanatory, although the replacement lamps are
> not super easy to find. Even the dealer parts dudes had to dig to find
> the lamps. Weird. 5) Ignition switch. Replaced with new one from dealer.
> New one was all black plastic, instead of a mix of black and white. They
> changed the design from some old junk ones I have around. Main return
> spring appears to be mounted in a better place. All the old and new
> switches I have were made in Germany.

Well done.  I think most of those issues and solutions are common to
the Type 44/200, too.  And I bet down the road they will apply to the
newer A4s, A6s, and A8s.

-- 
Kent McLean
1999 A4 Avant, V6 Tiptronic
gone: too many to count, including my first, "Bad Puppy"