Gauge cluster failures

[bwillia080261]

Originally Posted by Qmulus

I do repairs of 986/996 instrument clusters as well as automotive electronics in general, specializing in European brands, for people all over. One was recently sent to Dubai, and another to Switzerland. I have repaired a bunch of late 986/996 clusters and a few of the early ones, including a late 996 Cup cluster ('05, but it uses the early cluster - a real oddball) that had a problem which sounded like what you are experiencing. Most of what I see is problems with the oil level measurement circuitry, but I have done a few others as well. If you would like, I could have a look at one of your clusters and see if I can figure out what is killing them for you.

That would be great. Where do I send it? How much for the diagnostic? PM me if you want. Thanks!

[leafdude555]

The blue/gray wire on the blue connector on the gauge goes to many places in the center console to light up the backlight for the climate control unit, the radio, buttons, ash tray compartment, etc. Check to make sure that is not shorted to ground somewhere back there.

I had a problem with my gauge cluster backlight not working and it was because the blue/gray wire was shorted to ground behind the radio. The gauge backlight connects directly to the blue/gray wire.

I highly recommend getting a wiring diagram from the Bentley manual and following all the wires through.