My enthusiasms been curbed with fixing it but im observing others findings. Had 2 cars that done it over span of years. Willingness low! I suspect failure inside ribbon cable.
This is the symptom of the power (12v) dropping out -- leaving the EDU "thinking" the car is just started so it cycles the low-fuel light & check radiator light on, and then the gauges are back to normal...It doesn't appear to be any cable or interconnect.
I've separated the EDU from the rest of the cluster to isolate them mechanically.
I can readily reproduce the problem by giving the EDU a good rap with a screwdriver.
The fuel gauge flinches then goes to zero along with the coolant gauge.
When the connection is restored, the low fuel light comes on for a moment and the needles go to their proper positions.
Wiggling wires has no effect.
How in the world and what did you solder or reflow to fix this? I have EDU dissembled on my kitchen table and would like to know.Reflowing the EDU connector with 60/40 and plenty of flux seems to have done the trick.
I can no longer reproduce the problem.
I'm going to call it fixed and button it back up.