) of your XM collection, or perhaps searching for those elusive headlight washer covers? This is the place to do it.Assuming the engine idle didn't drop to a level where it was nearly stalling, this looks like an instrument cluster fault.XMdownunder wrote: ↑Tue Jan 16, 2024 9:37 amI had a beaut new issue pop up today during short drive the hydraulic pressure, stop command, coolant level and engine oil pressure warnings lit up together. It was a hot day of about 30 degrees C and I pulled over check fluid levels all OK gave 10 minutes cool down and when restarted the lamps stayed off. But the same lamps came on again at end of the short trip home.
All those lamps operate from a single +12v supply and each one is shunted to Gnd to illuminate the lamp.
The Gnd links are connected together through diodes, so a single trigger can turn on a pair of lamps, such as the warning lamp and the STOP lamp, but each feed in is separate.
Possibly one of the circuits triggered and there is a current leakage on the circuit allowing all the lamps to be brought on together.
Power up the instruments cluster and individually shunt each of inputs of the respective circuits to Gnd. Each should bring on that lamp and the STOP lamp, but one, or more of them are bringing on the whole lot.
Hydraulic level and Hydraulic pressure. Black 15 pin connector, Pin 4.
Coolant temperature Black 15 pin connector, Pin 2.
Coolant level. Yellow 15 pin connector, Pin 8.
Engine oil pressure sensor. Yellow 15 pin connector, Pin 7.
My first guess would be the coolant temperature, or level sensor as they can be a bit flakey mainly due to contamination of the probes.
Maybe the engine did get a bit warm...is the fan operating?
It could be the circuit board is misplaced so light leakage from the STOP lamp leaks into the other lamp housings.
See Gabor's excellent circuit diagrams in the linked thread.
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