The display error is a sign of either a failing windshield wash level sensor or the coolant level sensor (forget which).

The fuel gauge not responding is usually the level assembly gone a bit haywire - it also contains the fuel tank pressure sensor.

btw - the gauges are easy to remove, get a wire coat hanger, bend it to shape of two handles and the workign edge should be a 90 degree hook about 1/8 of an inch only, wedge it between the gauge bezel and the wood trim to contact the teeth of the gauge bezel from the back, it will pull out smoothly (might take a side to side coaxing to get it going)

if you have removed W124 gauges, its the same principle.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)