Miele g1023 does not take water...just flashes three lights

The part number given is not a Miele part number - most likely that is the issue

http://www.user-manuals.com/user-manual-MIELE-G2170SCVi.html MIELE G2170SCVi Instruction Manual 4 99 MIELE G2170SCVi It complete owner... I think you will locate your blinking code in this link. Thank you and leave feedback.

Sounds like bad control board. Try calling the guys from the service, I don't think you'll be able to fix this by yourself. Source: PDF Keep

Must be a code. Check your manual. If it starts ticking...run

http://m.miele.ca/OperatingInstructions/en-CA/Dishwashers/Previous%20models/Miele%20Dishwasher%20Manual%20G851%20SC%20Plus.pdf
Page 39

either the inlet water valve is bad and needs to be replaced or the controller for it is not cutting off the electricty to it, If you are going to replace something, replace the water inlet solenoid valve.

Check the motor brushes and belt.

I have a Miele Futura from about 2011. In 2019, I had the issue were all three yellow lights, cleaning, drying, and end, were flashing, initially after a cycle was running and later, after several resets, almost immediately after trying begin a cycle. I strongly suggest watching Scott the Fix It Guy on YouTube. He shows that there are basically 3 different reasons why. 1. A leak that is tripping the leak sensor. Put the dishwasher on buckets and watch for a leak without the drip pan. If no leak, check the motor. He shows how to remove and inspect. If there is something in the impeller it will trip those three flashing lights. I did that and found no blockages and that too didn't fix it. The final source is the heater / pressure switch. So I ordered that from Miele ($75) replaced it and now it runs great!!

Usually indicates a intake or drain fault - could be a plugged drain line at the garbage disposal or insufficient water coming into the unit

there is still water in the waterproof tray at the bottom of the machine and the float switch has activated. pull the machine out (if pipes allow) and tip the machine backwards to drain the water from the tray.