Instrument cluster LCD screen frozen

It reminds me of the old joke about Bill Gates riding with a group of experts when the car stalls. Everyone suggests a different solution until finally Bill says, "Let's all get out of the car and back in again."

These are good old-fashioned software crashes. I'm actually surprised that modern cars don't come with reset switches. In the meantime, disconnecting the small battery should cure anything that doesn't involve a hardware fault.
 
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