hey scotty i have a vw mk5 golf and when i start it up in the morning it says stop check coolant i…

hey scotty
i have a vw mk5 golf
and when i start it up in the morning it says stop check coolant

i know that it has coolant and it runs fine

what could it be?

those stupid VWs have so many freaking sensors on them, one is going out, like the coolant level sensor

how do i test the sensors?

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