Coolant warning.
Disconnect the sensor on the bottom of the tank and see if the light goes out. If it doesn't, short the terminals and see if it goes out. If nothing happens, you've got a bad wire somewhere.
If the light goes out on either of the above, just replace the coolant tank or disable the sensor by leaving it disconnected or shorted (whichever shuts off the light) and check your coolant level old school.
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$30 off ebay and it's OEM with coolant level sensor.








