Q: Coolant warning light blinks red after starting cold engine. on 2004 Volkswagen Beetle

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Light goes out when engine warms up.
(1) Answer
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First thing you should check is your coolant level. Sounds like you might be just below the sensor on start up. Then when the vehicle warms up, the fluid expands and covers the sensor turning the light off.
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