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The coolant level sensor is an electrical sensor utilizing a moveable float and a reed switch to sense when the radiator has a low coolant level and alert the driver to this condition. The float contains a ring magnet which closes the reed switch inside the body of the sensor when there is sufficient coolant in the system. When the coolant drops, the float follows the level, the reed switch is removed from the field of the magnet and the contacts of the reed switch open and sends a signal to the indicator light in the instrument cluster to warn the driver of a low coolant level.
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Coolant Level Sensors
