Coolant level sensor driver#

Part 1 of 4: Determining the symptoms of a broken coolant level sensorīefore you decide to replace the coolant level sensor, you'll want to complete some diagnostic work first to ensure that this is the part that is broken. However, there are times when the sensor displays incorrect data and will need to be replaced.

Coolant level sensor driver#

This will occur at first start up to warn the driver that they need to add coolant before driving to avoid overheating. When the sensor works properly, it will illuminate on the dashboard or trigger a check engine code to be displayed. This sensor measures the level of coolant inside the radiator when it is cool as warm or hot radiator fluid will expand as it heats. The coolant sensor is an electronic piece that measures the level of coolant in the radiator. Some modern vehicles have this sensor located on the inside of the radiator which makes them extremely difficult to replace, but for the most part, the coolant level sensor is easy to get to on most vehicles. The coolant level sensor is attached on the side of the radiator on most cars, trucks, and SUV's sold in the United States built prior to 2010. One of the most common sensors that deteriorate over time is the coolant level sensor.

But what happens when these sensors relay inaccurate information? The sensors on a vehicle are just as prone to failing as the components they monitor.

Most vehicle owners depend on warning and indicator lights to let them know that there is a potential problem brewing under the hood of their car, truck or SUV.