Low Washer Fluid Lamp

The low washer fluid warning lamp gives an indication when the fluid level in the washer fluid reservoir is too low. The instrument cluster circuitry lights the lamp for about two seconds when the ignition switch is turned to the On position as a bulb test. After the bulb test, the instrument cluster circuitry controls the lamp based upon a hard wired input from the washer fluid level sensor.

The washer fluid level sensor uses a float in the washer fluid reservoir to monitor the fluid level. The up and down action of the float opens or closes the switch within the washer fluid level sensor that provides a ground signal to the instrument cluster circuitry.

If the instrument cluster circuitry senses a ground input from the washer fluid level sensor for more than about sixty seconds, it turns on the low washer fluid warning lamp and sends a chime tone request to the Central Timer Module (CTM). This helps to reduce the effects of fluid sloshing within the reservoir. This lamp also latches. Once the lamp has been turned on, it will remain on until washer fluid is added to the reservoir and the ignition switch is cycled.

Refer to Washer Fluid Level Sensor in Wiper and Washer Systems for more information.