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Lexus will turn on a dashboard light when the washer fluid level in your car is low. This liquid is used to spray onto the windshield when you activate the wiper control to help clear debris and dust while you drive. It is recommended to use a washer fluid that can withstand temperatures of zero degrees or lower. This will avoid the fluid from freezing in chilly weather. If you reside in a location where it never gets freezing, you can just add distilled water to the reservoir to spray the windshield clean. You can find various washer fluid options at automotive stores, and they are all suitable for use in your vehicle.
Insufficient amount of windshield wiper fluid
The low washer fluid alert in the dashboard lights up when the tank is almost out of fluid.