The windshield washer fluid reservoir is a container located under the hood of your car, typically near the battery. It holds the windshield washer fluid, which helps clean the windshield by spraying it when you activate the windshield washer system. To check the fluid level, open the reservoir's cap and inspect the minimum and maximum lines on the side of the tank. If necessary, refill the reservoir with the appropriate windshield washer fluid, ensuring you do not overfill it.
