Open the hood of your car.
Look on the passenger side of the engine compartment.
You should see a white or translucent plastic reservoir with a blue cap.
This is the windshield washer reservoir.
To remove the cap of the reservoir, simply twist it counterclockwise.
You can then add more washer fluid to the reservoir if needed.
Here are some additional tips for filling the windshield washer reservoir:
Use a funnel to avoid spilling washer fluid.
Do not overfill the reservoir, as this can cause it to leak.
Use a mixture of washer fluid and water according to the manufacturer's instructions.
You can also purchase pre-mixed washer fluid that is ready to use.