1. Open the hood of your vehicle.
2. Look for a white or translucent plastic reservoir near the front of the engine compartment, usually on the driver's side.
3. The windshield washer tank cap should be clearly marked with the words "Windshield Washer" or "Washer Fluid."
If you cannot find the windshield washer tank by following these steps, refer to your vehicle's owner's manual for specific instructions.