What does 'Please add cleaning fluid' mean?

[Brad]

Please add cleaning fluid means: The car's glass cleaning fluid is low and needs to be refilled. Here is an introduction about refilling cleaning fluid: 1. When to refill cleaning fluid: Car glass cleaning fluid is a consumable in vehicle use. When it runs out, the system will remind the owner to add it promptly to avoid affecting normal use. 2. What is cleaning fluid: It refers to the car windshield washer fluid, commonly known as glass water. High-quality car windshield washer fluid is mainly composed of water, alcohol, ethylene glycol, corrosion inhibitors, and various surfactants.