Where to Add Windshield Washer Fluid for GLC?
3 Answers
The windshield washer fluid for Mercedes-Benz GLC should be added in the engine compartment. Mercedes-Benz offers two types of windshield washer fluids: one commonly used in summer, which contains insect-removing agents to quickly eliminate insect residues on the windshield; and another specifically designed for winter use, an antifreeze-type windshield washer fluid, mixed in a 1:1 ratio to ensure it does not freeze even when the external temperature drops below -20°C. When adding windshield washer fluid, the following precautions should be noted: Professional windshield washer fluid must be used for cars and cannot be replaced with tap water. This is because windshield washer fluid not only cleans but also has anti-static and lubricating functions. In winter, it also provides antifreeze and anti-fog effects, which tap water cannot achieve. If you are in the wild and run out of windshield washer fluid, you can temporarily use mineral water as a substitute. Although mineral water is still far inferior to windshield washer fluid, it is better than tap water as it contains no impurities. Windshield washer fluid has the following properties: Cleaning performance: Windshield cleaner is composed of various surfactants and additives. Surfactants typically have functions such as wetting, penetrating, and solubilizing, thereby aiding in cleaning and removing dirt. Antifreeze performance: The presence of alcohol and ethylene glycol significantly lowers the freezing point of the liquid, providing antifreeze effects and quickly dissolving frost. Anti-fog performance: A single-molecule protective layer forms on the glass surface. This protective film prevents the formation of fog droplets, ensuring the windshield remains clear and transparent with a clear view. Lubricating performance: The ethylene glycol in the windshield washer fluid has high viscosity, providing lubrication to reduce friction between the wiper and the glass, preventing scratches. Anti-corrosion performance: The windshield cleaner contains various corrosion inhibitors, ensuring no corrosion to any metals, and is absolutely safe for car paint and rubber.
I remember spending a long time searching under the hood when adding windshield washer fluid to my GLC for the first time. It's actually quite simple: after opening the hood, look towards the front right – the blue plastic cap with a windshield wiper symbol is what you need. It's best to turn off the engine before adding fluid. Just lift the cap upwards to open it, carefully pour using a funnel to avoid spills, and stop when you can see the liquid level. Last winter, I accidentally overfilled it, and the fluid froze, nearly cracking the reservoir. Generally, a 2-liter bottle is sufficient, but if you're in northern regions, make sure to choose the -30°C antifreeze version. Keep an eye on the dashboard warnings – a water jug icon will light up when fluid is low. Don't wait until the washer stops working to top it up. Doing it yourself takes just three minutes, whereas going to the dealership and waiting in line is a waste of time.
The GLC windshield washer reservoir is located on the right side of the engine bay, identifiable by its blue cap with a fan-shaped design. Seasoned drivers often keep a bottle of windshield washer fluid in the trunk and know it's time to refill when the spray weakens or starts splitting. To refill, steady the hood support rod with your left hand, hold the washer fluid bottle with your right, locate the reservoir opening, and pour it all in at once. Remember, never mistakenly pour it into the coolant reservoir—the yellow cap belongs to the cooling system! Use standard cleaning fluid in summer, but switch to antifreeze type in winter. Last time, I used a concentrated windshield washer fluid purchased online, mixed with distilled water at a 1:10 ratio, and the cleaning effect was outstanding. After refilling, don’t forget to secure the cap and test-spray twice to ensure the nozzles aren’t clogged—only then is the job truly complete.
