Common Mercedes Benz E420 Washer Reservoir Problems and Their Causes
Driving with your classy Mercedes Benz E420 is always an adventure-you don't know what's going to happen, but you still look forward to the thrill. Whatever it is that you might encounter, whether a sudden snowfall or a pesky sandstorm, your Mercedes Benz is strongly built to get you to your destination. One of this vehicle's best assets is its windshield washer reservoir. It is capable of storing a considerable amount of fluid, which is enough to keep your Mercedes Benz's windshield clean and clear as long as you're on the road. But sometimes, extreme weather changes and excessive use speeds up your fluid tank's decline. For your awareness, here are the top problems encountered by Mercedes Benz washer reservoir and the common reasons behind them:
Cracks and other physical damage
If your windshield washer fails to squirt water out from the nozzles or if you hear the pump trying so hard to get the washer fluid out, your washer reservoir is probably empty because of a leakage problem. Although your Mercedes Benz E420 washer reservoir is made from sturdy ABS plastic, which is highly resistant to oxidation and corrosion, it is still prone to developing surface cracks. When these hairline cracks worsen, they will eventually lead to windshield washer fluid leaks. Cracks and other surface deformities are usually obtained from low- to high-intensity impacts. They can also be acquired after the windshield washer fluid freezes inside the tank since plastic becomes brittle when subjected to extremely low temperature. Generally, plastic tanks with cracks can still be repaired. But if you have some extra bucks to spare, it is recommended to just replace your broken stock.
Faulty washer reservoir cap and cap seal
You are already certain that your washer reservoir's body is free from cracks, and yet the windshield washer fluid still magically disappears-if you are experiencing this problem, you may want to check the cap of your washer tank or the cap's rubber seal. When these windshield washer tank components wear out or fail after some time, they can cause the fluid inside the tank to evaporate. If a tiny pinhole can drain the tank overnight, a small gap or crack in the cap or a torn rubber cap seal can cause a washer fluid-filled reservoir to become empty in days. Unfortunately, a damaged cap or rubber seal can no longer be repaired. When these things fail, the only option is to have them replaced.
Other troubleshooting tips
If the reservoir and its cap are fine, and yet your washer still refuses to produce the windshield cleaning fluid, the problem might be the tubes and the nozzles. If these windshield washer components get clogged because of dirt and wax accumulation, they can also cause the washer to malfunction. To solve this problem, you can opt to replace the tubes with new ones. But if your budget is tight, flushing the tubes and the nozzles to remove the unwanted debris can also do the trick.