T6 Windshield Washer Fluid Leaking, Washer Fluid Tank Damaged (Solution)

Hello,

Today, I found that the water tank in my T6 was empty, even though I had filled it just last weekend.

While searching for the cause, I noticed the inserted pump. The seal that fits into the suction tube seems a bit loose, and directly underneath, where the hoses connect to the pump, there was a drop of water.

As a quick fix, dry the suction nozzle of the pump thoroughly and then wrap it with 2 layers of insulating tape to slightly increase the diameter. Now sits tighter in the rhyme, whether it rhymes, the days will show.

To access the windshield washer pump, you don't need to remove anything major. A valve in the left front fender well can be opened with a large screwdriver.

Best regards, Rainer

It is still leaking. Attaching the pump to the container also didn't help.

I have also noticed that the windshield washer hoses may have been damaged, and they were also no longer clipped onto the hood hinges.

Possibly, the hose connections on the pump are also damaged.

Unfortunately, the bumper needs to be removed because you can't see anything clearly and the leak isn't obvious either. After 3 days, the tank is empty again.

On the Passat 3C, the windshield washer hose is often damaged by the bumper. Dieselmartin had once set up something here many years ago.
I had the same problem back then with my 3C.
Why am I writing to you about T6? The water will flow down the hose later and collect at the bottom near the pump. This means you might need to look a bit higher than at the bottom near the pump. If necessary, wrap the pipe with a kitchen towel and ensure that it remains dry over a longer period.

Hello,

The level of distress increased again to the point that I started further investigations.

The two spray hoses from the pump, going upwards, were inspected in the relevant area and were found to be in good condition. Furthermore, the expansion is actually quite complex; the Radhausschale needs to be removed, and if you're unlucky, the bumper as well.

Fortunately, I was able to remove the front part of the Radha valve for the inspection, and then the hoses could be seen/checked up to the height of the windshield washer fluid reservoir.
I saved myself the trouble of taking the test, because water doesn't flow uphill for nothing, and even if there was a leak, it couldn't be the cause of the container emptying while it was stationary.

After partial filling with wash water concentrate, the only blue drops I could find were directly at the pump's hose connection. There was quite a bit of dripping.

The gasket in the fitting appeared slightly compressed in one area, and my first attempt was to replace it.
After about 15 minutes of fiddling with a paperclip and various O-rings, I, frustrated, decided to simply insert a piece of silicone tubing directly into the pump nipple and the cut-off spray hose. Secured with cable ties, just to be safe. Now, no more drops can be seen.

Therefore, I am confident that it really works, whether it does or not will become clear in the next few days.

Best regards, Rainer

Tight, still