The occurrence of a water leak

[DSM10000]

In the case of a 2009 sedan, it is seen that water is directly impacting the front driver side of the vehicle, namely the Sam unit. The question at hand is to the normalcy of this occurrence.

[SkippyTom]

It is anticipated that the drains located under the windscreen wipers are obstructed by accumulated debris.
Attempt to insert a slender wire into the rubber conduit that extends from the grilles situated on both ends, as well as one positioned in the centre.

One possible course of action involves lifting the vehicle's bonnet, taking precautionary measures to shield the Sam and fuse box located on the driver's side, and thereafter directing a forceful stream of water down the drain.
The space underneath the vehicle should be devoid of any objects or obstructions.

[DSM10000]

There are no visible drains in the area. Instead, there is a plastic cover with a grill-like structure. There is no barrier between Sam and the plastic cover, allowing water to flow directly onto Sam via the plastic grill.

[DSM10000]

I have identified the issue at hand. What steps should I take in order to rectify it?

[DSM10000]

[guyskin]

Upon inspection, I was quite aback to see the presence of drips in my findings as well. Water infiltrates the wiper arm shaft as it traverses the plastic scuttle. A seal is present at that location; nonetheless, it seems to undergo desiccation. then, the water proceeds down the wiper arm assembly and then descends onto the SAM. The design might be improved. I have just applied a thin layer of silicon sealant on both sides of the scuttle, which is expected to provide assistance. Undoubtedly, the obstruction of the drain channels would exacerbate the issue at hand. However, it is advisable to inspect the seal of the wiper arm.

[guyskin]

Oh, you have achieved the task before me! The seals remain intact; yet, water is still able to permeate through. There is little liquid leakage, occurring sporadically.

[DSM10000]

It seems that there is a problem with the seal, but I am not of how to address it.

[DSM10000]

I am inquiring as to whether the seal is a separate component or whether it is included with the wiper arm. It seems to be lodged inside the arm.

[guyskin]

In my perspective, it seems like the scuttle and the wiper arm are distinct entities, or at the very least, the scuttle is a component of the wiper system. I have observed that on my vehicle, I am able to manipulate the scuttle vertically, while the seal remains affixed to the scuttle rather than the wiper arm. I am unable to discern the manner in which it connects to the scuttle, but I must admit.

[guyskin]

Upon conducting an online search, it seems that the components in question are indeed distinct and are often referred to as wiper arm spindle seals. However, I am unable to locate an e class vehicle, suggesting that I may need to get one from an authorised dealer. In order to install the component, it will be necessary to detach the wiper arm. If the wiper arm cannot be easily removed, a puller may be required to detach it from the spindle. I have managed to cope without certain resources or provisions in previous instances.