I know, bad engineering no doubt. However I figured out a good retrofit to fix it once in for all and I did it in 2020 and my drains have never been clogged again and I park under a tree that buries my car with leaves year round. I have some videos on my channel that shows what I did. It was a simple solution. One other thing I did too was I got a small blower from Harbor Freight to blow the leaves off my cowl drains and I keep in my car. I blow it off about once a week. When they made this car it was meant for rich people parking it in a garage.
Sadly this cowl drain shit has easily been plaguing MBZ since 2007
I know, bad engineering no doubt. However I figured out a good retrofit to fix it once in for all and I did it in 2020 and my drains have never been clogged again and I park under a tree that buries my car with leaves year round. I have some videos on my channel that shows what I did. It was a simple solution. One other thing I did too was I got a small blower from Harbor Freight to blow the leaves off my cowl drains and I keep in my car. I blow it off about once a week. When they made this car it was meant for rich people parking it in a garage.