So... I got a “cooling system fault” warning on my new to me 2015 c2. Nothing visible was obstructing the radiators, by I suck my hand through the vents on the driver’s side and found all this junk. Now I trying to decide if I should get the zunsport or Rennline grills or if I leave it open and check this area as part of the routine car wash.

Also, this didn’t clear the error message, but I’m wondering if that has to be done by the dealer.

I had a “cooling system fault.” It’s a failure of one of the changeover valves. There are like 7 of them.

in my case it was the one running the sound symposer.