skasula

My vehicle is a 2015 Mercedes Benz C300 4MATIC. I noticed a black pipe hanging behind the passenger side rear tire. I yanked on it and it came off. One end has an angle cut and the other end is flat. It has the part number "A204 639 14 94." I did research on google and no searches came up for this vehicle and this number was found no where. I am thinking that it is s drain hose from the panoramic roof. Does anyone know if this info is correct? And if it is, does anyone know how to re-fit the pipe back into place or how to replace it? I am keeping the car under my carport and only using it one days when there is no rain. Thanks.

irondad

It is the sunroof drain, unfortunately I can't tell you how to reinstall it.

skasula

Thanks for the picture. That confirms my suspicion that it is sunroof drain hose. was not 100% sure. Any suggestions on what needs to come off by other members ? may be back pillar cover from inside or trunk liner? Tube is not that long needing headliner removal.

skasula

checking in to see if anyone has any ideas. There used to be a website with instructions in pdf file format, I think it was WIS portal. Is it still available? can someone share that link.

skasula

update, in case someone needs it in future. This particular drain hose turned out to be for fuel tank filler recess. Need to remove wheel and wheel liner to gain access to the backside to hook it back on to the small plastic tube. You can see the hole on the front side under fuel cap. Mine was plugged with dirt, had to clean it. This drains the water collected at the fuel cap behind the tire.