Hello all,
Back in the MBWorld. Got this 2013 C300 4Matic cheap. Had clogged sunroof drains. Wet carpet really bad. Took out all carpet interior. Was a really heavy sponge, let dry.
Anyways, I checked nemigaparts for this Mercedes FG 204.080 (61T). Can't find the part number for these 3 wires that go into a hole under the driver seat. Where do these 3 orange colored wires go to underneath the car? What part numbers are associated with this?
Any help?
Closest I found was the plastic wiring loom plastic housing: https://nemigaparts.com/cat_spares/e...80/61t/82/102/
and the front floor paneling: https://nemigaparts.com/cat_spares/e...80/61t/68/410/
Thanks.

This part number

Where it lives under the driver seat carpet

 

Photos too close. i cant tell exactly where in the car it is,. Which way is forward?

 

Heres the parts diagrams for the 204.080. Try looking in section 54 Electrical Equipment and Instruments.

https://truckmall.ru/epc.aspx?mid=10518

 

Hello! Thank you for sharing that new website. Here is a clearer picture. Highlighted general location where this hole lives. This hole is on the right side nearest the center console on the floor under the driver seat. This is the closest I got from your website but this is the Yaw sensor ( my yaw sensor is actually located in the center console. Good news for me because it didn't get wet and it's like $300 ):
https://truckmall.ru/epc.aspx?mid=10518&subcatid=3805

What I'm interested in is whatever is right next to the yaw sensor in that floor hole.

 

I was looking through the cable harness diagrams but not finding that specific one.




From the photo it looks like thats a weatherproof grommet and im thinking it leads to the underside of the floor. theres 3 wires and one looks brown like a ground wire, so im thinking its some type of sensor wire. Not sure what it could possibly go to.

That Yaw sensor looks like it has 4 or 5 wires and is mounted inside the car.

 

Good afternoon TimC300 & W204 owners. After some corroded wiring fixing all I am left with resolving now is a right catalytic converter for this check engine light. Car is nice and dry. Even after some heavy snow here which is nice. All 3 codes = P0420 and I had a local indy confirm the issue as well with a legit mercedes-benz scanner. What are my options here? Just buy the OEM cat for $1k?

https://nemigaparts.com/cat_spares/e...80/61t/49/210/

Remain: Converter & Pipe - Mercedes-Benz (204-490-30-47-80)
(204490304780)
New: Converter & Pipe - Mercedes-Benz (204-490-30-47)
(2044903047)

 

I would try replacing the O2 sensors first.

 

I was searching around and it seems some people have had good luck with a CRC fuel additive. May just need a cleaning and be worth looking into.

 

Thanks TimC300. I'll be changing out the 02 sensors (old with new) over this weekend as parts arrived in the mail from fcpeuro:


I do have some Chevron techron laying around. I'll give the CRC a go next gas tank trip. Might just need an italian tune up? Fingers crossed.