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Hello!
Does anyone with a flex fuel capable C300 know where the wiring for the fuel quality sensor traces to? I think it goes to the front SAM, but I'm not sure.
I'm trying to get together everything to swap in the fuel quality sensor to my GLK so I can run E85, but none of my diagrams show the wiring for the sensor.
Are you trying to convert an E10 vehicle to an E85?
Yep. The only difference in fuel systems between my GLK and a flex fuel C300 is the fuel quality sensor so in theory it should be an easy swap, just gotta figure out where to plug the sensor into.
Looks like you’ve done some research. I thought you would at least need to have the engine management system flashed to the E85 version or use an OBD dongle.
I was about to caution you because I had a SA spec 3.2L W211 that was certified for E90 and literally nothing in the fuel system was the same: fuel pump, injectors, ECU program. It also had less HP.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
The wiring harness for the fuel quality sensor passes through the floorboard under the driver's seat. There is a connector on the inside of the car for the wiring. I don't know where it goes from there.
The sensor is located on my C-Class midway on the chassis on the driver side.
Last edited by JettaRed; Mar 22, 2024 at 08:04 PM.
The wiring harness for the fuel quality sensor passes through the floorboard under the driver's seat. There is a connector on the inside of the car for the wiring. I don't know where it goes from there.
I saw your thread, I think you have the only picture on the Internet of a W204 flex fuel sensor installation
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