New Recall for FSCU - March 2018
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Member
Joined: Aug 2016
Posts: 248
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2017 C63s Sedan | 2016 Yukon XL Denali
New Recall for FSCU - March 2018
Brought my car in for service B today and he noted recall campaign number 201708006, Update fuel system control unit (FSCU) software. Anyone else have any information on this? MBUSA only has the seat belt recall I already had completed.
BTW, I went ahead and got it done - we'll see if it has any affect on the drive/power/sound of the car...
BTW, I went ahead and got it done - we'll see if it has any affect on the drive/power/sound of the car...
Senior Member
Joined: Oct 2013
Posts: 282
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2017 C63S Coupe
Want to revive this thread. I took my car in today for the airbag recall, and this campaign was brought up as well. It would be great info if anybody has direct knowledge as to whether not this will affect a tune? The recall campaign specifically states that the FSCU module will be updated, and does not directly mention the ECU.
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
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From: Miami, FL
2003 CL 600
Only flashes the FSCU, has no effect on the M/E. It has something to do with diagnostic add-ons, there were some OBD2 codes missing or something like that, won't make any difference to you at all.
Junior Member
Joined: Nov 2016
Posts: 41
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W205 C63S
Amazing coincidence. Talked to my dealer about this today as well... And called RennTech. (Have RennTech tune).
RennTech rep confirmed that the fuel supply module is separate from the ECU and that you can have that flashed without wasting your tune.
RennTech rep confirmed that the fuel supply module is separate from the ECU and that you can have that flashed without wasting your tune.
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 1,012
From: Miami, FL
2003 CL 600
The FSCU is actually a little box under the back seat or in the trunk, depending on model, that just runs the low pressure fuel pump. The new pumps are 3 phase, so they have to have a dedicated controller, that's what the FSCU is. It is basically just the power supply and regulation for the low pressure pump in the tank, but it's got some diagnostic functions like any other module.
