Factory FGS module? (002 545 41 32) - PeachParts Mercedes-Benz Forum

Hit Man X · #1 10-07-2007, 07:07 PM

What can you guys tell me about this module?

How's it wired in, years it came in, etc.

2phast · #2 10-09-2007, 08:58 PM

I don't know what that module cross references too, but the W126 and the W124 (400e) both used a FGS module to upshift/downshift the transmission into 1st gear. The upshift/downshift speed is pre-set and not adjustable, I looked at this as a possible solution, then I found this

http://www.fgsswitch.com/

It works very well and I am very happy with it.

Hit Man X · #3 10-13-2007, 11:55 PM

Any idea where it's mounted in the 400E? I know of a few and I need a few.

Thanks

2phast · #4 10-15-2007, 06:37 PM

If you look at the service manual, the FGS relay in the 400e is located in the fuse box or somewhere right in that area, I don't remember for sure, its been while since I last looked it up.

Hit Man X · #5 10-15-2007, 07:17 PM

I don't have the FSM for the W124.

Any idea how large it is?

Hit Man X · #6 11-10-2007, 07:24 PM

Scored one today from a 500SEC Euro. It's mounted right next to the cruise amplifier. It's black, with six pins. The following is what I know and has been cut/pasted here too. If there is interest, I'll follow up with a few pictures.

Here is what I know about that first gear unit:

Here is how to wire it up :

Pin 1 - wire to kickdown wire which is live +12V when switch is activated
Pin 2 - ignition live
Pin 3 - blank
Pin 4 - Ground
Pin 5 - wire from back of speedometer to give speed pulse
Pin 6 - blank

All you need to do is remove the white wire from pin 2 on this module and splice it to +12V Hot with ignition. Now you'll have first gear start.

That wire on Pin 2 is only +12V when you engage the B switch...as you may know, moving selector down to B and then pulling away gives you 1st gear start. So if you give this wire +12V at all times with ignition on, you will always pull away in 1st gear, without having to move lever into B. Just leave it in D and you will always start in 1st.

The module cuts power to the B switch at 7mph, at which point you get the 2nd gear shift... unless at full throttle.

2phast · #7 11-14-2007, 04:39 PM

Yes, it is similar to have the module for the 400e works, only problem is the shift point is not adjustable, 7 mph is way to early to be shifting from 1st into 2nd IMO. Hence why I went with a adjustable unit.

Hit Man X · #8 11-14-2007, 05:00 PM

Well for normal dorking around 7mph upshift is adequate for me. If I need it higher my foot will be further down.

Hit Man X · #9 11-16-2007, 07:30 PM

Any clue what the speed pulse wire color is?

It's installed aside from that.

Hit Man X · #10 11-16-2007, 09:05 PM

1. Solid Green
2. White
4. Brown
5. Green with yellow tracer

2phast · #11 11-19-2007, 06:57 PM

I don't know, sorry, I took my speed signal directly from the ABS coax cable in the engine bay

Hit Man X · #12 11-19-2007, 10:06 PM

No prob, I'll do a follow up on it when I finish. Probably tomorrow.

Hit Man X · #13 11-30-2007, 03:32 AM

I haven't forgotten guys. Alt died on the 560 then left me stranded as the battery took a dump too

mia · #14 12-08-2007, 08:15 PM

keep us posted

stummala · #15 12-29-2007, 07:34 PM

it is NOT similar to the one in the 400E. The W124 400E/E420 get first gear start from an extra pin that is active in the LH control unit and utilize a basic 5-pin relay for activation. The 002-545-41-32 uses speed signals to engage a power output to the kickdown solenoid, thereby engaging first gear.

Also, the 002-545-41-32 FGS unit will NOT work in any 6-cylinder cars period.

Satish