If I am thinking correctly, the ECU part number actually changes depending on the software flash. Can anybody confirm or deny that? In other words, I think an ECU with the F37 flash preloaded would be a different part number than the original ECU?

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Matt B.

05 Limited CRD. Bought it new. 112k on the clock now.

GDE Eco-tune, rear differential drain plug (drilled and tapped the pumpkin), transmission pan drain plug, Fumoto oil valve, fuel filler neck restriction removed, front hitch, Hayden fan clutch, Sears P1 battery since 08, Mobil 1 5w40, 5 volt glow plugs, DIY timing belt at 109k

I think you are correct. Let me look into my library when I get to work and I will post some definitive info.

E

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2006 Liberty Sport CRD
Born on 2-6-06, Purchased on 4-21-06
Everything Stock...for now.

PM MrMopar64 ... he will be the one who knows...I do not think that flashes affect part numbers whatsoever. I think the ones for the 05-06 CRDs are the EDC16C2.x

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Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph

According to the service info, the VIN is what is driving everything.

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2006 Liberty Sport CRD
Born on 2-6-06, Purchased on 4-21-06
Everything Stock...for now.

You have to get your VIN burned into any new ECU (or used)

_________________
Founder of L.O.S.T.
2006 CRD Sport
Mods: GDE Hot Tune w/ 364#@2000rpm/Air Box /3" Str8 Exhaust/ASFIR Alum Skids/245-75R-16 Cooper STT PRO/OME LIFT w/Clevis & 4 Spring Isos/AirTabs/Rigid 10" S2 LED/4xGuard Ctr Matrix Bumper
Drag Strip:Reac=.1078_60ft=2.224_1/8=10.39@64.8mph_1/4+16.46@80.8mph

Yes I know. That is why I said the VIN drives everything. Sorry for the confusion.

_________________
2006 Liberty Sport CRD
Born on 2-6-06, Purchased on 4-21-06
Everything Stock...for now.

Each SW release delivered has a unique part number. I would be of the impression that that P/N as read by the StarScan would be different after the TSB flash since it's writing the entire SW over again. The purpose of the VIN is for security features such as the immobolizer and gets communicated between modules to verify that everybody is in the correct car, so yes it'll need to be re-entered in the ECU if a new one is installed.

As for the F37 update, no one I've talked to has any knowledge of new SW for the ECU, just for the TCM, so you might not find a new P/N for the F37 flash.

Also, all "new" modules are supplied by Bosch with the locked SW already loaded on them ready for installation in vehicles during plant builds. It's not uncommon to find vehicles being reflashed with new SW in-plant during end of line tests, so you might not find "new" modules with the latest updates on them already installed.