Pagz

I always thought no W202 had ME2.8, however I found in MY01 japan market C240 and C280 had ME2.8!.

TCU is A030 545 23 32, used in ME2.8 W210 E55, CLK55 and very last C43 wagon. This TCU also used in lots of other W203,W220 etc.

ECM is A112 153 31 97,Also used in W211,209,203,220 etc..

Cluster and ESP also updates specially for 01 ,I assume for the data speed changes.

I ran SDS on ME 2.8 recently - could believe sooo much faster than ME2.0 through menu's!

This might be useful for guys doing conversions/ rear axle changes etc..you would need lots more parts though

cm60k

Good info.Paul,

My friend also got 2000 C220, his TCU/EGS51 had toasted, because of ATF oil..!,

he went to the dealer, and they replaced:-

*ECU from ME2.0 to 2.8, #: "026 545 44 32",

*TCU from EGS51 to 52, #: "030 545 30 32"..

ZAYED,,

Pagz

Hello Zayed,

Very interesting, I thought ME2.8 ECM always start with A113 A112 etc?

TCU 030 545 30 32 sounds like newer version of 24 32, I must update my EPC ,

Does your friends C200 have code 801 on plate(or do you have his VIN?), if not maybe cluster and ESP does not need updating??...these do update for clk55,E55 at the ME2.8 change over

cm60k

Hi Paul,

Not sure for SA plate code,,

first version of ME2.8 comes with "026/028/029/030", but MB not put there # for not copying their file..!

ZAYED,,

Pagz

Zayed,

I have donor 00 C43 chassis, is has the last ECU; 026 545 31 32 ME2.0

This ECU is listed for tip C43 and E55 only, however I erased the code and found it also accepts CLK55 code 073 014 058 ?!...

Assuming it has CLK55 maps next I will install with EIS and test, because I have 2.82 It should all work ok!?..then my rear windows will finally actuate

I found erasing coding stores fault "coded for manual trans, auto is fitted",I wish I knew what the factory 16x3 code strings were we could do much more with these modules

Paul

cm60k

Sure Paul,

you can find "026/028/029/030", as ME2.0,,

if it the last version of (12/99>>02/00), with Euro code: "-U72" or Japan code: "B98C"..

ZAYED,,

Pagz

Thanks Zayed!

Why MB make it so complicated

cm60k

>>>..They want you to be CRAZY, when you even think about their own magic..

6spd

Hey Pags, I'm looking to convert my 55 to 3.07 rear end like the c43. C43 and e55 have the exact same tcu for my2000 with different ratios. I need to figure out the version code of the tcu. Then I can have them swap the version code on my tcu to the c43 profile. Do you have access to STAR?

Pagz

Hello, Good point I will check for you next few days with SDS, will the shift points be same for E55 and C43?

Zayed may know already?

6spd

Not positive, I imagine yes. Reason being is the trans gear ratios are all the same from 1-5. And when people swap c43s to 5.5s they have no issues with the trans at all so I think it would be fine.

cm60k

Paul got donor CLK55 & swapped everything to his great C43 with ME2.8 & 2.82 diff. & TCU..

As i know; SDS & SDS developer can access the ratio map through the ECM/TCU module, with a DAS signal to the ECU file,

C43 has a differ shift point ratio/RPM than E55, that saved as a shift bearing point at the TCU,

but in some versions of TCU, MB guys put the same part # for both C43 & E55, to avoid playing with their non-programmable TCU/file,


*you can get C43 ECU/TCU/with key infrared, and 3.07 diff., then use SDS/DAS to adapt & calibrate them,,

or you can use standalone system to the TCU, that will make it work, but need more work & more $$$$..

ZAYED,,

6spd

Would not mind different shift points of the C43 TCU as long as it wasn't turbulent or malfunctioning. They may shift at slightly different points but I'm ok with this. Also I believe it would be a bonus as the c43 redline is a little higher. If 5.5 c43 guys have had no issues with shifting I shouldn't in theory.

So my options would be to upgrade to an e55 TCU 2.8ME and adjust Ratios via SDS developer?

Or find a 2000 c43 TCU and sychronize it to my car. I thought this would be easiest except I can't find a 2000 C43 let alone TCU with them being so rare. Which is why I was asking for the TCU version code, as I can probably reset it to factory C43 parameters. I know you can't reflash the ME2.0 but I think I'd be able to select a different version code for the c43 as they use the same unit.

cm60k

2.82 has a larger RPM bearing ratio,

that's why when you put 5.5l with stock 3.07, RPM will hit the limiter, and NOT goes to the next shift point quickly, it's one of the most important point, that C43 ECU will not accommodate accurately with more displacement liter, during to the shorty diff. ratio, and the back signal from speed sensor to the TCU/data..!!

ZAYED,,

6spd

Ahhhhh I see what you mean now. My car does that every once in a while with the stock 2.82. So if I Upgrade to EGS52 like a 2002 e55. I could change the ratio through SDS/DAS?

Pagz

Zayed,

Maybe I can read TCU coding with SDS/or SDS Developer at least we will know what the code for C43 is and maybe he can try/test it

TCU is egs51 021 545 88 32, only used in 00 C43/early ~00 E55 touchshift.

I am not near the 00 C43 but will be in next 2 days ,will know more then...

cm60k

Yeah sure, if you go with EGS52, it will be easier to change the ratio through the ECM via. SDS, but honestly forget the process..!

ZAYED,,

cm60k

Sure Paul,

you can read the code through SDS/SDS Developer,

I used EGS51 #: "021 545 84 32", then i replace it to "026 545 75 32", which is the last updated #,,

you have to know; MB put the same TCU part # in "C43/CLK55/E430/E55", as a differ countries spec. & differ versions of ECU/TCU data file..!

ZAYED,,

6spd

I thought many cars use the same tcu/egs also that the data profile for each model was preloaded on them. Then through the initial synchronization you select which model info you have?

Pagz

Epc shows Jp,NA and standard E55/C43 prior to me2.8 shared these TCU's?(through 98/99/00)>

I think what Zayed is saying is while these may share the same TCU, epc does not show coding for them specifically, so the coding must be transferred from exsiting module, or coded by VIN at factory?..if so there could be different codes for various markets with same part# ... usually epc states that coding is nessasary or if not possible additional info must be supplied but i found no information about this there

Here is the coding for Japan market 00 C43 TCU, for what its worth this market does not have air injection or secondary O2's unlike the NA markets.

6spd

Wow thanks a lot! I think this is all I may need. And the emissions stuff probably shouldn't make a difference on the tcu, but we will see. Ill report back when I try to have them swap the version. Thanks again Pagz!

cm60k

Good info. Paul,

yeah, this is Exactly what i meant,

starting code digit of (8 or 9) refers to the last version of TCU/EGS51, AK/3UP, and last digit of (7 or 8) refers to the ECU bearing signal with code: -S9BE,,

which i believe; production of this C43 should be in the beginning of Fab/2000.!

*if i'm NOT wrong; (Japan & S. Africa), doesn't come with Emission components, even with MY 1998..!?!

ZAYED,,

Pagz

6spd, no problem, Hopefully it works out for you..

Zayed, Thanks!, Yes production is feb/2000 , I think most 202 from ~F89**** are 00..

Interesting, how did you work out which numbers refer to bearing?(shaft speed?)

also what is S9BE?

I think mostly only NA markets had strict emissions with 4x 02's, air pump etc ?

cm60k

Paul,

Every diff. Ratio, got a special code #, that saved in Technical data/sheet & ECU/TCU files,

(-S9BE) code refers to the final bearing Ratio of (3.07:1), with bigger gear & pinion..,,

usually; (4) O2 sensors comes for "U.S/Canada/Australian", as a locally Environment rule of each cities, in those countries..!

in some cases; they import cars without Emission components, and use it as it is..!!

ZAYED,,

Pagz

Thanks Zayed

Does diff ratio code effect ECU calculations?

Maybe emission rules were introduced after W202, 208 etc in Australia, NZ/Aus has same market and never seen emission parts in this era of MB,however I learn new things every day here