dzmitry

I do ECUs codding for free, so ping me once you ready for the build

S_Holford

I'll keep that in mind, thanks!

dzmitry

Tested ECU coding on w203 C55

beckstyle

Thank you very much for all that information.
And please keep us updated according the coding.

i just finished converting my 2001 R170SLK230Kompressor to 32AMG engine with manual gearbox.

In my case I can start the engine without gear selector module as long as the Gearbox-ECU stays connected.

But Engine ecu does not activate supercharger-clutch and limits throttle body opening to 30%

i tried several things (let the gear selector in and switched to D as soon as the engine runs etc) but no succes :-(

dzmitry

You are very welcome!
I'm sure your slk swap is awesome! I was thinking of swapping 32 engine myself but I'm in love with v8 sound .... so had to change plans for 5.0 swap
As for the coding: I did c32 ecu coding recently, unfortunately the car's owner still can start his car (not because of the ECU coding ) but after the coding he was able to crank the engine with unplugged TCU and shifter module, it means that it accepted the coding. Plus in my previous post I attached a video where I did the same codding on c55 (the same Bosch ME2.8.1 ECU as yours). As for the supercharger clutch .... yeah ... I had concerns that It might happen because the ECU getting information regarding to selected gear not only from shifter module but from TCU as well, so I'd imagine that even if you "shift" your sifter in D your TCU won't confirm that (TCU suppose to get this information from the conductor plate). I still hope that configuring ECU to manual should eliminate this problem. If you want you can ship you ECU to me and I'll do the coding at no cost (I don't think that shipping even from outside of the US will be too expensive). If it's not an option i think we can work together and adopt my TCU emulator to work with your car, all you'll need for it is Raspberry Pi and CAN module (e.g. mcp2515 + mcp2551), it's very simple and no soldering required

dzmitry

Forgot to mention two more options:
1. Install fixed SC pulley
2. Add simple switch to engage SC clutch (I'm pretty sure the clutch simply controlled by ground)

beckstyle

Thanks for your fast answer and sorry for my bad English, I am writing from Germany.

I hope the conversion will make lots of fun.
it was a bad *** to get the wiring correct from my oem-4zyl Siemens ecu to the new Bosch ECU. Hat to rewire 56 cable just for engine ecu.
mans I used the newer-style gearbox from w204 (Reverse up left). It was bit hard to get the bouilt the shift linkage to fit in my car.

For start procedure:
i have three TCU, EGS 51 (which was oem in my car, even my slk is a facelift Tiptronic Modell), EGS 52 from the donor 32AMG, and EGS 52 with modded C55-Software that I used with my old 230K engine.

It starts only with the egs51 when gear selector module is disconnected.
With both egs52 it needs gear selector connected and in N or P to start
strange thing is that my cruise control is working without issues.


I thought about a „fixed“ SC-Clutch, too.
you are Right, it gets + from „Klemme 87ME“ and ground from ECU.

But I can see in the log that the ECU limits throttle position to about 30%, too.
That means that the car is very very slow at the moment :-(
But i will try to activate it by grounding the cable and see if this brings a difference.

i tried to activate the SC clutch with a diagnostic computer system. It works When standing still but the diagnostic Programm aborts that when starting to drive.


I hope to get a functionable Star-Developer System in the next two weeks.
(if not, I would be happy to ship my ECU to you)
Could you been able find the correct coding for the M2.8.1 after the video?

beckstyle

Do you think your CAN Module can fix all TCU messages that ecu will activate „full throttle“ and SC-Clutch?

(but like you said, I will try coding first)

dzmitry

If I understand correctly egs51 doesn't require shifter to be connected simply because it's using older style shifter where it's connected to TCU directly (it should use simple resistive matrix which is decoded by TCU), and newer TCUs are relying on the Shifter to send data over CAN bus. I think with slk32/c32 ECU you don't need to connect TCU at all, simply connect shifter and it should start, I know it worked for c55 and c32.
As for TCU emulator, yes it should work, but it will require some tweaking. Right now it sends data fake data emulating CAN messages from TCU and Shifter module saying that it's in Neutral, but I can try to emulate Drive mode as well.

beckstyle

My car is one of the first facelift models.
It has the newer style tiptronic selector and gearbox but they used egs51 for the first months.

the selector has a “potentiometer” in to see in which position the selector is.

electric wiring and CAN is 100% the same, I bought an egs52 (that time for modding the TCU Software) and it worked perfect without any rewiring/coding etc.

your are right, of course:
Car starts without any TCU if gear selector is in and neutral or park.
But I get bas-esp error without TCU.

beckstyle

I can take pictures from gear selector disassembled if it helps or is interesting

dzmitry

Yup esp It should be communication with TCU error (I mentioned that in this thread), but it's not critical, I've been driving with that error for couple of months and ABS/ESP module was working correctly even with this error. I tried to dig a little bit in how Mercedes ABS/ESP module works before my swap and I'm pretty sure that it doesn't care about TCU at all.

beckstyle

Do I understand correct that you do not get this error from esp after coding the engine ecu to manual transmission and select TCU not fitted?

Could you find a way to code that in the c55 ecu?
it was not possible in the video?

I hope to get a working star das in the next two weeks or so

dzmitry

Yup that is correct. To be hones I feel like this error is thrown by EZS (ignition switch, which is CAN master/gateway in smaller Mercedes cars) and other modules pick up that error. For instance ECU shows it only as "Information" and as an error, ABS/ESP module shows it as an error.
EZS asks ECU which modules should be present in the car (drivetrain related modules) and then if i doesn't see CAN messages from particular module it throws an error.

You are right, i didn't work on that c55, but I have an idea how to resolve this issue, I'll test it soon on another C55 ecu

beckstyle

I tired to permanent activate the SC Clutch today.

It did it work. Clutch is active but ECU goes in fuel cut from more than ca. 30% Throttle pedal.

dzmitry

I have two ideas here:
1. ECU doesn't like that TCU is not sending correct transmission oil temperature and to prevent transmission damage it goes into "Load limit" mode. Do you see any error codes?
2. TCU is sending a request to limit load to the ECU since it can't get analog data from a conductor plate.
Does this problem occur when a TCU connected along with a shifter module? Does it happen with all TCUs (you said you have 3 of them)? Have you tried dyno mode (in dyno mode ECU might skip some limitations, it's very simple google how to engage dyno mode)?
I still believe that once you re-configure you ECU to be a manual it should eliminate this problem.
BTW for you swap you got ECU and ignition switch from the donor car, right?

beckstyle

I think it must be something that ecu goes into a kind of limp mode.
It revs to redline when moving, but i can see in OBD live data that it limits throttle opening to 30%

this is the same with all three TCU, without TCU, with or without shifter module. I tried every variant of it.

I will post a error code list tomorrow.
but all codes in ecu refer to code in tcu

my car is a r170, i think it has no dyno mode.
It has the old FBS2 immobiliser system, the ignition switch is just a switch.

I just had to use the key(transponder) and the immobiliser-ecu along with the engine ecu.

dzmitry

Interesting.... i thought that all slk32/c32 are using DAS3... Anyway ping me once you receive your Star system. BTW we probably can move your conversation over to PMs

ffc1971chris

You sound like the type of guy that would know the answer to my little problem. I'm change the diff ratio on a 2003 616 sprinter van. Do you know if the standard 5 speed manual has a ECU and if it does will it need recoding for the speed sensors.

dzmitry

Unfortunately i'm not familiar with Sprinters, but it it's using the similar manual transmission (I know that 6 speed manual Mercedes was using 716.6 event for Sprinters) then it doesn't have speed sensor (you can easily confirm this under the car: if you have more than one connector on the transmission then most likely it has speed sensor). If there is no speed sensor then your ECU collects speed information from ABS sensors and in this case the only thing diff ration change can affect it's your Cruise Control. When I swapped my differential ration from 3.45 to 3.27 on my car (already with manual transmission) my cruise control started acting very weirdly (most of the time it wasn't working), but recoding ecu to 3.27 gears fixed it. I'd imagine similar behavior will be for you car.
Also there is one more option for a speed sensor, older Mercedes (like w124) had speed sensor in a diff case, but I think even in this case it should be fine.

BF_JC230

Would anyone here be interested in purchasing an illuminated shift knob from me?

I purchased one as part of my ambient light project and chose orange as the color of illumination. It is not right. Mercedes is much closer to yellow, is yellow. (I’ve been testing...)

So, I can’t in good faith charge the illuminated cost, but ideally I’m looking for the non illuminated cost...

It’s brand new...just had a bench test of the LED color...

https://www.innovativcar-tech.de/en/.../98-ledcolor-x

jayrasheed

was it reverse light to connector 10 pin 6? Or is it clutch switch to that pin? Need to know how to get reverse working mate on a swap I made.
a c 55 AMG with a six speed from a 204.

dzmitry

Reverse light - Connector 10 pin 6
Clutch switch - Connector 10 pin 9

jayrasheed

Thank you mate!

dfreret

15. Shifter boot parts (rubber + plastic) 203-267-16-88, 203-267-01-97, 170-267-01-97

203-267-16-88 - Seems to be discontinued. Is there another part number that supersedes this one ??