Replace M112 (E24) with M112 (E32) in W202
The original control unit (ME 2.0) has been used with the modification of wiring/plug to the control module.
- How can I check if the TCU/ECU program has been flashed / coding is correct to E32 version? I have STAR C4.
- Do I need to change the differential ratio in order to gain more response

?thanks.




*no need to change gearbox. both sharing the same out-put, which is:-(A330Nm/tq)..!
*while you have ME2.0 & EGS51, can't change the diff. ratio,,
have to stick with your Exist ratio, which is 3.67:1 or 3.27:1, while E320 uses 3.07:1..

ZAYED,,
I used STAR C4, I cannot identify the new changes.
Do you mean EGS51 cannot work with 3.07? Can I just change to 3.07 and the control units shall adjust themselves?
*no need to change gearbox. both sharing the same out-put, which is:-(A330Nm/tq)..!
*while you have ME2.0 & EGS51, can't change the diff. ratio,,
have to stick with your Exist ratio, which is 3.67:1 or 3.27:1, while E320 uses 3.07:1..

ZAYED,,




"020 545 99 32" is the old version of MSG/ME2.0, MB replace it to "023 545 96 32", then replace it again to last # which is "026 545 65 32",,
in the V8 its impossible to change the ratio with EGS51, but while you have V6, you can change the diff. ratio, cause you swap the Engine from V6 to>>V6,
the engine size has a bearing/RT, saved on the EGS module, just you have to adapt your ECU with new ratio..!!
ZAYED,,
"020 545 99 32" is the old version of MSG/ME2.0, MB replace it to "023 545 96 32", then replace it again to last # which is "026 545 65 32",,
in the V8 its impossible to change the ratio with EGS51, but while you have V6, you can change the diff. ratio, cause you swap the Engine from V6 to>>V6,
the engine size has a bearing/RT, saved on the EGS module, just you have to adapt your ECU with new ratio..!!
ZAYED,,
Does it relate with ASR ABS?
My VIN starts with WDB2020262F747xxx.
I tried to replace it with the differential from w202 c220 3.07 with a sensor attached to it. It turned out badly , ran only 3-speed, 80km/hr with the weird noise from the engine. It wouldn't change to 4/5th gear.
I swapped back and it works normally.
Any suggestion?
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you should get diff. & TCU from same year of your C200/C220,,
after install them together, you have to code your ECU to accommodate new diff. ratio..!!
ZAYED,,
The Best of Mercedes & AMG
ECU 0235459632
TCU 0205459932 EGS51
Is there any setting that can be accessed by SD connect C4, or I need coding thru MB online?




put them together, then Reset the whole system, your ECU should to manage the signal from the TCU,
but before that, you have to try to put any other TCU, and start the car, if its fire-up, means, you can do all things mentioned above,
if it not fire-up with other TCU, you should to get a special coding from the dealer to make it work,,
*SDS/C3/C4 will not able to adapt new coding with M2.0/EGS51..!
*We swapped Diff. & TCU for my friend's 98 CLK320, from 3.07 to 3.27, last year,
it woks fine, without any issue, with only ECU Reset..

ZAYED,,



