MB CR3.44 how to immo off any way to do that ?

upload eeprom,renew and teach with star diag

Hello i use MPPSv21 to make copy ecu. Any one help witch immo off egr off ?

Hello here is my ECU full bakup. Any one can help witch immo off.

CR3.44
Bosh ED16C/C2-7.x MPC
A0014469130
Hardware 3904
Software 1407

A6461500391
0281012225

I need that immo off becouse that engine om646 and 6 speed manual gearbox Goes to my Old Nissan Cabstar also need egr off

Yes i have C4 and Xentry Openshell i Javę winols too but dont nów how

bluen47 said:

Yes i have C4 and Xentry Openshell i Javę winols too but dont nów how

Click to expand...

Good — you have the right tools. Let me give you a practical step-by-step plan.

Step 1 — IMMO OFF in WinOLS

Since this is standalone (no EIS on the CAN bus), you need to find and disable the IMMO routine in the flash.

Open your file in WinOLS:

• Load the mercedes om646.bin as Bosch EDC16C2, MPC5xx, 1MB flash
• If you have a DAMOS/A2L for this SW (1037372414 / P467), import it — this will label all maps automatically
• If you don't have DAMOS, you need to search manually

To find the IMMO flag manually in WinOLS:

Look in the data/calibration area (typically 0x70000–0x80000 range). You are looking for a single byte that controls IMMO mode. Common patterns on EDC16C2:

• 0x01 = IMMO enabled (factory)
• 0x00 = IMMO disabled

A known method for EDC16C2 Mercedes: search for the byte sequence related to the IMMO status. In many EDC16C2 files with this SW family, the IMMO enable byte is near the CAN configuration area.

However — since you are new to WinOLS, I don't want you to раtсh a wrong byte and brick the ECU.

Safer approach — use your tools together

Since you have Xentry/DAS + C4, here is what you can do before putting it in the Cabstar:

While the ECU is still on the bench or connected to a test harness:

1. Use Xentry to read the ECU and confirm all current coding/adaptation values
2. Note down the current IMMO status and all SCN codes
3. This gives you a baseline to revert if needed

Step 2 — EGR OFF in WinOLS

This is easier and safer than IMMO. In WinOLS:

1. Open the file and look for maps with axis values that match typical EGR parameters (RPM vs load/injection quantity)
2. You are looking for 2D or 3D maps where values go from 0 to ~100% (EGR valve position target)
3. Set all values in the EGR target position map to 0
4. Set all values in the EGR PWM/duty cycle map to 0
5. If there is a DTC enable map for EGR, disable it to prevent fault codes

What I need from you to help further

Can you do the following:

1. Open the file in WinOLS and tell me if WinOLS automatically recognizes it and finds maps. Does it show a map list or is it blank?
2. Check if you have a DAMOS — in WinOLS go to File → Search DAMOS online or check if your WinOLS installation has a matching DAMOS for Bosch 1037372414
3. Screenshot the map list if WinOLS finds maps — post it here and I can identify exactly which maps are IMMO and EGR
4. Do you have the full wiring diagram for the OM646 ECU? You will need to know which pins to wire and which to leave disconnected for standalone use in the Cabstar

Once I know what WinOLS shows you, I can guide you through the exact maps to modify. Don't change anything in the file until we confirm the correct locations.