CG FC200 ECU programmer can support mileage repair for Volkswagen Bosch MED17.5.25, ME17.5.22, and MED17.1.27 ECUs. Need to update the software to V1.2.3.0 or newer. Below is a step-by-step demo guide for mileage correction on a VW MED17.5.25 ECU.

Vehicle Info:

Model: 2015 VW Sagitar

ECU: Bosch MED17.5.25 TC1782

Original Mileage: 179,200 km

Step-by-Step Guide:

1.Run CG FC200 Software

Select VW > Bosch MED17.5.25 TC1782 > Platform Mode.

2.Check Wiring Diagram

Two versions of pinouts are available; follow the diagram for your setup.

Required connections:

• 7 Wires:
• 2x RED (12V Power)
• GND
• CAN-H and CAN-L
• GPT-1 and GPT-0

3.Connect and Identify ECU

Connect the ECU to the FC200 device according to the wiring diagram.

Use the software to Identify ECU.

4.Read and Save Original Dflash Data

Select Read Dflash.

Save the original Dflash data as a backup.

5.Process Data for Mileage Correction

Go back to the main menu and select VW > Bosch MED17.5.25 TC1782 > Data Process.

Choose ECU Mileage Repair Function > MED17.5.25 ECU.

Load Dflash: Upload the original Dflash data you just read.

6.Modify Mileage

The software will automatically detect the original mileage, which should closely match the actual value.

Enter the desired new mileage.

Save the new mileage data.

7.Write New Dflash Data to ECU

Go back and select the ECU.

Use Identify ECU and then choose Write Dflash.

Select the new mileage data file and confirm to write.

Ensure the original data is backed up before proceeding (this was done earlier).

Write operation should complete successfully.

Once completed, the mileage correction is done by CG FC200, and the ECU will reflect the updated value.

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