Procedure has the following requirements to start

• Original unit in the vehicle.

• In the vehicle by OBDII for reading

Read and save VGS-NAG3 FBS data procedure

1. Connect to the vehicle - In the vehicle by OBDII for reading

2. Open the Mercedes FBS4 software

3. Select TCU

4. Press “Info” button to establish connection

5. Press “Save” button to read and save the FBS data

Once the reading is complete and the file is saved, please make sure you also make a back-up of the Configuration data of the unit as follows: TCU > “Utilities”> “Save All Config Data. This data together with the FBS4 data will let you personalize a unit.

Personalization procedure

1. Set up the donor unit on bench, using ZN151 DS Box and CB403 - DS-BOX Extended Cable Set for direct connection. (Connection information available at the end of this section)

2. Open the Mercedes FBS4 software and select TCU

3. Press “Info” button to establish connection

4. Set the unit to “Virgin” state trough the dedicated button.

(From this step on, or if you already have a virgin unit, you can proceed working in the vehicle via OBDII and internal CAN connection)

5. Press “Personalize” and select the file with the saved FBS data from the original TCU.

6. Software would ask you to turn IGN OFF and ON to finalize the procedure

7. Program the configuration data by pressing the “Utilities” then “Program All Config Data” and use the files saved from the original TCU.

8. Set the VIN

9. Use the “Program” button in case you need to align software versions.

N.B. Unit activation happens automatically after 100 ignition cycles.