How to Repair the BMW FRM3 Module Using Launch X431 IMMO Plus and X-Prog3

In this guide, we’ll walk you through the process of repairing the BMW FRM3 module (footwell module) using the Launch X431 IMMO Plus. This tool now supports one-click repair for FRM modules, including the FRM3R module (9S12XEQ384 3M25J) used in BMW E87, E92, and E93 models.

Tools Required:

• Launch X431 IMMO Plus
• X-Prog3 Programmer
• Soldering equipment
• Vehicle with a faulty FRM3 module

Step 1: Prepare the Connections

Ensure all your tools are connected properly:

1. Solder the cable to the FRM3 module.
2. Connect the cable to the X-Prog3 programmer, and then to the Launch X431 IMMO Plus.

Step 2: Read the Chip ID

Once the connections are set up, power on the system:

1. Select “Read Chip ID” on the Launch X431 IMMO Plus.
2. The ID should read successfully, confirming the connection is correct.

Step 3: Check the EEPROM Data

The FRM3 module often loses EEPROM data due to low or insufficient battery voltage. Follow these steps:

1. Navigate to the “Backup EEPROM Data” option.
2. You’ll notice the partition shows as zero, indicating the EEPROM is empty and corrupted.

Step 4: Repair the EEPROM

Now it’s time to repair the corrupted EEPROM data:

1. Click on the “Repair” function in the Launch X431 IMMO Plus.
2. The tool will read the flash data and create a new EEPROM file automatically.

Step 5: Confirm the Repair

Once the repair is completed:

1. Check the EEPROM data again. You should now see valid data populated in the EEPROM section.
2. The FRM3 module is now repaired and should function correctly.

Conclusion

With the repair process complete, your BMW FRM3 module is now restored and operational. Using the Launch X431 IMMO Plus and X-Prog3 programmer, you’ve successfully repaired the module with minimal effort.