How to Perform Hyundai ME17.19.21.1 IMMO OFF with FormulaFlash

 FormulaFlash programmer supports IMMO OFF functions for Korean Kia Hyundai ME17.9.21.1 ECU in the device without 3rd party software/devices.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Quick search for ME17.9.21.1 ECU. Available on bench and boot mode.

Choose bench mode connection.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash
Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

There are 4 versions of bench pinouts for this ECU.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Select one that matches your ECU.

Set up bench connection according to the diagram.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash
Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash
Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Connect ECU.
Read and save eeprom & flash data.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Click IMMO Off function.
It will save flash again.
Then do IMMO OFF.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Click Yes to correct checksum.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Then process data.
Write data successfully.
It’s done.


Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash
Hyundai ME17.19.21.1 ECU IMMO OFF by FormulaFlash

Install ECU back to car.

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