Hyundai Sonata 2016 Airbag ACU Variant Coding with Launch X431

Background:

The airbag indicator flashes on a Hyundai Sonata year 2016 after replacing the airbag module.  Launch X431 V scanner gives a ABS code and 2 SRS fault codes.

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Hyundai Sonata ACU (airbag control unit) coding:

Preparation:

Airbag coding code  is required during coding progress. ACU/SRSCM coding code: combined of letters and numbers in 4 bytes. You can get the srs coding code from your vehicle manufacturer or online pincode calculator, i.e superpincodes.com by entering car make, unit type and VIN

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Here we’ve got the 4-digit coding code.

In Launch X431 diagnostic system, choose Hyundai->16pin->press Airbag fault code (Event #1)->Special Function->ACU/SRSCM Variant Coding

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This function is used to after the setting of ECU according to its specification when an ACU/SRSCM is replaced.
Turn ignition to ON position
Press OK button to continue.

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Check for ACU/SRSCM variant coding code of the same VIN number first from vehicle manufacturer

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Manually enter 4-digit ACU coding code and confirm

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Launch X431 Variant Coding is completed.

After the Variant Coding process, please make sure that the ACU/SRSCM information corresponds with the rear car information.

Check the fault code

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Airbag fault code 1 was successfully reset

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Airbag fault code 2 was cleared as well

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Reset ABS code okay

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No more fault code exists.

Done.

 

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