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.
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
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
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.
Turn ignition to ON position
Press OK button to continue.
Check for ACU/SRSCM variant coding code of the same VIN number first from vehicle manufacturer
Manually enter 4-digit ACU coding code and confirm
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
Airbag fault code 1 was successfully reset
Airbag fault code 2 was cleared as well
Reset ABS code okay
No more fault code exists.
Done.
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