Hyundai Kia ACU Code

VIN to ACU (4-Digit Airbag Code) Online Service

Has your car been involved in an accident?

Airbag ECU or SRS module is replaced by a brand new one, but the airbag light is still blinking?

Do you have " Variant Coding " or similar errors in the scan tool?

We provide reliable and fast service to get the exact ACU Variant Code from your VIN.

What is an ACU Code?

The ACU code (also called Airbag Variant Code / Configuration Code) is an alphanumeric code (Usually 4-Characters) used on Hyundai, Kia, and Genesis vehicles to set the correct variant/coding of the airbag control unit (ACU/SRS).

It tells the module what equipment the car has (airbags, seat sensors, pretensioners, market/region, etc.). You typically need it when:

Replacing a used/new ACU after a crash
After clearing the crash data or reprogramming
When the ACU loses coding during low-voltage or software updates

Without the valid ACU code, you can see airbag lights, DTCs, or features that don’t match the car.

How to Get Airbag Variant Code (ACU Code) and How Does It Work?

Send us the VIN of the car.
We decode and verify the ACU configuration code for your vehicle.
You receive the Correct ACU Variant Code matched to your VIN + entry steps.
Enter the code in your scan tool and clear DTCs

Important Note: We provide short instructions for entering the code with common tools (GDS/KDS, Autel, Launch, etc). Entering an incorrect code may permanently damage the ECU and cannot be reversed.

What Is the Turnaround time?

Typical turnaround: Up to 30 minutes during business hours.

Why Choose ARMHEX?

Specialized in SRS/ECU coding with high coverage across Hyundai/Kia/Genesis
VIN-matched codes to prevent misconfiguration
Tech support from people who actually work with ACUs daily
Save time & rework. No guessing, no trial-and-error coding

Guarantee and Technical Support

We stand behind every service we deliver. Your satisfaction and confidence in our digital solutions are our top priorities. That’s why we provide fast, expert-level technical support to ensure everything works exactly as promised.

Since the code is directly read from the HYUNDAI/KIA Dealer server, it is 100% correct. Hence, any failure doesn't depend on the ACU code.

However, we always give customers common reasons that the code may be rejected by the scan tool and help them fix the issue.

To get "Airbag Variant Code ACU Code", check coverage, or ask any questions, please contact us via email or WhatsApp.

WhatsApp:

+1 (747) 229 6694

+1 (657) 229 1838

Email: contact.armhex@gmail.com

Interested in more tuning services?

Check out ARMHEX Automotive software services here.

How it works

Step 1: Select the car and the desired service

Step 2: Upload and send us the original ECU file