Airbag control unit with part number 38910-55R30

What does the airbag control unit 38910-55R30 do?

The airbag control unit 38910-55R30 is the central control unit of the SRS for Suzuki. It evaluates the crash sensors, decides in an impact whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. If it detects a fault, the airbag warning light lights up.

Triggering takes place within fractions of a second, as soon as the evaluation requires it. After a crash, the unit stores crash data in its memory and is locked afterwards.

The system therefore belongs to the safety-critical components in the vehicle.

Why does the control unit 38910-55R30 fail?

Stored crash data is the most common cause, even when no airbag has been triggered. A normal diagnostic tool cannot remove it. Additional causes can be aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The entries from the accident remain stored in the control unit, with nothing visible from outside.

The other causes relate to ageing, moisture and electrical loads. A cold solder joint can cause contact problems that show up gradually.

A weak battery or a jump start can cause voltage spikes that stress the electronics.

How can you tell that the 38910-55R30 is defective?

The airbag warning light in the instrument cluster lights up permanently or only intermittently. At the same time, an error message appears in the instrument cluster, and the diagnostic tool receives no connection to the control unit. In addition, the fault memory cannot be erased.

These signs affect the restraint system directly, which is exactly the function that matters in an emergency. Airbags and seatbelt pretensioners may therefore possibly fail to deploy.

Have the warning light checked promptly.

Which vehicles is the 38910-55R30 fitted in?

The control unit 38910-55R30 is fitted in these vehicles: Suzuki Swift RZ/AZ (2017-2020) and RZ/AZ Facelift (2020-2024). The decisive factor is this unit's part number.

These models are assigned to the unit:

• Suzuki Swift RZ/AZ (2017-2020)
• Suzuki Swift RZ/AZ Facelift (2020-2024)

Comparing the part number on the label of the removed unit with this page merely confirms the unit. Have the fault memory read out first. Only this result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 38910-62J12-000, 38SC001R9RH.

How does the repair of the 38910-55R30 work?

First have the fault memory read out and enclose the log, then disconnect the battery. Only after that remove the control unit and create a repair order online.

Then send the unit in well packed. At Airbag24 the unit is checked on the test bench, defective components are replaced, crash data is erased and a function test is carried out. Checking, repairing and testing take 3–4 working days as a rule. The unit then comes back to you.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 38910-55R30 get to Airbag24?

You send the control unit 38910-55R30 as a parcel, or book a UPS collection for an extra charge. The return is made by UPS.

Enclose the printed repair order and pack the unit shockproof.