Airbag control unit with part number 38910-71L21

What does the airbag control unit 38910-71L21 do?

The airbag control unit 38910-71L21 controls the restraint system (SRS) of Suzuki as the central unit. In an impact it evaluates the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered.

In addition, it checks the system for faults continuously. It shows any faults it finds via the airbag warning light, so that the driver can see them.

After an accident the control unit stores crash data and is locked afterwards.

Why does the control unit 38910-71L21 fail?

Most often the cause is crash data from an accident, even if no airbag was triggered. Otherwise aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes such as those from a weak battery or a jump start may be to blame.

The crash data remain in the memory, and a normal diagnostic tool cannot delete them. At Airbag24 they are deleted during the repair.

Which of the other causes applies in an individual case can only be clarified by reading out and testing.

How can you tell that the 38910-71L21 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, an error message is displayed, the diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then not trigger, which is why you should take the warning seriously.

Reading out the fault memory quickly shows which message is present.

Which vehicles is the 38910-71L21 fitted in?

The control unit 38910-71L21 from Suzuki is fitted in these vehicles: Suzuki Swift FZ/NZ (2010-2013) and FZ/NZ Facelift (2013-2017).

The following list shows the vehicles to which this part number is assigned.

• Suzuki Swift FZ/NZ (2010-2013)
• Suzuki Swift FZ/NZ Facelift (2013-2017)

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. Whether the control unit is actually defective or whether a connector or cable is the cause can only be seen in the fault memory, which you should have read out beforehand.

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

How does the repair of the 38910-71L21 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit 38910-71L21. Afterwards, create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a function test. Afterwards your own unit comes back to you.

Processing at Airbag24 usually takes 3–4 working days.

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 38910-71L21 get to Airbag24?

You send the control unit 38910-71L21 in as a package or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Enclose the printed repair order with the package and pack the unit shock-proof.