Airbag control unit with part number 38910-57L61

What does the airbag control unit 38910-57L61 do?

The airbag control unit 38910-57L61 controls the restraint system (SRS) in Suzuki. It evaluates the signals from the crash sensors, decides in a collision within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

Continuous monitoring reports faults via the airbag warning light in the instrument cluster. In this way you learn that something in the system needs checking.

Because the decision in a collision takes only milliseconds, the electronics are designed for reliability.

Why does the control unit 38910-57L61 fail?

The most common cause is crash data stored after an accident, even if no airbag has been triggered; a standard diagnostic tool does not erase it. Other causes are aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data remains in the control unit after an accident. Reading out with ordinary equipment therefore does not help to remove it.

The other causes at a glance:

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connectors
• Voltage spikes, for example from jump-starting or a weak battery

How can you tell that the 38910-57L61 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and in addition there may be a fault message, no connection to the diagnostic tool, and a fault memory that cannot be emptied. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The light is the clearest signal your vehicle gives. Whether it stays on permanently or only now and then, in both cases a check is necessary.

A fault message in the display and a diagnosis that cannot be established fit this picture. However, certainty comes only from reading out the fault memory.

Which vehicles is the 38910-57L61 fitted in?

The control unit 38910-57L61 is fitted in these vehicles: Suzuki Kizashi RE91S. The list only shows the assignment, nothing more.

Here is the vehicle list:

• Suzuki Kizashi RE91S

Compare the part number on the label of the unit with this page. This confirms that it is the correct unit. Whether the control unit is defective, or whether a plug or a cable is the cause, is shown only by the fault memory, which you have read out before removal.

For the same vehicles, we also repair control units with the part numbers 38910-57L00, 395057L105, 4815057L01.

How does the repair of the 38910-57L61 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. You create the repair order online and send the unit in well packed. At Airbag24 processing usually takes 3–4 working days.

Disconnecting the battery before removal is a safety rule that applies to every removal.

Then our work begins: the unit is checked, defective components are replaced, the stored crash data is erased and a function test is carried out. Afterwards you receive your own unit back.

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 38910-57L61 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

The parcel contains the printed repair order and is shock-resistantly padded.