Airbag control unit with part number 38910-55L00

What does the airbag control unit 38910-55L00 do?

The 38910-55L00 controls the restraint system of Suzuki. It evaluates the signals from the crash sensors and decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered.

The unit monitors the system permanently in the background. If it detects a fault, this is shown via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself. This condition must be observed during every repair.

Why does the control unit 38910-55L00 fail?

The most common cause with the 38910-55L00 is crash data stored after an accident, even if no airbag was deployed. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also cause the failure.

Crash data cannot be erased with a normal diagnostic tool, so it remains in memory. Airbag24 erases it as part of the repair.

The other causes arise from ageing, moisture and electrical stress. Voltage spikes occur, for example, with a weak battery or a jump start.

How can you tell that the 38910-55L00 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. A defect in the 38910-55L00 is additionally shown by a fault message, a lost connection to the diagnostic tool or a fault memory that cannot be cleared.

The light is the most visible sign of a fault in the restraint system. It shows that the system is not fully functional.

In an emergency, airbags and seatbelt pretensioners may fail to trigger. Such an indication therefore needs prompt clarification.

Which vehicles is the 38910-55L00 fitted in?

A comparison with the vehicle data shows whether your car is affected. The 38910-55L00 is fitted in these vehicles: Suzuki SX4 EY, GY and Hatchback.

The vehicles in detail are shown in this overview:

• Suzuki SX4 EY
• Suzuki SX4 GY
• Suzuki SX4 Hatchback

Compare the part number on the label of the removed unit with this page, so that you can be sure it is the right unit. Also have the fault memory read out beforehand. 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 37171-79J21, 38910-55L20-000, 38910-79J21, 38910-79J22, 38910-80J40, 3891079J22000.

How does the repair of the 38910-55L00 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the 38910-55L00. Next, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. You then 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 38910-55L00 get to Airbag24?

You send the 38910-55L00 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

Pack the control unit shockproof and put the printed repair order in the parcel.