Airbag control unit with part number 38910-64R40

What does the airbag control unit 38910-64R40 do?

The airbag control unit 38910-64R40 is the central control unit of the SRS restraint system in the Suzuki. It checks the crash sensors, decides in an accident on airbags and seatbelt pretensioners, and reports faults.

The decision is made within milliseconds, and the unit monitors the system during normal operation as well. Detected faults are shown via the airbag warning light.

After an accident it stores crash data and locks itself.

Why does the control unit 38910-64R40 fail?

The most common cause for the 38910-64R40 is crash data stored in the unit after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Ageing components, moisture and voltage spikes are further possible causes.

Crash data is the record of the event. It is created during the incident itself and remains in the memory of the control unit.

Electronic components age over time. Solder joints can become cold or brittle, and moisture and corrosion attack the plug connections.

Voltage spikes, for example from a weak battery or a jump start, load the control electronics and can leave traces in the memory.

How can you tell that the 38910-64R40 is defective?

A defect on the 38910-64R40 mainly shows up through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. A fault message in the instrument cluster, no connection to the diagnostic tool or a fault memory that cannot be cleared are also signs.

Only the diagnosis confirms whether a defect is actually present. The typical signs are:

• Airbag warning light stays on permanently
• Airbag warning light flashes intermittently
• Fault message in the instrument cluster
• No connection to the control unit via the diagnostic tool
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may fail to deploy if there is a defect.

Which vehicles is the 38910-64R40 fitted in?

The airbag control unit 38910-64R40 is fitted in these vehicles: Suzuki S-Cross JY.

The following assignment belongs to this part number.

• Suzuki S-Cross JY

A comparison works in two steps. Comparing the part number on the label of the removed unit with this page only shows that it is the right unit. Having the fault memory read out shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 38910-61M00, 38910-61M01, 38910-61M10, 38910-61M11, 38910-61M20, 38910-61M21.

How does the repair of the 38910-64R40 work?

At the start comes the read-out of the fault memory, whose log you attach. Only then do you disconnect the battery and remove the 38910-64R40. Next you create the repair order online and send the unit in.

At Airbag24 the unit is examined on the test bench, defective components are replaced, stored crash data is erased and the function is tested. Afterwards your own unit comes back.

Airbag24 normally estimates 3–4 working days for testing, repair and function test. 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 38910-64R40 get to Airbag24?

You send the 38910-64R40 as a parcel or have it collected by UPS for an extra charge. After the repair, UPS brings it back from Airbag24.

Make sure the packaging is shock-proof and enclose the repair order in print.