Airbag control unit with part number 28556-5RB0B

What does the airbag control unit 28556-5RB0B do?

The airbag control unit 28556-5RB0B is the central control unit of the SRS system in the Nissan. It reads the signals from the crash sensors, decides within milliseconds in an accident on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. Faults are indicated via the airbag warning light.

After an accident, the unit stores crash data and locks itself. The continuous monitoring covers sensors, wiring and trigger circuits.

Why does the control unit 28556-5RB0B fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. With a normal diagnostic tool, this data cannot be deleted. Further causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Airbag24 deletes the crash data during the repair. The other causes can only be classified after the fault memory has been read.

Voltage spikes arise, for example, with a weak battery or from jump-starting. Moisture and corrosion mainly attack plug connections.

How can you tell that the 28556-5RB0B is defective?

A fault shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently, and through a fault message in the instrument cluster. In addition, there is a diagnostic tool with no connection to the control unit and a fault memory that cannot be cleared.

Then airbags and seatbelt pretensioners may not deploy in an emergency. If the warning light is on, have the system checked promptly.

Which vehicles is the 28556-5RB0B fitted in?

The control unit 28556-5RB0B is fitted in these vehicles: Nissan Kicks P15 (2016-2020) and P15 Facelift (2020-2024).

The following overview shows the assignment to this part number.

• Nissan Kicks P15 (2016-2020)
• Nissan Kicks P15 Facelift (2020-2024)

Compare the part number on the label of the removed unit with this page; this only ensures that it is the right unit. Have the fault memory read beforehand, because only the result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-5RX0B.

How does the repair of the 28556-5RB0B work?

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

Airbag24 examines the unit on the test bench, repairs defective components, deletes stored crash data and carries out a function test. After that, your own unit is returned.

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 28556-5RB0B get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shock-proof.