Airbag control unit with part number 98820-4KE0B

What does the airbag control unit 98820-4KE0B do?

The airbag control unit 98820-4KE0B coordinates the restraint system (SRS) in Nissan. It evaluates the crash sensors, decides in an accident within milliseconds about airbags and seatbelt pretensioners, and monitors the system continuously. After an accident, it stores crash data and locks itself.

If the unit detects a fault, it reports it via the airbag warning light in the instrument cluster. In this way the state of the system remains visible to the driver.

Only the repair lifts the lock.

Why does the control unit 98820-4KE0B fail?

The most common cause is stored crash data after an accident, even if no airbag was triggered. An ordinary diagnostic tool cannot erase it. Other causes are aged components, dry solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data stays in the memory even when nothing can be seen on the vehicle from outside. That is why it is worth looking at the fault memory before anything is changed on the unit itself.

The other causes concern the electronics: components age, dry solder joints can form, moisture and corrosion disturb the contacts, and voltage spikes arise, for example, with a weak battery or a jump start.

How can you tell that the 98820-4KE0B is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

Signs like these point to a problem in the control unit or its surroundings, and a check clarifies what lies behind them.

In an emergency, airbags and seatbelt pretensioners may then not trigger. The warning light should therefore be taken seriously.

Which vehicles is the 98820-4KE0B fitted in?

The 98820-4KE0B is fitted in these vehicles: Nissan Frontier D23 (2015-2020); Nissan Navara D23 (2015-2020).

This overview lists the individual vehicles:

• Nissan Frontier D23 (2015-2020)
• Nissan Navara D23 (2015-2020)

Compare the part number on the label of the removed unit with this page to make sure that it is the correct 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 0 285 015 304, 28556-8Z325, 285569Z510, 28556EA10A, 98820 6KB0A, 98820 EB01D.

How does the repair of the 98820-4KE0B work?

For the repair of the 98820-4KE0B, you first read out the fault memory and enclose the log. Then you disconnect the battery and only afterwards remove the control unit. Next, you create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit then goes back to you.

Processing at Airbag24 typically 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 98820-4KE0B get to Airbag24?

You send the control unit 98820-4KE0B in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes into the parcel, and the unit is packed in a shock-resistant way.