Airbag control unit with part number 98820-3KB0B

What does the airbag control unit 98820-3KB0B do?

The airbag control unit 98820-3KB0B is the switching point of the restraint system (SRS) in Nissan. From the signals of the crash sensors it calculates within milliseconds which airbags and seatbelt pretensioners are triggered in an accident. After an accident it stores crash data and locks itself.

The system checks itself permanently, and faults are shown via the airbag warning light.

Why does the control unit 98820-3KB0B fail?

Stored crash data is the most common cause when the control unit 98820-3KB0B fails, even if no airbag was triggered. Aging components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are further possible causes.

Crash data cannot be erased with a normal diagnostic tool, so it remains stored. Airbag24 removes it during the repair.

The other causes are linked to aging and environmental influences, such as moisture in plug systems. Voltage spikes occur, for example, with a weak battery or a jump start.

How can you tell that the 98820-3KB0B is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently if there is a defect in the 98820-3KB0B. At the same time the instrument cluster shows an error message, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

In a disturbed system, airbags and seatbelt pretensioners may not trigger in an emergency. Take the warning light seriously and have the system checked.

Which vehicles is the 98820-3KB0B fitted in?

The airbag control unit 98820-3KB0B is fitted in these vehicles: Nissan Pathfinder R51 (2004-2007), R51 1st Facelift (2007-2010) and R51 2nd Facelift (2010-2013). The list helps you to classify your car quickly.

Here you see the allocation:

• Nissan Pathfinder R51 (2004-2007)
• Nissan Pathfinder R51 1st Facelift (2007-2010)
• Nissan Pathfinder R51 2nd Facelift (2010-2013)

Compare the part number on the label of the removed unit with this page. This only clarifies the question of the right unit. Get a diagnosis beforehand by reading out the fault memory, because only this result shows whether the control unit is defective or whether a connector or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0285001781 Bosch, 98820 EA51C, 98820-3KW0A, 988205X30C.

How does the repair of the 98820-3KB0B work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only then remove the control unit 98820-3KB0B. Afterwards create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Then 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 98820-3KB0B get to Airbag24?

The control unit 98820-3KB0B reaches Airbag24 as a package, or you book a UPS collection for an extra charge. After the repair, UPS brings the unit back.

The printed repair order goes into the package, and you pack the unit shock-resistant.