Airbag control unit with part number 98820-4KV1A

What does the airbag control unit 98820-4KV1A do?

The airbag control unit 98820-4KV1A is the central element of the restraint system (SRS) at Nissan. It processes the crash sensor data and decides in a collision which airbags and seatbelt pretensioners fire. A fault in the system is reported via the airbag warning light.

The unit checks the system's connections continuously and documents irregularities.

After an accident the control unit stores crash data and locks itself. This protective function is important for occupants in an emergency.

Why does the control unit 98820-4KV1A fail?

The most common cause is stored crash data from an accident, even without a triggered airbag. A usual diagnostic tool cannot erase this data. Aged electronics, cold solder joints, moisture, corrosion and voltage spikes can also be the cause.

The crash data is created in the control unit itself and remains stored there. It cannot be removed with a commercially available diagnostic tool.

Aged electronics and cold solder joints can cause failures that become noticeable only slowly.

Moisture and corrosion at plug connections impair the contact, and voltage spikes stress the electronics, for example with a weak battery or a jump start.

How can you tell that the 98820-4KV1A is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. A fault message also appears in the instrument cluster, and a diagnostic tool cannot find a connection to the control unit. A fault memory then cannot be erased.

The warning light is the direct sign that the system has detected a fault.

In an emergency, airbags and seatbelt pretensioners may fail to trigger. Have the findings checked promptly.

Which vehicles is the 98820-4KV1A fitted in?

The control unit 98820-4KV1A is fitted in these vehicles: Nissan Navara D23 (2015-2020). The assignment is based on the part number.

In detail, these models are concerned:

• Nissan Navara D23 (2015-2020)

You carry out the label comparison with the part number on the removed unit; it only shows that it is the matching unit. Also have the fault memory read out before removal, because only the result clarifies whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0 285 015 304, 98820 6KB0A, 98820 EB01D, 988204KJ1A.

How does the repair of the 98820-4KV1A work?

Checking, repairing and testing at Airbag24 usually take 3–4 working days. First have the fault memory read out, enclose the report and disconnect the battery. Only then remove the control unit.

Then create the repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, replaces defective components, erases the crash data and carries out a function test. Afterwards, your own unit goes back to you.

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 98820-4KV1A get to Airbag24?

You send the control unit as a parcel or book a UPS collection for an extra charge. Returning it to you after the repair is handled by UPS.

Pack the unit shock-proof and enclose the printed repair order.