Airbag control unit with part number 98820-3SS0A

What does the airbag control unit 98820-3SS0A do?

The airbag control unit 98820-3SS0A is the switching point of the restraint system (SRS) on Nissan. It receives the messages from the crash sensors and, in an emergency, decides which airbags and seatbelt pretensioners are triggered, within a few milliseconds.

At the same time it checks the system incessantly and makes faults visible via the airbag warning light.

After an accident, crash data is stored and the unit locks itself.

Why does the control unit 98820-3SS0A fail?

Crash data from the time after an accident is the most common cause, even when no airbag fired. Further triggers on the 98820-3SS0A are aged components, corrosion at plug connections and voltage spikes.

An ordinary diagnostic tool cannot remove this data. Airbag24 erases it while working on the unit.

The other causes concern ageing and the surroundings of the control unit: electronic components become weak, solder joints can go cold over time, and moisture promotes corrosion. Voltage spikes, for example from a weak battery or jump-starting, are added on top.

How can you tell that the 98820-3SS0A is defective?

The airbag warning light in the instrument cluster is the most important warning sign: if it lights up on the 98820-3SS0A permanently or intermittently, a defect is likely. Additionally, fault messages may appear in the instrument cluster, or the diagnostic tool finds no contact with the control unit.

In an emergency, airbags and seatbelt pretensioners could then fail to trigger, which is why a prompt check is advisable.

Which vehicles is the 98820-3SS0A fitted in?

Compare your vehicle with the list and you will see whether it matches. The 98820-3SS0A is fitted in these vehicles: Nissan Sylphy B17 (from 2012).

The listing for this part number follows here:

• Nissan Sylphy B17 (from 2012)

The label on the removed control unit carries the part number; if it matches this page, the correct unit is confirmed. For the finding itself, the fault memory read out is decisive, because it shows whether a control unit or a wire is to blame.

For the same vehicles, we also repair control units with the part numbers 28556-3RA0A, 28556-3RB0A, 28556-3RC0A, 28556-3RD0B, 28556-3RF0B, 28556-3RL0A.

How does the repair of the 98820-3SS0A work?

With the 98820-3SS0A, you enclose the log of the read-out fault memory with the parcel, after disconnecting the battery and removing the control unit. Then you create a repair order online and send the unit in.

The repair at Airbag24 generally takes 3–4 working days.

Airbag24 puts the unit on the test bench, where defective components are repaired, crash data is erased and a function test is carried out. Afterwards the unit comes back.

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 98820-3SS0A get to Airbag24?

You send the control unit 98820-3SS0A in as a parcel, or you book a UPS collection for an extra charge. The return after the repair runs via UPS.

Important: the printed repair order belongs in the box, and the unit needs shockproof wrapping.