Airbag control unit with part number 98820-5NY1A

What does the airbag control unit 98820-5NY1A do?

The 98820-5NY1A is the central control unit of the SRS, that is the restraint system of Infiniti. It assesses the crash sensors and, in a crash, decides within milliseconds on airbags and seatbelt pretensioners. After an accident it stores crash data and locks itself.

Outside of an accident it checks the entire restraint system continuously for faults.

It records faults in memory and shows them via the airbag warning light in the instrument cluster.

Why does the control unit 98820-5NY1A fail?

The causes range from stored crash data to ageing problems in the electronics. Crash data remain in the unit after an accident, even when no airbag has deployed, and a normal diagnostic tool cannot erase them. Cold solder joints, moisture and corrosion at plug connections, and voltage spikes are added to these.

On this question there is no way around the crash data, because they stay in memory even without any visible airbag deployment.

The other causes concern electronics and contacts. Aged components, cold solder joints, moisture and corrosion, and voltage spikes from the vehicle electrical system are all possible, for example with a weak battery or a jump start. Airbag24 erases the crash data during the repair.

How can you tell that the 98820-5NY1A is defective?

A defect shows up as the airbag warning light in the instrument cluster, as error messages, or as a lack of contact with the diagnostic tool. A fault memory that cannot be cleared also points to it. In an emergency, the airbags and seatbelt pretensioners may not be able to deploy.

Typical signs at a glance:

• The airbag warning light stays on permanently or only intermittently.
• An error message about the airbag appears in the instrument cluster.
• The diagnostic tool does not connect with the control unit.
• The fault memory remains, even after an attempt to clear it.

If you notice any of these signs, have the system checked promptly.

Which vehicles is the 98820-5NY1A fitted in?

The 98820-5NY1A is fitted in these vehicles: Infiniti QX50 J50 (2007-2013) and J50 Facelift (2013-2018). This assignment is based on the part number.

The list of vehicles follows:

• Infiniti QX50 J50 (2007-2013)
• Infiniti QX50 J50 Facelift (2013-2018)

Before sending the unit in, these steps help. If the part number on the label and this page match, the correct unit has been removed. Whether the control unit itself is defective is shown only by the read-out fault memory, because a plug or cable can also be the cause.

For the same vehicles, we also repair control units with the part numbers 98820-5NY9B, 98820-5UB0A, 988201BA0B, 988201BA0C, 988205NL0B.

How does the repair of the 98820-5NY1A work?

Have the fault memory read out and attach the log to the parcel before you disconnect the battery. Only then remove the control unit and create a repair order online. Afterwards pack the unit carefully and send it in.

The sequence serves safety on the airbag system.

At Airbag24 the unit is checked on the test bench, defective components are replaced, stored crash data are erased and a functional test is carried out. These tasks usually take 3–4 working days. The unit then returns to the address it came from.

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 98820-5NY1A get to Airbag24?

Shipping is by parcel; alternatively, book a UPS collection for an extra charge. After the repair you receive the unit back by UPS.

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