Airbag control unit with part number 98820 5Y805

What does the airbag control unit 98820 5Y805 do?

The airbag control unit 98820 5Y805 controls the restraint system (SRS) in the vehicle of Nissan. It evaluates the crash sensors, decides within milliseconds in a crash whether airbags and seatbelt pretensioners are triggered, and checks the system continuously.

It shows faults in the system via the airbag warning light in the instrument cluster. This lets you notice disruptions without removing the unit.

After an accident, it stores crash data and locks itself.

Why does the control unit 98820 5Y805 fail?

With the 98820 5Y805, the most common cause after an accident is stored crash data, even if no airbag has been triggered. A standard diagnostic tool cannot erase it. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also causes.

The crash data remains stored in the unit.

Electronics age, solder joints can go cold, and moisture as well as corrosion attack plug connections.

Voltage spikes, for example from a weak battery or from jump-starting, put additional stress on the unit.

How can you tell that the 98820 5Y805 is defective?

A defect in the 98820 5Y805 shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. An error message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared also indicate a defect.

The warning light is to be taken seriously, because it shows the state of the entire restraint system.

In an emergency, airbags and seatbelt pretensioners may not be able to trigger. Therefore check promptly what the warning means.

Which vehicles is the 98820 5Y805 fitted in?

The control unit 98820 5Y805 is fitted in the following vehicles: Nissan Maxima A33 (2000-2004). You can see whether your car is named in this list.

These are the vehicles known to us:

• Nissan Maxima A33 (2000-2004)

Comparing the part number on the label of the removed unit with this page only confirms that you have the right unit. It does not clarify the cause. Before removal, have the fault memory read out, because only that result shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 98820 5Y805 work?

First read out the fault memory and enclose the log. Then disconnect the battery and remove the control unit 98820 5Y805. Next, create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Your own unit then 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 5Y805 get to Airbag24?

You send the unit 98820 5Y805 as a parcel, or book a UPS collection for an extra charge. Airbag24 returns it to you by UPS after the repair.

Enclose the printed repair order in the parcel and pack the unit shockproof.