Airbag control unit with part number 98820-EZ80B

What does the airbag control unit 98820-EZ80B do?

The airbag control unit 98820-EZ80B is the control unit of the SRS restraint system in the Nissan. It queries the crash sensors, evaluates an impact within milliseconds and decides which airbags and seatbelt pretensioners trigger. After an accident it stores crash data and locks itself.

In addition it tests the components of the system during operation. Deviations found are stored in the fault memory and shown via the airbag warning light, so you keep an eye on the state of the system.

Why does the control unit 98820-EZ80B fail?

The most frequent cause is crash data that remains stored after an accident, even if no airbag has triggered. Ordinary diagnostic tools cannot erase it. Aged components, cold solder joints, moisture or corrosion at plug connections and voltage spikes also come into question.

The control unit creates the crash data itself and manages it too. That is why they do not disappear when you only connect the diagnostic tool. During the repair at Airbag24 they are erased, so the cause no longer applies.

Aged electronic components can restrict their function, and cold solder joints lead to fluctuating contact. Moisture and corrosion at plug connections impair signal transmission. Voltage spikes, for example from a weak battery or a jump start, put additional strain on the electronics.

How can you tell that the 98820-EZ80B is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as the fault is present. In addition there is a fault message in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then not trigger in an emergency.

The individual signs are:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot reach the control unit
• Fault memory cannot be cleared

The light alone does not yet reveal the cause. Reading the fault memory provides the clue for that.

Which vehicles is the 98820-EZ80B fitted in?

The control unit 98820-EZ80B is fitted in these vehicles: Nissan Titan H61 (2015-2020).

The list shows the vehicles recorded for this part number.

• Nissan Titan H61 (2015-2020)

Comparing the part number on the label of the removed unit shows that it is the correct unit. It does not reveal a cause.

Have the fault memory read before removal. Only this log shows 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 285013989, 98820-EZ20B, 98820-EZ29B.

How does the repair of the 98820-EZ80B work?

First have the fault memory read and enclose the log. Then disconnect the battery and only then remove the control unit 98820-EZ80B. Create the repair order online before the unit is sent off.

Airbag24 checks the unit on the test bench, repairs defective components, erases the crash data and runs a function test. Your own unit goes back to you afterwards.

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-EZ80B get to Airbag24?

You send the control unit 98820-EZ80B as a parcel or book a UPS collection for an extra charge. Return shipping after the repair runs via UPS.

Make sure the unit is packed shock-proof and that the printed repair order is in the parcel.