Airbag control unit with part number 98820-2V70B

What does the airbag control unit 98820-2V70B do?

The airbag control unit 98820-2V70B is the central control of the restraint system (SRS) of Infiniti. The signals from the crash sensors come together in the unit, and in an accident it decides within a few milliseconds about airbags and seatbelt pretensioners.

Monitoring also runs constantly. The unit reports faults via the airbag warning light in the instrument cluster.

After an accident it records crash data and locks itself.

Why does the control unit 98820-2V70B fail?

The most common cause lies in crash data held in the memory after an accident, even without a triggered airbag. An ordinary diagnostic tool does not erase it. In addition, ageing of the electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes come into consideration.

Only a repair removes this data again.

Aged circuits and faulty solder joints load the unit, and moisture attacks plugs, which can then lose contact.

Strong voltage spikes arise, for example, from a weak battery or from a jump-start and are a further cause.

How can you tell that the 98820-2V70B is defective?

A airbag warning light that lights up permanently or intermittently is the most important sign. Added to this are a fault message in the instrument cluster, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

The instrument cluster itself reports the finding before anyone reads out the fault memory.

If you notice any of these signs, have the fault memory read out.

Which vehicles is the 98820-2V70B fitted in?

The unit 98820-2V70B is fitted in: Infiniti Q60 CV37 (2016-2022).

The list appears as a separate overview below.

• Infiniti Q60 CV37 (2016-2022)

Compare the number on the label of the removed unit with this page; this only confirms that it is the right unit. The read-out fault memory also shows whether the control unit is defective or a plug or cable is the cause, which is why it belongs at the beginning.

For the same vehicles, we also repair control units with the part numbers 25348-5CA0B, 98820-1VZ0B.

How does the repair of the 98820-2V70B work?

First read out the fault memory, then disconnect the battery and only then remove the control unit 98820-2V70B. Next, create the repair order online, attach the log and send the well-packed unit. At Airbag24, checking, repairing and testing usually take 3–4 working days.

At Airbag24 the unit goes on the test bench; defective components are replaced, the crash data is erased, and a function test concludes the work. 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 98820-2V70B get to Airbag24?

You send the unit 98820-2V70B as a parcel or book a UPS collection for an extra charge. The return to you after the repair is made by UPS.

Put the printed repair order into the parcel and pack the control unit shockproof.