Airbag control unit with part number 98820-1VZ0B

What is the function of the airbag control unit 98820-1VZ0B?

The airbag control unit with part number 98820-1VZ0B is the original OEM safety module (SRS diagnostic and control module) for the Infiniti Q60 of the CV37 series. As the central control unit, it is responsible for system diagnostics, monitoring all sensors, and precisely triggering airbags, seatbelt pretensioners, and other safety components in the event of a crash.

This component serves as the brain of the vehicle’s entire passive safety system. It continuously analyzes data from acceleration and yaw rate sensors to reliably detect a collision and activate the necessary restraint systems within milliseconds. After an accident or in case of internal faults, the unit is often deactivated for safety reasons and must be professionally repaired.

Why does the control unit 98820-1VZ0B fail?

The most common cause of failure for the control unit 98820-1VZ0B is the storage of crash data after an accident, which leads to permanent deactivation. Other defects include internal electronic malfunctions indicated by error codes such as U1XXX or B1XXX, as well as complete communication failure with the diagnostic system.

After airbags or seatbelt pretensioners are deployed, an irreversible entry is stored in the control unit’s internal memory. This “crash lock” prevents further operation and makes specialized electronic repair essential for reactivation.

In addition to stored crash data, hardware defects on the circuit board can also be the root cause. These include faulty components like capacitors or chips, corrosion caused by moisture ingress, water damage, or damage due to reverse polarity—for example, during an incorrect jump-start.

In some cases, the fault does not lie directly in the control unit but rather in peripheral components. Broken or crushed cables and defective connectors can produce similar symptoms and should be checked before removing the module. For the Infiniti Q60, the alternative part number 25348-5CA0B may also be relevant.

How do you recognize a defect in the 98820-1VZ0B?

A defective 98820-1VZ0B control unit primarily manifests as a permanently illuminated or flashing airbag warning light on the instrument cluster. Additionally, diagnostic tools may be unable to establish communication with the control unit, preventing OBD port-based fault analysis and indicating total failure.

The airbag warning light (SRS light) is the clearest indicator of a problem in the safety system. It signals that the system would either fail to operate or operate incorrectly in the event of a crash, posing a significant safety risk.

Another clear symptom is when the workshop cannot access the airbag control unit using a diagnostic tool. Error messages such as “No communication possible” or “Control unit defective” directly point to an issue with the module itself.

In which vehicles is the control unit 98820-1VZ0B installed?

The airbag control unit with part number 98820-1VZ0B is specifically designed for Infiniti vehicles. At Airbag24, we repair this module for the Infiniti Q60 of the CV37 series, including the Q60 Coupe models produced between 2016 and 2022—especially those from model year 2017 onward.

At Airbag24, we specialize in repairing airbag control units and handle part number 98820-1VZ0B for the following models:

Infiniti Q60 CV37 (2016–2022) Infiniti Q60 Coupe CV37 (2016–2022)

Is repairing the 98820-1VZ0B worthwhile?

Yes, repair is the most economical and technically sensible solution. Compared to a new unit, which often costs over €500, you can save up to 70%. Since the original control unit remains intact, no complex coding or programming is required after installation. Each repair also comes with 2 years' statutory liability for defects.

A new factory‑made control unit is not only expensive but often requires vehicle‑specific coding, adding extra workshop costs. Repairing your original unit offers a plug-and-play solution: once installed, the system is immediately fully functional again.

By choosing repair instead of replacement, you also contribute to sustainability by conserving valuable electronic resources. A professional repair performed by a specialized service provider restores full safety and functionality to the airbag system.

How does repair at Airbag24 work?

Professional repair of the 98820-1VZ0B at Airbag24 follows a proven process. After submitting the removed unit, our technicians conduct a thorough diagnosis, read out internal errors and crash data, and restore the electronics down to the component level. Following successful testing, you receive your fully functional control unit back, backed by 2 years' statutory liability for defects.

Please send the removed control unit to us, securely packaged and accompanied by the completed repair form. In the form, describe the faults that occurred and, ideally, include a diagnostic report.

At Airbag24, the device first undergoes an incoming inspection. Using specialized software, we read out the stored crash data and fault codes. This is followed by targeted electronic repair, which includes erasing the crash data, replacing defective components such as chips or capacitors when necessary, and reworking solder joints.

After restoration, the control unit undergoes a comprehensive functional test to ensure that all safety‑critical functions have been fully reinstated. Only then is it approved for return shipment.