Airbag control unit with part number 25348-4AN0A

What does the airbag control unit 25348-4AN0A do?

The airbag control unit 25348-4AN0A controls the restraint system (SRS) of Infiniti. It processes the signals from the crash sensors, decides in an accident on airbags and seatbelt pretensioners, and monitors the system continuously.

The evaluation takes only milliseconds. During this process, the unit records which components are conspicuous in the event of a fault.

It reports abnormalities via the airbag warning light, and the lock after an accident only ends with the repair.

Why does the control unit 25348-4AN0A fail?

Crash data stored after an accident is the most common cause, even if no airbag was triggered. A standard diagnostic tool cannot erase it. Other possible causes are aged components, cold solder joints, moisture and corrosion, as well as voltage spikes.

Crash data stays in the unit until Airbag24 removes it during the repair. It is a record of the accident and not an ordinary fault message.

Aged components and cold solder joints show up over time. Moisture and corrosion disrupt the contacts, and voltage spikes, for example when starting with a jump start from another vehicle, put strain on the electronics.

How can you tell that the 25348-4AN0A is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, a fault message appears, or the diagnostic tool cannot find the control unit. A fault memory that cannot be cleared also points to a defect in the 25348-4AN0A.

In that case, airbags and seatbelt pretensioners may not trigger in an emergency. This condition calls for a prompt check of the system.

The display in the instrument cluster is the intended signal that the vehicle itself gives.

Which vehicles is the 25348-4AN0A fitted in?

The 25348-4AN0A is fitted in these vehicles: Infiniti Q50 V37 (2013-2024).

The list shows the assigned vehicles:

• Infiniti Q50 V37 (2013-2024)

Comparing the part number with the label on the removed unit shows that you have the right unit. The cause is only clarified by the fault memory, which you should have read out before removal, because it shows whether the control unit is defective or whether a connector or cable is involved.

For the same vehicles, we also repair control units with the part numbers 988206HE0A, K8820-4HL0A.

How does the repair of the 25348-4AN0A work?

First, have the fault memory read out and enclose the log. Then disconnect the battery before removing the control unit. Afterwards, create a repair order online and send the unit in well packed.

Processing at Airbag24 usually takes 3–4 working days.

There, the unit is checked on the test bench, damage to the components is repaired, the crash data is erased and a function test is carried out. After that, 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 25348-4AN0A get to Airbag24?

You send the control unit 25348-4AN0A as a parcel, or you book a UPS collection for an extra charge. The return journey after the repair is handled by UPS.

The printed repair order goes into the parcel, and you pack the unit so that it is shock-resistant.