Airbag control unit with part number 77960-T2F-X012-M4

What does the airbag control unit 77960-T2F-X012-M4 do?

The airbag control unit 77960-T2F-X012-M4 controls the restraint system (SRS) for Honda. It reads the signals from the crash sensors, decides in a fraction of a second in an accident which airbags and seatbelt pretensioners fire, and monitors the entire system. It reports faults via the airbag warning light.

An accident causes the unit to write crash data and then remain locked. Only the repair lifts the lock.

The unit also checks the wiring continuously and records irregularities in the fault memory.

Why does the control unit 77960-T2F-X012-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Further triggers are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 removes it during the repair.

Whether any of the other causes apply cannot be determined reliably from the outside. That requires checking the unit.

How can you tell that the 77960-T2F-X012-M4 is defective?

The airbag warning light in the instrument cluster lights up continuously or flickers intermittently, an error message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, or the fault memory cannot be cleared. In such cases, airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light is the sign that drivers notice first. It must not be ignored, even if the car otherwise runs normally.

An error message in the instrument cluster is therefore reason enough for a prompt check.

Which vehicles is the 77960-T2F-X012-M4 fitted in?

The airbag control unit 77960-T2F-X012-M4 is fitted in these vehicles: Honda Accord 9th generation (2012-2019).

The models recorded for this part number are shown here:

• Honda Accord 9th generation (2012-2019)

Before removal, the following checks make sense. First compare the part number on the label of the unit with this page, so that you can be sure it is the right unit. Then have the fault memory read out, because only the result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-SEA-G815-M1, 77960-T3L-A012-M1, C0W6K4VDA.

How does the repair of the 77960-T2F-X012-M4 work?

At Airbag24, processing usually takes 3–4 working days. The testing, the repair of defective components, the erasure of the crash data and the function test all take place within this time.

Before shipping, a fixed order applies: first have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 77960-T2F-X012-M4. Next, create a repair order online and send the unit in.

After the function test, the 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 77960-T2F-X012-M4 get to Airbag24?

The unit goes to Airbag24 as a parcel, or UPS collects it for an extra charge. After the repair, UPS brings it back.

Enclose the printed repair order and pack the unit shockproof.