Airbag control unit with part number 77960-T0A-P810-M4

What does the airbag control unit 77960-T0A-P810-M4 do?

The airbag control unit 77960-T0A-P810-M4 is the control unit of the restraint system (SRS) for Honda. In a crash, it evaluates the crash sensors and decides within milliseconds which airbags and seatbelt pretensioners to trigger. Outside of accidents, it monitors the system.

It detects faults itself and shows them via the airbag warning light. This keeps the system traceable in the vehicle.

After a crash, it stores crash data and locks itself.

Why does the control unit 77960-T0A-P810-M4 fail?

The most common cause is stored crash data that remains in the unit after an accident, even if no airbag was triggered. Other causes include aged electronic components, cold solder joints, moisture and corrosion at the plug connections, and voltage spikes.

A normal diagnostic tool cannot erase crash data. Airbag24 removes it during the repair, so that the unit can work correctly again.

The other causes can develop over time. Moisture at connectors or a weak battery affect the electronics without anything being immediately noticeable.

How can you tell that the 77960-T0A-P810-M4 is defective?

The airbag warning light lights up permanently or intermittently, and an error message appears in the instrument cluster. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The signs occur individually or together. The warning light alone is reason enough to have the system checked.

Which vehicles is the 77960-T0A-P810-M4 fitted in?

The control unit 77960-T0A-P810-M4 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

For this part number, these models are recorded:

• Honda CR-V 4 RM (2012-2018)

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. You should also have the fault memory read before removal. Only this result shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 5WK43782, 77960-SWA-G212-M4, 77960-SWA-G214-M4, 77960-T1G-G920-M4.

How does the repair of the 77960-T0A-P810-M4 work?

At Airbag24, processing usually takes 3–4 working days. Beforehand, you have the fault memory read and enclose the log. Then you disconnect the battery and remove the control unit. Online, you create the repair order and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. Afterwards, your own unit is returned 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-T0A-P810-M4 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. Airbag24 sends the repaired unit back by UPS.

Put the printed repair order into the parcel and pack the control unit shock-resistant.