Airbag control unit with part number 77960-T0A-K411-M3

What does the airbag control unit 77960-T0A-K411-M3 do?

The airbag control unit 77960-T0A-K411-M3 is the central control unit of the SRS system for vehicles of the Honda brand. It evaluates the crash sensors and decides in a crash which airbags and seatbelt pretensioners are triggered.

The evaluation takes place in fractions of a second. In addition, the unit monitors the entire restraint system continuously and shows faults via the airbag warning light.

If it detects crash data in an accident, it stores the data and then locks itself. The lock ends only with the repair.

Why does the control unit 77960-T0A-K411-M3 fail?

The cause is most often crash data stored after an accident, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes such as those from a weak battery or a jump start.

A standard diagnostic tool cannot erase this crash data. During the repair at Airbag24, it is erased.

Electronic components can wear over time, solder joints can go cold, and moisture or corrosion impair plug connections.

Voltage spikes arise, for example, from a weak battery or a jump start. Whether one of these causes applies must be shown by the test.

How can you tell that the 77960-T0A-K411-M3 is defective?

A defect in the 77960-T0A-K411-M3 shows itself through the airbag warning light in the instrument cluster, which stays on or comes on intermittently. An error message, a missing connection to the diagnostic tool and a fault memory that cannot be cleared may also appear.

• airbag warning light in the instrument cluster stays on or comes on intermittently
• error message in the instrument cluster
• diagnostic tool cannot establish a connection to the control unit
• fault memory cannot be cleared

The warning light is the signal by which the unit indicates the defect. Take it seriously and have the cause clarified.

In an emergency, the airbags and seatbelt pretensioners may not be able to deploy in the event of such a defect.

Which vehicles is the 77960-T0A-K411-M3 fitted in?

The 77960-T0A-K411-M3 was fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

The following overview shows which models are recorded for this part number.

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit. Have the fault memory read out beforehand. Only this result shows whether the control unit is defective or whether a plug or connecting 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-K411-M3 work?

First read out the fault memory, then disconnect the battery and only afterwards remove the 77960-T0A-K411-M3. Processing at Airbag24 usually takes 3–4 working days.

You attach the log of the fault memory to the unit and create a repair order online. Then you pack the control unit well and send it in.

At Airbag24, the unit is tested on the test bench, defective components are replaced, the stored crash data is erased and a function test is carried out. Afterwards your own unit is sent 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-T0A-K411-M3 get to Airbag24?

You send the control unit 77960-T0A-K411-M3 to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 brings your own unit back to you by UPS.

Put the printed repair order into the parcel. Pack the control unit shockproof.