Airbag control unit with part number 77960-T0A-K511-M3

What does the airbag control unit 77960-T0A-K511-M3 do?

In the restraint system (SRS) of Honda, the airbag control unit 77960-T0A-K511-M3 is responsible for triggering the airbags and seatbelt pretensioners. To do this, it evaluates the crash sensors and makes its decision within milliseconds in a crash.

In addition, it monitors the entire system and indicates detected faults via the airbag warning light. After an accident, the unit stores crash data and then locks itself.

Why does the control unit 77960-T0A-K511-M3 fail?

The most common cause is stored crash data from the accident, even if no airbag was deployed. Other causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage peaks.

A standard diagnostic tool cannot erase the crash data. Ageing components and cold solder joints lead to loose contacts, which only become noticeable intermittently.

Moisture and corrosion at the plug connections impair the signals. Voltage peaks, for example from a weak battery or jump-starting, are a further strain on the electronics.

How can you tell that the 77960-T0A-K511-M3 is defective?

A defect shows up at the airbag warning light in the instrument cluster, which lights up permanently or intermittently, or as a fault message in the instrument cluster. If the fault memory cannot be cleared or the diagnostic tool finds no connection, this also points to a fault. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The airbag warning light in the instrument cluster reports a defect as soon as the system detects it. Do not ignore it, even if the vehicle continues to drive normally.

Which vehicles is the 77960-T0A-K511-M3 fitted in?

The 77960-T0A-K511-M3 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

The following list shows the vehicles to which this part number is assigned:

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed unit with this page, and you will have the right unit in front of you. The fault memory will show beforehand whether the control unit is defective or whether a plug or cable is responsible. Therefore, have it read out before removal.

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-K511-M3 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, only then remove the control unit 77960-T0A-K511-M3, and create a repair order online. Airbag24 checks the unit, replaces defective components, erases the crash data and carries out a functional test.

Pack the unit well and send it in. After the functional check, your unit goes back to you.

At Airbag24, the work comprises checking, repairing and testing and usually takes 3–4 working days.

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-K511-M3 get to Airbag24?

The unit is sent to Airbag24 by parcel, or you book a UPS collection for an extra charge. After the repair, the return follows by UPS.

The printed repair order goes into the parcel, and you pack the unit shockproof.