Airbag control unit with part number 77960-TLA-Y030-M4

What does the airbag control unit 77960-TLA-Y030-M4 do?

The airbag control unit 77960-TLA-Y030-M4 is the central unit of the restraint system (SRS) in Honda. It evaluates the crash sensors, decides in an accident, within milliseconds, on the deployment of airbags and seatbelt pretensioners, and indicates faults via the airbag warning light.

The unit monitors the entire system continuously and stores detected faults in the fault memory. After an accident, it stores crash data and locks itself.

This self-monitoring is one of its most important tasks.

Why does the control unit 77960-TLA-Y030-M4 fail?

The most common cause is stored crash data, even without an airbag deployment, which a normal diagnostic tool cannot remove. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data does not necessarily mean the unit is defective. Airbag24 erases it during the repair.

The other causes develop gradually. Jump-starting or a weak battery can also cause voltage spikes that stress the components.

How can you tell that the 77960-TLA-Y030-M4 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the display, or the diagnostic tool finds no connection to the control unit. A fault memory that cannot be cleared also belongs to these signs.

As long as this fault persists, airbags and seatbelt pretensioners may fail to deploy in an emergency.

A lit warning light is the most direct warning the vehicle gives you. Please act promptly.

Which vehicles is the 77960-TLA-Y030-M4 fitted in?

The control unit 77960-TLA-Y030-M4 is fitted in these vehicles: Honda CR-V 5 (2018-2023).

The vehicles stored for this unit are shown below.

• Honda CR-V 5 (2018-2023)

You can compare the part number on the label of the removed unit with this page yourself. This only confirms the identity of the unit. The fault memory should be read out beforehand, because only it shows whether the control unit is defective or whether a plug 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-SWAA-213-M1.

How does the repair of the 77960-TLA-Y030-M4 work?

First, have the fault memory read out and attach the log, then disconnect the battery, only then remove the control unit. Afterwards, create the repair order online and pack the unit well before sending it in. At Airbag24, processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards, the unit, now repaired, 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-TLA-Y030-M4 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Include the printed repair order and pack the unit shockproof.