Airbag control unit with part number 77960-TLA-Y710-M4

What does the airbag control unit 77960-TLA-Y710-M4 do?

The 77960-TLA-Y710-M4 is the SRS restraint system control unit of Honda. It receives the messages from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

While driving, it checks the system continuously. If it detects a deviation, it switches on the airbag warning light.

After an accident, it creates crash data and locks itself.

Why does the control unit 77960-TLA-Y710-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; an ordinary diagnostic tool cannot remove it. In addition, ageing electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes may be considered.

The crash data remains in the unit even if no external damage to the airbags is visible.

The other causes concern the electronics themselves and their connections. Moisture affects plug connections, solder joints can stay cold, and voltage spikes occur, for example, with a weak battery or when a jump start is used.

Airbag24 deletes the crash data during the repair.

How can you tell that the 77960-TLA-Y710-M4 is defective?

A defect in the 77960-TLA-Y710-M4 can be recognised by the airbag warning light, which lights up constantly or intermittently. A fault message in the instrument cluster, a diagnostic tool without connection to the control unit and a fault memory that cannot be cleared also indicate a malfunction. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The light is considered a reliable indicator, because the control unit switches it on itself when it detects a malfunction. Overlooking it is risky, because the cause remains unknown without reading out the fault memory.

Which vehicles is the 77960-TLA-Y710-M4 fitted in?

The 77960-TLA-Y710-M4 is fitted in these vehicles: Honda CR-V 5 (2018-2023).

This overview lists the vehicles on record for this part number.

• Honda CR-V 5 (2018-2023)

First compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit. Also have the fault memory read out, because only this result shows whether the control unit 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-SWAA-213-M1.

How does the repair of the 77960-TLA-Y710-M4 work?

For the repair of the 77960-TLA-Y710-M4, first have the fault memory read out and enclose the log. Then disconnect the battery before removing the control unit, and send it in with a repair order created online. Airbag24 requires 3–4 working days for inspection, repair and function test.

Airbag24 checks the unit sent in, repairs defective components, erases the stored crash data and carries out a function test. Your own unit is then 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-TLA-Y710-M4 get to Airbag24?

You send the control unit 77960-TLA-Y710-M4 as a parcel, or book a UPS collection for an extra charge. Airbag24 returns it to you by UPS after the repair.

Place the printed repair order in the parcel and pack the unit shockproof.