Airbag control unit with part number 77960-TLA-A310-M4

What does the airbag control unit 77960-TLA-A310-M4 do?

For Honda, the airbag control unit 77960-TLA-A310-M4 controls the entire restraint system (SRS). It reads the signals from the crash sensors, decides within milliseconds in a crash whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The control unit reports faults via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself. It is a safety component whose function counts in an emergency.

Why does the control unit 77960-TLA-A310-M4 fail?

Most often, the cause for the 77960-TLA-A310-M4 is crash data stored after an accident, even where no airbag was triggered; a normal diagnostic tool does not delete it. Other causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes from a weak battery or jump-starting

Crash data can only be removed during the repair, because a normal diagnostic tool is not sufficient for this.

How can you tell that the 77960-TLA-A310-M4 is defective?

In the event of a defect in the 77960-TLA-A310-M4, the airbag warning light in the instrument cluster lights up either permanently or intermittently. In addition, fault messages appear, the diagnostic tool finds no connection, and the fault memory remains.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger, so every one of these signs deserves prompt checking.

Which vehicles is the 77960-TLA-A310-M4 fitted in?

The 77960-TLA-A310-M4 was fitted by Honda in these vehicles: Honda CR-V 5 (2018-2023).

Here follows the list of vehicles.

• Honda CR-V 5 (2018-2023)

First compare the part number on the label of the removed control unit with this page. This only ensures that you have the correct unit. Then have the fault memory read out, because only this result shows whether the control unit itself 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-A310-M4 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit 77960-TLA-A310-M4. Next, create a repair order online and send the well-packed unit in.

Airbag24 then checks the unit on the test bench, replaces defective components, deletes the crash data and carries out a functional test. Processing usually takes 3–4 working days.

The unit then 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-A310-M4 get to Airbag24?

The control unit 77960-TLA-A310-M4 comes to Airbag24 either as a parcel, or you book a UPS collection for an extra charge. Return shipping after the repair is by UPS.

Put the printed repair order into the parcel and pack the control unit shockproof.