Airbag control unit with part number 77960-SWA-H213-M4

What does the airbag control unit 77960-SWA-H213-M4 do?

The 77960-SWA-H213-M4 is the main control unit of the restraint system (SRS) of Honda. It evaluates the crash sensors, selects the airbags and seatbelt pretensioners to fire in a crash within milliseconds, and monitors the system at all times.

The unit indicates faults via the airbag warning light in the instrument cluster, accompanied by an error message.

After an accident, it creates crash data and locks itself. The lock is lifted only by the repair.

Why does the control unit 77960-SWA-H213-M4 fail?

The most common cause on the 77960-SWA-H213-M4 is stored crash data after an accident, even if no airbag fired. Other causes include aged components, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

Crash data remains in the unit, and a normal diagnostic tool cannot remove it. That is why the crash data is checked during every examination.

The other causes concern the electronics in general. Components age, solder joints can be cold, moisture promotes corrosion on plug connections, and voltage spikes occur, for example with a weak battery or when jump-starting.

How can you tell that the 77960-SWA-H213-M4 is defective?

On a defective 77960-SWA-H213-M4, the airbag warning light in the instrument cluster lights up either permanently or intermittently. In addition, an error message appears, the diagnostic tool finds no contact with the control unit, and the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The light is the signal you should keep an eye on in everyday driving. As soon as it lights up, it is advisable to have the cause clarified.

A lack of contact with the diagnostic tool also counts among the signs that justify an examination.

Which vehicles is the 77960-SWA-H213-M4 fitted in?

The 77960-SWA-H213-M4 is fitted in these vehicles: Honda CR-V 3 RE (2006-2012).

These vehicles are documented for this part number:

• Honda CR-V 3 RE (2006-2012)

If the part number on the label of the removed unit matches this page, you have the right unit. Whether it is defective or a connector or cable is causing the fault, however, is only clarified by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 77960-SWA-G214-M4, 77960-SWA-S21, 77960-SWA-S214-M4, 77960-T0AA-110-M1, 77960-TA0-A031, 77960-TLA-A25.

How does the repair of the 77960-SWA-H213-M4 work?

During the repair of the 77960-SWA-H213-M4, first have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. Airbag24 needs 3–4 working days in total for examination, repair and testing.

After that, create a repair order online and send in the well-packed unit. Airbag24 examines it on the test bench, rectifies damage to components, removes the crash data and carries out a function test.

Afterwards, your own unit is 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-SWA-H213-M4 get to Airbag24?

The 77960-SWA-H213-M4 goes to Airbag24 as a package, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

A printed repair order goes into the package, and the unit must be packed shock-proof.