Airbag control unit with part number 77960-SWA-F211-M4

What does the airbag control unit 77960-SWA-F211-M4 do?

The airbag control unit 77960-SWA-F211-M4 is the central control unit for the SRS of Honda. It evaluates the crash sensors, determines in an accident the triggering of airbags and seatbelt pretensioners, and monitors the system continuously. Faults appear on the airbag warning light.

In the background the electronics check connections and triggering elements and report deviations to the instrument cluster.

After an accident the unit stores crash data and locks itself.

Why does the control unit 77960-SWA-F211-M4 fail?

The most common cause with the 77960-SWA-F211-M4 is crash data from an accident, even without a deployed airbag; a normal diagnostic tool cannot erase them. Other causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

At Airbag24 the crash data are erased during the repair.

The other causes are rather age-related or linked to moisture. Solder joints can be cold, contacts corrode, and weak batteries or a jump start cause voltage spikes.

How can you tell that the 77960-SWA-F211-M4 is defective?

Watch for the airbag warning light on the 77960-SWA-F211-M4, fault messages in the instrument cluster, and a diagnostic tool that does not respond. In an emergency, airbags and seatbelt pretensioners may fail to deploy.

• The light stays on continuously.
• The light appears only from time to time.
• The instrument cluster reports a fault in the airbag system.
• The diagnostic tool cannot reach the control unit.
• The fault memory cannot be cleared.

A prompt check is advisable if any of these signs appear.

Which vehicles is the 77960-SWA-F211-M4 fitted in?

The control unit 77960-SWA-F211-M4 is fitted in these vehicles: Honda CR-V 3 RE (2006-2012).

The list in detail:

• Honda CR-V 3 RE (2006-2012)

Comparing the part number on the label of your unit with this page only confirms the identity of the unit. The fault memory, on the other hand, shows whether the control unit itself or a plug or cable is the cause. Have it 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-F211-M4 work?

Have the fault memory read out, enclose the log and disconnect the battery before the 77960-SWA-F211-M4 is removed. Then create the repair order online and pack the unit well for dispatch. At Airbag24, testing, repairing and checking usually takes 3–4 working days.

The order of these steps is mandatory for safety reasons.

At Airbag24 the team checks the control unit on the test bench, repairs defective components where needed, erases the crash data and tests the function. 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-F211-M4 get to Airbag24?

You send the 77960-SWA-F211-M4 in as a parcel, or you book a UPS collection for an additional charge. The return after the repair is likewise made by UPS.

Print the repair order and place it in the parcel. Pack the unit shock-proof.