Airbag control unit with part number 77960-TA0-X011-M4

What does the airbag control unit 77960-TA0-X011-M4 do?

The airbag control unit 77960-TA0-X011-M4 controls the restraint system (SRS) in Honda vehicles. In an emergency, which airbags and seatbelt pretensioners respond depends on this unit. It evaluates the signals from the crash sensors and monitors the system continuously. After an accident it stores crash data and locks itself.

It indicates the state of the system via the airbag warning light in the instrument cluster. A detected fault is shown there.

The unit also keeps working unobtrusively during normal driving.

Why does the control unit 77960-TA0-X011-M4 fail?

On the 77960-TA0-X011-M4, stored crash data is most often responsible for a failure, even if no airbag was triggered. A normal diagnostic tool cannot clear this crash data.

Airbag24 deletes the crash data during the repair. Other possible causes are:

• Electronic parts that have aged
• Solder joints with cold spots
• Dampness and corrosion in the plug area
• Voltage spikes, for example when connecting jump leads

How can you tell that the 77960-TA0-X011-M4 is defective?

A defect on the 77960-TA0-X011-M4 becomes visible through signs in the car or on the diagnostic tool. With such signs, airbags and seatbelt pretensioners may not deploy in an emergency.

The following signs may point to this:

• Airbag warning light permanently or intermittently on
• Error message in the instrument cluster
• Diagnostic tool without connection to the control unit
• Fault memory cannot be cleared

Do not wait, but have the system checked.

Which vehicles is the 77960-TA0-X011-M4 fitted in?

The control unit 77960-TA0-X011-M4 was fitted in Honda vehicles. It is fitted in these vehicles: Honda Accord 8th generation (2008-2015).

Here is the list of vehicles:

• Honda Accord 8th generation (2008-2015)

Before removal, have the fault memory read out, so that it is clear whether the control unit is defective. A plug or a cable can also cause signs that look like a unit fault.

Then compare the part number on the label with 77960-TA0-X011-M4.

For the same vehicles, we also repair control units with the part numbers 77960-S84-A86, 77960-TA0-A01, 77960-TA0-A011M4, 77960-TA0-A02, 77960-TA0-L02.

How does the repair of the 77960-TA0-X011-M4 work?

First have the fault memory read out, and attach the log to the unit. Then disconnect the battery and remove the control unit 77960-TA0-X011-M4. Afterwards create a repair order online and pack the unit well.

At Airbag24 the unit is checked, defective components are repaired, crash data is deleted and a function test follows. Your own unit then goes back to you. Processing at Airbag24 usually takes 3–4 working days.

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-TA0-X011-M4 get to Airbag24?

For the return to Airbag24, choose the parcel route or a UPS collection booked for an extra charge. After the repair, the return follows by UPS.

Put the printed repair order in the parcel; the unit should be packed shockproof.