Airbag control unit with part number 77960-TEA-Z810-M4

What does the airbag control unit 77960-TEA-Z810-M4 do?

The airbag control unit 77960-TEA-Z810-M4 carries out the control of the restraint system (SRS) in Honda. It evaluates the crash sensors and decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered.

It monitors the system continuously and reports faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself.

Why does the control unit 77960-TEA-Z810-M4 fail?

The most common cause is crash data that remained in the unit after an accident, even if no airbag was triggered. A standard diagnostic tool cannot delete it, which is why the fault persists.

Aged electronic components are also possible causes, as are cold solder joints. Moisture and corrosion at plug connections likewise disturb the contact.

Voltage spikes, for example from a weak battery or a jump start, place additional strain on the electronics.

How can you tell that the 77960-TEA-Z810-M4 is defective?

Typical signs of a defect on the 77960-TEA-Z810-M4 are the airbag warning light, a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. If you notice one of these, airbags and seatbelt pretensioners may possibly not deploy in an emergency.

These signs occur individually or together:

• airbag warning light that lights up permanently or intermittently
• fault message in the instrument cluster
• no connection to the diagnostic tool
• fault memory that cannot be cleared

If the light disappears again after some time, this does not mean that the cause has been eliminated.

Which vehicles is the 77960-TEA-Z810-M4 fitted in?

In these vehicles the 77960-TEA-Z810-M4 is fitted: Honda Civic 10th generation (2015-2022).

We list the following vehicles here:

• Honda Civic 10th generation (2015-2022)

Have the fault memory read out before you remove the control unit. Then compare the part number on the label of the unit with this page, so that you can be sure the control unit is defective and not a plug or cable.

For the same vehicles, we also repair control units with the part numbers 77960-SMG-G014-M1, 77960-TBA-A01, 77960-TBA-A02, 77960-TBA-A03, 77960-TBA-A04, 77960-TBA-A05.

How does the repair of the 77960-TEA-Z810-M4 work?

Before removal, read out the fault memory and enclose the log. Then disconnect the battery, remove the unit and create a repair order online. Airbag24 checks the unit, replaces defective components, deletes crash data and tests the function; this usually takes 3–4 working days.

Afterwards your own unit is sent back to you.

The 3–4 working days apply exclusively to the repair work at Airbag24.

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-TEA-Z810-M4 get to Airbag24?

You send the control unit 77960-TEA-Z810-M4 to us as a parcel or arrange a UPS collection for an extra charge. Airbag24 then sends the repaired unit back by UPS.

Packed well, the control unit arrives most safely; enclose the repair order straight away.