Airbag control unit with part number 77960-TME-Z110-M4

What does the airbag control unit 77960-TME-Z110-M4 do?

The control unit 77960-TME-Z110-M4 forms the centre of the restraint system (SRS) of Honda. It evaluates the crash sensors and, in a crash, decides within milliseconds which airbags and seatbelt pretensioners fire.

Its tasks also include constant self-testing of the system. Faults found are shown on the airbag warning light.

A crash causes crash data to be stored and the unit to lock itself.

Why does the control unit 77960-TME-Z110-M4 fail?

The most common cause with the 77960-TME-Z110-M4 is crash data left behind after an accident, even if no airbag deployed. A conventional diagnostic tool cannot erase it. Ageing, cold solder joints, moisture and voltage spikes add to the list.

Electronic components age, and solder joints can go cold. Moisture and corrosion on plug connectors are also among the causes that Airbag24 takes into account during testing.

Voltage spikes, for example from a weakened battery or a jump start, put additional strain on the control unit. Airbag24 erases the crash data during the repair.

How can you tell that the 77960-TME-Z110-M4 is defective?

The airbag warning light in the instrument cluster either stays on permanently or lights up from time to time. A fault message also appears in the instrument cluster, and the diagnostic tool gets no connection to the control unit 77960-TME-Z110-M4. Such a defect can mean that airbags and seatbelt pretensioners may not fire in an emergency.

The fault memory also cannot be cleared, which keeps the finding on record.

The light therefore shows the finding clearly.

Which vehicles is the 77960-TME-Z110-M4 fitted in?

The control unit 77960-TME-Z110-M4 is fitted in these vehicles: Honda CR-V 5 (2018-2023). The list is limited to the models that have been assigned to this part number so far.

The following overview lists the known models.

• Honda CR-V 5 (2018-2023)

Check the part number on the label of the unit against this page. That only confirms you have the right unit, nothing more. What matters for the cause is the fault memory: it shows whether the control unit itself is defective or whether a plug or wire is triggering the fault.

For the same vehicles, we also repair control units with the part numbers 77960-TLA-A240-M4, 77960-TLA-A250-M4, 77960-TLA-A310-M4, 77960-TLA-A320-M4, 77960-TLA-A410-M4, 77960-TLA-A420-M4.

How does the repair of the 77960-TME-Z110-M4 work?

First have the fault memory of the 77960-TME-Z110-M4 read out. Then disconnect the battery, and only then remove the control unit. Airbag24 usually needs 3–4 working days to process the unit.

Then create a repair order online, enclose the log and send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and runs a functional test. Your own unit is then sent 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-TME-Z110-M4 get to Airbag24?

You send the 77960-TME-Z110-M4 control unit as a parcel, or book a UPS collection for an extra charge. The return after the repair is likewise by UPS.

The printed repair order goes into the parcel, and the control unit must be packed shock-proof.