Airbag control unit with part number 77960-TME-Z030-M4

What does the airbag control unit 77960-TME-Z030-M4 do?

The airbag control unit 77960-TME-Z030-M4 controls the restraint system (SRS) in Honda. It evaluates signals from the crash sensors, decides in a crash whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After a crash, it stores crash data and locks itself.

Monitoring runs in the background as soon as the vehicle has power. The unit records every deviation in the fault memory.

It reports faults via the airbag warning light in the instrument cluster. Without a fault, the warning light stays dark.

Why does the control unit 77960-TME-Z030-M4 fail?

Stored crash data after an accident are the most common cause, even if no airbag was triggered. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion at connectors, and voltage spikes.

A normal diagnostic tool cannot delete this data. Airbag24 deletes it as part of the repair, so the fault on the unit itself can be checked.

The other causes act over time and through the environment. Electronics age, solder joints can turn cold and lose contact, and moisture with corrosion attacks connectors. Voltage spikes, for example from a weak battery or jump-starting, also stress the unit.

How can you tell that the 77960-TME-Z030-M4 is defective?

A fault shows up on the airbag warning light, which lights up permanently or intermittently, on an error message in the instrument cluster, on a missing connection of the diagnostic tool, or on a fault memory that cannot be cleared.

The warning light is the most visible sign of a problem, so when it lights up it needs prompt checking. Even a single message is reason enough to have the vehicle examined.

In an emergency, airbags and seatbelt pretensioners may not trigger in the event of a defect. It is therefore advisable not to ignore the display.

Which vehicles is the 77960-TME-Z030-M4 fitted in?

The control unit 77960-TME-Z030-M4 is fitted in these vehicles: Honda CR-V 5 (2018-2023).

The list below shows the vehicles individually, so you can easily compare your car.

• Honda CR-V 5 (2018-2023)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. Have the fault memory read out in advance, because only this result shows whether the control unit or a connector or cable is the cause.

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-Z030-M4 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online, then send it in well packed. The checking, repair and function test at Airbag24 usually take 3–4 working days.

The sequence protects you while work is carried out on the vehicle. The control unit is removed only after the battery has been disconnected.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the stored crash data and runs 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-TME-Z030-M4 get to Airbag24?

You send the control unit in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order in the parcel and pack the unit shock-proof.