Airbag control unit with part number 77960-T7S-U810-M2

What does the airbag control unit 77960-T7S-U810-M2 do?

The 77960-T7S-U810-M2 is the airbag control unit which, within the SRS of Honda, evaluates the signals from the crash sensors and decides within milliseconds whether airbags and seatbelt pretensioners are triggered in an accident. It monitors the system continuously.

It reports malfunctions via the airbag warning light. After an accident, it stores crash data and locks itself.

Why does the control unit 77960-T7S-U810-M2 fail?

The most common cause is crash data from an accident, even without a triggered airbag. In the 77960-T7S-U810-M2, aged electronics, cold solder joints, moisture and voltage spikes are also possible triggers.

Crash data cannot be deleted with a standard diagnostic tool. Airbag24 removes it during the repair so that the control unit can then be fully tested. These further causes are also possible:

• wear and ageing of the electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 77960-T7S-U810-M2 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently. Further signs are a fault message, a missing connection to the diagnostic tool, and a fault memory that cannot be cleared.

The signs in detail:

• airbag warning light lights up continuously or only intermittently
• fault message in the instrument cluster
• no connection between diagnostic tool and control unit
• fault memory cannot be cleared

With such signs, airbags and seatbelt pretensioners may not deploy in an emergency. The warning light is therefore one of the warning signals that must be taken seriously.

Which vehicles is the 77960-T7S-U810-M2 fitted in?

The 77960-T7S-U810-M2 is fitted in these vehicles: Honda HR-V 2nd generation (2015-2022).

The list of vehicles follows in the overview:

• Honda HR-V 2nd generation (2015-2022)

Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. The fault memory, on the other hand, shows whether the control unit is defective or whether a plug or cable is the cause. Please have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 77960-3V0-A81, 77960-T7S-A21, 77960-T7S-A212-M2, 77960T7SK410M2.

How does the repair of the 77960-T7S-U810-M2 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the 77960-T7S-U810-M2. Next, create a repair order online and send the unit in, well packed.

Airbag24 checks the unit on the test bench, replaces defective components and deletes the stored crash data. The team then carries out a function test and returns your own unit. Checking, repairing and testing at Airbag24 as a rule 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-T7S-U810-M2 get to Airbag24?

You can make the journey to Airbag24 by parcel or use a UPS collection booked for an extra charge. Airbag24 takes care of the return trip after the repair by UPS.

Make sure the printed repair order is in the parcel and that the control unit is packed shock-proof.