
Airbag control unit with part number 77960-TWB-H020-M4
Control unit repairs for part number 77960-TWB-H020-M4 in our shop:

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Part number “77960-TWB-H020-M4” isn't linked to every vehicle in our database – we can usually repair it anyway. Select your vehicle and we'll show you the matching repair:
What does the airbag control unit 77960-TWB-H020-M4 do?
The airbag control unit 77960-TWB-H020-M4 is the central control unit of the restraint system (SRS) for Honda. It processes the crash sensor signals, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.
The control unit reports faults via the airbag warning light in the instrument cluster. This way you learn early on that something is wrong.
After an accident, it stores crash data and locks itself.
Why does the control unit 77960-TWB-H020-M4 fail?
Stored crash data after an accident is the most common cause, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.
Crash data cannot be erased with a normal diagnostic tool. It is erased during the repair at Airbag24. Only an inspection shows which of the remaining causes is present, because without one it remains unclear which applies.
How can you tell that the 77960-TWB-H020-M4 is defective?
The airbag warning light in the instrument cluster stays on permanently or intermittently. An error message likewise appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be erased.
In an emergency, airbags and seatbelt pretensioners may not deploy. The light is therefore a direct finding that you need to follow up promptly.
Which vehicles is the 77960-TWB-H020-M4 fitted in?
The control unit 77960-TWB-H020-M4 is fitted in these vehicles: Honda Accord 10th generation (2017-2024).
We list the assignments in this overview:
- Honda Accord 10th generation (2017-2024)
Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a connector or cable is the cause.
For the same vehicles, we also repair control units with the part numbers 77960-T3L-A012-M1, 77960-T3L-C012-M4, 77960-T3L-C020-M4, 77960-T3L-C030-M4, 77960-T3L-F012-M4, 77960-T3L-F020-M4.
How does the repair of the 77960-TWB-H020-M4 work?
First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send in the unit, carefully packed. Processing at Airbag24 usually takes 3–4 working days.
Airbag24 checks the control unit on the test bench, repairs defective components and erases the stored crash data. A function test follows, after which 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-TWB-H020-M4 get to Airbag24?
You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.
Put the printed repair order into the parcel and pack the control unit shockproof.
Shipping & repair from Germany
Airbag24 repairs your component in Berlin — usually within 3–4 working days.
Standard shipping within Germany is free; we normally return your part by UPS.
You pay for and insure the inbound shipment to us. On explicit request we ship by express — the extra cost is borne by the customer.
If you withdraw from the contract, you bear the cost of returning the item.
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What our customers say
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„The website of Airbag24 Airbagsysteme is very well structured and simply explained. I sent my airbag control unit from my Renault Trafic there for repair. I am very satisfied with the telephone contact as well as by mail…“
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„Super great! Very fast repair of an airbag control unit of a Fiat Bravo 198. Sent it off on Monday, got it back already repaired by Friday and installed it. Everything works perfectly again. Old reliable car saved again…“
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„Well structured website with clear instructions, processing on schedule, punctual delivery. Worked immediately after reinstallation.“
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„Apart from the price which remains a bit high, but compared to the only replacement solution and the service provided, it's PERFECT. Very good sending and return procedure, and customer contact SUPER, not to mention the…“
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„Very satisfied great work“
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„Airbag control unit was defective..Sent it in and got it back faster than expected.Worked great.Great performance from the Airbag24 Team.Thanks and I will recommend you further.“
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„I can only recommend this company. My airbag control unit was repaired within a short time and sent back to me. Airbag system works perfectly again.“
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„Everything went perfectly, I can only recommend it.“
Automatically translated · Original: German
„From the first phone call, the order processing, to the shipping everything was done very quickly and professionally. Now I still have to send the repaired unit to the Swedish workshop and then hopefully the Honda can fi…“
Automatically translated · Original: German
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