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Mazda Mazda3 BN airbag control unit repair
BHS2-57-K30A · Label
- Label
- Connector
- Back
- BHS2-57-K30A
- BRE7-57K30A
Mazda Mazda3 BN airbag control unit repair at Airbag24
Airbag24 repairs defective airbag control units professionally and affordably. Both private customers and workshops can order without registration and benefit from fast processing, 2 years' statutory liability for defects and plug&play installation.
Airbag24 works with state-of-the-art diagnostic technology and specialised repair processes. Because defective control units often involve only individual components, a professional overhaul can be considerably cheaper than buying new.
Our advantages: no registration required, a direct online ordering process for B2B and B2C customers, express shipping and comprehensive quality testing. The repaired control unit works like a new part.
Notes
Mounting position
Repair type
Which repair matches your fault code?incl. VAT plus shipping
Not sure? Just send us an enquiry or give us a call — we're happy to advise you.
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Matching part numbers
Your part number isn't listed? The list isn't complete – we can usually repair it anyway. Simply create a repair order, or ask us first.
Our estimated repair time for this product is about: 3–4 business days
Which repair matches your fault code?
Below your code you can see what needs to be done.
Your error code isn't listed? The list isn't complete – we can usually repair it anyway. Simply create a repair order, or ask us first.
Specifications
- Make
- Mazda
- Model
- Mazda Mazda3
- Series
- BN (2013-2017)BN Facelift (2017-2019)

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.
Google reviews
4.8What is a Mazda Mazda3 BN airbag control unit?
The Mazda Mazda3 BN airbag control unit is your vehicle's central safety unit, which specifically activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors relevant sensors, stores important crash data, and ensures the proper functioning of the entire passive safety system. A professional Mazda Mazda3 BN airbag control unit repair is crucial for restoring vehicle safety.
This safety-relevant electronic control unit is responsible for various airbag types, including driver, passenger, side, and curtain airbags. It thus ensures comprehensive occupant protection in the event of a collision. The module is typically mounted near the center console to efficiently ensure all necessary connections.
Why is the Mazda Mazda3 BN airbag control unit defective?
A Mazda Mazda3 BN airbag control unit often fails because it permanently stores crash data after an accident, blocking the system and signaling a malfunction. Internal electronic errors, moisture ingress, or age-related material fatigue can also lead to failures that require urgent repair or replacement of the module. Such defects significantly compromise vehicle occupant safety.
Common indicators of a malfunction include illuminated airbag warning lights in the dashboard. This could mean that the control unit has lost communication with the vehicle or that internal components are damaged. A precise diagnosis at a specialist workshop is essential to determine the specific cause of the failure and initiate a professional repair.
Common error codes for Mazda Mazda3 BN airbag control unit repair
During a Mazda Mazda3 BN airbag control unit repair, specific error codes occur that directly indicate problems with the airbag control unit itself. These diagnostic trouble codes (DTCs) signal communication problems or internal defects within the module and are crucial for locating and correcting the problem. Reading these codes is the first step toward proper diagnosis and repair.
- B0010 → Airbag control unit communication error → Airbag ECU
- B1000 → Control unit communication error → Airbag ECU
What part numbers are available for the Mazda Mazda3 BN airbag control unit repair?
For the Mazda Mazda3 BN airbag control unit repair, this repair product currently lists the following part numbers, which belong to airbag control units of this model and serve to identify the module in connection with the repair: BHS2-57-K30A, BRE7-57K30 and BRE7-57K30A.
The part number is printed on the label of the airbag control unit and can be stated on the repair order.
Based on 246 reviews
What our customers say
„Ok.“
„Works like a charm!“
„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
„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
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„Everything worked out great! Read out fault memory, sent it in, received offer and sent in the defective control unit. Got it back repaired after 3 days, price exactly as in the offer. It can't get any better 👍“
Automatically translated · Original: German
„Uncomplicated service. Fast and thorough. Can only recommend.“
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„All great👍“
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„All great, fast delivery. Thanks.“
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„100% satisfied. Everything handled very professionally and transparently. Only the return shipping took too long. This was however due to UPS and less to Aairbag24. Thank you very much“
Automatically translated · Original: German
„VAG airbag control unit with error B2000 00 reliably repaired. Price very high in comparison, but everything worked out. No exact protocol of what was carried out, probably just newly flashed“
Automatically translated · Original: German
„A great shop, even when there are sometimes problems. There are quick responses and very good help. I can only recommend the shop. Thank you very much“
Automatically translated · Original: German
„Ok.“




