Ok.
Smart Fortwo C451 airbag control unit repair
A451 820 24 85 · Label
- Label
- Connector
- A451 820 24 85
- A4519011300
- A4519015100/Q03
- A4519017600/Q03
- A45182015850001
Smart Fortwo C451 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.
4.8Google reviews of our shop(246)
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Matching part numbers
- A4519017600
- A4518202585
- A4519011300Q02
- A4518202285
- A4518201585/001
- A4518202485/002
- A4519015100/Q03
- A4519017600/Q03
- A4519015000/Q07
- A4519015000/Q03
- A451 820 24 85
- A4519011300
- A4518201585
- A4519017700
- A4518201485
- A4519012001
- A4518200185
- A4519013101
- A4518202785
- A4519015200
- A4519012701
- A4519011500
- A4519012801
- A4518201785
- A4518200985
- A4519017800
- A4519010801
- A4518202488
- A4519012301
- A4519010901
- A4519012901
- A4519015000
- A4519013301
- A4519010501
- A4519012101
- A4519011400
- A4518200685
- A4519010701
- A451 820 10 85
- A4519015100
- A4518201485001
- A4518202585002
- 391248
- 391270
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.
Repair time
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
- Smart
- Model
- Smart Fortwo
- Series
- C451 (2007-2015)
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
4.8Based on 246 reviewsView all reviews →
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 finally pass the HU there again (failed because of the red light for the airbag). Today the message came from SWE, the car is running again, the red light is off and the HU was also passed. Once again many thanks for the help in need. Keep it up and maybe word will also spread in SWE that Airbag 24 does great work. Regards Gerd
Automatically translated · Original: German
Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!
Automatically translated · Original: German
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
What is a Smart Fortwo C451 airbag control unit?
The Smart Fortwo C451 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle. This module is crucial for the passive safety of your Smart Fortwo C451.
It communicates with other control units in the vehicle, such as the ABS and engine control unit, via the CAN bus. In the event of a malfunction, it activates the airbag warning light in the instrument cluster.
Its primary function is the precise deployment of airbags and seatbelt pretensioners based on signals from acceleration and crash sensors. The device is designed for a 12-volt vehicle electrical system and is robust against vibrations and temperature fluctuations.
Why is the Smart Fortwo C451 airbag control unit defective?
The Smart Fortwo C451 airbag control unit often fails because it stores crash data after an accident that can't be easily deleted, or because internal errors occur. Communication problems with other vehicle systems or age-related wear and tear can also lead to failure, necessitating a Smart Fortwo C451 airbag control unit repair.
A typical cause of a defect is crash data stored after the airbag system has deployed. This data blocks normal function and requires professional reset or repair.
Internal errors in the control unit can also cause the airbag warning light to stay permanently lit. Communication problems with other control units are another cause of failure.
For an accurate diagnosis and resolution of the problem, it is essential to consult a specialized workshop to check or repair the broken control unit.
Common error codes for Smart Fortwo C451 airbag control unit repair
During Smart Fortwo C451 airbag control unit repair, specific error codes may occur that indicate problems with the control unit itself, such as internal malfunctions or stored crash data, which require professional diagnosis and repair. These codes are crucial for troubleshooting your Smart Fortwo C451 airbag control unit.
- B10B3 → Control unit error in the airbag control unit → Internal error in the airbag ECU
- B2F00 → Crash data stored in the airbag control unit → Data not deleted after accident
- B1043 → Control unit internal error / Error in the airbag ECU → Defect in the internal components
- B11E1 → Malfunction in CAN communication between the airbag control unit and the instrument panel (VIN) → Communication failure in the vehicle network
These codes usually indicate non-resettable errors that require a reset or specialized repair of the control unit. A precise diagnosis is crucial to initiate the correct course of action.
What part numbers are available for the Smart Fortwo C451 airbag control unit repair?
For the Smart Fortwo C451 airbag control unit repair, three exact OEM part numbers from Smart are verified: A4519011300/Q02, A4518202485, and A4518202285. These genuine parts ensure the compatibility and safety of your vehicle during repair or replacement to restore full functionality of the airbag system.
Part number A4519011300/Q02 is a genuine Smart (Daimler) OEM part number that has been confirmed as a genuine part. It is specifically designed for the airbag control unit of the Smart Fortwo C451 and has been functionally tested.
Also original is part number A4518202485, which is listed as the airbag control unit for the Smart Fortwo 451 (C451). It is often mentioned in connection with repair services and crash data resets.
The number A4518202285 is listed by specialized suppliers as the original Smart airbag control unit. This number is also compatible with your Smart Fortwo C451 and can be used for repair or replacement.
All part numbers listed are Smart OEM part numbers and are listed in professional spare parts databases. This ensures that you will receive the correct replacement part or appropriate repair for your Smart Fortwo C451 airbag control unit when repairing it.
4.8
Based on 246 reviews
What our customers say
„Ok.“
Zsolt Szabólast week„Works like a charm!“
Leoly4 weeks ago„Everything went perfectly, I can only recommend it.“
Automatically translated · Original: German
ka irgendwas2 days ago„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
Gerd Goldammer2 days ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerlein4 days ago„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
Toni Buien5 days ago„Uncomplicated service. Fast and thorough. Can only recommend.“
Automatically translated · Original: German
Abdul KS5 days ago„All great👍“
Automatically translated · Original: German
Edin Avdic6 days ago„All great, fast delivery. Thanks.“
Automatically translated · Original: German
Andrej Ivanovlast week„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
Dennis Welast week„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
Tokeh Tokehlast week„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
Sven Wegenerlast week„Ok.“
Zsolt Szabólast week
