Works like a charm!
Citroën C4 Aircross I airbag control unit repair
Citroën C4 Aircross I 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?excluding VAT and 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.
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
- Citroën
- Model
- Citroën C4 Aircross
- Series
- I (2012-2017)
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 233 reviewsView all reviews →
Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!
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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 airbag light). Thanks to Airbag 24 in Berlin 👍👏. Gerd
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Fast repair and fast shipping Simply top
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Everything works great
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Ultra fast delivery, fit really well in the end. There was even a pen and gummy bears included. :D Definitely again, thank you very much!
Automatically translated · Original: German
What is a Citroën C4 Aircross I airbag control unit?
The airbag control unit is the central control unit of the restraint system (SRS) in the Citroën C4 Aircross I. It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners deploy. During operation it monitors the entire system and reports faults via the airbag warning light.
The control unit is fitted in the Citroën C4 Aircross I (2012 to 2017). The control unit comes from Bosch. All sensors, squib circuits and seatbelt pretensioners of the restraint system come together there.
After an accident it stores crash data and locks itself. You will usually notice a fault first by the warning light.
Why is the Citroën C4 Aircross I airbag control unit defective?
The most common cause is crash data stored after an accident, even if no airbag deployed. Ageing electronic components, cold solder joints, moisture and corrosion at connectors, and voltage spikes may also be the cause.
Stored crash data cannot be erased with an ordinary diagnostic tool. Voltage spikes arise, for example, from a weak battery or from jump-starting. Electronic components and solder joints age over the years and through the many temperature changes in the vehicle.
Typical signs are a permanently lit airbag warning light, a fault memory that cannot be cleared, or a diagnostic tool that cannot connect to the control unit. If one of these occurs, it is worth having the control unit checked before you replace any other parts of the system.
Common error codes for Citroën C4 Aircross I airbag control unit repair
You read error codes from the fault memory of the Citroën C4 Aircross I with a diagnostic tool. They show in which area the airbag system has detected a fault, for example in communication, in the control unit itself or in a squib circuit.
First the readout, then the interpretation: the following codes occur with this control unit. They concern internal control unit faults, communication in the vehicle network, the power supply and the squib circuits of the airbags.
- F620 → Internal control unit fault, not further specified
- F633 → Internal fault in the passenger airbag firing system, first stage
- F00F → Control unit no longer transmits on the CAN network
- E650 → Control unit supply voltage too high
- B0001 → Driver airbag squib circuit, first stage: resistance too high
- B0028 11 → Front right side airbag: wiring fault, short circuit to ground
- C601 → Driver airbag igniter module, first stage: open circuit
A code alone does not show with certainty that the control unit is defective. Connectors, wiring or an airbag module can also be the cause. Only the inspection clarifies where the fault actually lies.
What part numbers are available for the Citroën C4 Aircross I airbag control unit repair?
The part number is printed on the label of the control unit and determines the exact version. Within the Citroën C4 Aircross I model series there are different numbers depending on equipment and year of manufacture.
The following list shows known part numbers for this control unit. It makes no claim to completeness.
- 8635A322 (Bosch)
Compare the number on your unit with this list. This way you make sure it is the right unit. Whether it is defective is only shown by reading out the fault memory or by the inspection.
This is how you get to the repair: have the fault memory read out, disconnect the battery and remove the control unit. Create a repair order online and send in the unit. Processing at Airbag24 usually takes 3–4 working days, which covers checking, repairing and testing. Afterwards we send your own unit back. 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.
4.8
Based on 233 reviews
What our customers say
„Works like a charm!“
Leoly3 weeks ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerleinlast week„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 f…“
Automatically translated · Original: German
Gerd Goldammerlast week„Fast repair and fast shipping Simply top“
Automatically translated · Original: German
Andreas Foxlast week„Everything works great“
Automatically translated · Original: German
Wolfgang Katenzlast week„Ultra fast delivery, fit really well in the end. There was even a pen and gummy bears included. :D Definitely again, thank you very much!“
Automatically translated · Original: German
Tim Hammer2 weeks ago„I drive a W210 estate. My control unit was broken and because of that I couldn't go to TÜV. I was recommended Airbag24 from a forum. I sent in my control unit. Unfortunately everything was a bit under time pressure and I…“
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Franz Dampf2 weeks ago„Motorhome Fiat Ducato. Fault airbag lamp lit permanently, could also not be reset after reading it out. Fault was permanently present. Quick friendly contact with Airbag24, described the fault, known problem was the stat…“
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Rene Larisch2 weeks ago„Professionals are at work here, any additional repairs that may arise are carried out without complaint and without discussion...always happy to come back.“
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Manfred Gunia3 weeks ago„From the order to the repair everything worked well, airbag control unit installed, the light goes off again as it should, good service, fast repair and return shipping. Thanks 👍👍👍“
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Petra3 weeks ago„Got the second airbag control unit from you for another car. Fits, no more error message. Great service Can only recommend. Super fast delivery, and they keep what they promise. A big thank you to this company.“
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Mama 43 weeks ago„Super fast service and repair Fast processing“
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Dennis Baron4 weeks ago„Works like a charm!“
Leoly3 weeks ago
