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Citroën Relay II airbag control unit repair
Citroën Relay II 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.
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 Relay
- Series
- II (2001-2006)
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 277 reviewsView all reviews →
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The repair of the AIRBAG control unit was carried out quickly
Automatically translated · Original: German
Very fast competent reliable Also cheaper than competitors! Consultation via Mail quick extremely competent and reliable
Automatically translated · Original: German
What is a Citroën Relay II airbag control unit?
The Citroën Relay II airbag control unit is the central safety unit in your vehicle, which activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper deployment of all airbag modules and seatbelt pretensioners for maximum safety.
This essential module, also known as the airbag ECU, processes signals from acceleration sensors and crash sensors.
Its main task is to fire the airbags precisely and quickly in the event of an impact.
Why is the Citroën Relay II airbag control unit defective?
The Citroën Relay II airbag control unit often fails because internal electronic components wear out over time or are damaged by voltage fluctuations, particularly due to problems with the vehicle's battery. This then leads to communication errors in the airbag system and the persistent activation of the warning light on the dashboard.
A common reason is error code B0100, which indicates an internal defect.
Low supply voltage, often caused by a weak battery, can also affect the control unit.
Communication failures on the CAN bus are also causes that make repair of the control unit necessary.
Common error codes for Citroën Relay II airbag control unit repair
During a Citroën Relay II airbag control unit repair, we primarily diagnose code-specific errors that directly indicate problems with the airbag control unit itself, not with sensors or seatbelt pretensioners. These codes indicate internal defects, supply voltage issues, or communication problems within the system.
- B0100 → Internal electronic error in the airbag control unit → Wear or voltage peaks
- B0100-49 → Internal error in the airbag control unit → Often caused by battery or voltage problems
- B0101 → Supply voltage below threshold → Voltage at control unit too low
- U0019 → CAN bus communication error → interruption of the data connection to the control unit
- B0129 → Communication error in the airbag system → Fault in the connection to other modules
- B0136 → Control unit communication error → General control unit communication problems
- B0137 → Control unit communication error (additional diagnostic code) → Specific internal communication fault
What part numbers are available for Citroën Relay II airbag control unit repair?
For the Citroën Relay II airbag control unit repair, the manufacturer part number 1328447080 and the Continental supplier part number 5WK43154 are stored for this repair product, and both belong to airbag control units of this model that we repair in our workshop, so you can compare them with your unit.
The number on the label of the airbag control unit can be stated in the repair order.
Your specialist for Citroën Relay II airbag control unit repair
We are your experienced partner for professional Citroën Relay II airbag control unit repairs. We offer comprehensive diagnostics and fix the most common defects quickly and reliably. Our service includes the elimination of error codes like B0100 and the restoration of full functionality, restoring your vehicle's safety.
Our workshop has the necessary know-how and specialized equipment to repair your broken airbag control unit.
By repairing instead of replacing the entire unit, you can save costs and protect the environment.
Contact us for a quick diagnosis and a free quote to get your airbag system fully functional again.
Guide
How to create a repair order
4.8
Based on 277 reviews
What our customers say
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Luke Dukelast week„Top“
Konstantin Wuckertlast week„Top!“
mirko leistner3 weeks ago„Ok.“
Zsolt Szabólast month„The repair of the AIRBAG control unit was carried out quickly“
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schmidt uwe3 days ago„Very fast competent reliable Also cheaper than competitors! Consultation via Mail quick extremely competent and reliable“
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RM S3 days ago„I registered my airbag control unit online, got a repair order, sent in the device and after 2 days got a response, device ready. Top.. I would have just wished for a note about the defect of the device. For example cold…“
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Edmund Schell3 days ago„Top service, fast repair and friendly and helpful on the phone! Absolutely recommended!“
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ano nym4 days ago„Airbag24 is a very well organized company. The shipping procedure is correct and reliable. The quick repair right after receipt, the clear payment after repair, the UPS shipping right away. I am very satisfied with the r…“
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Mais Maislast week„⭐⭐⭐⭐⭐ I am absolutely thrilled and very satisfied with the service from Airbag24! The processing went smoothly and the delivery was incredibly fast. Everything worked perfectly. I can recommend Airbag24 without reservati…“
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Artur W.last week„Sent in a defective airbag control unit for my Ducato. After a few days the info that unfortunately it's unrepairable, but right away an offer for a replacement unit. Agreed and received a few days later. Installed and n…“
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Gunther Freymuthlast week„Super satisfied, top quality and shipping mega fast. Installation child's play, happy to order again anytime“
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Benjamin Hinrichslast week„Top!!“
Luke Dukelast week
