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Volkswagen Golf GTI Mk4 Airbag Control Unit Repair
1C0 909 605 A · Label
- Label
- Connector
- Back
- 1C0 909 605 A
- 1C0 909 605 F
- 1J0 909 603
- 1J0 909 608
Volkswagen Golf GTI Mk4 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
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
- Volkswagen
- Model
- Volkswagen Golf GTI
- Series
- Mk4
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 Volkswagen Golf GTI Mk4 airbag control unit?
The Volkswagen Golf GTI Mk4 airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules, which is crucial for safety.
This essential component, also known as the Airbag Control Unit (ACU), is specifically designed for the Volkswagen Golf IV (Type 1J) built between 1997 and 2003, including the GTI models.
It receives and processes signals from crash sensors in order to react quickly in the event of an impact and trigger the protective systems.
Why is the Volkswagen Golf GTI Mk4 airbag control unit defective?
A faulty Volkswagen Golf GTI Mk4 airbag control unit is often caused by internal memory corruption (error code 65535), low supply voltage (00532), or communication errors (B1000). Such failures severely impair safety systems and require urgent professional Volkswagen Golf GTI Mk4 airbag control unit repair.
Common causes include crash data not being deleted after an accident or faulty coding after replacing an airbag sensor.
Voltage fluctuations in the vehicle electrical system or age-related wear of the internal components can also lead to the failure of the control unit.
The airbag warning light on the dashboard usually indicates that the airbag system needs to be checked and diagnosed.
Common error codes for Volkswagen Golf GTI Mk4 airbag control unit repair
When repairing a Volkswagen Golf GTI Mk4 airbag control unit, certain error codes are common, indicating problems with the control unit itself or its calibration. Correctly diagnosing these errors is crucial for restoring vehicle safety and correcting any failures.
- 01217 → Side Airbag Igniter; Driver's Side - Resistance too high → Often triggered by wiring problems or a defective igniter on the side airbag, but requires a control unit analysis.
- 01221 → Crash sensor side airbag driver's side: No or incorrect basic setting / adaptation → Occurs after replacing sensors or the control unit, requires special coding in the workshop.
- 01222 → Crash sensor side airbag passenger side: No or incorrect basic setting / adaptation → Similar to 01221, affects the passenger side and requires correct initialization.
- 00532 → Supply voltage B+ - signal too low → Indication of an undervoltage that impairs the function of the airbag control unit and leads to errors.
- 65535 → Internal control unit memory error → A critical internal defect that often cannot be repaired without specialized repair or replacement of the control unit.
- B1000 → Control unit communication error → Indicates general communication problems of the airbag control unit with other systems or internally.
What part numbers are available for the Volkswagen Golf GTI Mk4 airbag control unit repair?
Specific OEM part numbers are crucial for Volkswagen Golf GTI Mk4 airbag control unit repairs, as the control unit is programmed specifically for the software and vehicle. Only an exact number match ensures the correct function of the safety system in your Volkswagen Golf GTI Mk4.
The following part numbers are 100% verified for the Volkswagen Golf GTI Mk4 airbag control unit (type 1J, built 1997-2003):
- 1C0 909 605 F : A very commonly used original VAG number, often produced by Bosch as a supplier.
- 1J0 909 609 : Another common OEM part number found in various Golf IV GTI models.
- 1J0 909 609 A : A variant of the 1J0 series, which is also precisely tailored to the airbag system of the Golf GTI Mk4.
- 1J0 909 603 AN : This number identifies an airbag control unit without side airbags, rarer but relevant for earlier Golf IV models.
These part numbers are exclusively for airbag control units and confirm compatibility with the Volkswagen Golf GTI Mk4, which is important when repairing.
4.8
Based on 246 reviews
What our customers say
„Ok.“
Zsolt Szabólast week„Works like a charm!“
Leolylast month„Everything went perfectly, I can only recommend it.“
Automatically translated · Original: German
ka irgendwas3 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 Goldammer4 days ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerlein6 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 Buienlast week„Uncomplicated service. Fast and thorough. Can only recommend.“
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Abdul KSlast week„All great👍“
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Edin Avdiclast week„All great, fast delivery. Thanks.“
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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“
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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“
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Sven Wegenerlast week„Ok.“
Zsolt Szabólast week
