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Mercedes-Benz ML-Class W166 SUV airbag control unit repair
A 166 900 39 03 · Label
- Label
- Connector
- A 166 900 39 03
- A1669002003
Mercedes-Benz ML-Class W166 SUV 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.
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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
- Mercedes-Benz
- Model
- Mercedes-Benz ML-Class
- Series
- W166 SUV (2011-2015)
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 Mercedes-Benz ML-Class W166 SUV airbag control unit?
The Mercedes-Benz ML-Class W166 SUV 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.
It acts as the brain of the restraint system, continuously processing data from impact sensors. This critical component decides within milliseconds whether to deploy airbags and seatbelt pretensioners.
In addition, the control unit stores important crash data and error codes for later diagnosis after an accident. Its 12-volt power supply and vehicle-specific software are crucial for reliable operation.
Why is the Mercedes-Benz ML-Class W166 SUV airbag control unit defective?
The Mercedes-Benz ML-Class W166 SUV airbag control unit can be defective due to internal memory errors (e.g., EEPROM errors), communication problems on the CAN bus, or non-specific software inconsistencies. This often leads to crash data not being erased after an accident, which permanently activates the airbag warning light.
A common cause of defects is the storage of crash data after an accident that cannot be reset. This prevents the system from reactivating and the airbag warning light from going off.
Internal electronic errors such as EEPROM problems or power supply disruptions can also lead to failure. In such cases, a professional Mercedes-Benz ML-Class W166 SUV airbag control unit repair is necessary.
Common error codes for Mercedes-Benz ML-Class W166 SUV airbag control unit repair
During a Mercedes-Benz ML-Class W166 SUV airbag control unit repair, specific B-codes may occur, indicating internal problems or communication errors within the control unit. These include crash data deletion errors, memory errors, or CAN bus communication malfunctions that require specific diagnostics.
- B1000 → Control unit communication error → Signal loss or connection interruption.
- B1001 → Internal memory error in the control unit → Defective sectors or inconsistencies in the internal memory.
- B1005 → Invalid data in the airbag control unit → Damaged or incorrect configuration data.
- B1050 → Faulty power supply to the control unit → Interruption or fluctuation of the power supply.
- B1100 → Error deleting crash data → Permanent storage of accident information.
- B1200 → EEPROM error in the control unit → damage to the non-volatile memory.
- B1250 → Software inconsistency in the airbag control unit → Incompatibility or corruption of the internal software.
- B1400 → Malfunction of the bus communication (CAN bus) of the airbag control unit → Disturbance in the data flow to other control units.
What part numbers are available for the Mercedes-Benz ML-Class W166 SUV airbag control unit repair?
For the Mercedes-Benz ML-Class W166 SUV airbag control unit repair, specific OEM part numbers are relevant because the control unit is vehicle-specific. Verified original Mercedes-Benz numbers include A1669002713, A1669003903, and A1669001709, which come directly from the manufacturer and are suitable for this model.
These original Mercedes-Benz part numbers guarantee compatibility with the ML W166 SUV and are essential for proper function. They only apply to the airbag control unit, not separate sensors or modules.
It is important to use only these exact OEM numbers to ensure safety and system integration. A professional repair shop can help identify the correct part number for your Mercedes-Benz ML-Class W166 SUV airbag control unit repair.
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 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 Goldammer3 days ago„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
Automatically translated · Original: German
Christian Maegerlein5 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 Buien6 days ago„Uncomplicated service. Fast and thorough. Can only recommend.“
Automatically translated · Original: German
Abdul KS6 days ago„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“
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“
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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
