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Mercedes-Benz C-Class CL203 Sport Coupé Airbag Control Unit Repair
A 001 820 97 26 (00) · Label
- Label
- Connector
- Back
- A 001 820 97 26 (00)
- A2038204585
- A2038206385
- A2038207385
Mercedes-Benz C-Class CL203 Sport Coupé 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
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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.
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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 C-Class
- Series
- CL203 Coupé (2000-2008)CLC203 Coupé (2008-2011)
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 271 reviewsView all reviews →
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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 repair of my airbag control unit on Ducato 250 2.3 130 hp year 2018. The reassembly is easy. The airbag light went off after reconnecting the battery and everything went back to how it was before. Very good service!
Automatically translated · Original: French
⭐⭐⭐⭐⭐ 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 reservation and will gladly use the company again at any time. Many thanks for the excellent service!
Automatically translated · Original: German
What is a Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit?
The Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit is the central safety unit of your vehicle. It activates life-saving occupant restraint systems such as airbags and belt tensioners in the event of an accident. This control unit monitors sensors, stores crash data, and thus ensures the proper functioning of the entire restraint system for maximum safety.
It is an essential component of the passive safety system that detects accident situations in milliseconds.
The control unit processes data from various sensors and, if necessary, triggers the corresponding gas generators to deploy the airbag.
It also has its own power supply through internal capacitors to ensure it remains fully functional even if the vehicle battery fails.
Why is the Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit defective?
A defective Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit often results from internal electronic errors, a stored crash data record after an accident, or communication problems with other vehicle systems. This leads to the activation of the airbag warning light and can impair the function of the safety system.
Common causes are internal defects in the control unit hardware or software that impair proper function.
After an accident, the control unit stores crash data that prevents it from being triggered again and makes repairs to the Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit necessary.
Communication problems with connected modules or sensors can also cause the control unit to be reported as defective.
Common error codes for Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit repair
Common error codes for the Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit indicate specific problems that require diagnosis and repair to restore full safety system functionality. They can indicate internal defects or communication problems and often activate the SRS warning light.
- B1000 → Control unit communication error → Internal or external communication fault of the airbag control unit.
- B1024 → Ignition circuit 1 airbag driver side → Defect or open circuit in the ignition circuit of the driver airbag in the control unit.
- B1039 → Left rear seat ignition circuit (sidebag) – open circuit or fault → Problem in the ignition circuit of the left sidebag, often internal in the control unit.
- B103B → Right rear seat ignition circuit (sidebag) – open circuit or fault → Problem in the ignition circuit of the right sidebag, often due to an internal fault.
- B107C → Communication fault with TELE AID control unit → The airbag control unit cannot communicate with the TELE AID system.
- B1103 → Restraint system control unit defective → A general internal defect in the airbag control unit.
- B2D8A → Restraint system control unit N2/7 defective → A specific internal error code for the restraint system control unit.
- B2D82 → Internal control unit error → The control unit has an unspecified internal functional error.
- B2D8D → Restraint system control unit error → A general error within the internal logic of the restraint system control unit.
- B2D92 → Airbag control unit defective → The airbag control unit has been detected as defective, which requires repair or replacement.
- B2DA9 → Control unit error (general) → A generic error that indicates a functional failure of the control unit.
What part numbers are available for the Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit repair?
For Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit repairs, correct part numbers are crucial to ensure the compatibility and functionality of the replacement or repair part. Verified original and replacement part numbers ensure that the control unit fits your vehicle perfectly and functions correctly.
The original Mercedes-Benz OEM part number for this airbag control unit is 001 820 97 26 (00).
A functionally equivalent replacement unit has the part number 203 820 64 85 (09), which can replace the original number.
These numbers are specifically valid for the Mercedes-Benz C-Class Sports Coupé of the CL203 series (approx. 2001-2007).
Important information about Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit repair
Working on the Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit requires specialized expertise and equipment, as it is a safety-critical component. Improper handling can have serious consequences, which is why repairs should always be performed by qualified personnel.
Before removing or installing the control unit, the vehicle battery must be disconnected to prevent accidental airbag deployment.
After an accident, the crash data stored in the control unit must be professionally deleted, otherwise the system remains blocked and no new airbags can be deployed.
Repairing the Mercedes-Benz C-Class CL203 Sport Coupé airbag control unit is often preferred to replacing it because the vehicle-specific coding and integration can be retained.
Special diagnostic devices are required to read error codes and correctly clone or teach the control unit.
Guide
How to create a repair order
4.8
Based on 271 reviews
What our customers say
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Luke Duke2 days ago„Top“
Konstantin Wuckert6 days ago„Top!“
mirko leistner2 weeks ago„Ok.“
Zsolt Szabó4 weeks 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…“
Automatically translated · Original: French
Mais Mais2 days ago„⭐⭐⭐⭐⭐ 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…“
Automatically translated · Original: German
Artur W.2 days ago„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…“
Automatically translated · Original: German
Gunther Freymuth2 days ago„Super satisfied, top quality and shipping mega fast. Installation child's play, happy to order again anytime“
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Benjamin Hinrichs2 days ago„Top service, fast repair and shipping, nice and helpful support, gladly again anytime“
Automatically translated · Original: German
Roman Schneider3 days ago„Thanks to the team! Very fast processing, flawless shipping, control unit works perfectly again and was above all much cheaper than a new unit.“
Automatically translated · Original: German
Fritz Ring4 days ago„Top advice on the phone, my control unit/Fiat 500 arrived there on a Wednesday, Friday came the message: Defect found and successfully fixed, by Monday I already had it in the mail. The airbag light came on, the workshop…“
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Jessica Gerdes4 days ago„Serious company, fast and efficient work. Airbag message problem solved following their intervention on my calculator. Thank you.“
Automatically translated · Original: French
Gerald Di Nota5 days ago„Top!!“
Luke Duke2 days ago
