Works like a charm!
Mercedes-Benz CLA-Class C193 Saloon airbag control unit repair
Mercedes-Benz CLA-Class C193 Saloon 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(233)
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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 CLA-Class
- Series
- C193 Saloon (2025-XXXX)
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 Mercedes-Benz CLA-Class C193 Saloon airbag control unit?
The airbag control unit is the central control unit of the restraint system (SRS) in the Mercedes-Benz CLA-Class C193 Saloon. It evaluates the signals from the crash sensors. In an accident, it decides within milliseconds which airbags and seatbelt pretensioners to deploy.
The unit monitors the system continuously. It reports faults via the airbag warning light. It is installed in the Mercedes-Benz CLA-Class C193 Saloon (since 2025).
After an accident, it stores crash data and locks itself. This also applies if no airbag has deployed.
Without a working control unit, the restraint system is not ready for use in an emergency. The warning light alerts you to this. Take this warning seriously and have the cause investigated.
Why is the Mercedes-Benz CLA-Class C193 Saloon airbag control unit defective?
The most common cause is crash data stored after an accident. This also applies if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion on connectors, and voltage spikes.
Crash data cannot be cleared with an ordinary diagnostic tool. The fault remains. Simply resetting the fault memory therefore does not help; the unit has to be repaired.
Voltage spikes occur, for example, with a weak battery or when jump-starting. Components age. Solder joints become unreliable over time. Moisture causes connectors to corrode.
How you can tell: The airbag warning light stays on permanently. The fault memory cannot be cleared. The diagnostic tool cannot establish a connection.
Common error codes for Mercedes-Benz CLA-Class C193 Saloon airbag control unit repair
The error codes on the Mercedes-Benz CLA-Class C193 Saloon point to internal faults in the control unit, communication faults, an unsuitable supply voltage, interruptions in squib circuits or stored crash data.
These codes do occur. The list is not exhaustive.
- B1000 → General fault in the airbag control unit
- B2500 → Internal control unit fault
- B1561 → Deployment threshold exceeded, crash data stored
- U0151 → Communication with the airbag control unit lost
- B1315 → Control unit voltage too low
- B1318 → Control unit voltage too high
- B1420 → Open circuit in the driver airbag squib circuit
- B1421 → Open circuit in the passenger airbag squib circuit
A diagnostic tool reads out the error codes. However, a single code does not prove that the control unit is defective. Connectors, wiring or an airbag module can also be the cause. Only testing provides clarity.
State in the repair order which codes were displayed. This helps with the testing. If you have a diagnostic report, include it with the unit.
What part numbers are available for the Mercedes-Benz CLA-Class C193 Saloon airbag control unit repair?
The part number is printed on the label of the control unit. It determines the exact version. Within a model series there are different numbers depending on equipment and year of manufacture.
For the Mercedes-Benz CLA-Class C193 Saloon, there is no verified list of numbers. Read the number from the label of your removed unit. Enter it in the repair order. This makes clear which version it is. Whether the unit is defective is only shown by reading out the fault memory or by testing.
How to proceed: Have the fault memory read out. Disconnect the battery. Remove the control unit. Create a repair order online and send in the unit.
Processing at Airbag24 usually takes 3–4 working days and includes testing, repairing and checking your unit. 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…“
Automatically translated · Original: German
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
