Airbag control unit with part number 8240968

What is the function of Airbag Control Unit 8240968?

The Airbag Control Unit 8240968 is the central safety electronic control unit (ECU) specifically designed for the Dacia Spring I from model year 2021 onwards. It processes signals from crash sensors to precisely deploy airbags and seatbelt pretensioners in the event of a collision, ensuring the proper functioning of the entire restraint system.

As the brain of the passive safety system, this control unit continuously monitors data from acceleration and pressure sensors throughout the vehicle. These sensors detect the severity and type of impact, enabling the control unit to react within milliseconds.

Based on the incoming data, the ECU determines which safety components need to be activated. In addition to front and side airbags, this includes pyrotechnic seatbelt pretensioners that securely hold occupants in their seats during a collision.

Why does Airbag Control Unit 8240968 fail?

The most common cause of failure is the storage of non-erasable crash data after an accident, which permanently locks the unit. Other typical defects include internal electronic malfunctions, water damage, short circuits, or complete loss of communication with diagnostic tools.

After an airbag or seatbelt pretensioner deploys, the control unit writes so‑called “crash data” into its internal memory. This is a manufacturer‑imposed safety measure that blocks the device from further use until a professional reset is performed. Simply clearing the fault memory is not sufficient.

A further widespread electronic issue manifests as a complete communication failure. The control unit no longer responds to diagnostic requests via the OBD‑II interface, making troubleshooting impossible and often indicating a hardware problem on the circuit board.

External factors such as moisture ingress can lead to corrosion and short circuits. Similarly, aging electronic components like processors or memory chips may fail, causing internal hardware or software errors that impair system functionality.

How do you recognize a defect in Control Unit 8240968?

A defect in Control Unit 8240968 primarily shows up as the airbag warning light remaining constantly illuminated in the instrument cluster. Additionally, error codes such as U1XXX or B1XXX may be logged, or the unit may fail to respond at all during a diagnostic query.

The most obvious symptom is the airbag indicator light that does not turn off after starting the vehicle. This signals a critical fault in the restraint system, which is then completely deactivated for safety reasons.

During a workshop diagnosis, error codes indicating an “internal control unit fault” are often read out. These errors generally cannot be permanently cleared using standard diagnostic equipment.

A severe symptom occurs when the diagnostic tool cannot establish any connection with the airbag control unit. This total refusal to communicate makes it impossible to retrieve error codes and directly points to a serious internal malfunction.

In which models is Control Unit 8240968 installed?

The airbag control unit with part number 8240968 is specifically used in the Dacia Spring I model series from model year 2021 onward. Airbag24 offers professional repair services for this control unit to restore full functionality.

This ECU is a key safety component in the following vehicle model:

Dacia Spring I (from model year 2021)

Given that this is a relatively new vehicle model, repair represents a particularly cost-effective alternative to purchasing an expensive new part.

How is Control Unit 8240968 repaired?

At Airbag24, repairs begin upon receipt of the removed control unit. Following a professional diagnosis, specialists reset the crash data, replace defective electronic components, and perform a final functional test. All repairs come with a 12-month warranty.

The process at Airbag24 is designed for reliability and efficiency. After you send in your defective Control Unit 8240968, it undergoes a detailed incoming inspection and analysis to pinpoint the exact fault.

Depending on the nature of the fault, the repair either involves professionally resetting the stored crash data or performing component-level repairs. Defective microchips, solder joints, or other parts on the circuit board are expertly replaced.

Upon successful completion of the repair, the control unit undergoes a comprehensive final test to ensure seamless communication and full operational readiness for reinstallation.

What shipping options does Airbag24 offer?

Airbag24 provides flexible shipping options. You can send your control unit back yourself at no cost, or arrange a convenient UPS pickup from your preferred location. For the return shipment, you can choose between free standard UPS shipping and faster UPS Express shipping—both also available with cash-on-delivery.

For sending your control unit to Airbag24, you have two convenient options: you can ship the package yourself, or request a UPS pickup from an address of your choice, such as your workshop or home.

When returning your repaired unit, you can select either free standard UPS shipping (1–3 business days) or faster UPS Express shipping (1–2 business days).

Both standard and express shipping are additionally offered with a cash-on-delivery service. Alternatively, you can pick up your repaired control unit directly on-site.

Is it worth repairing 8240968?

Repairing control unit 8240968 offers significant cost savings compared to a new part, which often costs between 200 and 500 euros. The repair restores full, TÜV‑compliant functionality and provides an environmentally friendly solution that avoids unnecessary electronic waste.

The biggest advantage is its cost-effectiveness: a repair costs only a fraction of a new control unit, enabling budget‑friendly yet fully safe restoration without any loss of quality.

A professionally repaired control unit is fully functional again and meets all safety standards required for the main vehicle inspection (TÜV). The focus is on restoring the original device to a condition that complies with the manufacturer’s specifications.

By choosing repair, you also make an active contribution to environmental protection. You prevent the premature disposal of a complex electronic component and conserve valuable resources that would otherwise be needed to produce a new part.