Airbag control unit with part number CX2314D374AC

What is the function of the airbag control unit CX2314D374AC?

The airbag control unit with part number CX2314D374AC is the central safety module in certain Jaguar models. It continuously monitors the restraint system’s sensors, processes acceleration data, and determines, in the event of a crash, whether and which airbags or seatbelt pretensioners need to be deployed to provide optimal protection for occupants.

As an electronic control unit (ECU), this module is essential for the vehicle’s passive safety. It communicates with the crash sensors located at the front and sides of the vehicle, as well as with the seat occupancy sensors, ensuring precise, split-second activation of the entire restraint system when needed.

This control unit is specifically designed for the vehicle architecture of Jaguar XF models. It is important to note that this component is also known under the alternative Jaguar OEM part numbers T2H23305 and GX7314D374AJ, which are functionally identical.

Why does the CX2314D374AC control unit fail?

A primary reason for failure of the CX2314D374AC control unit is the storage of crash data, even when no airbags were deployed during a minor impact. Other common causes include internal hardware defects—such as issues with connections to side airbags or seatbelt pretensioners—as well as communication failures with the diagnostic system.

A very frequent fault pattern is the persistent storage of crash data. After a collision, the control unit locks itself internally to prevent erroneous re‑activation. This condition is recorded in the fault memory and can only be cleared through specialized component‑level repair.

Internal board defects represent another source of failure. These include faulty connections to side airbags or seatbelt pretensioners, which appear in the fault memory as specific error codes. Such faults are often due to defective electronic components or poor solder joints.

A complete loss of communication is also a well‑known issue. In this case, the control unit becomes unresponsive via the diagnostic port, significantly complicating troubleshooting in the workshop and indicating a severe internal hardware defect.

How do you recognize a defect in the CX2314D374AC?

The most obvious sign of a defective CX2314D374AC airbag control unit is the permanently illuminated airbag warning light on the instrument cluster. Additionally, messages such as “Airbag defective” may appear on the display, or the control unit may no longer be readable by a diagnostic tool, indicating total failure.

The primary and unmistakable symptom is the active airbag warning light. This light fails to extinguish after starting the vehicle, signaling that the entire restraint system is disabled and will not function properly in the event of a crash.

Alongside the warning light, specific messages may appear on the driver information display. These directly indicate a fault within the airbag system and should be taken as an urgent signal to have the vehicle inspected at a workshop.

In the workshop, the defect often manifests as a lack of communication. When a technician attempts to read the fault memory, they receive no response from the control unit, confirming that the problem lies within the module itself rather than an external sensor.

Specific error codes pointing to issues with seatbelt pretensioners or side airbags can also suggest an internal defect in the CX2314D374AC control unit, even if the external components and their wiring remain intact.

In which Jaguar models is the CX2314D374AC control unit installed?

The CX2314D374AC airbag control unit, along with its equivalent variants T2H23305 and GX7314D374AJ, is primarily found across various trims of the Jaguar XF series. This includes both the X250 generation and the newer X260 generation, including facelifted models and performance variants.

At Airbag24, we repair this control unit for a range of Jaguar vehicles. Compatibility covers the following specific models and series:

Jaguar XF (X260 generation): This includes models from 2015 to 2020, as well as the subsequent facelift from 2020 to 2024.

Jaguar XF (X250 generation): Here, the control unit is installed in higher‑performance variants such as the Jaguar XFR, the Jaguar XF Portfolio, and the Jaguar R‑Performance XFR.

Is it worth repairing the CX2314D374AC?

Yes, repairing the CX2314D374AC airbag control unit is a highly cost‑effective alternative to purchasing a new unit. With savings of up to 90 percent compared to a new part that can cost as much as €750, refurbishment offers substantial cost reductions while maintaining full functionality.

The biggest advantage lies in the substantial cost reduction. Instead of investing in an expensive new part, the existing original control unit is expertly refurbished. This not only saves your budget considerably but also provides a sustainable solution.

After a professional repair, the control unit functions just like a brand-new component. All stored crash data is securely erased, and internal hardware defects are fixed, restoring the full functionality of the safety system.

An additional key benefit is that the repaired control unit requires no new coding or programming on the vehicle. As it is the original part, it can be easily reinstalled after repair, avoiding extra workshop costs and effort. A 12-month warranty is provided for the completed repair.

How does the CX2314D374AC repair process work at Airbag24?

The repair process at Airbag24 is simple and transparent. After removal, the defective CX2314D374AC control unit is sent to us. Our technicians perform a thorough analysis, resolve the fault at the component level, restore the device to factory settings, and then return it fully tested.

The process begins in your workshop with the proper removal of the airbag control unit. It is essential to disconnect the vehicle battery before removal to prevent short circuits or malfunctions in the vehicle’s electrical system.

Upon receipt at Airbag24, the control unit undergoes a comprehensive electronic inspection. This identifies the exact cause of the failure—whether it’s merely a crash-data entry issue or a more complex hardware defect on the circuit board.

The actual repair involves erasing crash data and repairing or replacing any faulty electronic components. The control unit is then thoroughly tested to ensure full functionality. Please note that the repair time may be extended if special replacement parts need to be ordered, if the unit was damaged by moisture, or if improper repair attempts were made.

Following successful repair and final inspection, the unit is securely packaged and shipped back to you. After reinstalling it in the vehicle, you simply need to clear the vehicle’s fault memory to reactivate the system.

What shipping options are available for the repair?

Airbag24 offers flexible and convenient options for sending in your defective control unit. You can either ship the package yourself or take advantage of our free UPS pickup service. For the return shipment, you have access to both free standard and paid express options, including cash-on-delivery.

For the outbound shipment, you have two choices: you can carefully pack the removed control unit and send it to our workshop address, or you can use our convenient, free UPS pickup service, which collects the package from a location of your choice.

When returning the repaired unit, we offer various UPS services. UPS Standard shipping is free for you. If faster delivery is needed, you can opt for UPS Express shipping.

Both standard and express shipping options can also be combined with cash-on-delivery. Of course, you are welcome to pick up your repaired control unit in person at our workshop.