Airbag control unit with part number C2P24640

What is the function of the airbag control unit C2P24640?

The airbag control unit C2P24640 is the central control module for the passive safety system in specific Jaguar XK and XKR models. It processes data from crash sensors to precisely deploy airbags and seatbelt pretensioners in the event of a collision, while continuously monitoring the entire system for faults.

As the “brain” of the restraint system, this electronic module determines which safety components must be activated within milliseconds. It ensures the proper functioning of all connected sensors and actuators—such as airbags and seatbelt pretensioners—and, in case of malfunctions, alerts the driver via the airbag warning light.

Due to its critical role, flawless operation of the C2P24640 control unit is essential for occupant safety. Rather than replacing the entire unit, targeted electronic repair is often possible when defects occur.

What types of failures occur with C2P24640?

Typical failures of the C2P24640 control unit include stored crash data after an accident that locks the device, as well as internal electronic faults. Often, only individual components on the circuit board are affected, allowing for precise repairs instead of a full replacement.

One of the most common reasons for repair is the persistent storage of crash data. Even if the airbags did not deploy during an accident, the control unit may lock itself for safety reasons. This condition can typically be resolved by a specialized workshop through data erasure.

In addition, hardware issues may arise in individual components such as processors or memory chips. Specialized service providers can identify these defects at the component level and either refurbish or replace the affected parts. This applies to control units from various manufacturers, including Bosch, Delphi, TRW, Continental, and Denso.

How do you recognize a fault in the C2P24640 control unit?

A fault in the C2P24640 control unit primarily manifests as the airbag warning light remaining illuminated on the dashboard. Other signs include loss of communication with diagnostic equipment, preventing error codes from being read or cleared, or the presence of an internal control unit fault.

The clearest symptom is the airbag warning light that fails to turn off after starting the vehicle, indicating an active, safety‑critical fault in the restraint system.

In the workshop, the fault often becomes apparent when no connection can be established with the control unit. The diagnostic tool displays “No Communication,” making further troubleshooting impossible.

Another clear indicator is an error code stored in the fault memory, signaling an “internal fault” within the control unit itself. Such errors usually cannot be cleared and require a thorough hardware inspection.

Following an accident, the control unit may remain locked even if the airbags did not deploy. The warning light stays on, indicating that the system needs to be reset.

In which Jaguar models is C2P24640 installed?

The airbag control unit with part number C2P24640 is specifically fitted in classic Jaguar sports cars. These include the Jaguar XK X100 and XKR X100 series from 1996 to 2005, as well as later variants of the Jaguar XKR X150.

At Airbag24, we repair the C2P24640 control unit for the following models:

Jaguar XK X100 (1996–2005)

Jaguar XKR X100

Jaguar XKR X150

It is crucial to verify the exact part number to ensure compatibility, as different control units may be used within the same model range.

How does repair work at Airbag24?

After sending the removed C2P24640 control unit to Airbag24, a professional fault analysis is performed. Based on the diagnosis, crash data is erased or defective electronic components are replaced. Final functional tests confirm the quality of the repair, which comes with 2 years’ statutory liability for defects.

It is recommended to first verify at a specialized workshop that the fault truly originates from the control unit and is not caused by another component, such as a sensor or wiring harness.

With 20 years of experience and over 20,000 repairs completed, Airbag24 follows a proven process: First, a comprehensive diagnosis is carried out using state-of-the-art technology. This is followed by targeted repairs, which may involve erasing crash data or replacing components depending on the nature of the fault. In some cases, reprogramming may also be necessary.

Please note that for exceptional defects, such as moisture damage or damage resulting from previous repair attempts, as well as when ordering rare spare parts is required, no guaranteed repair time can be provided.