Airbag control unit with part number T2H23305

What is the function of the airbag control unit T2H23305?

The airbag control unit with part number T2H23305 is the central control module for the occupant restraint system (SRS) in the Jaguar XF of the X260 series. It continuously analyzes data from the acceleration and yaw rate sensors to precisely deploy the airbags and seatbelt pretensioners at the right moment in the event of a collision.

As a core component of the Supplemental Restraint System (SRS), the T2H23305 is responsible for the vehicle’s passive safety. It maintains constant communication with all relevant sensors and actuators of the airbag system.

Its task is to reliably detect accident scenarios and activate the appropriate restraint devices—such as front, side, or head airbags, as well as pyrotechnic seatbelt pretensioners—to provide optimal protection for occupants.

Why does the airbag control unit T2H23305 fail?

The most common reason for requiring repair of the T2H23305 control unit is the storage of crash data after an accident. Other typical causes include hardware defects such as broken wiring, corroded connectors, or issues with the device’s internal power supply that prevent proper operation.

Following a collision—even if not all airbags deployed—the so‑called crash data is permanently stored in the control unit’s internal memory. This data blocks the unit’s functionality and must be professionally erased to restore the system to operational readiness.

Often, the root cause lies in the vehicle’s electrical environment. Faulty or interrupted wiring between the control unit and individual SRS components is a frequent issue. Similarly, defective connectors can disrupt communication and trigger error messages.

How do you recognize a fault in the T2H23305?

A defect in the T2H23305 airbag control unit typically manifests as a constantly illuminated or intermittently flashing airbag warning light on the instrument cluster. In many cases, communication between the control unit and an external diagnostic tool also ceases, complicating troubleshooting.

The clearest indication of a problem in the airbag system is the red SRS or airbag warning light. If this light remains on continuously, it signals a critical fault that may result in the deactivation of the airbags.

Another symptom is when the workshop’s diagnostic equipment cannot access the airbag control unit’s fault memory. This lack of communication often points to an internal defect within the unit or a power supply issue.

For safety reasons, it is essential to visit a specialized workshop immediately upon noticing these symptoms. Failure of the airbag system poses a significant safety risk to all vehicle occupants.

In which models is the T2H23305 installed?

The part number T2H23305 is the specific original airbag control unit for the second-generation Jaguar XF (X260 series). This includes both the original models from 2015 onward and the revised facelift versions produced starting in 2020.

At Airbag24, we professionally repair the T2H23305 control unit for the following Jaguar models and series:

Jaguar XF (X260), model years 2015–2020

Jaguar XF (X260 Facelift), model years 2020–2024

As a verified OEM part number, compatibility is guaranteed within these specific vehicle generations.

How is the T2H23305 professionally repaired?

Repair of the T2H23305 at Airbag24 involves precise diagnostics, professional erasure of stored crash data, and thorough inspection of the internal electronics. After restoration, the control unit undergoes comprehensive testing and is returned with 2 years' statutory liability for defects. If airbags have already deployed, replacement is mandatory.

Before removing the control unit, a specialized workshop should first read out the vehicle’s fault memory. This ensures that the fault truly resides in the control unit itself, rather than in external wiring or sensors.

Upon submission to Airbag24, the unit undergoes an initial inspection. The key step in the repair process is resetting the internal memory and erasing the crash data, thereby restoring full functionality to the control unit.

An important safety note: If airbags or seatbelt pretensioners were deployed during an accident, repairing the control unit is not permitted. In such cases, the unit must be replaced with a new one to ensure full protective functionality in any subsequent collision.

All repairs performed at Airbag24 are subject to strict quality controls and come with 2 years' statutory liability for defects covering the work performed.