What is a Jaguar Sovereign X300 airbag control unit?
The Jaguar Sovereign X300 airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors all relevant sensors and components, stores important crash data, and thus ensures proper function for maximum occupant safety.
This safety-critical component reacts to impact events in milliseconds and is crucial for occupant protection. It processes signals from acceleration sensors and controls the ignition of the pyrotechnic systems.
A Jaguar Sovereign X300 airbag control unit repair is often necessary when the airbag warning light is illuminated or error codes indicate internal problems. A professional diagnosis is essential.
Why is the Jaguar Sovereign X300 airbag control unit defective?
A Jaguar Sovereign X300 airbag control unit often fails due to internal electronic errors, a compromised power supply, or persistent crash data. These problems cause the airbag warning light to illuminate and the system to no longer perform its protective function, necessitating repair or replacement.
Common causes include age-related component failure or overvoltages in the vehicle electrical system, which can damage the control unit's sensitive electronics. This often manifests itself in persistent error codes that cannot be erased.
Another reason for failure can be a full crash data memory after an accident; the control unit is then blocked and must be reset or repaired before it can be fully functional again.
Common error codes for Jaguar Sovereign X300 airbag control unit repair
When repairing the Jaguar Sovereign X300 airbag control unit, specific SRS system error codes indicate problems within the control unit itself, not with the sensors or seatbelt pretensioners. These codes require precise diagnostics using specialized equipment to identify the cause of the failure and repair the system.
- B1240: Airbag ECU internal fault → Internal control unit fault → Cause: Defective internal components of the control unit.
- B1241: Airbag ECU power supply fault → Control unit power supply fault → Cause: Interruption or fluctuation in the control unit power supply.
- B1243: Airbag ECU memory fault → Memory error in the control unit → Cause: Damage or corruption of the internal memory of the ECU.
- B1244: Airbag ECU crash data memory full → Crash data memory full → Cause: The control unit has permanently stored the crash data after an impact.
- B1310: Airbag ECU communication fault → Communication error control unit → Cause: Malfunction in the data transmission between the control unit and other vehicle systems.
- B1100: Airbag ECU self-test fault → ECU self-test fault → Cause: The control unit failed its internal self-test.
- B1000: Control unit communication error → General communication error of the control unit → Cause: General problems in communication with the control unit.
What part numbers are available for Jaguar Sovereign X300 airbag control unit repair?
For Jaguar Sovereign X300 airbag control unit repair, OEM part numbers 922.1578.5675.24212 (Jaguar original) and XR83-14B321-AC / F5DF-14B056-AA (Ford OEM replacement) are the verified and functionally equivalent options. These numbers guarantee compatibility with the 1995-1997 Jaguar Sovereign X300.
Part number 922.1578.5675.24212 comes directly from the official Jaguar Land Rover Classic Parts catalog and is the original airbag module for the X300 model year 1995-1997.
Alternatively, the Ford OEM parts XR83-14B321-AC and F5DF-14B056-AA have established themselves as proven replacements for the X300 airbag control unit and are confirmed by experienced users as compatible and functional.
It is important to note that there are no separate OEM alternatives listed for the Jaguar X300 airbag control unit from manufacturers such as Bosch or Continental, which underscores the importance of these specific part numbers.