What is a Jaguar Daimler XJ X308 airbag control unit?
The Jaguar Daimler XJ X308 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle. A professional Jaguar Daimler XJ X308 airbag control unit repair will restore full safety.
This safety-related electronic control unit is specifically designed for Jaguar XJ X308 models built between 1997 and 2003. It is responsible for monitoring and precisely triggering the passive safety systems, including airbags and seatbelt pretensioners.
The device integrates into the vehicle network via CAN bus and processes signals from various crash sensors. It ensures that the airbags are deployed correctly and promptly in an emergency to maximize occupant safety.
Why is the Jaguar Daimler XJ X308 airbag control unit defective?
A Jaguar Daimler XJ X308 airbag control unit often fails because it stores crash data after an accident, preventing restart, or internal electronic errors occur. If the control unit fails, it can no longer properly monitor and deploy the airbag systems, making immediate Jaguar Daimler XJ X308 airbag control unit repair essential.
Common causes of failure include full crash data logs after a collision, which prevent the error log from being erased. Internal hardware or software errors in the Restraints Control Module (RCM) can also lead to malfunctions.
Incorrect configuration of the control unit or problems with the acoustic warning circuit can also contribute to a defect. In such cases, a precise diagnosis and professional repair are required to correct the failure.
Common error codes for Jaguar Daimler XJ X308 airbag control unit repair
During the Jaguar Daimler XJ X308 airbag control unit repair, specific error codes are read that directly indicate problems with the airbag control unit itself. These codes, often displayed as flashing codes, help identify the exact cause of a defect and initiate the necessary repair to restore safety.
The following typical control unit-specific airbag error codes can occur:
- Code 13: Crash data in memory → Meaning: The control unit has saved crash data after an accident → Cause: Requires deletion of the data for further functions.
- Code 19: Airbag Circuit Error (Driver Side) → Meaning: Problem in the electrical circuit or control unit on the driver side → Cause: Defect in the module or wiring harness.
- Code 21: Airbag Circuit Error (Passenger Side) → Meaning: Problem in the electrical circuit or control unit on the passenger side → Cause: Defect in the module or wiring harness.
- Code 24: Internal airbag control unit error → Meaning: The airbag control unit has internal hardware or software problems → Cause: Internal defect in the RCM.
- Code 53: Acoustic warning circuit error → Meaning: Problem in the acoustic warning signal circuit for the airbag warning light → Cause: Error in the signal generator or its control.
- Code 54: Control unit configuration error → Meaning: The control unit is not programmed correctly or loaded with incorrect parameters → Cause: Incorrect configuration of the module.
These error codes must be read using a Jaguar-compatible diagnostic tool. A professional repair or replacement of the module will resolve these issues and restore full functionality to the airbag system.
What part numbers are available for the Jaguar Daimler XJ X308 airbag control unit repair?
For the Jaguar Daimler XJ X308 airbag control unit repair, two genuine OEM part numbers from Jaguar/Autoliv are known to be 100% verified. These specific numbers ensure the exact fit and compatibility with your vehicle model and are crucial for a successful airbag system repair.
The following OEM part numbers are confirmed for the Jaguar XJ X308 airbag control unit:
- HNC9666AD: Genuine airbag control unit (module) from Jaguar / Autoliv. This module is relevant for both the driver and passenger sides and is validated for XJ X308 models from 1998-2003.
- HNC9670AB: Original passenger airbag module from Jaguar / Autoliv. It is also explicitly listed in the Jaguar Classic Parts catalog for the XJ X308 from 1998-2003.
There are no different OEM numbers from other manufacturers for this component. These numbers are the only ones that have been validated multiple times as airbag control units for the Jaguar XJ X308 (1997-2003) and enable a successful Jaguar Daimler XJ X308 airbag control unit repair.