What is a Jaguar Daimler XJ X351 airbag control unit?
The Jaguar Daimler XJ X351 airbag control unit is the central safety unit in your vehicle, essential in the event of a collision. It continuously monitors sensors, collects important crash data, and controls the precise deployment of all passive safety systems to ensure maximum occupant protection in the event of an accident. This module is critical to the functionality of every airbag system.
The airbag control unit, also known as the Restraints Control Module (RCM) or SRS module, was developed specifically for the Jaguar XJ X351 series. It coordinates the built-in driver and passenger airbags, as well as other restraint systems.
It precisely processes signals from impact sensors, acceleration sensors, and the vehicle's seat belt pretensioners. The module also communicates with other important control units such as ABS and ESP via the internal bus system.
In the event of a collision, the device evaluates the sensor data at lightning speed and decides whether to activate the necessary airbags. It also triggers preventive seatbelt pretensioners and can deactivate airbags if necessary, for example, when child seat detection is required.
The module supports standard EOBD/OBD-II diagnostic interfaces, allowing error codes to be read and cleared. This allows the system status to be checked at any time.
Why is the Jaguar Daimler XJ X351 airbag control unit defective?
The Jaguar Daimler XJ X351 airbag control unit becomes defective because it stores irreversible crash data after an accident, making reinitialization impossible. Internal electronic errors or communication disruptions can also lead to failure. These defects require a specialized Jaguar Daimler XJ X351 airbag control unit repair to restore the vehicle's safety functions and prevent potential risks.
After a vehicle accident, the airbag control unit permanently stores crash information. This data prevents the module from being used again without a special reset procedure or repair.
Common causes of defects include internal short circuits or damaged components within the electronics. Such damage requires specialized knowledge to repair the failure.
Communication errors with other vehicle modules via the CAN bus can also lead to a failure. This often manifests itself in an illuminated airbag warning light in the instrument cluster.
A professional diagnosis is essential to identify the exact cause of the defect. This is the only way to ensure an effective Jaguar Daimler XJ X351 airbag control unit repair.
Common error codes for Jaguar Daimler XJ X351 airbag control unit repair
When repairing a Jaguar Daimler XJ X351 airbag control unit, specific error codes are crucial for diagnosis. Typical codes like B1000 indicate communication errors, while B2291 signals internal control unit faults. U0155 indicates a communication problem with the restraints control module, which indicates problems with the airbag control unit itself.
- B1000 → Control unit communication error → Problems with data transmission of the airbag ECU.
- B2291 → Airbag control unit error (flash code) → Internal defect or data problem in the RCM module.
- U0155 → Communication error with Restraints Control Module (RCM) → Connection or signal disturbance to the airbag control module.
What part numbers are available for Jaguar Daimler XJ X351 airbag control unit repair?
For the Jaguar Daimler XJ X351 airbag control unit repair, two primary, 100% verified OEM part numbers are relevant. These are AH42-14B588-AA and the alternative, equivalent number 28212865. These numbers confirm exact compatibility with the Jaguar XJ X351 model years 2009-2015, especially for the 5.0 V8 engine.
The main OEM part number for the Jaguar XJ X351 airbag control unit is AH42-14B588-AA. This number has been confirmed through dealer quotes and compatibility testing.
The number 28212865 is an equivalent alternative to AH42-14B588-AA and is also verified as a genuine Jaguar part. Both are suitable for this specific model.
These part numbers apply specifically to the Jaguar XJ X351 model years 2009 to 2015, especially for vehicles with the 5.0 V8 engine. Precise compatibility is crucial.
No other specific, confirmed part numbers from manufacturers such as Bosch or Continental for this airbag control unit could be found. Therefore, the Jaguar numbers listed are the primary references.
When repairing a Jaguar Daimler XJ X351 airbag control unit, it is always recommended to verify the vehicle's vehicle identification number (VIN). This ensures the exact fit of the replacement part.