Electrostatic Discharge (ESD): Notes
WARNING: This page is about a different car, the 2005 Jaguar XJR, 2005 Jaguar XJ8, 2004 Jaguar XJR, and 2004 Jaguar XJ8. However, it is still accessible from the selected car via links, so may be relevant.
Make sure all possible safety precautions are taken to protect the TCM and main control valve body unit against ESD.