Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Jaguar XJ8 BaseFACTORY OEM SERVICE PROCEDURE
Transmission Control Module (TCM) & Main Control Valve Body: Notes
CAUTION:
When working with the transmission control module (TCM) and main control valve body, all suitable safety precautions must be taken to protect the component against Electrostatic Discharge (ESD). Failure to follow these instructions may result in component damage.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.