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.
External Controls - Description & Operation: Introduction
The Transmission Control Module (TCM) contains software to provide operation as a semi-automatic 'Jaguar Sequential Shift' transmission.
The TCM allows the transmission to be operated as a conventional automatic unit by selecting P, R, N, D on the selector lever. In this mode, the selector lever is linked, via the selector cable, to the transmission to provide a mechanical interface.
Movement of the selector lever across the 'L' gate to the 'S' position is sensed by a Hall effect proximity sensor located within the selector mechanism assembly, and puts the transmission into electronic 'Sport' mode.
Two gear change 'paddle' switches are fitted at the rear of the steering wheel and allow the driver to operate the transmission as a semi-automatic manual gearbox using the Jaguar Sequential Shift feature.
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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.