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Home >> Jaguar >> 2017 >> XJR Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission/Transaxle External Controls -- XJ/X351 >> Automatic Transmission/Transaxle External Controls >> Description And Operation >> External Controls - System Operation And Component Description (G1772599) >> Park Interlock And Neutral Lock >> Notes
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Park Interlock And Neutral Lock: Notes

Neutral lock is a requirement for the TCS. The TCS is always locked at ignition on when the engine is not running, except after an engine stall when the selector is not in 'P' (park) or 'N' (neutral).

If, when driving with the TCS in 'S', 'D' or 'R' (reverse) at a speed of more than 5 km/h (3 mph), the driver selects 'P' or 'N':

The transmission will only engage 'P' position once the vehicle speed is less than 2 km/h (1 mph).

If the driver selects 'N' and releases the brake pedal with a vehicle speed of less than 5 km/h (3 mph), the TCS will be locked 2 seconds after 'N' is selected. The TCS will remain locked until the driver presses the brake pedal again.

To ensure that a driver request to change from a non-driving range ('N' for example) to a driving range ('D' for example), the park interlock and neutral lock features are used in conjunction with the intermediate position.

If the transmission receives a range change request without the brake pedal pressed, the TCM initiates a soft lock function. The transmission will remain in 'P' or 'N', depending on the starting position.

If a transmission position letter is flashing in the message center and the vehicle has no drive, the driver must: