Intelligent Speed Limiter (ISL)

WARNING: This page is about a different car, the 2018 Jaguar XF, 2017 Jaguar XF, and 2016 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

The ISL indicator lamp will illuminate when the ISL has been selected. The ISL restricts the vehicle's maximum speed to the current legal applicable road speed limit. The speed limit information is provided by the navigation system and Traffic Sign Recognition (TSR). If a valid speed limit is not available, ISL will be deactivated and the limiter will default to ASL.

The ISL system will only respond to speed settings from the lowest possible, 19 mph (30 km/h) and maximum speed limit 80 mph (130 km/h). Below this speed range a message, SET POINT OUT OF RANGE will be displayed in the message center. Any traffic sign recognition above the maximum speed limit range, the ISL will set the speed limiter to unlimited.

Adjustment, to a maximum of 6 mph (10 km/h) above and below the legal speed limit, can be set operating the speed control SET '+' and '-' switches. If a legal speed limit is detected higher or lower than the current vehicle speed, the ISL will adjust the speed at a safe level. Operating the 'RES' switch will enable the vehicle to reach this limit at a faster rate.

If the vehicle speed exceeds the speed limit by more than 2 mph (3.5 km/h) a warning will be displayed in the message center. If the speed exceeds the speed limit by 5 mph (7 km/h) for more than 4 seconds a chime will sound.

Operating the 'CAN' switch will put the ISL into stand-by mode, the ISL is re-activated by operating the 'RES' switch.

If the kick-down is activated (by fully depressing the accelerator pedal), ISL will be overridden.

On a vehicle equipped with the speed limiter ASL and ISL systems, if the ASL speed limiter system was in use when the ignition was turned off (ignition mode 0), the ASL selected mode is saved and activated again when the ignition is turned back on (ignition mode 6). However the speed settings are not remembered and will have to be set again. If the ISL speed limiter system was in use when the ignition was turned off, upon the ignition being turned back on, the ISL is deactivated and the speed limiter defaults to the ASL operating mode.