Speed Control

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Jaguar XKR, 2009 Jaguar XK8, 2008 Jaguar XKR, 2008 Jaguar XK8, and 2007 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

The speed control system is integrated with the engine management system and uses fueling intervention to automatically maintain a set vehicle speed. Once engaged, the system can also be used to accelerate the vehicle without using the accelerator pedal. The speed control system comprises the following components:

Resume/Suspend switch
'+' and '-' (set/accelerate and decelerate)
Clock spring

The speed control system also uses inputs from the brake pedal switch, the APP sensor, the ECM and the ABS Control Module.

The speed control is operated by the driver using only the steering wheel switches. When speed control is active, the ECM controls the electronic throttle to adjust the fuel supply as required to maintain the set speed.

The minimum set speed for speed control is 18 mph (30 (km/h). Speed control is automatically suspended if the following conditions apply:

Vehicle speed falls below 18 mph (30 km/h).
The brake pedal is pressed.
The cancel button is pressed.
Neutral, park or reverse gear is selected.
The difference between actual speed and the set speed is too great.
When the vehicle speed reaches a maximum speed of 120 mph (192 kph).
If the accelerator pedal is used to accelerate beyond the set speed for too long.