Adaptive Speed Control

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

WARNING: The adaptive speed control system is not a collision warning or avoidance system. At all times the driver must be prepared to intervene to control the vehicle speed.

Adaptive speed control operation is similar to the standard speed control system for engaging, suspending and resuming speed control.

The main differences between the two systems:

The adaptive speed control remains engaged below 32 km/h (20 mph).
The adaptive speed control uses the brakes to slow the vehicle, to a halt if necessary.

The adaptive speed control can be suspended by operating the 'CANCEL' switch, or the brake pedal. It can be reengaged by operating the resume 'RESUME' switch once the vehicle speed is above 10 km/h (6 mph).

The adaptive speed control system utilizes the following main components:

Adaptive Speed Control Module (ASCM)
Steering wheel switchpack - Right
Powertrain Control Module (PCM)
Fuel injectors
Anti-lock Brake System (ABS) control module and Hydraulic Control Unit (HCU)
Adaptive speed control warning indicator - In the Instrument Cluster (IC)
Forward alert warning indicator.

The adaptive speed control system uses a forward looking radar sensor, integrated into the ASCM. The radar sensor scans the road ahead and looking for objects that are moving at a different speed to the actual vehicle speed. When a target is identified, the adaptive speed control system will monitor the time gap between itself and the target vehicle. When the gap falls below a set driver selected level, the adaptive speed control system will intervene until the correct gap is attained. The adaptive speed control system slowing the vehicle by backing off the throttle and/or applying the brakes. The driver can chose between four gap settings, 0.8, 1.3, 1.8 and 2.3 seconds.

Adaptive speed control is active when the vehicle is moving. Adaptive speed control only functions when a set speed is entered via the operation of the SET '+' switch. The adaptive speed control system only intervenes with the set speed when it detects a slower target vehicle in the host vehicle's path, and then only if it predicts the time gap will be breached.

The adaptive speed control system only intervenes with the set speed:

If the adaptive speed control system detects a slower target vehicle in the host vehicle's path
If the calculated time gap will be breached.

The PCM and fuel injection control are unchanged from those used for the standard speed control system.

With the ignition ON (ignition mode 6), the ASCM is powered up but no radar transmissions are emitted until the vehicle is in motion.