Adaptive Speed Control - Malfunction Warnings

If a malfunction occurs during operation of the system in adaptive speed control or follow modes, the adaptive speed control system will switch off and cannot be used until the fault is cleared. The message 'Driver Intervene' appears briefly and is then replaced by the message 'Cruise Not Available'. If a malfunction of the adaptive speed control, or any related system occurs at any other time, the message 'Cruise Not Available' will be displayed. It will not be possible to activate the adaptive speed control system in any mode.

Accumulations of dirt, snow or ice on the radar sensor or cover may inhibit adaptive speed control operation. Fitting of a vehicle front protector or metallized badges may also affect adaptive speed control operation. The adaptive speed control system relies on its radar to detect objects and constantly scans ahead.. If the radar detects no stationary targets at the side of the road and a low signal reflection from the road surface, then the adaptive speed control (if engaged) will be de-activated, the audible alarm sounds and the message 'Driver Intervene' displays briefly. The message 'ACC Sensor Blocked' follows the previous message. The same messages may also be displayed while driving on open roads with few objects for the radar to detect. Clearing the obstruction allows the system to return to normal operation. If the obstruction is present when adaptive speed control is inactive (e.g. on initial starting or with the system switched off), the message 'ACC Sensor Blocked' will be displayed.