Queue Assist
When adaptive speed control is engaged, if the target vehicle comes to a halt the adaptive speed control module reduces engine speed and applies the brakes to halt the sensing vehicle and suspends speed control operation. The control module also applies the EPB if one of the following occurs:
- Adaptive speed control is disengaged with the CANCEL switch
- The vehicle is stationary for more than 2 minutes
- Driver exit is detected (assumed if the driver seatbelt is unbuckled and the driver door is opened)
- A system fault is detected.
On HEVs (hybrid electric vehicles), full use is made of regenerative braking during queue assist operation. Any additional braking effort required is produced by hydraulic application of the brakes.
When the target vehicle moves away, pressing the accelerator pedal for a minimum of 0.5 second resumes speed control operation. The sensing vehicle then follows the target vehicle in follow mode or until it stops again, or, if it can no longer detect a target, accelerates back up to the set speed.