DYNAMIC RADAR CRUISE CONTROL SYSTEM GENERAL

OUTLINE

The dynamic radar cruise control system has 2 cruise control modes: Constant Speed Control Mode, and Vehicle-to-Vehicle Distance Control Mode.

The cruise control switch is used for switching between the 2 modes.

The mode in which the cruise control system starts is the vehicle-to-vehicle distance control mode.

Mode	Outline
Constant Speed Control Mode	The constant speed control mode is the same as a conventional cruise control system. However, differences are as follows: Set speed: 40 km/h (25 mph) → 50 km/h (30 mph)
Vehicle-to-Vehicle Distance Control Mode	In the vehicle-to-vehicle distance control mode, the system recognizes and determines the lane in which the driver's own vehicle and the vehicle ahead are traveling. Thus, the system is able to maintain the proper vehicle-to-vehicle distance in accordance with the vehicle speed, and allows the vehicle to be driven under follow-up control. The driver can operate the distance control switch on the steering wheel to select the vehicle-to-vehicle distance in three stages: long, middle, and short. This mode consists mainly of 4 controls: constant speed control, deceleration control, follow-up control, and acceleration control. The illustrations below show control examples while the driver's own vehicle is driving at 100 km/h (62 mph), and the vehicle ahead is driving at 80 km/h (50 mph). Throttle control and brake control achieve smooth deceleration

Mode

Outline

Constant Speed Control Mode

The constant speed control mode is the same as a conventional cruise control system. However, differences are as follows:

Set speed: 40 km/h (25 mph) → 50 km/h (30 mph)

Vehicle-to-Vehicle Distance Control Mode

In the vehicle-to-vehicle distance control mode, the system recognizes and determines the lane in which the driver's own vehicle and the vehicle ahead are traveling. Thus, the system is able to maintain the proper vehicle-to-vehicle distance in accordance with the vehicle speed, and allows the vehicle to be driven under follow-up control.

The driver can operate the distance control switch on the steering wheel to select the vehicle-to-vehicle distance in three stages: long, middle, and short.
This mode consists mainly of 4 controls: constant speed control, deceleration control, follow-up control, and acceleration control.
The illustrations below show control examples while the driver's own vehicle is driving at 100 km/h (62 mph), and the vehicle ahead is driving at 80 km/h (50 mph).
Throttle control and brake control achieve smooth deceleration

MAJOR DIFFERENCE
1. The new models have been modified from the previous models as shown below:
  1. The connection between the driving support ECU assembly and millimeter wave radar sensor has been changed from a direct communication to a CAN communication line.