Dynamic Radar Cruise Control

System Outline

1. Setting

When the - SET SW is operated with the ON-OFF SW ON (The cruise operation indicator is lit) at a vehicle speed above the lower set table vehicle speed limit, the vehicle speed at which the - SET SW is turned OFF is stored as the set vehicle speed and the vehicle is controlled to maintain that speed. However, when the - SET SW is operated at a speed that exceeds the higher set table vehicle speed limit, the higher set table vehicle speed limit is stored as the set vehicle speed and the vehicle is controlled to maintain that speed.

When the - SET SW is operated with the ON-OFF SW ON (The cruise operation indicator is lit), when the vehicle is traveling at between the lower set table vehicle speed limit and the high speed limit, the vehicle speed at which the - SET SW is turned OFF is stored as the set vehicle speed and the vehicle is controlled to maintain that speed.

2. Method for Changing Set Vehicle Speed

1. Lowering the set vehicle speed
When the - SET SW is momentarily operated (For approximately 0.6 seconds), during cruise control driving, the set vehicle speed decreases in increments of 5 mph for U.S.A. models and 5 km/h for other models for each SW operation. When the - SET SW is held ON, the set vehicle speed decreases continuously in increments of 5 mph for U.S.A. models and 5 km/h for other models until the SW is turned OFF.

However, if the set vehicle speed reaches the lower set table vehicle speed limit, the set vehicle speed cannot be decreased any further.

When the set vehicle speed is changed, the vehicle decelerates (or may accelerate) to that speed.

NOTE: The actual vehicle speed is not set if the - SET SW is operated and turned OFF after the vehicle is accelerated by using the accelerator pedal. In such cases, the set vehicle speed decreases by 5 mph for U.S.A. models and 5 km/h for other models, as described above.

2. Raising the set vehicle speed
- When the + RES SW is momentarily operated (For approximately 0.6 seconds), the set vehicle speed increases in increments of 5 mph for U.S.A. models and 5 km/h for other models for each SW operation.

When the SW is held ON, the set vehicle speed increases continuously in increments of 5 mph for U.S.A. models and 5 km/h for other models until the SW is turned off.

However, if the set vehicle speed reaches the higher set table vehicle speed limit, the set vehicle speed cannot be increased any further.

When the set vehicle speed is changed, the vehicle accelerates (or may decelerate) to that speed.

- When the + RES SW is turned ON during follow-up control, the vehicle speed does not increase and the follow-up control continues. However, the set vehicle speed is changed.

1. Deceleration
- When the - SET SW is turned ON during cruise control driving, the vehicle decelerates. When the SW is turned OFF, the actual vehicle speed is stored as the set vehicle speed and the vehicle is controlled to maintain that speed. If the - SET SW is turned from ON to OFF when the actual vehicle speed exceeds the high speed limit while the vehicle runs down a slope; the vehicle is controlled using the high speed limit as the set vehicle speed.
- When the - SET SW is momentarily operated (For approximately 0.6 seconds), the set vehicle speed decreases in increments of 1.6 km/h (1 mph) for each SW operation. However, if the SW is operated when the set vehicle speed differs from the actual vehicle speed by 5 km/h (3 mph) more the actual vehicle speed at which the SW is turned OFF is stored in the memory and the vehicle is controlled to maintain that speed.

2. Acceleration
- When the + RES SW is turned ON during cruise control driving, the vehicle accelerates while the SW is ON. When the SW is turned OFF, the vehicle speed is stored as the set vehicle speed and the vehicle is controlled to maintain that speed.

When the actual vehicle speed exceeds the high speed limit during the + RES SW operation, the vehicle is controlled using the high speed limit until the SW operation ends. After the SW operation, the high speed limit is stored as the set vehicle speed and the vehicle is controlled to maintain that speed.

- When the + RES SW is operated momentarily (For approximately 0.6 seconds), the set vehicle speed increases in increments of 1.6 km/h (1 mph) for each SW operation. However, if the SW is operated when the set vehicle speed differs from the actual vehicle speed by 5 km/h (3 mph) more the set speed is not changed.
- When the - SET SW is operated after vehicle acceleration using the accelerator pedal, the set vehicle speed is reset to the vehicle speed at which the - SET SW is turned OFF. However, the SW operation has no effect when the actual vehicle speed is higher than the high speed limit.

3. Lower set table Vehicle Speed Limit
- This refers to the lower limit of the set table speed range and is approximately 45 km/h (27 mph). It is different from the low limit speed.
- No set vehicle speed is stored in the memory when the vehicle runs below the lower set table vehicle speed limit.

4. Low Speed Limit
This refers to the lower limit of the operating speed range and is approximately 40 km/h (25 mph). When the vehicle speed decreases to below 40 km/h (25 mph) during cruise control driving, the cruise control is automatically canceled. However, vehicle-to-vehicle distance control mode and constant speed control mode retain the set vehicle speed stored in the memory.

5. Higher set table Vehicle Speed Limit (Only in Vehicle-to-Vehicle Distance Control Mode)
This refers to the upper limit of the set table speed range in vehicle to vehicle distance control mode and is approximately 135 km (85 mph).

6. High Speed Limit (Only in Constant Speed Control Mode)
This refers to the upper limit of the set table speed range in constant speed control mode and is approximately 200 km/h (125 mph).

7. Resume
- If the cruise control is canceled during cruise control driving, and the + RES SW is turned ON while the actual vehicle speed is higher than the low speed limit, the vehicle speed control automatically resumes to maintain the vehicle speed that was stored before the cruise control was canceled.
- Under follow-up control, when the driver or the vehicle ahead changes lanes and the road ahead becomes clear, the vehicle accelerates automatically and gradually to the set vehicle speed. When the + RES SW is turned ON at this time, the vehicle speed is rapidly increased (Only in vehicle-to-vehicle distance control mode).

8. Shift-Down Control
When the vehicle climbs a hill while running under cruise control, the gear may be shifted down by the A/T control. When the hill climb is judged to have finished, based on the throttle opening information, the gear is shifted up after a set time.

9. Cancel
Cruise control is canceled if any of the following signals are input during cruise control driving (Set vehicle speed is not erased).

1. Stop lamp SW ON (Brake pedal depressed)
2. D position circuit in neutral start SW from ON to OFF*
*Shift lever moved from D to N
*Gear changes to 3, 2, or 1 in sequential shift mode (Shift lever in S)

3. CANCEL SW of CONTROL SW ON
4. ON-OFF SW OFF (Set vehicle speed erased)
5. VSC activation