Summary of functions In vehicle-to-vehicle distance control mode, the vehicle automatically accelerates and decelerates to match the speed changes of the preceding vehicle even if the accelerator pedal is not depressed. In constant speed control mode, the vehicle runs at a fixed speed. Use the dynamic radar cruise control with on freeways and highways.
Driving in vehicle-to-vehicle distance control mode This mode employs a radar sensor to detect the presence of vehicles up to approximately 328 ft. (100 m) ahead, determines the current vehicle-to-vehicle following distance, and operates to maintain a suitable following distance from the vehicle ahead. Note that vehicle-to-vehicle distance will close in when traveling on long downhill slopes.
Setting the vehicle speed (vehicle-to-vehicle distance control mode) 1. Press the "ON-OFF" button to activate the cruise control. Radar cruise control indicator will come on and a message will be displayed on the multi-information display. Press the button again to deactivate the cruise control. If the "ON-OFF" button is pressed and held for 1.5 seconds or more, the system turns on in constant speed control mode. 2. Accelerate or decelerate, with accelerator pedal operation, to the desired vehicle speed (at or above approximately 30 mph [50 km/h]) and push the lever down to set the speed. Cruise control "SET" indicator will come on. The vehicle speed at the moment the lever is released becomes the set speed. Adjusting the set speed To change the set speed, operate the lever until the desired set speed is displayed.
Fine adjustment: Momentarily move the lever in the desired direction. Large adjustment: Hold the lever up or down to change the speed, and release when the desired speed is reached. In the vehicle-to-vehicle distance control mode, the set speed will be increased or decreased as follows: For the U.S. mainland, Hawaii Fine adjustment: By 1 mph (1.6 km/h)*1 or 1 km/h (0.6 mph)*2 each time the lever is operated Large adjustment: Increases or decreases in 1 mph (1.6 km/h)*1 or 1 km/h (0.6 mph)*2 increments for as long as the lever is held For Canada, Guam, Saipan, Samoa and Puerto Rico Fine adjustment: By 1 mph (1.6 km/h)*1 or 1 km/h (0.6 mph)*2 each time the lever is operated Large adjustment: Increases or decreases in 5 mph (8 km/h)*1 or 5 km/h (3.1 mph)*2 increments for as long as the lever is held In the constant speed control mode , the set speed will be increased or decreased as follows: Fine adjustment: By 1 mph (1.6 km/h)*1 or 1 km/h (0.6 mph)*2 each time the lever is operated Large adjustment: The speed will continue to change while the lever is held. *1: When the set speed is shown in "MPH" Changing the vehicle-to-vehicle distance (vehicle-to-vehicle distance control mode) Pressing the switch changes the vehicle-to-vehicle distance as follows:
The vehicle-to-vehicle distance is set automatically to long mode when the engine switch is turned to the "ON" position. If a vehicle is running ahead of you, the preceding vehicle mark will also be displayed Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance control mode) Select a distance from the table below. Note that the distances shown correspond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle distance increases/decreases in accordance with vehicle speed. Canceling and resuming the speed control
Approach warning (vehicle-to-vehicle distance control mode) When your vehicle is too close to a vehicle ahead, and sufficient automatic deceleration via the cruise control is not possible, the display will flash and the buzzer will sound to alert the driver. An example of this would be if another driver cuts in front of you while you are following a vehicle. Depress the brake pedal to ensure an appropriate vehicle-to-vehicle distance. ■ Warnings may not occur when In the following instances, warnings may not occur even when the vehicle-to-vehicle distance is small.
Selecting constant speed control mode When constant speed control mode is selected, your vehicle will maintain a set speed without controlling the vehicle-to-vehicle distance. Select this mode only when vehicle-to-vehicle distance control mode does not function correctly due to a dirty radar sensor, etc. 1. With the cruise control off, press and hold the "ON-OFF" button for 1.5 seconds or more. Immediately after the "ON-OFF" button is pressed, the radar cruise control indicator will come on. Afterwards, it switches to the cruise control indicator. Switching to constant speed control mode is only possible when operating the lever with the cruise control off. 2. Accelerate or decelerate, with accelerator pedal operation, to the desired vehicle speed (at or above approximately 30 mph [50 km/h]) and push the lever down to set the speed. Cruise control "SET" indicator will come on. The vehicle speed at the moment the lever is released becomes the set speed. ■Dynamic radar cruise control can be set when
■Accelerating after setting the vehicle speed The vehicle can accelerate by operating the accelerator pedal. After accelerating, the set speed resumes. However, during vehicle-to-vehicle distance control mode, the vehicle speed may decrease below the set speed in order to maintain the distance to the preceding vehicle. ■Automatic cancelation of vehicle-to-vehicle distance control mode Vehicle-to-vehicle distance control mode is automatically canceled in the following situations:
If vehicle-to-vehicle distance control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Toyota dealer. ■Automatic cancelation of constant speed control mode Constant speed control mode is automatically canceled in the following situations:
If constant speed control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Toyota dealer. ■Brake system operation sound If the brakes are applied automatically while the vehicle is in vehicle-to-vehicle distance control mode, a brake system operation sound may be heard. This does not indicate a malfunction. ■Warning messages and buzzers for dynamic radar cruise control Warning messages and buzzers are used to indicate a system malfunction or to inform the driver of the need for caution while driving. If a warning message is shown on the multi-information display, read the message and follow the instructions. ■When the sensor may not be correctly detecting the vehicle ahead In the case of the following and depending on the conditions, operate the brake pedal when deceleration of the system is insufficient or operate the accelerator pedal when acceleration is required. As the sensor may not be able to correctly detect these types of vehicles, the approach warning may not be activated.
■Conditions under which the vehicle-to-vehicle distance control mode may not function correctly In the case of the following conditions, operate the brake pedal (or accelerator pedal, depending on the situation) as necessary. As the sensor may not be able to correctly detect vehicles ahead, the system may not operate properly.
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Toyota Tundra Service Manual > 1ur-fe Intake: Vacuum Switching Valve(for Acis)
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. REMOVE V-BANK COVER SUB-ASSEMBLY 2. INSPECT VACUUM SWITCHING VALVE ASSEMBLY (for ACIS) (a) Disconnect the vacuum switching valve connector. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Co ...