Toyota Tundra Owners Manual: Dynamic radar cruise control

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.

  • Vehicle-to-vehicle distance control mode
  • Constant speed control mode
  1. Vehicle-to-vehicle distance switch
  2. Display
  3. Indicators
  4. Set speed
  5. Cruise control switch

Using the driving support systems

WARNING

■Before using dynamic radar cruise control Driving safely is the sole responsibility of the driver. Do not rely solely on the system, and drive safely by always paying careful attention to your surroundings.

The dynamic radar cruise control provides driving assistance to reduce the driver's burden. However, there are limitations to the assistance provided.

Set the speed appropriately depending on the speed limit, traffic flow, road conditions, weather conditions, etc. The driver is responsible for checking the set speed.

Even when the system is functioning normally, the condition of the preceding vehicle as detected by the system may differ from the condition observed by the driver. Therefore, the driver must always remain alert, assess the danger of each situation and drive safely. Relying on this system or assuming the system ensures safety while driving can lead to an accident, resulting in death or serious injury.

Cautions regarding the driving assist systems Observe the following precautions, as there are limitations to the assistance provided by the system.

Failure to do so may cause an accident resulting in death or serious injury.

  • Assisting the driver to measure following distance
    The dynamic radar cruise control is only intended to help the driver in determining the following distance between the driver's own vehicle and a designated vehicle traveling ahead. It is not a mechanism that allows careless or inattentive driving, and it is not a system that can assist the driver in low-visibility conditions. It is still necessary for driver to pay close attention to the vehicle's surroundings.
  • Assisting the driver to judge proper following distance
    The dynamic radar cruise control determines whether the following distance between the driver's own vehicle and a designated vehicle traveling ahead is within a set range. It is not capable of making any other type of judgement. Therefore, it is absolutely necessary for the driver to remain vigilant and to determine whether or not there is a possibility of danger in any given situation.
  • Assisting the driver to operate the vehicle
    The dynamic radar cruise control has limited capability to prevent or avoid a collision with a vehicle traveling ahead. Therefore, if there is ever any danger, the driver must take immediate and direct control of the vehicle and act appropriately in order to ensure the safety of all involved.

 

WARNING

■To avoid inadvertent dynamic radar cruise control activation Switch the dynamic radar cruise control off using the "ON-OFF" button when not in use.

■Situations unsuitable for dynamic radar cruise control Do not use dynamic radar cruise control in any of the following situations.

Doing so may result in inappropriate speed control and could cause an accident resulting in death or serious injury.

  • Roads where there are pedestrians, cyclists, etc.
  • In heavy traffic
  • On roads with sharp bends
  • On winding roads
  • On slippery roads, such as those covered with rain, ice or snow
  • On steep downhills, or where there are sudden changes between sharp up and down gradients
    Vehicle speed may exceed the set speed when driving down a steep hill.
  • At entrances to freeways and highways
  • When weather conditions are bad enough that they may prevent the sensors from detecting correctly (fog, snow, sandstorm, heavy rain, etc.)
  • When there is rain, snow, etc., on the front surface of the radar sensor or camera sensor
  • In traffic conditions that require frequent repeated acceleration and deceleration
  • When your vehicle is towing a trailer or during emergency towing
  • When an approach warning buzzer is heard often

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.

Using the driving support systems

  1. Example of constant speed cruising
    When there are no vehicles ahead
    The vehicle travels at the speed set by the driver. The desired vehicle-to-vehicle distance can also be set by operating the vehicle-to-vehicle distance switch.
  2. Example of deceleration cruising and follow-up cruising
    When a preceding vehicle driving slower than the set speed appears
    When a vehicle is detected running ahead of you, the system automatically decelerates your vehicle. When a greater reduction in vehicle speed is necessary, the system applies the brakes (the stop lights will come on at this time). The system will respond to changes in the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the driver.

    Approach warning warns you when the system cannot decelerate sufficiently to prevent your vehicle from closing in on the vehicle ahead.

  3. Example of acceleration
    When there are no longer any preceding vehicles driving slower than the set speed
    The system accelerates until the set speed is reached. The system then returns to constant speed cruising.

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.

Using the driving support systems

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.

Using the driving support systems

Adjusting the set speed

To change the set speed, operate the lever until the desired set speed is displayed.

  1. Increases the speed
  2. Decreases the speed

Using the driving support systems

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"
*2: When the set speed is shown in "km/h"

Changing the vehicle-to-vehicle distance (vehicle-to-vehicle distance control mode)

Pressing the switch changes the vehicle-to-vehicle distance as follows:

  1. Long
  2. Medium
  3. Short

Using the driving support systems

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.

Using the driving support systems

Canceling and resuming the speed control

  1. Pulling the lever toward you cancels the speed control.

    The speed control is also canceled when the brake pedal is depressed.

  2. Pushing the lever up resumes the cruise control and returns vehicle speed to the set speed.

    However, cruise control does not resume when the vehicle speed is approximately 25 mph (40 km/h) or less.

Using the driving support systems

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.

Using the driving support systems

■ Warnings may not occur when In the following instances, warnings may not occur even when the vehicle-to-vehicle distance is small.

  • When the speed of the preceding vehicle matches or exceeds your vehicle speed
  • When the preceding vehicle is traveling at an extremely slow speed
  • Immediately after the cruise control speed was set
  • When depressing the accelerator pedal

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.

Using the driving support systems

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.

Using the driving support systems

■Dynamic radar cruise control can be set when

  • The shift lever is in D or range 4 or higher of S has been selected.
  • Vehicle speed is at or above approximately 30 mph (50 km/h).

■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:

  • Actual vehicle speed falls at or below approximately 25 mph (40 km/h).
  • VSC is activated.
  • TRAC is activated for a period of time.
  • When the VSC or TRAC system is turned off.
  • The sensor cannot detect correctly because it is covered in some way.
  • Pre-collision braking is activated.

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:

  • Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set vehicle speed.
  • Actual vehicle speed falls below approximately 25 mph (40 km/h).
  • VSC is activated.
  • TRAC is activated for a period of time.
  • When the VSC or TRAC system is turned off.
  • Pre-collision braking is activated.

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.

  • Vehicles that cut in suddenly
  • Vehicles traveling at low speeds
  • Vehicles that are not moving in the same lane
  • Vehicles with small rear ends (trailers with no load on board, etc.)

Using the driving support systems

  • Motorcycles traveling in the same lane
  • When water or snow thrown up by the surrounding vehicles hinders the detecting of the sensor
  • When your vehicle is pointing upwards (caused by a heavy load in the luggage compartment, etc.)

Using the driving support systems

  • Preceding vehicle has an extremely high ground clearance

Using the driving support systems

■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.

  • When the road curves or when the lanes are narrow

Using the driving support systems

  • When steering wheel operation or your position in the lane is unstable

Using the driving support systems

  • When the vehicle ahead of you decelerates suddenly
  • When driving on a road surrounded by a structure, such as in a tunnel or on a bridge
  • While the vehicle speed is decreasing to the set speed after the vehicle accelerates by depressing the accelerator pedal
    LDA (Lane Departure Alert)

    Cruise control

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