Dynamic radar cruise control

Dynamic radar cruise control supplements conventional cruise control with a vehicle-to-vehicle distance control. In vehicle-to-vehicle dis- tance control mode, the vehicle automatically accelerates or deceler- ates in order to maintain a set following distance from vehicles ahead.

1 Display

1 Display
2 Set speed
3 Indicators
4 Vehicle-to-vehicle distance button
5 Cruise control switc

- Setting the vehicle speed (vehicle-to-vehicle distance control mode)

Press the “ON-OFF” button

Press the “ON-OFF” button to activate the cruise control.

Dynamic radar cruise control indicator will come on.

Press the button again to deactivate the cruise control.

Accelerate or decelerate the

Accelerate or decelerate the vehicle to the desired speed, and push the lever down to set the speed.

“SET” indicator will come on.

The vehicle speed at the moment the lever is released

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

1 Increases the speed

1 Increases the speed
2 Decreases the speed

Fine adjustment: Momen- tarily move the lever in the desired direction.

Large adjustment: Hold the lever in the desired direction.

In the vehicle-to-vehicle distance control mode, the set speed will be increased or decreased as follows: • When the set speed is shown in “MPH”
Fine adjustment: By approximately 5 mph (8 km/h) each time the lever is operated
Large adjustment: By approximately 5 mph (8 km/h) for each 0.75 seconds the lever is held
• When the set speed is shown in “km/h”
Fine adjustment: By approximately 3.1 mph (5 km/h) each time the lever is operated
Large adjustment: By approximately 3.1 mph (5 km/h) for each 0.75 seconds the lever is held
In the constant speed control mode , the set speed will be increased or decreased as follows:
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is operated
Large adjustment: The set speed can be increased or decreased continually until the lever is released

- Changing the vehicle-to-vehicle distance

Pressing the button changes

Pressing the button changes the vehicle-to-vehicle dis- tance as follows:

1 Long
2 Medium
3 Short

The vehicle-to-vehicle dis- tance is set automatically to long mode when the “ENGINE START STOP” switch is turned to IGNI- TION ON mode.

If a vehicle is running ahead of you, the preceding vehicle mark will also be displayed.

- Vehicle-to-vehicle distance settings
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

- Canceling and resuming the speed control

1 Pulling the lever toward

1 Pulling the lever toward you cancels the cruise con- trol.

The speed setting is also can- celed when the brakes are applied.

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

Resuming is available when the vehicle speed is more than

Driving in vehicle-to-vehicle distance control mode

This mode employs a radar sensor to detect the presence of vehi- cles up to approximately 400 ft. (120 m) ahead, determines the cur- rent 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.

1 Example of constant speed cruising

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 control.

2 Example of deceleration cruising
When the vehicle ahead is driving slower than the set speed
When a vehicle is detected running ahead of you, the system automat- ically decelerates your vehicle. When a greater reduction in vehicle speed is necessary, the system applies the brakes. A warning tone warns you when the system cannot decelerate sufficiently to prevent your vehicle from closing in on the vehicle ahead.

3 Example of follow-up cruising
When following a vehicle driving slower than the set speed
The system continues follow-up cruising while adjusting for changes in the speed of the vehicle ahead in order to maintain the vehicle-to- vehicle distance set by the driver.

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

Approach warning

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. Apply the brakes to ensure appropriate vehicle-to-vehicle distance.

- Warnings may not occur when
In the following instances, there is a possibility that the warn- ings will not occur: l When the speed of the vehicle ahead matches or exceeds your vehicle speed
l When the vehicle ahead is traveling at an extremely slow speed
l Immediately after the cruise control speed was set
l At the instant the accelerator is applied

Selecting conventional constant speed control mode

Constant speed control mode differs from vehicle-to-vehicle dis- tance control mode. When constant speed control mode is selected, your vehicle will maintain a set speed regardless of whether or not there are other vehicles in the lane ahead.

1 Press the “ON-OFF” button to activate the cruise control.

1 Press the “ON-OFF” button to activate the cruise control.

Press the button again to deactivate the cruise control.

2 Switch to constant speed control mode. (Push the lever forward and hold for approximately one second.) Cruise control indicator will come on.

When in constant speed control mode, to return to vehicle-to-vehicle distance control mode, push the lever forward again and hold for approximately 1 second.

After the desired speed has been set, it is not possible to return to vehi- cle-to-vehicle distance control mode.

If the “ENGINE START STOP” switch is turned off and then turned to IGNITION ON mode again, the vehicle will automatically return to vehicle-to-vehicle distance control mode.

Adjusting the speed setting: Canceling and resuming the speed setting:

- Dynamic radar cruise can be set when
l The shift lever is in “D” or range “4” or higher of “S” has been selected.
l Vehicle speed is above approximately 30 mph (50 km/h).

- Accelerating after setting the vehicle speed
The vehicle can accelerate normally. After acceleration, 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 vehicle ahead.

- Automatic cancelation of vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the following situations: l Actual vehicle speed falls below approximately 25 mph (40 km/h).
l VSC is activated.
l The sensor cannot operate correctly because it is covered in some way.
l The windshield wipers are operating at high speed (when the wiper switch is set to the “AUTO” mode or high speed wiper operation posi- tion).
l When second start mode is set.
l The switching operation continues for 5 seconds or more after the center differential lock switch has been operated.

If vehicle-to-vehicle distance control driving is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Lexus dealer.

- Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following situations: l Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set vehicle speed.
At this time, the memorized set speed is not retained.

l Vehicle speed falls below approximately 25 mph (40 km/h).
l VSC is activated.
l The switching operation continues for 5 seconds or more after the center differential lock switch has been operated.

- Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle-to- vehicle distance control operates properly. (Some obstructions, such as snow, ice and plastic objects, cannot be detected by the obstruction sensor.) Dynamic radar cruise control is canceled if an obstruction is detected.

1 Grille cover

1 Grille cover
2 Radar sensor

- Warning lights, messages and buzzers for dynamic radar cruise control
Warning lights, messages and buzzers are used to indicate a system mal- function or to inform the driver of the need for caution while driving.

- Certification

For vehicles sold in U.S.A.
FCC ID: HYQDNMWR005
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful inter- ference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCC WARNING
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Radiofrequency radiation exposure Information: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

This equipment should be installed and operated with minimum distance of 20 cm between the radiator (antenna) and your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, includ- ing interference that may cause undesired operation of the device.

CAUTION

- Before using dynamic radar cruise control
Do not overly rely on vehicle-to-vehicle distance control.

Be aware of the set speed. If automatic deceleration/acceleration is not appropriate, adjust the vehicle speed, as well as the distance between your vehicle and vehicles ahead by applying the brakes, etc.

- Cautions regarding the driving assist systems
Observe the following precautions.
Failure to do so may cause an accident resulting in death or serious injury.

l 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.

l Assisting the driver to judge proper following distance
The dynamic radar cruise control determines whether the following dis- tance between the driver’s own vehicle and a designated vehicle traveling ahead is appropriate or not. 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.

l Assisting the driver to operate the vehicle
The dynamic radar cruise control has no 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.

- To avoid inadvertent cruise control activation Switch the cruise control off using the “ON-OFF” button when not in use.

CAUTION

- 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 acci- dent resulting in death or serious injury.

l In heavy traffic
l On roads with sharp bends
l On winding roads
l On slippery roads, such as those covered with rain, ice or snow
l 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.

l At entrances to expressways
l When weather conditions are bad enough that they may prevent the sen- sors from functioning correctly (fog, snow, sandstorm, heavy rain etc.)
l When an approach warning buzzer is heard often
l When your vehicle is towing a trailer or during emergency towing

- When the radar sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in front of you.

As the sensor may not be able to correctly detect these types of vehicles, the approach warning alarm  will not be activated, and a fatal or seri- ous accident may result: l Vehicles that cut in suddenly
l Vehicles traveling at low speeds
l Vehicles that are not moving
l Vehicles with small rear ends (trailers with no load on board etc.)
l Motorcycles traveling in the same lane - Conditions under which the vehicle-to-vehicle distance control may not function correctly
Apply the brakes as necessary in the following conditions as the radar sen- sor may not be able to correctly detect vehicles ahead, and a fatal or serious accident may result: l When water or snow thrown up by the surrounding vehicles hinders the functioning of the sensor
l When your vehicle is pointing upwards (caused by a heavy load in the luggage compartment, etc.)
l When the road curves or when the lanes are narrow
l When steering wheel operation or your position in the lane is unstable
l When the vehicle ahead of you decelerates suddenly

CAUTION

- Handling the radar sensor
Observe the following to ensure the cruise control system can function effectively.

Otherwise, the system may not function correctly and could result in an accident.

l Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or damage them.

l Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunc- tion. If the sensor or surrounding area is subject to a strong impact, always have the area inspected and adjusted by your Lexus dealer.

l Do not disassemble the sensor.
l Do not attach accessories or stickers to the sensor, grille cover or sur- rounding area.
l Do not modify or paint the sensor and grille cover.
l Do not replace them with non-genuine parts.

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