See the vehicle’s Owner’s Manual for a description of the advanced features and their limitations.

Limitations of the Pre-Collision System (PCS)

• The driver is solely responsible for safe driving. Always drive safely, taking care to observe your surroundings. Do not use the Pre-Collision System instead of normal braking operations under any circumstances. This system will not prevent collisions or lessen damage or injuries in every situation. Do not overly rely on this system. Failure to do so may lead to an accident, resulting in death or serious injury.
• Although this system is designed to help avoid and reduce the impact of a collision, its effectiveness may change according to various conditions; therefore the system may not always be able to achieve the same level of performance. Additionally, the Pre-Collision braking function may activate if certain road or driving conditions are met.

Pre-Collision braking

• The Pre-Collision braking function may not operate if certain operations are performed by the driver. If the accelerator pedal is being depressed strongly or the steering wheel is being turned, the system may determine that the driver is taking evasive action and possibly prevent the Pre-Collision braking function from operating.
• In some situations, while the Pre-Collision braking function is operating, operation of the function may be canceled if the accelerator pedal is depressed strongly or the steering wheel is turned and the system determines that the driver is taking evasive action.
• A large amount of braking force is applied while the Pre-Collision braking function is operating. Additionally, as the vehicle may creep after the Pre-Collision braking function has operated, the driver should depress the brake pedal as necessary.

Pedestrian detection

The pedestrian detection portion of any applicable Pre-Collision System is designed to help detect pedestrians. Based on the size, profile and motion of a detected object, the radar sensor and camera sensor detect pedestrians in order to operate the system.

However, pedestrians may not be detected in situations such as the following examples, preventing the system from operating properly including the following:

• When the silhouette of a pedestrian is obscure
• When a pedestrian is in a place where the surrounding brightness changes suddenly

To avoid malfunction or improper operation of the system

In the following situations, it is necessary to disable the Pre-Collision System. The system may operate even if there is no possibility of a collision, or may not operate properly.

• When the vehicle is being towed
• When your vehicle is towing another vehicle
• When transporting the vehicle via truck, boat, train or similar means of transportation
• When the vehicle is raised on a lift with the engine switch on and the tires are allowed to rotate freely
• When inspecting the vehicle using a drum tester such as a chassis dynamometer or speedometer tester, or when using an on-vehicle wheel balancer
• When driving through or under objects that may contact the vehicle, such as thick grass, tree branches or a banner
• When a strong impact is applied to the front bumper or front grille, due to an accident or other reasons
• When the vehicle is driven in a unsafe manner

In the following situations, it is advised to disable the Pre-Collision System. Otherwise, the system may not operate properly, possibly leading to an accident.

• When the tires are not properly inflated
• When worn tires or tires of different wear levels are installed
• When tires of a size other than specified are installed
• When a compact spare tire or tire chains are installed
• When an emergency tire puncture repair kit is used
• If the suspension is modified
• When the camera sensor is obstructed (for example, if a canoe is mounted on the roof)
• When a grille guard, kangaroo bar or other equipment that may hamper the detection ability of the sensor is installed
• If the vehicle cannot be driven in a stable manner, such as when the vehicle has been in an accident or is malfunctioning
• If the front of the vehicle is raised or lowered (for example, when heavy luggage is loaded)
• If the brake system warning light is illuminated

In the following situations, the system may not operate correctly, possibly leading to an accident resulting in death or serious injury.

• If the headlights are dirty or snow or ice is attached to the headlights
• If the headlight aiming is misaligned
• If the headlights or other front lights have been modified
• If an accessory that protrudes beyond the front of the front bumper or luggage that protrudes beyond the front of the front bumper is loaded

Before using Lane Departure Alert (LDA) with Steering Assist system

• Do not rely solely upon the Lane Departure Alert (LDA) with Steering Assist system. Lane Departure Alert (LDA) with Steering Assist is not a system which automatically drives the vehicle or reduces the amount of attention that must be paid to the area in front of the vehicle. The driver must always assume full responsibility for driving safely by paying careful attention to the surrounding conditions and operating the steering wheel to correct the path of the vehicle. Also, make sure to take adequate breaks when fatigued, such as from driving for a long period of time.
• Failure to perform appropriate driving operations and pay careful attention may lead to an accident.

To avoid operating Lane Departure Alert (LDA) with Steering Assist by mistake

• When not using the Lane Departure Alert (LDA) with Steering Assist system, use the Lane Departure Alert (LDA) with Steering Assist switch to turn the system off.

Situations unsuitable for Lane Departure Alert (LDA) with Steering Assist

Do not use the Lane Departure Alert (LDA) with Steering Assist system in the following situations. The system may not operate properly and lead to an accident.

• A spare tire, tire chains, etc., are equipped.
• Tires which differ by structure, manufacturer, brand or tread pattern are used.
• Objects or patterns that could be mistaken for white (or yellow) lines are present on the side of the road (guardrails, curbs and reflective poles).
• Vehicle is driven on a snow-covered road.
• White (or yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
• Asphalt repair marks, white (or yellow) line marks, etc., are present due to road repair.
• Vehicle is driven in a temporary lane or restricted lane due to construction work.
• Vehicle is driven on a road surface which is slippery due to rainy weather, fallen snow, freezing, etc.
• Vehicle is driven in traffic lanes other than on highways and freeways.
• Vehicle is driven in a construction zone.
• Vehicle is towing a trailer or another vehicle.

Preventing Lane Departure Alert (LDA) with Steering Assist system malfunctions and operations performed by mistake

• Do not modify the headlights or attach stickers, etc., on the surface of the lights.
• Do not modify the suspension or use parts other than genuine replacement parts.
• Do not install or place anything on the hood or grille. Also, do not install a grille guard (bull bars, kangaroo bar, etc.).

Before using Dynamic Radar Cruise Control with High-Speed range

Do not overly rely on vehicle-to-vehicle distance control mode. 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.

• Assisting the driver to measure following distance.
  • The Dynamic Radar Cruise Control with High-Speed range 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 the driver to pay close attention to the vehicle’s surroundings.
• Assisting the driver to judge proper following distance.
  • The Dynamic Radar Cruise Control with High-Speed range determines whether the following distance 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 judgment. 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 with High-Speed range 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 Dynamic Radar Cruise Control with High-Speed range activation

• When not in use, switch the Dynamic Radar Cruise Control with High-Speed range off using the “ON/OFF” button.

Situations unsuitable for Dynamic Radar Cruise Control with High-Speed range

Do not use Dynamic Radar Cruise Control with High-Speed range 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 downhill’s, 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

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 will not be activated, which may lead to an accident resulting in death or serious injury.

• 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.)
• Motorcycles traveling in the same lane
• When water or snow displaced 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.)
• Preceding vehicle has an extremely high ground clearance

Conditions under which the vehicle-to-vehicle distance control mode may not function correctly

Operate the brake pedal (or accelerator pedal operation depending on the situation) as necessary in the following conditions as the sensor may not be able to correctly detect vehicles ahead, which may lead to an accident resulting in death or serious injury.

• When the road curves or when the lanes are narrow
• When steering wheel operation or your position in the lane is unstable
• When the vehicle ahead of you decelerates suddenly

Limitations of the Intelligent High-Beam (IHB)

Do not rely on the Intelligent High-Beam. Always drive safely, taking care to observe your surroundings and turning High-Beam on or off manually if necessary.

Notes when using the Intelligent High-Beam system

Observe the following to ensure that the Intelligent High-Beam functions correctly.

• Do not touch the camera sensor.
• Do not subject the camera sensor to a strong impact.
• Do not disassemble the camera sensor.
• Do not spill liquid onto the camera sensor.
• Do not apply window tinting or stickers to the camera sensor or the area of windshield near the camera sensor.
• Do not place items on the dashboard. There is a possibility that the camera sensor will mistake items reflected in the windshield for streetlights, the headlights of other vehicles, etc.
• Do not install a parking tag or any other accessories near or around the camera sensor.
• Do not overload the vehicle.
• Do not modify the vehicle.
• Do not replace the windshield with a non-genuine windshield. Contact your Lexus dealer.
• Do not replace headlights with non-genuine headlights. Contact your Lexus dealer.