2024 Toyota Prius Driving Assist System Guidelines
The 2024 Toyota Prius Drive Assist System is a huge step forward in car technology. It combines cutting-edge features in a way that makes driving more enjoyable. Toyota is dedicated to pushing the limits of smart mobility, and this new system is proof of that. It was created with safety and ease of use in mind. There is a complete set of rules built into the Driving Assist System that change the way drivers communicate with their cars. Using advanced sensors and machine learning, the system helps drivers in real-time by giving them advice and support in a variety of driving situations. The Prius Driving Assist System gives drivers more control and trust, whether they’re driving in the city or away from traffic on the highway. This is a big step toward a safer and more connected future for driving, and it shows how committed Toyota is to keeping on the cutting edge of automotive innovation.
Driving assist systems
To keep driving safe and perform, the following systems operate automatically in response to various driving situations. Be aware, however, that these systems are supplementary and should not be relied upon too heavily when operating the vehicle.
Summary of the driving assist systems
ECB (Electronically Controlled Brake System)
The electronically controlled system generates braking force corresponding to the brake operation
ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if the brakes are applied while driving on a slippery road surface
Brake assist
Generates an increased level of braking force after the brake pedal is depressed when the system detects a panic stop situation
VSC (Vehicle Stability Control)
Helps the driver to control skid-ding when swerving suddenly or turning on slippery road surfaces.
Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC, and EPS.
Helps to maintain directional stability when swerving on slippery road surfaces by controlling steering performance.
TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spinning when starting the vehicle or accelerating on slippery roads
Active Cornering Assist (ACA)
Helps to prevent the vehicle from drifting to the outer side by performing inner wheel brake control when attempting to accelerate while turning
Hill-start assist control
Helps to reduce the backward movement of the vehicle when starting on an uphill
EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn the steering wheel.
E-Four (Electronic On-Demand AWD system)(AWD models)
Automatically controls the drive system such as to front-wheel drive or AWD (all-wheel drive) according to various running conditions including normal driving, during cornering, on an uphill, when starting, during acceleration, on a slippery road due to snow or rain, thus contributing to stable operability and driving stability.
The Secondary Collision Brake
When the SRS airbag sensor detects a collision and the system operates, the brakes and brake lights are automatically controlled to reduce the vehicle speed and help reduce the possibility of further damage due to a secondary collision.
When the TRAC/VSC/ABS systems are operating
The slip indicator light will flash while the TRAC/VSC/ABS systems are operating.
Disabling the TRAC system
If the vehicle gets stuck in the mud, dirt, or snow, the TRAC system may reduce power from the hybrid system to the wheels. Pressing to turn the system off may make it easier for you to rock the vehicle to free it. To turn the TRAC system off, quickly press and release .
The “Traction Control Turned OFF” will be shown on the multi-information display.
Turning off both TRAC and VSC systems
To turn the TRAC and VSC systems off, press and hold for more than 3 seconds while the vehicle is stopped. The VSC OFF indicator light will come on and the “Traction Control Turned OFF” will be shown on the multi-information display.*
PCS (Pre-Collision System) will also be disabled (only pre-collision warning is available). The PCS warning light will come on and a message will be displayed on the multi-information display.
When the message is displayed on the multi-information display it shows that TRAC has been disabled even if has not been pressed
TRAC is temporarily deactivated. If the information continues to show, contact your Toyota dealer.
Operating conditions of hill-start assist control
When all of the following conditions are met, the hill-start assist control will operate:
- The shift position is in a position other than P or N (when starting forward/backwards on an upward incline)
- The vehicle is stopped
- The accelerator pedal is not depressed
- The parking brake is not engaged
- The power switch is ON
Automatic system cancellation of hill-start assist control
The hill-start assist control will turn off in any of the following situations:
- Shift the shift position to P or N.
- The accelerator pedal is depressed
- The brake pedal is depressed and the parking brake is engaged
- A maximum of 2 seconds have elapsed after the brake pedal is released
- The power switch is turned OFF
Sounds and vibrations caused by the ABS, brake assist, VSC, TRAC, and hill-start assist control systems
- A sound may be heard from the engine compartment when the brake pedal is depressed repeatedly, when the hybrid system is started, or just after the vehicle begins to move. This sound does not indicate that a malfunction has occurred in any of these systems.
- Any of the following conditions may occur when the above systems are operating. None of these indicates that a malfunction has occurred.
- Vibrations may be felt through the vehicle body and steering.
- A motor sound may be heard also after the vehicle comes to a stop.
ECB operating sound
ECB operating sound may be heard in the following cases, but it does not indicate that a malfunction has occurred.
- Operating sound is heard from the engine compartment when the brake pedal is operated.
- The operating sound was heard from the engine compartment when one or two minutes passed after the stop of the hybrid system.
Active Cornering Assist operation sounds and vibrations
When the Active Cornering Assist is operated, operation sounds and vibrations may be generated from the brake system, but this is not a malfunction.
Automatic reactivation of TRAC and VSC systems
After turning the TRAC and VSC systems off, the systems will be automatically re-enabled in the following situations:
- When the power switch is turned off
- If only the TRAC system is turned off, the TRAC will turn on when vehicle speed increases
If both the TRAC and VSC systems are turned off, automatic re-enabling will not occur when vehicle speed increases.
Operating conditions of Active Cornering Assist
The system operates when the following occurs.
- TRAC/VSC can operate
- The driver is attempting to accelerate while turning
- The system detects that the vehicle is drifting to the outer side
- The brake pedal is released
Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheating when there is frequent steering input over an extended period. The steering wheel may feel heavy as a result. Should this occur, refrain from excessive steering input or stop the vehicle and turn the hybrid system off. The EPS system should return to normal within 10 minutes.
Secondary Collision Brake operating conditions
The system operates when the SRS airbag sensor detects a collision while the vehicle is in motion. However, the system does not operate when the components are damaged.
Secondary Collision Brake automatic cancellation
The system is automatically canceled in any of the following situations.
- The vehicle speed drops to approximately 0 mph (0 km/h).
- A certain amount of time elapses during the operation
- The accelerator pedal is depressed a large amount
If a message about AWD is shown on the multi-information display (AWD models)
Perform the following actions.
- “AWD System Overheated Switching to 2WD Mode”
AWD system is overheated. Stop the vehicle in a safe place with the hybrid system operating.*
If the message disappears after a while, there is no problem. If the message remains, have the vehicle inspected by your Toyota dealer immediately. - “AWD System Overheated 2WD Mode Engaged”
AWD system has been temporarily released and switched to front-wheel drive due to overheating. Stop the vehicle in a safe place with
the hybrid system operating.*
If the message disappears after a while, the AWD system will automatically recover. If the message remains, have the vehicle inspected by your Toyota dealer immediately. - “AWD System Malfunction 2WD Mode Engaged Visit Your Dealer”
A malfunction occurs in the AWD system. Have the vehicle inspected by your Toyota dealer immediately.
*: When stopping the vehicle, do not stop the hybrid system until the display message has turned off.
WARNING
The ABS does not operate effectively when
- The limits of tire-gripping performance have been exceeded (such as excessively worn tires on a snow-covered road).
- The vehicle hydroplanes while driving at high speed on wet or slick roads.
Stopping distance when the ABS is operating may exceed that of normal conditions
The ABS is not designed to shorten the vehicle’s stopping distance. Always maintain a safe distance from the vehicle in front of you, especially in the following situations:
- When driving on dirt, gravel, or snow-covered roads
- When driving with tire chains
- When driving over bumps in the road
- When driving over roads with potholes or uneven surfaces
TRAC/VSC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road surfaces, even if the TRAC/VSC system is operating. Drive the vehicle carefully in con-ditions where stability and power may be lost.
Active Cornering Assist does not operate effectively when
- Do not overly rely on Active Cornering Assist. Active Corner-ing Assist may not operate effectively when accelerating down slopes or driving on slippery road surfaces.
- When Active Cornering Assist frequently operates, Active Cornering Assist may temporarily stop operating to ensure proper operation of the brakes, TRAC, and VSC.
Hill-start assist control does not operate effectively when
- Do not overly rely on hill-start assist control. Hill-start assist control may not operate effectively on steep inclines and roads covered with ice.
- Unlike the parking brake, hill-start assist control is not intended to hold the vehicle stationary for an extended period. Do not attempt to use hill-start assist control to hold the vehicle on an incline, as doing so may lead to an accident.
When the TRAC/ABS/VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may cause an accident. Exercise particular care when the indicator light flashes.
When the TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions. As these are the systems to help ensure vehicle stability and driving force, do not turn the TRAC/VSC systems off unless necessary.
Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern, and total load capacity. In addition, make sure that the tires are inflated to the recommended tire inflation pressure level.
The ABS, TRAC, and VSC systems will not function correctly if different tires are installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires or wheels.
WARNING
Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect the driving assist systems, and may cause a system to malfunction.
Secondary Collision Brake
Do not rely solely upon the Secondary Collision Brake. This system is designed to help reduce the possibility of further damage due to a secondary collision, however, that effect changes according to various conditions. Overly relying on the system may result in death or serious injury.
FAQs
The 2024 Toyota Prius comes equipped with an advanced driving assist system.
The driving assist system includes features such as adaptive cruise control, lane departure warning, automatic emergency braking, and more.
The adaptive cruise control in the Prius adjusts the vehicle’s speed based on the traffic flow, maintaining a safe following distance from the car ahead.
Yes, the 2024 Prius is equipped with a lane departure warning system that alerts the driver if the vehicle unintentionally drifts out of its lane.
Yes, the system has automatic emergency braking, which can intervene to apply the brakes in emergencies to prevent or mitigate a collision.
The Prius may come with improved parking assistance features, including advanced sensors and possibly automated parking capabilities.
The system likely includes a traffic jam assist function, allowing for semi-autonomous driving in slow-moving traffic.
Yes, the Prius may offer customizable settings, allowing drivers to adjust the sensitivity of various driving assist features according to their preferences.
Yes, the Prius may include a blind-spot monitoring system to help drivers be aware of vehicles in their blind spots.
The system is designed to detect obstacles and may engage collision avoidance mechanisms, such as emergency braking or steering assist, to avoid or minimize impact.
The Prius may include driver monitoring features, such as attention monitoring, to alert the driver if signs of drowsiness or distraction are detected.
Yes, the driver typically can override the driving assist system at any time.
Yes, the Prius may feature automatic lane-keeping assistance to help keep the vehicle centered within its lane.
The system likely includes cross-traffic alert features to warn the driver of approaching traffic from the side, such as when backing out of parking spaces.
Depending on the technology available, the Prius may support over-the-air updates to improve or add new features to the driving assist system.
Useful Link:
View Full PDF: 2024 Toyota Prius User Manual | Auto User Guide