Toyota bZ4X Owner's Manual: Using My Room Mode

When the charging cable is connected to the vehicle, electrical components such as the air conditioning system and audio system can be used by the power supply from an external power source.

Starting My Room Mode

1. Connect the charge cable to the vehicle to start charging.

AC Charging

DC Charging

2. Turn the power switch to ON while charging.

My Room Mode settings is automatically displayed on the multiinformation display.

3. Operate the meter control switches to select "Yes", and then press "OK".

My Room Mode is started and it is possible to use the air conditioning system, audio system, etc.

Select "No" and press "OK" when My Room Mode is not being used.

To disable My Room Mode, turn the power switch off.

My Room Mode will automatically be off when DC charging is completed.

Display information for electric power balance during My Room Mode

When starting My Room Mode, the electric power balance will be automatically displayed on the multi-information display, and an approximation of the electricity balance (the balance between the amount of electricity provided and electricity consumed) during My Room Mode can be checked.

1. Discharging (-)
2. Charging (+)

The size of the arrow symbol changes depending on the power supply and electricity consumption amounts.

If the electricity consumption is more than the power supply,(A) is displayed more than(B) .

If the power supply and electricity consumption amounts are equal, (A)and(B) are displayed as the same size.

Meter Display While Charging

When you turn the power switch ON to initiate charging, the system watches for a My Room Mode selection. If you do not engage My Room Mode within approximately 100 seconds, the power switch will automatically turn off. This smart timeout mechanism ensures that energy consumption is kept in check and that the vehicle’s systems are only activated when needed.

My Room Mode is designed to create an optimal balance between maintaining cabin comfort and safeguarding battery health. It actively manages the thermal environment of the traction battery while ensuring that various vehicle systems adjust accordingly.

Effects of Using My Room Mode

Activating My Room Mode during charging can lead to several observable effects:

• If the remaining charge of the traction battery drops to its lower limit, the air conditioning system will automatically shut down. In this case, the system prioritizes energy conservation. Once the battery’s charge level improves, simply turn the power switch off and then reactivate My Room Mode.
• Charging times may be extended, as the system deliberately slows the process to protect the battery and optimize its longevity.
• Under certain radio wave conditions, you might notice occasional noise from the radio. This interference is a side effect of the dynamic adjustments the system makes.
• The area around the onboard traction battery charger within the motor compartment may become warm during operation-a normal result of the thermal management processes working to keep the battery within its ideal temperature range.
• The electric power steering system warning light (yellow) might illuminate. This is not an indication of a malfunction but rather a signal that the system is fine-tuning its performance parameters.
• In normal charging mode, the system intentionally limits the final charge level to avoid a complete recharge. This controlled charging ensures that My Room Mode remains active and that the battery’s long-term health is maintained.

Using My Room Mode During DC Charging

When you engage My Room Mode during DC charging, the final charge delivered to the battery may be slightly lower compared to when this mode is not active. Additionally, in harsh environmental conditions-such as low outdoor temperatures combined with high humidity-the windows could fog up. Activating the vehicle’s cooling and dehumidification functions can effectively clear the windows; however, in doing so, the system may temporarily suspend the temperature management for the traction battery, which can result in a marginal decrease in the final charge level.

• Once the battery is fully charged, the system automatically exits My Room Mode, allowing the vehicle to transition smoothly into its regular operating state.

By leveraging these intelligent charging strategies, you not only enhance the energy efficiency of your electric vehicle but also extend the overall lifespan of its battery system. Smart charging practices like these are essential for reducing operational costs and promoting sustainability. Advanced electric vehicles-such as the Toyota bZ4X-demonstrate how integrated features like My Room Mode contribute to a seamless, eco-friendly driving experience, making them an excellent choice for the energy-conscious driver.

When "My Room Mode" is used while the traction battery is fully charged

When the power switch is turned on while the traction battery is fully charged and the charging connector that supplies power is connected, "Charging Port Lid is Open" is displayed on the multi-information display.

In this case, press on the meter control switches to display the setting screen of "My Room Mode", and then select "My Room Mode".

When "My Room Mode" is used while the traction battery is fully charged, the electric power of the traction battery may be consumed.

In this case, charging may be performed again.

Warning message display

When trying to start My Room Mode or My Room Mode is being used, if a message is displayed on the multi-information display, refer to the corresponding table and perform the appropriate correction procedures.

Message:

"Traction Battery is too Low for "My Room Mode"

Correction procedure:

There is no remaining charge of the traction battery to start My Room Mode. Wait until the remaining charge of the traction battery increases, start My Room Mode.

Message:

"My Room Mode" has stopped due to low traction battery"

Correction procedure:

The remaining charge of the traction battery is insufficient. Stop using My Room Mode and charge the traction battery.

Message:

"My Room Mode" will stop when traction battery is too low Reduce power usage to continue using "My Room Mode"

Correction procedure:

When My Room mode electricity consumption exceeds the charge amount, the traction battery charge level becomes too low.*

• If the electricity consumption of the vehicle can not be improved, My Room Mode will be off.
• When My Room Mode continuation is desired, turn off the air conditioning system, audio system, etc., to increase the remaining charge of the traction battery.

*: During My Room Mode, the information for electric power balance can be checked on the multi-information display.

WARNING

Critical Safety Warnings for Using My Room Mode

When using My Room Mode, it is essential to strictly follow the safety precautions detailed below. Negligence may lead to severe health risks or even fatal outcomes.

Important Safety Guidelines:

• Do not leave children, individuals who need care, or pets unattended inside the vehicle. My Room Mode can cause the cabin temperature to rise or fall dramatically due to features such as automatic shut-off. These fluctuations may result in conditions like heatstroke, dehydration, or hypothermia. Additionally, other systems-such as windshield wipers-may activate inadvertently, increasing the risk of accidents.
• Always inspect the surrounding area for any safety hazards before activating My Room Mode. Ensuring that the vicinity is secure not only prevents potential harm but also aids in the reliable operation of the vehicle’s automated functions.

My Room Mode is designed to optimize the cabin climate when the vehicle is parked, offering enhanced comfort and energy efficiency. However, its intelligent control systems require careful management to ensure that the interior environment remains safe, particularly when extreme temperature changes are possible.

Leveraging best practices in electric vehicle management is crucial for maintaining a safe environment. By following these guidelines, you not only protect vulnerable occupants but also preserve the integrity of the vehicle’s high-tech systems. Advanced electric vehicles-such as the Toyota bZ4X-integrate features like My Room Mode with built-in safety protocols to balance comfort with energy efficiency.

Incorporating these safety measures into your routine will help ensure that your vehicle remains a secure space even during extended stops. Embrace smart usage of My Room Mode to create a comfortable, yet safe, environment while also contributing to a more energy-efficient driving experience.