How to turn on heater in toyota corolla 2019?

The 2019 Toyota Corolla's HVAC system is fairly straightforward. If You want to engage the heater, simply adjust the temperature control dial upwards into the hotter range. If You would like it to blow more intensely, You'll need to adjust Your fan speed through the use of the rocker switch. You can adjust which air vents are in use by pressing the button labeled MODE in order to cycle through Your options. If one or more of these options isn't working, it's possible that You've got a fault within Your system. Specifically, it's possible that a no heat issue is caused by a bad heater core, a failed blower motor, or other ventilation system obstructions. If You have a more specific issue using Your heater, feel free to ask away!