What are the functions of the two buttons next to the handbrake in the Yaris X?
3 Answers
The two buttons next to the handbrake in the Yaris X are for the brake assist system. Correct operation method: When the seat belt is properly fastened, if you need to stop temporarily, press the button. In "D" gear, you can release the brake pedal without the vehicle moving. To start, simply press the accelerator pedal. Function of the automatic parking system: The application of AUTOHOLD automatic parking technology allows the driver to avoid unnecessary vehicle sliding without the need for prolonged braking or activating the electronic parking brake. Additionally, this function prevents the vehicle from rolling back when starting on a slope. For example, when waiting at a red light, with AUTOHOLD, you don't need to keep pressing the brake or shift to neutral and pull the handbrake, reducing parking operations and making it more convenient and safer.
After driving for so many years, I'm very familiar with those two buttons next to the handbrake in my Yaris X. The left one is the ECO fuel-saving mode—when pressed, a green light illuminates on the dashboard, the throttle response becomes gentler, and the car feels smoother and more fuel-efficient, making it especially suitable for city commuting and traffic jams. The right one is the SPORT mode—press it, and the light turns red, the engine output increases, making it super responsive for overtaking and incredibly fun for mountain road driving. Their placement beside the handbrake is very convenient, easily reachable without obstruction. In daily use, I prefer keeping ECO on for extended periods to protect engine components, occasionally switching to SPORT for a spirited drive. Avoid pressing the buttons too forcefully to prevent poor contact, and the smoothest mode switching occurs after the vehicle is started. This design is quite clever—saving fuel while extending component lifespan. My beloved car is still in great condition after five years.
Working at the dealership, I've seen many Yaris X cases. Those two buttons are mainly for driving mode selection: the ECO button activates fuel-saving mode by limiting throttle opening to reduce consumption, while the SPORT button unleashes stronger power output. Checking their functionality during repairs is simple: start the vehicle, press the buttons, and observe if the dashboard indicator lights up or engine RPM fluctuates. Common issues include dust accumulation causing button jams (just disassemble and clean), or complete unresponsiveness which may indicate blown fuses or module failure (test voltage with multimeter). Recommend owners clean button areas with electrical cleaner every six months. When switching modes while driving, maintain steady speed for safety - avoid sudden changes during rain/snow that could affect traction. With proper care, these buttons have good durability.
