Toyota Yaris: If a Warning Light Turns On or Flashes / Taking Action

Take the appropriate action and verify that the warning light turns off.

KEY Warning Light

Take the appropriate action and verify that the warning light turns off.

Low Fuel Warning Light

The light illumination timing may vary because fuel inside the fuel tank moves around according to the driving conditions and the vehicle posture.

Seat Belt Warning Light

• The warning light flashes for about 6 seconds if the driver’s seat belt is not fastened when the ignition is switched ON.
• To allow the front passenger occupant classification sensor to function properly, do not place and sit on an additional seat cushion on the front passenger’s seat. The sensor may not function properly because the additional seat cushion could cause sensor interference.
• If a small child is seated on the front passenger’s seat, the warning light may not operate.

Tire Pressure Monitoring System Warning Light

• Perform tire pressure adjustment when the tires are cold. Tire pressure will vary according to the tire temperature, therefore let the vehicle stand for 1 hour or only drive it 1 mile (1.6 km) or less before adjusting the tire pressures. When pressure is adjusted on hot tires to the cold inflation pressure, the TPMS warning light/beep may turn on after the tires cool and pressure drops below specification.
• Also, an illuminated TPMS warning light, resulting from the tire air pressure dropping due to cold ambient temperature will remain illuminated even if the ambient temperature rises. In this case, it will also be necessary to adjust the tire air pressures. If the TPMS warning light illuminates due to a drop in tire air pressure, make sure to check and adjust the tire air pressures.
• Tires lose air naturally over time and the TPMS cannot tell if the tires are getting too soft over time or you have a flat. However, when you find one low tire in a set of four-that is an indication of trouble; you should have someone drive the vehicle slowly forward so you can inspect any low tire for cuts and any metal objects sticking through tread or sidewall. Put a few drops of water in the valve stem to see if it bubbles indicating a bad valve. Leaks need to be addressed by more than simply reinflating the tire as leaks are dangerous - take it to your Toyota dealer.

WARNING

If the tire pressure monitoring system warning light illuminates or flashes, or the tire pressure warning beep sound is heard, decrease vehicle speed immediately and avoid sudden maneuvering and braking

If the tire pressure monitoring system warning light illuminates or flashes, or the tire pressure warning beep sound is heard, it is dangerous to drive the vehicle at high speeds, or perform sudden maneuvering or braking. Vehicle drivability could worsen and result in an accident.

To determine if you have a slow leak or a flat, pull over to a safe position where you can check the visual condition of the tire and determine if you have enough air to proceed to a place where air may be added and the system monitored again by your Toyota dealer or a tire repair station.

Do not ignore the TPMS Warning Light

Ignoring the TPMS warning light is dangerous, even if you know why it is illuminated. Have the problem taken care of as soon as possible before it develops into a more serious situation that could lead to tire failure and a dangerous accident.