The Toyota Yaris uses an ‘indirect’ tyre pressure monitoring system which means rather than using sensors located in each tyre, the system uses data sent from the ABS (anti-lock braking system) wheel speed sensors. For the system to operate correctly, it’s important that the recommended tyre pressures are used and the system is reset when certain changes are made. Recommended tyre pressures can be found on the tyre pressure label.
In the following instances, the Toyota Yaris tyre pressure system must be reset so that the system operates normally. Resetting or ‘initialising’ the system must occur when:
- A tyre pressure has been adjusted.
- A tyre or wheel has been replaced.
- Tyre rotation has occurred.
- The vehicle battery has been replaced or recharged are being completely discharged.
- Any time the tyre pressure monitoring warning light is illuminated.
Toyota Yaris Tyre Pressure Reset
- Safely and securely park your car by ensuring the parking brake is firmly applied and the ignition is switched off. The tyre pressure system cannot be reset if the vehicle is moving.
- Allow the tyres to cool then adjust the pressures of all four tyres to the specified values located on the tyre pressure label. The tyre pressure label can be located on the vehicle ‘B pillar’. Open the driver’s door to find it.
- Switch on the ignition.
- With the vehicle still parked, press down and hold the tyre pressure reset button. Depending on your version of Toyota Yaris, the tyre pressure button may be located on the dashboard or located under the dashboard in the driver’s footwell.
- On the dashboard information display, the tyre pressure warning light will flash twice followed by a beep.
- The tyre pressure monitoring system has now been reset with the new pressure values.
How often should you check tyre pressures?
Air pressure inside your tyres decreases naturally over time. If the tyre pressure warning light illuminates without any obvious sign of a puncture, it’s likely that pressures have naturally decreased. Ideally you should check all four tyres pressures once every two week. It’s also recommended that you check pressures just before a long journey.
Tyre pressure monitoring system not working as expected.
The tyre pressure monitoring system may not perform as expected due to the following circumstances:
- The make or size of tyre is different to that specified by Toyota.
- There are different size tyres fitted to the vehicle or tyres by different manufacturers.
- Tyre wear is excessively different between all tyres fitted.
- Run-flat tyres have been fitted.
- Emergency tyres has been fitted. In this instance, the tyre pressure warning light may illuminate or flash.
- A tyre has been repaired using the emergency flat tire repair kit.
- Tyre pressures of all four tyres vary considerably.
- The tyre pressure monitoring system may not operate at speeds lower than about 9.3 mph (15 km/h), or the vehicle has been driven for less than 5 minutes.
- The tyre pressure monitoring system may not operate when driven on very rough or icy roads.
- Uneven load on the vehicle.
- They tyre pressure system has not been reset to the specified pressures after alteration.
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