2021 Polestar 1 Tire inflation pressure monitoring
Action when warned of low tire pressure
When the inflation pressure monitoring system detects low inflation pressure in a tire, immediate action is required.
If the system’s indicator symbol illuminates and the message Tire pressure low is displayed, check the tire pressure and inflate if necessary.
- Switch off the ignition.
- Check the inflation pressure on all four tires using a tire pressure gauge.
- Inflate the tire to the correct inflation pressure; see the tire pressure placard on the driver’s side B pillar for recommended pressures for factory-mounted tires.
- After the inflation pressure has been adjusted, always save the new inflation pressure in the system via the center display.Please be aware that the indicator symbol will not go out until the low tire pressure has been corrected and a storing procedure has been started for the new inflation pressure.
To help prevent incorrect inflation pressure, pressure should be checked when the tires are cold. The tires are considered to be cold when they have reached the same temperature as the ambient temperature (about 3 hours after the vehicle was last driven). After driving for a few kilometers, the tires will warm up and the pressure will increase.
- After inflating a tire, always replace the valve cap to help prevent valve damage caused by gravel, dirt, etc.
- Use plastic valve caps only. Metal caps could corrode and become difficult to remove.
- Incorrect inflation pressure could lead to tire failure, which could cause the driver to lose control of the vehicle.
- The system cannot predict sudden tire damage
Saving new reference values for tire inflation pressure monitoring
In order for the tire pressure monitoring system to function correctly, tire pressure reference values must be saved correctly. To help ensure that the system can correctly alert the driver of low inflation pressure, this must be done each time the tires are changed or the inflation pressure is adjusted.
For example, when driving with a heavy load or at high speeds (over 160 km/h (100 mph)), tire inflation pressure should be adjusted to the Polestar-recommended inflation pressure values. The system should then be reset by saving the new inflation pressure.
To store the new inflation pressure as a reference value in the system:
- Switch off the ignition.
- Inflate the tire to the correct inflation pressure; see the tire pressure placard on the driver’s side B pillar for recommended pressures for factory-mounted tires.
- Start the vehicle.
- Open the Car Status app in App view.
- Tap TPMS.
The vehicle must be stationary for the Store Pressure button to be selectable.
- Tap Store Pressure.
- Tap OK to confirm that the tire pressure in all four tires has been checked and adjusted.
- Drive the vehicle until the new inflation pressure has been saved. The new inflation pressure is stored when the vehicle is driven at speeds over 35 km/h (22 mph).
> When enough data has been collected for the system to detect low inflation pressure, the animation showing the progress of the storing procedure will disappear from the center display. The system will not provide any other confirmation that calibration has been completed.
If stores cannot be performed, Storing pressure is unsuccessful. Try again. will be displayed.
The exhaust gases contain carbon monoxide, which is invisible and odorless but very poisonous. The procedure for saving a new inflation pressure must therefore always be performed outdoors or in a workshop with exhaust gas extraction.
Tire pressure monitoring messages
A number of messages related to the Tire Pressure Monitoring System can be shown. Several examples are provided below.
| Instrument panel: Tire pressure lowCheck Car Status app in the center display | The indicator symbol will illuminate to indicate that inflation pressure is low in one or more tires. See the Car Status app in the center display for more information. |
| Instrument panel: The tire pressure system is temporarily unavailable | The indicator symbol will flash for about 1 minute and then glow steadily. The system is temporarily unavailable and will be activated momentarily. |
| Instrument panel: Tire pressure system service required | The indicator symbol will flash for about 1 minute and then glow steadily. The system is not functioning as intended. Contact Polestar Customer Support. |
Tire pressure monitoring system
The tire pressure monitoring system provides a warning symbol in the instrument panel if pressure is too low in one or more tires.
This symbol illuminates to indicate low inflation pressure. Check the inflation pressure in the Car Status app in the center display.
If there is a system malfunction, the inflation pressure warning symbol will flash for approximately one minute and then glow steadily.
System description
The tire pressure monitoring system measures differences in rotational speed between the wheels through the ABS system to determine if the tires are properly inflated. If inflation pressure in a tire is too low, its diameter (and consequently its rotational speed) changes. By comparing the tires with each other, the system can determine if the pressure in one or more tires is too low.
General information about the tire pressure monitoring system
In the following description, the tire monitoring system is generally referred to as TPMS.
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires is significantly under-inflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure.
Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life and may affect the vehicle’s handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevents the TPMS from functioning properly.
Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.
Keep in mind
- Always save the new inflation pressure in the system after changing a tire or adjusting the inflation pressure.
- If you switch to a tire of another size than the factory-mounted tires, the system must be reset by storing a new inflation pressure for these tires to avoid false warnings.
- If a spare wheel is used, it is possible that the tire pressure monitoring system will not work correctly due to the differences between the wheels.
- The system does not replace the need for regular tire inspection and maintenance.
- It is not possible to deactivate the tire pressure monitoring system.
- Incorrect inflation pressure could lead to tire failure, which could cause the driver to lose control of the vehicle.
- The system cannot predict sudden tire damage.
Viewing tire pressure status in the center display
With the system for tire pressure monitoring, tire pressure status can be viewed in the center display.
Checking status
The vehicle may need to be driven for a few minutes at a speed above 35 km/h (22 mph) to activate the system.
- Open the Car Status app in App view.
- Tap TPMS to display the status of the tires.
