Does the Volvo XC90 have psi wheel sensors?

The Volvo XC90 uses a Tire Pressure Monitoring System (TPMS) to monitor the air pressure in each tire. The TPMS uses sensors located inside each wheel to measure the air pressure and transmit the data to a receiver in the car. If the air pressure in any tire drops below a certain level, the TPMS will alert the driver with a warning light on the dashboard.

The Volvo XC90 uses indirect TPMS, which means that it does not use individual pressure sensors in each wheel. Instead, it uses the car's ABS sensors to monitor the wheel speed. If the air pressure in a tire drops, it will cause the tire to rotate at a different speed than the other tires. The ABS sensors will detect this difference in speed and send a signal to the TPMS, which will then alert the driver.

It is important to note that indirect TPMS is not as accurate as direct TPMS, which does use individual pressure sensors in each wheel. However, indirect TPMS is less expensive and does not require any special tools or equipment to install.