Tire Pressure Sensor
WARNING: This page is about a different car, the 2010 Volvo V70, 2009 Volvo V70, and 2008 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
The tire pressure sensors are installed together with the air valve on the rim. The sensor consists of a pressure sensor, a communication circuit, an acceleration sensor and a battery.
NOTE:
Special procedures are required for removing the tire from the rim depending on vehicle model and tire type. This is to prevent damaging the sensor.