2009 S40 Volvo - TPMS Help

[freedreams]

So it appears that I have the sensor is the cause for the air leak, or its in that area. How can I tell for sure without going to a tire shop?

[TPMS-Tech]

You should take it to a tire shop to see if the sensor is properly torqued to the wheel or if it needs a new service kit, which may be the cause of the leak.