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group 25
Yes.
There are 3: the Xa, Xb, and Tc
As far as I'm told, you don't. 2006 Scion Xa's came with a tray where the filter would go, but there is no "Cabin Filter" for this vehicle. According to two of my Toyota/Scion dealers, though a filter might be made to fit, doing so would restrict the air flow because the vehicle air/venting system is designed to work without one. You can check with your Scion dealer, but this is what I was told when I was unable to find a cabin filter's at the parts stores and later, Scion parts itself.
Scion XA wiring diagram is a drawing and information. In the wiring diagram it shows how to work the wiring.
Three and three-quarters max, and three quarts min.
11.6 Gallons
== ==
YES
It is probably a burned thermal switch. I had the same thing on my car and had to replace the thermal switch
4 quarts
scion xa and xb