Sorry I just got your message.
There is no tensioner on the xA. Loosen the Alternator bolts, one top and one bottom, to loosen Alternator, A/C, Waterpump, Crank belt.
Next there's two bolts to loosen on the power steering pump to loosen that belt. One might be hidden behind the ps pump pulley so you may have to spin is a bit to reveal the bolt. The other bolt is up top near the left side of the cylinder head. A long handled ratchet with an angled head is best to get at this bolt. Moving the A/C line out of the way is also a good idea, just be careful not to damage or loosen its connection.
There's printable service manual info on the xA page I believe. That's where I found step by step instructions on how to replace the belts.
heres a link
https://www.scionlife.com/tech/manual/?manual=xa04_0001
Good Luck!
