[zinger]

2010 Scion xB TSB's

2010 Toyota Scion Xb Engine And Engine Cooling Service Bulletin 318603

NHTSA: Action Number: 10041184 Service Bulletin Number: 318603
Report Date:
Jun 20, 2011Component:
Engine And Engine Cooling
Summary: Toyota: 2008-2011 xb. There may be abnormal noise from the idler pulley assembly. *rm

So since it is a known issue, you definitely have an argument for them to cover the repair for you.

 

[zinger]

I haven't had it done and didn't find any details about it on the web either. Maybe a Toyota tech will chime in.