V60 D5 aux belt and tensioner
 

I'm looking to buy a March 2013 (13) V60 D5 auto with 58k miles. It has full Volvo service history, with the last service in February.

The seller (a non-Volvo garage) has just confirmed to me that the aux belt was NOT changed at the last service. Should I be worried? Does the 54k mile replacement interval apply to this model? Roughly how much will it cost me to get the aux belt replaced at a Volvo dealer?

I believe the replacement interval for the tensioner is 108k miles. But was there a recall for the tensioner applicable to an early 2013 model?

TIA