2007 Volvo S60 2.5T won't start

My 2007 Volvo S60 2.5T with 120,000 miles just died on last Monday morning. Towed it to a local mechanic and his computer is seeing multiple issues such problems with engine controller, too much oil in turbo 2 and another electronics part. Mechanic is recommending to take it to dealer. Wondering if anyone else has dealth with such issues in Volvo S60-2.5T and what’s the best way to get it fixed.