RepairPal Certified shops can diagnose and repair your 2010 Hyundai Santa Fe. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
An intermittent issue like this will need to be looked at. A complete scan of the system is needed. We won't be able to guess at this without looking at it.
Use this link to find a good shop near you.
https://repairpal.com/repair-shops
Alex