First responders are warning parents about the dangers of the summer heat and vehicles.

Weslaco fire Lt. Efrain Bautista says they usually experience one or two calls a month for children locked in vehicles.

Harlingen resident and mother Claudia Martinez explained her terrifying experience when she left her 9-month-old child in the car while she was at the grocery store.

"It happened to me one time so it was hard for me when I saw my baby sweating in the back seat - I was in shock," Martinez said.

Martinez now reminds all parents to leave any distractions aside.

For more information watch the video above.