Theme ICON

i try to change some icon from the theme, whereby the icons are stored here:
“https://www.mywebsite.com/wp-content/themes/DL/templates/template_dealer_theme//cars/2.png”

that 2.png is the icon i wanted to change, but once i replace the icon in “cars” folder, and then upload, nothing changed.

i think its because of the double slashes.
But i try to “inspect element” and edit to one slashes, the picture will not be loaded.

Appreciate if somebody can help me.