The station was founded by Ray Wilson of Buffalo Communications, and in 1995, it was sold to Victor and LaVerta Page.
In 2005 the station moved its studios to Temecula and adopted a traditional commercial programming format with morning and evening local newscasts.
The next year, KZSW slashed positions and ditched live newscasts in favor of taped programs.
In February 2009, the station affiliated with NewsNet in a bid to provide local news, weather, and sports coverage pertinent to the Inland Empire and Southern California.
A source from Milenio newspaper in Mexico reported that Aquino created a new company, also using the KZSW name, with the intent of confusing advertisers.