Officer Sara Faden says Lane's body was found Thursday in a Woodland Hills hotel. She had no immediate information on the cause or circumstances of his death.
With his long blond hair and tight leather outfits, Lane embodied the excess of 1980s "hair metal" rock bands. He joined Warrant in 1984 and wrote such hits as "Heaven," "Down Boys" and "Cherry Pie."
He had an on-and-off relationship with the band, leaving it in 1992 before returning and quitting again several times.
In recent years, he appeared in VH1's "Celebrity Fit Club" and made news for a drunken driving arrest.
He is survived by two daughters from two previous marriages.