First, Confirm the Warrant
Not every warrant is the same. A bench warrant often follows a missed court date; an arrest warrant may come from a new case. Each has its own bail amount, or none. Before doing anything else, we confirm what kind of warrant it is, which court issued it and whether bail is set.
If the person has already been picked up, check the San Bernardino County Sheriff inmate locator (https://wp.sbcounty.gov/sheriff/inmate-locator/) before assuming where they are held. Location can change quickly after an arrest.