Lyons waived his right to a preliminary hearing Friday.
RELATED: Former LA County sheriff's deputy charged in fatal 2019 on-duty shooting in Willowbrook
Lyons is charged in the 2019 fatal shooting of 24-year-old Ryan Twyman.
Video shows Twyman putting his car in reverse as two deputies open fire. He died at the scene.
Lyons was charged with voluntary manslaughter and assault with a semi-automatic firearm.
He's due back in court later this month.