What is the Kenwood KDC-516S car audio code?
The Kenwood KDC-516S car stereo system features an anti-theft security code. According to the owner’s manual, “when the battery is removed from the unit’s power switch, you cannot turn on the unit again unless the preset security code is input.” There is no documented way to reset this function. If you purchased the unit secondhand, contact the seller to retrieve the security code.