Vehicle theft and burglary are major crimes in San Diego County. The document provides tips to prevent these crimes, such as using a hidden kill switch or brake pedal lock, always locking doors and windows, parking in secure areas, and never leaving valuables or keys in unattended vehicles. Residents are advised to be alert for suspicious activities near cars and to take extra precautions parking in certain high-crime areas like shopping centers, apartment lots, and on-street parking at night.