Vehicle Code § 10853
CHAPTER 4. Theft and Injury of Vehicles
No person shall with intent to commit any malicious mischief, injury, or other crime, climb into or upon a vehicle whether it is in motion or at rest, nor shall any person attempt to manipulate any of the levers, starting mechanism, brakes, or other mechanism or device of a vehicle while the same is at rest and unattended, nor shall any person set in motion any vehicle while the same is at rest and unattended.