It is illegal to leave a child under 7 unattended in a car if:

• The car engine is running
• The keys are located anywhere in the passenger compartment
• It poses a health or safety risk to the child
• All of the above
  Explanation:

  "It is an offense for a person, aged 13 years or older, responsible for a child under 7 years of age to knowingly leave that child unattended in a motor vehicle located on any public premises if: (1) The conditions pose a health or safety risk to the child (2) The engine of the vehicle is running; or (3) The keys to the vehicle are located anywhere inside the passenger compartment."