Extreme heat can affect the human body, animals and serious damage to your vehicle, if you don't maintain it properly.
The heat can damage the rubber of your tires which can cause them to dry out especially if they are under or overly inflated.
The battery in your vehicle is composed of acid and water, when the temperature heats up, the water evaporates faster. If possible park in a shaded area, or under a canopy.
Keep up with the oil maintenance for your vehicle, a hot engine needs lubrication.
Check all the fluid levels in your engine along with the temperature gauge.
The fuel level should be between 1/2 to a full tank, as the heat can evaporate quickly.