The most obvious reason to jack up a car is to change a tire, but other jobs, such as inspecting brakes, may also require you to get under the vehicle. Before you jack up your vehicle, observe the following safety precautions:
Use the jack only to get a vehicle off the ground, never to hold a vehicle in place.
Use jack stands when you work underneath your vehicle. People have been crushed to death when vehicles that were improperly secured fell on them.
Never jack up a vehicle without blocking the wheels to keep it from rolling. Use bricks, wooden wedges, or metal wheel chocks to block the wheels at the end of the car that isn’t being raised.
If you’re changing a tire and you have nothing to block the wheels with, park near