Before raising the vehicle, the wheel diagonally opposite the one to be removed must be chocked.

Always chock the wheels using suitable wheel chocks. Chock the front of a front wheel, or the rear of a rear wheel. Make sure that the wheel chock is fully engaged with the tyre and the road surface.

If jacking the vehicle on a slope is unavoidable, place the chocks on the downhill side of both wheels on the axle not being raised.