Learning how to jack up a car is a fundamental skill for any vehicle owner. Whether you’re changing a flat tire, rotating your tires, or performing basic maintenance, doing it safely is paramount. Securing your vehicle on a jack is the first step before supporting it with jack stands. This guide will walk you through the entire process, from preparation to lowering the car, ensuring you can work confidently and without risk.
Using a jack incorrectly can lead to serious injury or catastrophic damage to your vehicle. The goal is not just to lift the car, but to do so in a controlled and secure manner. We will cover the different types of jacks, the critical points on your car’s frame, and the absolute necessity of using jack stands. Let’s get started with the essential tools and preparations you’ll need.
How To Jack Up A Car
This section provides the core, step-by-step procedure. Following these instructions in order is crucial for your safety. Never skip a step or take shortcuts when lifting thousands of pounds of metal.
Essential Tools And Preparations
Before you even touch the jack, gather your equipment and prepare the work area. Having everything on hand prevents you from having to search for tools while the car is precariously lifted.
Required Equipment
- A hydraulic floor jack or a quality scissor jack (the one that comes with your car is usually a minimum for tire changes).
- A pair of robust jack stands. These are non-negotiable for any work underneath the vehicle.
- A wheel chock or two. A sturdy piece of wood or a brick can work in a pinch.
- Your vehicle’s owner’s manual. This is your bible for locating specific jack points.
- A basic socket set or lug wrench for removing wheels if needed.
- A flashlight for better visibility.
- Work gloves to protect your hands.
Choosing a Safe Location
Always work on a firm, level, and stable surface. Concrete or solid asphalt is ideal. Never attempt to jack up a car on dirt, gravel, grass, or any sloped surface, as the jack can sink or shift. Find a spot away from traffic and turn on your vehicle’s hazard lights to alert others. Engage the parking brake fully. If you are lifting the rear of the car, chock the front wheels. If lifting the front, chock the rear wheels. This prevents the car from rolling.
Locating Your Vehicle’s Jack Points
This is the most critical step for preventing damage. Your car has specific reinforced points designed to handle the pressure of a jack. Lifting from any other area, like the floor pan, oil pan, or suspension components, can cause severe and expensive damage.
Consulting the Owner’s Manual
Your owner’s manual will have diagrams showing the exact front and rear jack points for your make and model. These are often marked by small notches or reinforced sections along the side sills or subframe. If you’ve lost your manual, a quick online search for your car’s year and model plus “jack points” will usually yield a clear image.
Common Jack Point Locations
- Side Sill Jack Points: For most modern unibody cars, these are located just behind the front wheels and just ahead of the rear wheels along the reinforced rocker panel. They are often marked with a notch or a triangle symbol.
- Front Central Jack Point: Many cars have a reinforced crossmember or engine cradle at the front center. This is a common point for using a floor jack to lift the entire front end at once.
- Rear Differential or Axle: For rear-wheel-drive vehicles, the solid rear differential housing is a strong central lifting point. For others, a central rear crossmember may be used.
- Factory Scissor Jack Points: The jack that came with your car is designed to fit into a specific slot on the side sill. Use only that point for that jack.
The Step-by-Step Lifting Procedure
Now that you’re prepared and know where to lift, follow these steps methodically. Rushing is the enemy of safety.
- Chock the Wheels: Place your wheel chocks firmly against the tires on the end of the car that will remain on the ground. For example, if lifting the front, chock both rear wheels.
- Loosen Lug Nuts (For Tire Work): Before lifting, slightly loosen the lug nuts on the wheel you’ll be removing. The weight of the car on the ground keeps the wheel from spinning.
- Position the Jack: Carefully place your hydraulic floor jack under the correct jack point. Ensure the jack’s saddle (the lifting pad) is centered and making solid contact with the metal. For side sill points, a small hockey puck or a piece of wood on the saddle can help protect the car’s paint and provide a better fit.
- Lift the Vehicle Slowly: Begin pumping the jack handle smoothly. Watch the car and the jack closely as it rises. Stop lifting once the tire is about 1-2 inches off the ground if you’re just changing a tire. If you need more clearance for stands, you will lift higher in the next step.
- Place Jack Stands: This is the most important safety step. With the car held by the jack, slide your jack stands under a secure, reinforced point near the jack. Never use the jack point itself; use a different solid section of the frame or a dedicated stand point outlined in your manual. Adjust the stand’s height so it fits snugly when locked in place.
- Lower Onto Stands: Very slowly lower the hydraulic jack until the vehicle’s weight is fully resting on the jack stands. You should feel the weight transfer. Give the car a gentle shake with your hands to test the stability on the stands. It should not rock or move.
- Secondary Safety (Optional but Recommended): If you plan to be under the car, place the removed wheel and tire under the rocker panel near your work area. This acts as a final safety buffer in the extremely unlikely event both the jack and stands fail.
Working Under The Vehicle Safely
Once the car is securely on jack stands, you can proceed with your task. Never, under any circumstances, place any part of your body under a vehicle supported only by a jack. Jacks are for lifting; stands are for supporting.
Performing Your Maintenance
You can now safely remove wheels, inspect brakes, change oil, or perform other repairs. Keep your tools organized and avoid excessive pushing or pulling on the vehicle that could destabilize it. Always be aware of where the stands are positioned.
Lowering The Car Correctly
When your work is complete, reversing the process correctly is just as important.
- Clear all tools, stands (except the supporting ones), and debris from under the car.
- If you removed a wheel, hand-tighten the lug nuts back on the studs.
- Carefully raise the car with the hydraulic jack just enough to take the weight off the jack stands.
- Remove the jack stands and stow them away from the work area.
- Slowly lower the car all the way to the ground using the jack’s release valve.
- If you reinstalled a wheel, now fully tighten the lug nuts in a star pattern to the proper torque specification.
- Remove the wheel chocks and you’re done.
Common Mistakes And How To Avoid Them
Awareness of these frequent errors can prevent accidents.
- Using Only the Jack: Reiterating: never get under a car held up by just a jack. Jacks can fail or leak fluid suddenly.
- Lifting on Unsafe Ground: Soft ground can cause the jack to tilt or sink. Always find a hard, level surface.
- Ignoring Jack Points: Crushing a brake line or the floorboard is an expensive lesson. Always locate the proper points.
- Inadequate Jack Stand Placement: Ensure the stands are on a flat, solid part of the frame and are perfectly vertical.
- Forgetting to Chock Wheels: This simple step prevents the car from rolling off the stands.
Choosing The Right Jack And Stands
Investing in good quality equipment is an investment in your safety.
Types of Jacks
- Hydraulic Floor Jack: The best choice for most home mechanics. They are stable, easy to use, and provide a good range of lift. Look for one with a weight capacity exceeding your vehicle’s weight.
- Scissor Jack: The compact jack included with your car. It’s fine for emergency tire changes on level ground but is less stable and slower to operate than a floor jack.
- Bottle Jack: Compact and powerful, but can have a narrow base which affects stability. Often used for trucks and SUVs.
Selecting Jack Stands
Choose stands with a weight rating higher than your car’s gross weight. Look for wide, solid bases and locking pins that securely engage. Never use makeshift stands like cinder blocks or piles of wood—they can shatter or collapse without warning.
FAQ: Frequently Asked Questions
Here are answers to some common queries about jacking up a vehicle.
Can I Jack Up My Car on an Incline?
No, you should never jack up a car on an incline or sloped driveway. The risk of the vehicle rolling or the jack tipping is far to great. Always find a level surface for any lifting procedure.
Is It Safe to Use the Jack That Came With My Car?
The factory scissor jack is safe for its intended purpose: changing a single tire in an emergency on level, solid ground. It is not designed for you to work under the car or for prolonged support. For any maintenance work, you must use proper jack stands.
How Many Jack Stands Do I Need?
For most jobs, two jack stands are sufficient. If you are lifting the entire front or rear of the car, place a stand under each side on solid frame points. For maximum stability when lifting the entire side of a car, some professionals use four stands.
What Should I Do If My Jack Starts to Lower By Itself?
If you notice the car sinking slowly while on the jack, do not try to stop it. Immediately move away from the vehicle and let it settle to the ground. The jack likely has a failed seal. Do not use that jack again until it has been professionally repaired or replaced.
Where Can I Find the Jack Points If I Don’t Have a Manual?
Look along the rocker panels (the area beneath the doors) for notches, reinforced seams, or sometimes small plastic covers. You can also search online forums for your specific car model or check a repair manual like those from Chilton or Haynes, which are available at most auto parts stores.
Mastering how to jack up a car is a simple yet vital skill. By taking your time, using the correct equipment, and prioritizing safety at every single step, you can perform basic maintenance with confidence. Remember the golden rule: the jack is for lifting, and the stands are for holding. Now you have the knowledge to lift your vehicle safely and get the job done right.