Knowing where do you put the jack under a car is the most critical step for any DIY tire change or repair. Placing a jack incorrectly can damage your vehicle; the owner’s manual shows the precise reinforced points. Getting this wrong risks serious injury or costly damage to your car’s frame, rocker panels, or brake lines.
This guide will show you the exact, safe lift points for nearly every vehicle. We will cover factory jack points, how to use different types of jacks, and the common mistakes you must avoid. Let’s get started with the most important rule of all.
Where Do You Put The Jack Under A Car
The correct place to put a jack is always at one of your vehicle’s designated jack points. These are reinforced sections of the frame or unibody specifically engineered to handle the immense pressure of lifting the car’s weight. They are not random spots you guess.
Using any other area, like the oil pan, floor pan, or suspension components, can lead to the jack slipping or punching through the metal. This is extremely dangerous and can total your car. Your first and best resource is always your owner’s manual, which has diagrams showing the exact locations.
Primary Vehicle Jack Points Explained
While designs vary, most modern cars have standardized lift areas. Here are the four main types of jack points you will encounter.
Factory Pinch Weld Jack Points
This is the most common jack point on modern unibody vehicles (cars without a full frame). Look for a thick, vertical seam of metal running just inside the vehicle’s doors, between the front and rear wheels. It often has small notches or plastic covers. This “pinch weld” is structurally strong. When using a factory scissor jack, the top slot should cradle this weld securely.
- Do not place the jack head directly on the flat, thin body metal just above or below the weld.
- For floor jacks, use a pinch weld adapter or a small block of wood to distribute the load and prevent bending the metal.
Frame Rail Jack Points
Common on trucks, SUVs, and older body-on-frame vehicles, these are the thick, rectangular beams that run the length of the chassis. They are extremely robust. Look for a flat, solid section of the frame near the wheels. Avoid any part of the frame that is curved, has brackets, or has lines running along it.
Front Crossmember and Rear Differential
The front crossmember is a solid beam connecting the two sides of the front suspension. The rear differential is the central “pumpkin” housing the gears on the rear axle. These are safe central lift points for using a floor jack to raise one entire end of the vehicle. Always ensure the jack cup is centered and making solid contact.
- Never jack on the engine oil pan (front) or the fuel tank (rear).
Designated Side Jacking Points
Some sports cars and performance vehicles have specific, marked points along the side sills. They may be a small pad or a reinforced area. Always refer to the manual for these, as the locations can be unique.
How To Locate Your Car’s Specific Jack Points
If you don’t have your manual handy, follow this step-by-step process to safely find your lift points.
- Park on Solid, Level Ground: Engage the parking brake and place wheel chocks against the tires that will remain on the ground.
- Look for Notches or Markings: Along the pinch weld or rocker panel, feel for small cut-outs or indentations. Some cars have arrows or labels in the plastic trim.
- Check Behind Flaps or Covers: Some vehicles have small plastic access panels in the side skirt that pop off to reveal the jack point.
- Inspect the Frame: For trucks, crawl under and look for the most solid, flat section of the frame rail near the tire you need to lift.
- When in Doubt, Do Not Lift: If you cannot confidently identify a proper point, call for professional assistance. It’s not worth the risk.
Step-By-Step Guide To Jacking Up Your Car Safely
Once you’ve identified the correct point, follow this universal procedure for safe lifting.
Preparation and Safety Checks
Gather your tools: jack, lug wrench, and jack stands. Never work under a car supported only by a jack. Jack stands are mandatory. Put on safety glasses and gloves. Ensure the car is in “Park” (or first gear for manual) with the parking brake firmly set.
Positioning The Jack Correctly
Place the jack so its lifting pad sits squarely under the jack point. The jack should be perpendicular to the ground, not at an angle. For a scissor or bottle jack, crank the handle until the pad just contacts the metal. For a floor jack, pump the handle slowly to make contact.
Lifting The Vehicle
Lift in smooth, steady motions. Watch the vehicle and the jack as it rises. Stop lifting as soon as the tire clears the ground by about an inch or two. You do not need the tire way up in the air; this increases instability. The car should be stable and not rocking.
Placing Jack Stands and Lowering
Slide your jack stands under a secure, reinforced point near the jack. Often this is a section of the frame or a dedicated stand point. Adjust the stands to height so they engage just as you begin to slowly lower the jack onto them. Gently lower the jack until the car’s weight is fully on the stands. Give the car a slight shake to test stability before going underneath.
Types Of Jacks And Their Proper Use
Different jacks are designed for different points. Using them wrong is a common error.
Factory Scissor or Bumper Jacks
These come with the car for emergency tire changes. They are designed *only* for the specific side jack points (usually the pinch weld). The top of the jack has a groove or saddle that matches the car’s weld. Never use these flimsy jacks for any other purpose or under the center of the vehicle.
Hydraulic Floor Jacks
These are low-profile jacks that roll under the car. They are for use at central lift points like the front crossmember or rear differential to lift one entire end. You can also use them at side points with an adapter. They are not meant to hold the car up for extended periods; always use stands.
Hydraulic Bottle Jacks
These are tall, compact jacks with a high lift capacity, common for trucks. They work well on frame rails. Ensure the lifting pad is large enough to not damage the frame and that the jack is perfectly vertical to prevent it from kicking out sideways.
Common Jack Placement Mistakes To Avoid
These errors cause most accidents and vehicle damage. Be sure to steer clear of them.
- Jacking on the Rocker Panel: The flat, painted body metal behind the doors is not structural. It will crumple instantly.
- Lifting on the Suspension: Control arms, axles, and shock absorbers are not designed for vertical jacking force and can be damaged.
- Using the Oil Pan or Differential Cover: These are thin castings that crack easily, leading to immediate fluid loss and engine/axle failure.
- Placing Jack Stands on Unsafe Surfaces: Stands must go on solid ground, not asphalt that can soften, or on dirt that can shift.
- Skipping Jack Stands: A hydraulic seal can fail at any time. A car falling off a jack can be fatal. Never, ever skip this step.
Special Considerations For Different Vehicles
Some vehicles need extra attention due to their unique design.
Electric and Hybrid Vehicles
These cars often have high-voltage battery packs mounted underneath. The manual will specify exact points to avoid damaging this critical, expensive component. Some may have specific “jack mode” settings to stiffen the suspension.
Vehicles with Plastic Underbody Covers
Many modern cars have full plastic shields. You may need to feel through an access hole or consult the manual to find the metal jack point beneath the cover. Do not jack directly on the plastic.
Lowered Sports Cars and Classics
Low clearance requires a low-profile floor jack. Jack points can be hard to reach. Take extra time to position the jack perfectly. For classic cars with frame rails, ensure the metal is not rusted through before applying pressure.
Essential Safety Gear And Best Practices
Your safety is paramount. Beyond the jack and stands, consider these items and habits.
- Wheel Chocks: Use them every time to prevent the car from rolling.
- Gloves and Eye Protection: Protect your hands from sharp edges and your eyes from falling debris.
- Solid, Level Surface: Never jack on a slope, gravel, or soft ground. Concrete or paved asphalt is best.
- Check Jack and Stand Ratings: Ensure their weight capacity exceeds your vehicle’s gross weight.
- Work with a Partner if Possible: Having someone to spot you or call for help in an emergency is invaluable.
FAQ: Frequently Asked Questions
Can I jack up my car from the control arm?
No, you should not jack up your car from the control arm. While it might seem sturdy, it is a precision suspension component not designed for that type of load. Jacking here can bend the arm or damage the bushings, leading to poor alignment and unsafe handling.
Where is the jack point on a unibody car?
On a unibody car, the primary jack points are almost always on the reinforced pinch weld seams located just inside the front and rear wheels. Some models also have dedicated front and rear central points for use with a floor jack, as shown in your owner’s manual.
How do you find the jacking points without a manual?
To find jacking points without a manual, look for the thick vertical seam (pinch weld) along the rocker panel, often with notches. For trucks, locate the solid, flat section of the frame rail near the wheel. Searching online for “[Your Car Year, Make, Model] jack points” will usually yield diagrams or videos.
Is it safe to use the differential as a jack point?
Yes, the rear differential housing is a common and safe central jack point for rear-wheel drive vehicles to lift the entire back axle. Ensure the jack’s saddle is centered on the solid bottom of the differential casing, not on the thin cover plate. This is not suitable for front-wheel drive independent rear suspensions.
What happens if you jack a car from the wrong place?
If you jack a car from the wrong place, you risk severe damage. The jack can slip, causing the car to fall. It can also punch through body panels, crush brake lines, crack the engine oil pan, or damage the exhaust system. This leads to expensive repairs and creates a serious safety hazard for anyone nearby.