How to safely jack up a car for repairs?

Why Proper Jacking Matters

Lifting a vehicle for repairs is a common DIY task, but it carries real risks. Every year, injuries occur when cars slip off jacks or stands. Following the correct procedure - and using the right equipment - is not optional; it is essential for your safety. This guide covers the fundamentals, but always consult your vehicle owner’s manual for specific lift points and weight limits.

Choosing the Right Equipment

Using the wrong jack or relying on it alone is a common mistake. The jack lifts the car, but jack stands hold it safely.

The Jack

• Floor jack: The best choice for most home garages. It rolls easily and lifts quickly. Choose one rated for at least 1.5 times your vehicle’s weight.
• Scissor jack: Typically included with your car for emergencies. It works for a tire change but is not stable enough for extensive under-vehicle work.
• Bottle jack: Compact and strong, but less stable on uneven surfaces. Use only on level ground.

Jack Stands

• Always use jack stands - never work under a car supported only by a jack.
• Look for a pair (or two pairs for lifting both ends) rated for at least the same weight as your jack.
• Inspect stands for cracks, rust, or bent parts before each use.

Additional Safety Gear

• Wheel chocks: Place them behind the wheels that remain on the ground.
• Gloves and safety glasses: Protect against pinch points and debris.
• A hard, level surface: Concrete is ideal; avoid gravel, dirt, or asphalt on hot days.

Step-by-Step Process

1. Park on a Level Surface

Engage the parking brake firmly. If lifting the front, chock the rear wheels. If lifting the rear, chock the front wheels. Shift an automatic transmission into Park; a manual into first gear or Reverse.

2. Locate the Proper Lift Points

Refer to your owner’s manual. Common points include reinforced pinch welds (for floor jacks) or a dedicated crossmember. Never lift by the oil pan, transmission pan, floor pan, or suspension components.

3. Position the Jack

Place the jack directly under the designated lift point. If using a floor jack, center the saddle. Raise the jack slowly until it contacts the vehicle, then do a quick visual check that the contact point is secure.

4. Lift the Vehicle

Pump the jack handle steadily. Stop as soon as the vehicle clears the height needed to slide the jack stand underneath. Do not lift higher than necessary.

5. Place Jack Stands

Position the jack stand under the factory-recommended support point (often the same as the lift point or a frame rail). Adjust the stand so it is as high as possible with only a slight gap to the vehicle. Lower the jack slowly until the vehicle rests completely on the stand. Shake the car gently to confirm it is stable before crawling underneath.

6. Repeat for the Other Side

If lifting both sides, repeat the process for the second corner, placing a second stand. Never use a single jack stand to support one end of the car unless the manual explicitly allows it.

7. Lowering the Vehicle

Raise the jack back up until it just contacts the lift point (you should feel it take the weight). Remove the jack stand. Lower the jack slowly, watching for clearances. Remove wheel chocks last.

Common Mistakes to Avoid

• Relying solely on a jack: A hydraulic jack can fail from a seal leak or metal fatigue. Stands are non-negotiable.
• Lifting on an uneven surface: A car can roll or tip if the ground slopes.
• Forgetting to chock the wheels: Without chocks, even a parked car can roll when lifted.
• Using damaged equipment: Inspect jacks and stands for cracks, rust, or bent parts before every use.
• Overloading the supports: Always check the rated capacity (printed on the side) and never exceed it.

When to Call a Professional

If you lack a level concrete surface, the correct jack and stands, or confidence in identifying lift points, it is safer to have a certified technician perform the work. Shop rates vary, but the cost is modest compared to an injury or vehicle damage. Additionally, if you are servicing critical systems like brakes or suspension, ensure you have the tools and knowledge to proceed - it is often better to pay a professional than to risk a safety-critical error.

Final Safety Check

Before starting any repair, make sure:

• The vehicle is stable on jack stands.
• You have easy access to the area you are working on.
• No one else is near the lifted vehicle.
• You have read the relevant section of your owner’s manual.

Safe jacking is about preparation and patience. Take your time, use the right gear, and never compromise on safety.