What is a Jack and Wrench? A Beginner’s Guide to Basic Car Tools

Whether you're a first-time car owner or just starting to explore car maintenance, there are two essential tools you should always have in your trunk: a jack and wrench. These basic tools play a critical role in helping you handle common roadside situations, especially flat tires. In this beginner-friendly guide, well explain what a jack and wrench are, how they work, and why they are a must-have in every car toolkit.

What is a Jack?

A jack is a mechanical or hydraulic device used to lift a vehicle off the ground. It allows you to safely raise part of your carusually one cornerso you can change a tire, inspect the underbody, or perform minor repairs.

? Types of Car Jacks:

1. Scissor Jack

   • Common in most car trunks

   • Operated manually by turning a handle or rod

   • Lightweight and compact

2. Hydraulic Bottle Jack

   • Uses hydraulic pressure to lift vehicles

   • Stronger and faster than scissor jacks

   • Better for heavier vehicles (SUVs, trucks)

3. Floor Jack (Trolley Jack)

   • Found in garages/workshops

   • Rolls under the car and lifts quickly

   • Not ideal for roadside use due to size

Note: Always use a jack on a flat, solid surface and secure the vehicle with the parking brake before lifting.

What is a Wrench?

A wrench, also called a lug wrench or wheel spanner, is a tool used to loosen or tighten the lug nuts that secure a wheel to the car. Youll need a wrench to remove the flat tire and install the spare.

? Types of Wrenches for Cars:

1. L-Type Wrench (Lug Wrench)

   • Standard tool with a single socket

   • Shaped like an L for leverage

2. X-Type or Cross Wrench

   • Has multiple socket sizes

   • Offers better grip and torque

3. Telescopic Wrench

   • Adjustable length for more leverage

   • Compact and ideal for keeping in your car

4. Impact Wrench (Electric or Battery-Powered)

   • Used in workshops

   • Loosens tight bolts quickly with power

Tip: Always ensure your wrench matches your cars lug nut size for effective use.

When and Why Do You Need a Jack and Wrench?

These tools are most commonly used when:

• You have a flat tire and need to replace it with a spare

• Performing quick repairs like checking brakes or fixing a leak

• Lifting the car to place jack stands or wheel chocks for safety

Together, a jack and wrench allow you to change a tire without needing professional helpespecially useful during emergencies or in remote areas.

Safety Tips for Using a Jack and Wrench

• Always park on a level surface before using a jack

• Engage the parking brake and place wheel chocks if available

• Never crawl under the car with only the jack supporting it

• Use a jack stand for added safety during long repairs

• Loosen lug nuts slightly before jacking up the car

• Tighten lug nuts in a star pattern for even pressure

Conclusion

Understanding how to use a jack and wrench is a basic but vital skill for every car owner. These tools are small, affordable, and life-saving when you're stuck with a flat tire or minor roadside issue. Whether you drive daily or occasionally, keeping a reliable jack and wrench in your car can make a huge difference when it matters most.

Take the time to familiarize yourself with your vehicles specific tools, and consider practicing at home so youre confident when the real moment comes. Because when it does, youll be glad you knew exactly how to use your jack and wrench.