How to Change Rear Brake Pads Mazda CX-5: A Comprehensive Tutorial

Are you hearing that dreaded screeching sound coming from your Mazda CX-5? It might be time for new rear brake pads. While it may seem daunting, changing your rear brake pads is a DIY project that can save you money and give you a sense of accomplishment. This guide will walk you through the process step-by-step, making it easy for even novice mechanics to tackle this essential maintenance task.

Gather Your Tools and Parts

Before you dive in, make sure you have everything you need. Here’s a list of tools and parts:

• New rear brake pads: Make sure to purchase the correct pads for your Mazda CX-5 model year.
• Brake pad shims (if applicable): Some brake pads come with shims already installed. If not, ensure you have the correct shims for your model.
• Jack and jack stands: Safety first! Use a jack and jack stands to lift your CX-5 safely.
• Lug wrench: To loosen and tighten the lug nuts.
• Torque wrench: Essential for tightening lug nuts to the correct specification.
• Socket set: You’ll need sockets to remove and install the brake caliper bolts.
• C-clamp or brake caliper piston tool: To compress the brake caliper piston.
• Penetrating fluid (optional): To help loosen any stubborn bolts.
• Gloves: Keep your hands clean and protected.
• Safety glasses: Always wear safety glasses when working with tools.

Safety First: Preparation and Precautions

Before you start, it’s crucial to prioritize safety:

• Park your CX-5 on a level surface: Ensure your car is stable and won’t roll while you’re working.
• Engage the parking brake: This will help prevent the car from rolling.
• Chock the front wheels: Place wheel chocks behind the front tires to further prevent the car from rolling.
• Wear appropriate clothing: Avoid loose clothing that could get caught in moving parts.

Removing the Rear Wheels

1. Loosen the lug nuts: With the car safely parked, use your lug wrench to loosen the lug nuts on the rear wheels you’ll be working on. Don’t fully remove them yet.
2. Raise the car: Jack up the car using the designated jack points under the car. Consult your owner’s manual for the correct jack points.
3. Secure the car with jack stands: Once the car is lifted, place jack stands under the frame, ensuring they are securely in place.
4. Remove the lug nuts and wheels: Remove the lug nuts completely and carefully pull off the rear wheel.

Accessing the Brake Pads

1. Locate the brake caliper: The brake caliper is mounted to the brake rotor, which is attached to the wheel hub. It’s a large, metal component with a piston inside.
2. Identify the brake pad retaining pins: These are usually small pins that hold the brake pads in place. You may need to use a small punch or screwdriver to tap them out.
3. Remove the brake pads: Once the retaining pins are removed, carefully pull the brake pads out of the caliper.

Compressing the Brake Caliper Piston

1. Open the brake fluid reservoir: Locate the brake fluid reservoir, usually under the hood.
2. Clean the reservoir cap: Wipe the cap with a clean cloth to prevent dirt from entering the reservoir.
3. Compress the piston: Using a C-clamp or brake caliper piston tool, slowly compress the piston back into the caliper. Be careful not to damage the piston or the seal.
4. Add brake fluid (if needed): As you compress the piston, brake fluid will be displaced. Check the brake fluid level and add more if necessary.

Installing the New Brake Pads

1. Install the shims (if applicable): If your new brake pads don‘t come with shims, install them on the back of the pads.
2. Insert the new brake pads: Carefully slide the new brake pads into the caliper, ensuring they are properly seated.
3. Replace the retaining pins: Insert the retaining pins back into the caliper, ensuring they are securely in place.
4. Install the caliper: Slide the brake caliper back onto the brake rotor and make sure it’s properly aligned.
5. Tighten the caliper bolts: Tighten the caliper bolts to the manufacturer’s specifications using your torque wrench.

Re-attaching the Wheel and Final Touches

1. Lower the car: Carefully lower the car using the jack, making sure the weight of the car is fully supported by the tires.
2. Tighten the lug nuts: Using your torque wrench, tighten the lug nuts to the correct specification. Consult your owner’s manual for the correct torque value.
3. Remove the jack stands: Once the lug nuts are tight, remove the jack stands.
4. Pump the brakes: With the car safely on the ground, pump the brake pedal several times to ensure the brakes are working properly.

Test Drive and Final Checks

Before driving, conduct a final check:

1. Check for leaks: Inspect the brake lines and caliper for any signs of leaks.
2. Check for proper brake pedal feel: The brake pedal should feel firm and responsive.
3. Take a short test drive: Drive slowly at first and gradually increase your speed to ensure the brakes are working correctly.

Post-Installation Maintenance

• Regular brake fluid checks: Check your brake fluid level regularly and top it off if necessary.
• Brake pad inspection: Inspect your brake pads every 6-12 months or 5,000-10,000 miles.

Information You Need to Know

Q: How do I know if my brake pads need replacement?

A: You’ll likely notice a high-pitched squealing or grinding noise when you apply the brakes, indicating that the pads are worn down. You may also feel a vibration in the brake pedal.

Q: Can I use any type of brake pads for my Mazda CX-5?

A: No, it’s important to use brake pads specifically designed for your Mazda CX-5 model year. Using the wrong pads can affect braking performance and potentially damage your brake system.

Q: How often should I replace my brake pads?

A: The lifespan of brake pads varies depending on driving habits and conditions. Typically, they should be replaced every 25,000-50,000 miles.

Q: Is it safe to drive with worn brake pads?

A: No, driving with worn brake pads is extremely dangerous. If your brake pads are worn down, you may not be able to stop your car effectively in an emergency.

Q: What are brake shims, and why are they important?

A: Brake shims are thin metal plates placed behind the brake pads to reduce noise and vibration. They help to ensure smooth and quiet braking.

By following these steps and prioritizing safety, you can confidently change your rear brake pads on your Mazda CX-5. Remember, it’s always a good idea to consult your owner’s manual for specific instructions and torque specifications for your model year. If you’re unsure about any part of the process, it’s best to seek assistance from a qualified mechanic.