Hey Subaru enthusiasts! Today, we're diving into the world of rear brakes on the 2012 Subaru Impreza. Whether you're experiencing squealing, grinding, or just want to ensure your ride is safe, understanding your rear brakes is crucial. We'll cover everything from inspection to replacement, providing you with a comprehensive guide to keep your Impreza stopping smoothly.

Understanding Your 2012 Subaru Impreza's Rear Brakes

The rear brakes on your 2012 Subaru Impreza play a vital role in the overall braking system. While the front brakes typically handle the majority of the stopping power due to weight transfer during braking, the rear brakes provide essential stability and contribute to shorter stopping distances. The rear brakes work in tandem with the front brakes to ensure that your vehicle stops safely and evenly. Understanding how your rear brakes function is the first step in properly maintaining them. Ignoring signs of wear or damage can lead to more serious problems, affecting your vehicle's handling and safety. So, let's delve into the specifics of the rear braking system of your 2012 Impreza. It's not just about stopping; it's about doing it safely and efficiently. Regular inspections and timely replacements are key to maintaining optimal braking performance and preventing costly repairs down the road. Keep an eye (and ear!) out for any unusual noises or changes in braking feel, and don't hesitate to address them promptly. After all, your safety and the safety of others on the road depend on it. We'll explore the components of the rear braking system and how they work together to bring your Impreza to a halt, so you can appreciate the mechanics behind those stops. Remember, a little knowledge goes a long way in keeping your ride running smoothly and safely for years to come.

Signs Your Rear Brakes Need Attention

Recognizing the signs that your 2012 Subaru Impreza's rear brakes need attention is paramount for safety and preventing further damage. Here are some key indicators to watch out for: Squealing or grinding noises when braking are often the first and most obvious signs. Squealing typically indicates worn brake pads, while grinding suggests that the pads have worn down completely, and the metal backing is rubbing against the rotor. Ignoring these noises can lead to damage to the rotors, requiring more extensive and costly repairs. Another sign is a decrease in braking performance. If you notice that it takes longer to stop or that the brake pedal feels spongy or soft, it could indicate a problem with the rear brakes. This could be due to worn brake pads, air in the brake lines, or a leak in the brake system. Pay attention to any unusual vibrations or pulsations when applying the brakes. These vibrations could be caused by warped rotors or uneven wear on the brake pads. Warped rotors can significantly reduce braking efficiency and should be addressed promptly. Also, keep an eye on the brake fluid level. A low brake fluid level can indicate a leak in the brake system, which can affect the performance of both the front and rear brakes. Regularly check the brake fluid reservoir and top it off as needed. Finally, be aware of the brake warning light on your dashboard. This light illuminates when there is a problem with the braking system, such as low brake fluid or a malfunctioning sensor. If the brake warning light comes on, have your vehicle inspected by a qualified mechanic as soon as possible. By being vigilant and paying attention to these signs, you can catch potential brake problems early and prevent them from escalating into more serious issues. Regular inspections and proactive maintenance are crucial for ensuring the safety and reliability of your 2012 Subaru Impreza's braking system.

Tools and Materials You'll Need

Before you begin inspecting or replacing your 2012 Subaru Impreza's rear brakes, it's essential to gather all the necessary tools and materials. Having everything on hand will make the process smoother and more efficient. Here's a comprehensive list to get you started: First, you'll need a jack and jack stands. These are crucial for safely lifting and supporting your vehicle. Never work under a vehicle supported only by a jack. Always use jack stands for safety. Next, you'll need a wheel wrench to remove the lug nuts and take off the wheels. A socket set is also essential for various bolts and fasteners you'll encounter during the brake inspection and replacement process. Make sure the set includes the appropriate sizes for your Impreza. A brake caliper tool is specifically designed to compress the brake caliper piston, which is necessary to install new brake pads. Using the correct tool will prevent damage to the caliper. You'll also need new brake pads that are specifically designed for your 2012 Subaru Impreza. Choose high-quality brake pads for optimal performance and longevity. If your rotors are worn or damaged, you'll also need new brake rotors. Inspect the rotors carefully for signs of wear, such as grooves, cracks, or excessive rust. Brake cleaner is essential for cleaning the brake components and removing dirt, grease, and debris. Use it liberally to ensure a clean work surface. You'll also need brake fluid that meets the specifications for your 2012 Subaru Impreza. Check your owner's manual for the correct type of brake fluid. A turkey baster or syringe is helpful for removing old brake fluid from the brake fluid reservoir. This is necessary before pushing the caliper piston back into the caliper. A torque wrench is essential for tightening the lug nuts and other fasteners to the correct specifications. This will prevent over-tightening or under-tightening, which can be dangerous. Finally, don't forget gloves and safety glasses to protect your hands and eyes from dirt, grease, and brake dust. By gathering all these tools and materials beforehand, you'll be well-prepared to tackle the rear brake inspection and replacement on your 2012 Subaru Impreza.

Step-by-Step Guide to Inspecting Your Rear Brakes

Inspecting your 2012 Subaru Impreza's rear brakes is a straightforward process that can save you time and money by catching potential problems early. Here's a step-by-step guide to help you through the process: First, gather your tools. You'll need a jack, jack stands, a wheel wrench, a flashlight, and a measuring tool (such as a ruler or caliper). Loosen the lug nuts on the rear wheels. Use the wheel wrench to loosen the lug nuts, but don't remove them completely yet. This is easier to do while the wheels are still on the ground. Raise the vehicle and secure it with jack stands. Place the jack under the designated jacking points on the rear of the vehicle and raise it until the wheels are off the ground. Then, place jack stands under the frame rails for support. Never work under a vehicle supported only by a jack. Remove the wheels. Finish removing the lug nuts and carefully take off the wheels. Set them aside in a safe place. Inspect the brake pads. Use a flashlight to examine the brake pads. Look for signs of wear, such as thinness, cracks, or uneven wear. Measure the thickness of the brake pads using a ruler or caliper. If the pads are worn down to 3mm or less, they need to be replaced. Inspect the brake rotors. Examine the brake rotors for signs of wear, such as grooves, cracks, or excessive rust. Run your finger across the surface of the rotor to feel for any irregularities. If the rotors are severely damaged, they need to be replaced. Inspect the brake calipers. Check the brake calipers for leaks or damage. Look for signs of brake fluid leakage around the caliper seals and hoses. Also, inspect the caliper mounting bolts to ensure they are tight. Inspect the brake lines. Examine the brake lines for cracks, leaks, or corrosion. Pay close attention to the flexible brake hoses, as they are more prone to damage. Reinstall the wheels. Carefully reinstall the wheels and tighten the lug nuts by hand. Then, lower the vehicle and use a torque wrench to tighten the lug nuts to the correct specifications. Test the brakes. After inspecting the brakes, take the vehicle for a short test drive to ensure that the brakes are functioning properly. Listen for any unusual noises and pay attention to the feel of the brake pedal. By following these steps, you can thoroughly inspect your 2012 Subaru Impreza's rear brakes and identify any potential problems before they become more serious. Regular inspections are key to maintaining the safety and reliability of your vehicle's braking system.

Step-by-Step Guide to Replacing Your Rear Brakes

Replacing the rear brakes on your 2012 Subaru Impreza can seem daunting, but with the right tools and a bit of patience, it's a manageable DIY project. Here's a detailed, step-by-step guide to walk you through the process: Before you begin, make sure you've completed the inspection steps outlined above to confirm that replacement is necessary. Gather your tools and materials. Refer to the list in the "Tools and Materials You'll Need" section above to ensure you have everything on hand. Loosen the lug nuts on the rear wheels. Use the wheel wrench to loosen the lug nuts, but don't remove them completely yet. Raise the vehicle and secure it with jack stands. Place the jack under the designated jacking points on the rear of the vehicle and raise it until the wheels are off the ground. Then, place jack stands under the frame rails for support. Remove the wheels. Finish removing the lug nuts and carefully take off the wheels. Set them aside in a safe place. Remove the brake caliper. Locate the bolts that hold the brake caliper to the caliper bracket. Remove these bolts and carefully slide the caliper off the rotor. Be careful not to damage the brake hose. If the caliper is stuck, you may need to gently pry it off with a screwdriver. Remove the old brake pads. Slide the old brake pads out of the caliper bracket. Note the position of the shims and clips, as you'll need to reinstall them in the same way. Compress the caliper piston. Use a brake caliper tool to compress the caliper piston back into the caliper. This will create enough space to install the new brake pads. Install the new brake pads. Slide the new brake pads into the caliper bracket, making sure to reinstall the shims and clips in the correct positions. Reinstall the brake caliper. Carefully slide the caliper back onto the rotor and align it with the caliper bracket. Reinstall the caliper bolts and tighten them to the correct specifications. Repeat on the other side. Follow the same steps to replace the brake pads on the other rear wheel. Bleed the brakes. After replacing the brake pads, it's essential to bleed the brakes to remove any air from the brake lines. Use a brake bleeder kit or have someone pump the brake pedal while you open and close the bleeder screw on each caliper. Reinstall the wheels. Carefully reinstall the wheels and tighten the lug nuts by hand. Then, lower the vehicle and use a torque wrench to tighten the lug nuts to the correct specifications. Test the brakes. After replacing the brakes, take the vehicle for a short test drive to ensure that the brakes are functioning properly. Listen for any unusual noises and pay attention to the feel of the brake pedal. By following these steps carefully, you can successfully replace the rear brakes on your 2012 Subaru Impreza. Remember to always prioritize safety and consult a qualified mechanic if you're unsure about any part of the process.

Tips for Maintaining Your 2012 Subaru Impreza's Brakes

Maintaining your 2012 Subaru Impreza's brakes is crucial for safety and extending the life of your braking system. Here are some valuable tips to help you keep your brakes in top condition: Regular Inspections: As we've emphasized throughout this guide, regular inspections are key. Check your brake pads, rotors, and brake fluid level regularly. Look for signs of wear, damage, or leaks. Addressing small issues early can prevent them from turning into major problems. Proper Driving Habits: Avoid aggressive driving habits such as hard braking and rapid acceleration. These habits can put unnecessary strain on your brakes and cause them to wear out more quickly. Smooth, controlled driving will help extend the life of your brakes. Use the Correct Brake Fluid: Always use the brake fluid that is recommended for your 2012 Subaru Impreza. Using the wrong type of brake fluid can damage the brake system and reduce its effectiveness. Check your owner's manual for the correct type of brake fluid. Flush the Brake Fluid Regularly: Brake fluid absorbs moisture over time, which can lead to corrosion and reduced braking performance. It's recommended to flush the brake fluid every two to three years, or as specified in your owner's manual. Keep the Brakes Clean: Regularly clean your brakes to remove dirt, dust, and debris. Use a brake cleaner to spray the brake components and remove any buildup. This will help prevent premature wear and ensure optimal braking performance. Address Noises Promptly: Don't ignore any unusual noises coming from your brakes, such as squealing, grinding, or clicking. These noises can indicate a problem with the brake pads, rotors, or calipers. Have your brakes inspected by a qualified mechanic as soon as possible. Lubricate Moving Parts: Keep the moving parts of the brake system lubricated to prevent sticking and binding. Use a high-quality brake lubricant on the caliper slide pins and other moving parts. Replace Worn Components: Don't wait until your brakes are completely worn out before replacing them. Replace worn brake pads and rotors as soon as they reach the minimum thickness specifications. By following these tips, you can help maintain your 2012 Subaru Impreza's brakes and ensure that they provide safe and reliable stopping power for years to come. Remember, proactive maintenance is the key to keeping your vehicle in top condition.

By following this comprehensive guide, you should be well-equipped to handle the rear brakes on your 2012 Subaru Impreza. Remember, safety first! If you're ever unsure about any step, don't hesitate to consult a professional mechanic.