Hey guys! So, you're here because you're having some trouble with the 2012 Subaru Impreza's rear brakes, huh? No worries, you've come to the right place. We're going to dive deep into everything you need to know about keeping those stoppers in tip-top shape. From understanding the basics to troubleshooting common issues and even tackling some DIY repairs, we'll cover it all. Trust me, keeping your brakes in good working order is super important for your safety and the safety of everyone else on the road. Let's get started!

Understanding Your 2012 Subaru Impreza Rear Brakes

Alright, before we jump into the nitty-gritty of repairs, let's get a handle on how your 2012 Subaru Impreza's rear brake system actually works. The rear brakes on your Impreza, like most cars, are responsible for a significant portion of your stopping power, though the front brakes usually handle a bit more of the heavy lifting. The rear brakes primarily consist of brake pads, rotors (or drums, depending on the trim level – more on that later), a caliper, and a parking brake mechanism. When you press the brake pedal, hydraulic pressure is sent from the master cylinder (up front) through the brake lines to the rear calipers. This pressure forces the brake pads against the rotors, creating friction that slows your wheels down.

Now, the parking brake, also known as the emergency brake, is a separate system that usually engages the rear brakes mechanically. This is typically done with a cable system that pulls on the brake pads or shoes when you activate the parking brake lever or pedal. It's crucial to understand how these systems work because it helps you diagnose problems more effectively. For example, if your parking brake isn't holding, you know there might be an issue with the cable, the brake shoes (if it's a drum brake setup), or the caliper itself. Common issues with rear brakes can range from worn-out pads causing squealing or grinding noises to rotors warping, which leads to pulsating brake pedal feel. Calipers can also seize up due to corrosion, causing the pads to drag against the rotor and creating excessive heat, potentially leading to brake failure. Knowing these components and their functions is the first step in properly maintaining your 2012 Subaru Impreza's rear brake system. That will help you understand what's going on when things go wrong and what to look for when inspecting your brakes. Always prioritize safety when dealing with brakes, and if you're ever unsure about anything, it's always best to consult a qualified mechanic.

The Components of Your Rear Brake System

Let's break down the main players in the rear brake game for your Impreza:

• Brake Pads: These are the friction material that presses against the rotor to stop your car. They wear down over time and need to be replaced.
• Rotors: These are the metal discs that the brake pads clamp down on. They can warp, rust, or develop grooves over time, affecting braking performance. Some Impreza models use drum brakes in the rear, which consist of brake shoes inside a drum.
• Calipers: These hold the brake pads and use hydraulic pressure to push them against the rotor. They can seize or leak fluid.
• Brake Lines and Hoses: These carry the brake fluid to the calipers. They can crack or leak, causing a loss of brake pressure.
• Parking Brake: This uses a separate mechanism (cables or sometimes integrated into the caliper) to apply the rear brakes for parking.

Common Problems with 2012 Subaru Impreza Rear Brakes

Okay, so what can go wrong with the rear brakes on your 2012 Subaru Impreza? Here are some of the most common issues you might encounter:

• Worn Brake Pads: This is probably the most frequent problem. As you use your brakes, the pads wear down. Eventually, they get so thin that they don't provide effective friction and can damage the rotors. You'll usually hear a squealing or grinding noise when the pads are worn down to the wear indicators.

• Warped Rotors: Heat and wear can cause your rotors to warp, leading to a pulsating feeling when you apply the brakes, especially at higher speeds. This is often caused by excessive heat, like from repeated hard braking or riding the brakes.

• Seized Calipers: If a caliper seizes, it means the pistons inside get stuck, preventing the brake pads from releasing properly. This can cause the brakes to drag, leading to reduced fuel economy, excessive heat, and premature wear of the pads and rotors.

• Rust and Corrosion: Over time, rust can build up on the rotors and other brake components, reducing their effectiveness. In areas with a lot of road salt, this can be a significant problem.

• Brake Fluid Leaks: Leaks in the brake lines or calipers can reduce brake pressure, making it harder to stop your car. This is a serious safety concern and needs to be addressed immediately.

• Parking Brake Issues: If your parking brake isn't holding, there could be a problem with the cable, the brake shoes (if equipped), or the caliper mechanism.

Symptoms and What They Mean

Here's a quick rundown of some symptoms you might experience with your 2012 Subaru Impreza's rear brakes, and what they could indicate:

• Squealing or Grinding Noises: Usually means your brake pads are worn down and need replacement.
• Pulsating Brake Pedal: Could be caused by warped rotors.
• Reduced Braking Performance: This could be due to worn pads, leaking fluid, or other issues.
• Car Pulling to One Side: This can indicate a seized caliper or uneven braking force.
• Burning Smell: Often a sign of the brakes overheating, potentially due to a seized caliper or dragging brakes.
• Parking Brake Not Holding: This suggests a problem with the parking brake mechanism.

DIY Repair or Professional Help: Making the Right Choice

So, you've got some problems with your rear brakes – now what? Should you try to fix them yourself, or should you take your 2012 Subaru Impreza to a mechanic? That depends on a few things, like your experience level, the tools you have, and the complexity of the repair. For some of the more basic jobs, like replacing brake pads, you might be able to handle it yourself, especially if you're comfortable working on cars and have some basic tools. But, if you're dealing with more complex issues like seized calipers, brake fluid leaks, or if you're not entirely confident in your abilities, it's always best to seek professional help.

Working on your brakes can be dangerous if you don't know what you're doing. A mistake could compromise your braking system, leading to a serious accident. If you're unsure about any step of the process, it's a good idea to consult a qualified mechanic. Also, keep in mind that brake work often requires specific tools, like a caliper compression tool, a torque wrench, and possibly a brake bleeder. If you don't have these tools, buying them can add to the cost of the repair.

When deciding whether to DIY or go to a mechanic, consider the time investment as well. Repairing brakes can take several hours, especially if you're new to it. If your time is valuable, or if you're in a hurry to get your car back on the road, taking it to a mechanic might be the better option. Professional mechanics have the experience, the tools, and the parts to get the job done quickly and correctly. Plus, they usually offer a warranty on their work, giving you peace of mind. However, if you're on a tight budget and enjoy working on your car, a DIY repair can save you a significant amount of money. Just make sure you research the repair thoroughly, follow all safety precautions, and double-check your work.

When to Call in the Pros

Here's a quick guide to help you decide when to head to the shop:

• Complex Repairs: If you're dealing with seized calipers, brake fluid leaks, or other complex issues, it's best to let a professional handle it.
• Lack of Experience: If you're not comfortable working on cars, or if you've never done brake work before, it's safer to go to a mechanic.
• Lack of Tools: Some brake repairs require specialized tools that you might not have.
• Safety Concerns: If you're unsure about any step of the process, don't risk it!

Step-by-Step: Replacing Rear Brake Pads on Your Impreza (DIY)

Alright, let's say you've decided to tackle a rear brake pad replacement on your 2012 Subaru Impreza (remember, this is a general guide, and specific procedures might vary slightly depending on your car's options). Here’s a general idea of the process. Always consult a repair manual specific to your vehicle for detailed instructions. Disclaimer: Working on your brakes can be dangerous. If you're not comfortable with this procedure, please consult a qualified mechanic.

• Gather Your Supplies: You'll need new brake pads, a set of jack stands, a lug wrench, a socket set, a C-clamp or brake caliper piston tool, brake cleaner, and possibly some anti-seize lubricant.

• Safety First: Park your car on a level surface, engage the parking brake, and chock the front wheels. Loosen the lug nuts on the rear wheels.

• Lift and Support: Use a jack to lift the rear of the car and securely place jack stands under the frame. Never work under a car supported only by a jack.

• Remove the Wheel: Completely remove the lug nuts and take off the wheel.

• Locate the Caliper: Find the brake caliper. It's the metal housing that clamps around the rotor.

• Remove the Caliper: Use a wrench or socket to remove the caliper bolts. The bolts usually have rubber caps on them. Once the bolts are removed, the caliper should come off. You might need to gently pry it off.

• Compress the Piston: Use a C-clamp or brake caliper piston tool to compress the caliper piston back into its housing. This is important to create space for the new, thicker brake pads.

• Remove the Old Pads: Take out the old brake pads. They should slide right out.

• Install the New Pads: Place the new brake pads into the caliper. Make sure they're seated correctly.

• Reinstall the Caliper: Carefully put the caliper back over the new pads and rotor. Reinstall the caliper bolts and tighten them to the manufacturer's specifications.

• Reinstall the Wheel: Put the wheel back on and tighten the lug nuts.

• Lower the Car: Lower the car and remove the jack stands.

• Test the Brakes: Before driving, pump the brake pedal several times to ensure the pads are properly seated. Then, take a short, slow test drive to make sure the brakes are working correctly.

Additional Tips for DIY Brake Jobs

Here are a few extra tips to help your brake pad replacement go smoothly:

• Cleanliness is Key: Use brake cleaner to clean all the brake components, including the rotors and calipers.
• Lubricate as Needed: Apply anti-seize lubricant to the back of the brake pads to prevent squealing.
• Torque to Specs: Always tighten the caliper bolts and lug nuts to the manufacturer's torque specifications. You can find these specs in your owner's manual or a repair manual.
• Inspect Other Components: While you have the brakes apart, inspect the rotors, brake lines, and calipers for any damage or wear.
• Bed the Brakes: After replacing the brake pads, it's essential to “bed” them in. This involves making several stops from moderate speeds to help the pads and rotors seat properly.

Maintaining Your 2012 Subaru Impreza Rear Brakes: The Long Game

To keep your 2012 Subaru Impreza's rear brakes in top condition and avoid costly repairs down the line, here are some maintenance tips:

• Regular Inspections: Have your brakes inspected at least once a year, or every time you change your tires. This allows a mechanic to catch any potential problems early.
• Listen for Noises: Pay attention to any unusual noises, like squealing, grinding, or clicking. These could be early warning signs of brake problems.
• Check for Vibration: If you feel a vibration in the brake pedal, especially when braking at higher speeds, it could indicate warped rotors.
• Monitor Brake Fluid: Check your brake fluid level regularly. If it's low, there could be a leak.
• Use Quality Parts: When replacing brake components, always use high-quality parts from a reputable brand.
• Drive Safely: Avoid aggressive braking and excessive speed, as these can put extra stress on your brakes.
• Professional Service: Consider professional brake service every few years, which can include a brake fluid flush and inspection of all components.

The Importance of Regular Brake Care

Regular maintenance is super important. Think of it like this: your brakes are one of the most critical safety systems in your car. Ignoring them can lead to dangerous situations, like reduced stopping distance or complete brake failure. Regular maintenance not only keeps you safe but also extends the life of your brake components, saving you money in the long run. By following these tips and keeping a close eye on your brakes, you can enjoy peace of mind knowing that your Impreza will stop safely when you need it to.

Conclusion: Keeping Your Brakes in Check

So, there you have it, folks! A complete guide to understanding, maintaining, and repairing the rear brakes on your 2012 Subaru Impreza. Remember, keeping your brakes in good shape is all about safety. Whether you decide to tackle the repairs yourself or take your car to a mechanic, the most important thing is to make sure your brakes are working properly. If you're ever in doubt, consult a professional. Safe driving, and keep those brakes in check! Hopefully, this guide has given you a solid foundation for keeping your Impreza's rear brakes in top condition and keeping you safe on the road. Drive safe and happy wrenching!