Subaru Legacy Shakes When Braking

Common Causes of Shaking in Your Subaru Legacy During Braking and How to Resolve Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
55% chance it's the
Brake Rotor
0%
20% chance it's the
Brake Pad
0%
10% chance it's the
Old Brake Fluid
0%
15% chance it's
Something else
The most common reasons a Subaru Legacy shakes when braking are bad brake rotors, bad brake pads, or a bad wheel bearing.
  • Brake Rotor: A warped or worn brake rotor can cause vibrations during braking and reduced stopping power.
  • Brake Pad: A worn or damaged brake pad can lead to reduced braking efficiency and increased stopping distances.
  • Old Brake Fluid: Old brake fluid can absorb moisture over time, leading to reduced braking performance and potential corrosion within the brake system.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

Troubleshooting Shaking When Braking in a Subaru Legacy

When troubleshooting shaking when braking in your Subaru Legacy, start with a visual inspection of the brake components. Check the brake pads for wear; if they appear thin or show signs of damage, replacing them is a straightforward first step. Next, examine the brake rotors for any signs of warping or uneven wear, as these can cause vibrations during braking. If the rotors are smooth and in good condition, inspect the wheel bearings and suspension components, as issues here can also contribute to shaking. Pay attention to the type of vibration you feel; if it’s primarily through the steering wheel, focus on the front brakes, while vibrations felt in the brake pedal may indicate rear rotor issues. If these checks do not resolve the problem, consider consulting a professional mechanic for a more thorough diagnosis, as they can identify less obvious issues that may require specialized tools or expertise. By following this methodical approach, you can effectively narrow down the cause of the shaking and take appropriate action to ensure a safer driving experience.

What Causes Shaking When Braking in a Subaru Legacy?

When your Subaru Legacy experiences shaking during braking, it can be both alarming and indicative of underlying issues that need attention. One of the most frequent causes is worn brake rotors and pads, which can lead to uneven contact and vibrations. If you notice that the steering wheel shakes specifically when you apply the brakes, this is often a sign that the brake rotors are warped or damaged. Another factor to consider is the bedding process of new brake pads; improper bedding with new rotors can result in uneven wear, causing shaking. To remedy this, you may need to install new brake pads and resurface the rotors to ensure a smooth braking surface. Additionally, it's crucial to check the rotor slide pins, as stuck pins can prevent the brake pads from fully retracting, leading to overheating and accelerated wear. By systematically addressing these common problems, you can effectively diagnose and mitigate the shaking issue, ensuring a safer and more comfortable driving experience in your Subaru Legacy.

Why is My Subaru Legacy Shaking When I Brake?

When your Subaru Legacy shakes while braking, it’s crucial to address the issue promptly to ensure your safety on the road. Ignoring this symptom can lead to more severe problems, such as compromised braking performance or even brake failure, which poses a significant risk to you and other drivers. The shaking is often indicative of worn brake rotors or pads, which can become warped over time, especially if you frequently brake hard or drive in hilly areas. Additionally, if the shaking occurs at high speeds, it may suggest that the rotors are unevenly worn, further exacerbating the problem. Beyond the braking system, other factors like wheel alignment, tire condition, and suspension components can contribute to the shaking, making it essential to conduct a thorough inspection. Neglecting these signs not only jeopardizes your safety but can also lead to costly repairs down the line. Therefore, if you notice your Subaru Legacy shaking when you brake, it’s advisable to seek professional assistance to diagnose and resolve the issue before it escalates.

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