Mercedes-Benz 400E Shakes When Braking

Common Causes of Brake Shaking in Your Mercedes-Benz 400E and How to Resolve Them

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Reviewed by
Devin Cabugcal
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 Mercedes-Benz 400E 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 Mercedes-Benz 400E

When addressing the shaking experienced while braking in your Mercedes-Benz 400E, it's crucial to adopt a methodical diagnostic approach. Start by inspecting the brake rotors, as warped or damaged rotors are a common culprit for vibrations during braking. To check for warping, you can lift the vehicle and spin the wheels, observing for any irregularities in movement. Next, examine the tires for uneven wear or damage, as these can also contribute to shaking. Ensure that the tire pressure is at the recommended levels, as under-inflated or over-inflated tires can exacerbate the problem. Following this, assess the suspension and steering components for any signs of wear or play, particularly in the wheel bearings and control arms. If these initial checks do not reveal the issue, it may be necessary to delve deeper into the drivetrain systems. By systematically evaluating these components, you can effectively pinpoint the source of the shaking and take appropriate corrective measures, ensuring a safer and smoother driving experience.

What Causes Shaking When Braking in a Mercedes-Benz 400E?

When your Mercedes-Benz 400E experiences shaking during braking, it can be attributed to several common problems that DIYers should be aware of. One of the primary culprits is warped or damaged brake rotors, which can occur due to regular wear and tear over time. As the rotors thin out, they become more prone to warping, leading to uneven surfaces that cause pulsating sensations when the brake pads make contact. Additionally, worn brake pads can exacerbate this issue, as they may not grip the rotor evenly. Other potential causes include issues with wheel bearings, which can affect the stability of the vehicle during braking, and problems within the suspension or steering systems that may contribute to the shaking sensation. Tires that are out of balance or have uneven wear can also play a significant role in this problem. Addressing these issues promptly is crucial for maintaining the safety and performance of your vehicle, and a thorough inspection of the brake system and related components can help identify the root cause of the shaking.

Why is My Mercedes-Benz 400E Shaking When Braking?

If your Mercedes-Benz 400E is shaking when you apply the brakes, it’s crucial to address this issue promptly, as it can pose serious safety risks. Ignoring the symptoms may lead to further damage, not only to your braking system but also to other components of your vehicle. The shaking is often indicative of warped brake rotors, which can compromise your ability to stop effectively, increasing the likelihood of accidents. Additionally, continued driving with this problem can lead to uneven wear on your brake pads and other related parts, resulting in costly repairs down the line. Therefore, it’s essential to conduct a thorough inspection of your braking system, focusing on the rotors, pads, and wheel bearings. If you’re comfortable with DIY repairs, consider using a dial indicator to check for rotor warping, but if you’re unsure, seeking professional help is always a wise choice to ensure your safety on the road.

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Mercedes-Benz 400E Shaking When Braking: Causes & Repairs