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2020 Outlander - Soft Brake Pedal and Longer Stopping Distance

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Brittany E. · rep 0 · May 22, 5:33 AM · 1 replies · solved · Question

Vehicle: 2020 Mitsubishi Outlander SEL

Hey everyone,

I've been noticing a really concerning issue with my 2020 Mitsubishi Outlander SEL lately. The brake pedal feels much softer than it used to, and I've definitely had to press it harder and for longer to get the car to stop. It feels like the stopping distance has increased significantly, which is making me pretty nervous, especially in traffic.

This started happening about a week ago and seems to be getting a little worse. There aren't any warning lights on the dash, no ABS light or anything like that. I checked the brake fluid reservoir, and it looks to be at a normal level, but I'm not a mechanic, so I'm not sure what else to look for.

Has anyone else with a 2016-2026 Outlander experienced something similar? What could be causing this? Any advice on what I should check or if this is something I need to get to a shop for immediately?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:33 AM

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A soft brake pedal and increased stopping distance are serious safety concerns that require immediate attention for your 2020 Mitsubishi Outlander SEL. This issue compromises your vehicle's ability to stop safely, putting you and others at risk.

Common causes for a soft brake pedal include air trapped within the brake lines, a failing master cylinder, or a significant brake fluid leak somewhere in the system. A faulty brake booster can also contribute to a spongy feel and reduced braking effectiveness, though it often manifests as a very hard pedal requiring excessive force. While worn brake pads and rotors primarily cause grinding noises and extended stopping distances, they typically don't lead to a soft pedal feel.

Here are some initial checks you can perform:

  1. Check Brake Fluid Level: Locate your brake fluid reservoir under the hood. Ensure the fluid level is between the MIN and MAX lines. If it's low, top it off with the correct DOT-rated fluid for your Outlander and then carefully inspect all visible brake lines, calipers, and hoses for any signs of leakage.
  2. Test Brake Booster: With the engine off, pump the brake pedal several times until it feels firm. Hold the pedal down firmly and then start the engine. The pedal should drop slightly as the booster activates. If it doesn't, the booster might be faulty.
  3. Master Cylinder Check: If the brake pedal slowly sinks to the floor when held under constant pressure, it's a strong indicator of an internal leak within the master cylinder.

When to see a professional: Given the critical safety implications, it is highly recommended to have your vehicle inspected by a qualified mechanic immediately. They can perform a comprehensive diagnostic, including pressure tests, a thorough inspection for leaks, and proper bleeding of the brake system to remove any trapped air. While a soft pedal itself might not always trigger a specific OBD-II code, a mechanic can check for general brake system codes (e.g., related to ABS or traction control, like C0031-C0038 for wheel speed sensors or C0040 for a critically low brake fluid level sensor) that could indirectly point to the root cause. Do not delay addressing any brake system issues.

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