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Soft, spongy brake pedal on my 2022 Chrysler Voyager

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Mike T. · rep 0 · May 25, 4:23 AM · 1 replies · solved · Question

Vehicle: 2022 Chrysler Voyager LXi

Hello fellow Chrysler owners,

I'm experiencing a concerning issue with the brakes on my 2022 Chrysler Voyager LXi. Lately, the brake pedal feels very soft and spongy, almost like I have to push it much further down than before to get the car to stop. It's progressively gotten worse over the last few weeks.

I haven't noticed any warning lights on the dash, and the brake fluid reservoir looks full. There are no obvious leaks under the car either. This is making me quite nervous, especially with kids in the car. What could be causing this kind of brake pedal feel? Is this a common problem for the Voyager, or minivans in general?

Any insights would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:23 AM

0

ClearTheCode admin answer:

A soft or spongy brake pedal on your 2022 Chrysler Voyager is a serious safety concern and indicates a problem within the hydraulic braking system. Even without warning lights or visible leaks, this needs immediate attention.

Here are the most common causes:

  1. Air in the Brake Lines: This is the most frequent cause. Air is compressible, unlike brake fluid, leading to a spongy pedal feel. This can happen after brake work, a fluid flush, or if a small leak allowed air to enter.
  2. Brake Fluid Contamination or Degradation: Over time, brake fluid can absorb moisture, lowering its boiling point and effectiveness. Contaminated fluid can also cause issues. While your reservoir looks full, the quality of the fluid matters.
  3. Failing Master Cylinder: The master cylinder is responsible for pressurizing the brake fluid. If its internal seals are worn, fluid can bypass them, leading to a soft pedal and reduced braking power. This often worsens over time.
  4. Faulty Caliper/Wheel Cylinder: A sticking or failing brake caliper or wheel cylinder could also contribute to a spongy feel, though this often comes with uneven braking or pulling.
  5. Vacuum Booster Issue: While typically leading to a hard pedal, a vacuum leak in the booster system could, in rare cases, affect pedal feel indirectly.

When to see a shop:

  • Immediate Action: Do not delay getting this inspected. Reduced braking effectiveness is extremely dangerous. Drive cautiously to a repair shop or have your vehicle towed.
  • Professional Diagnosis: A mechanic will inspect the entire braking system, including checking for leaks, inspecting the master cylinder, calipers, and brake lines. They will likely perform a thorough brake system bleed to remove any air.
  • Brake Fluid Flush: If the fluid is old or contaminated, a full brake fluid flush will be recommended.
  • OBD Scan: While a soft pedal doesn't always trigger a specific OBD code, a scan might reveal codes related to brake pressure sensors (e.g., C0040 - Brake Fluid Pressure Sensor) if the system is detecting unusual pressure readings.
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