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Spongy Brake Pedal on 2022 Ram 1500 - Time for a Fluid Flush?

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Ashley M. · rep 0 · May 22, 3:36 AM · 1 replies · solved · Question

Vehicle: 2022 Ram 1500 Laramie

Hi all,

I've got a 2022 Ram 1500 Laramie with about 30,000 miles on it. Lately, the brake pedal feels a bit spongy, not as firm as it used to be, especially after some heavier braking. It's not going to the floor, and I don't hear any grinding, but the confidence isn't there.

I haven't had the brake fluid changed yet. Is 30,000 miles or two years a good time to flush the brake fluid on these trucks? Could old fluid be causing this spongy pedal feel, or should I be looking at something else like air in the lines or even a master cylinder issue?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:36 AM

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ClearTheCode admin answer:

A spongy brake pedal on your 2022 Ram 1500 at 30,000 miles is a concern that warrants immediate attention. While 30,000 miles might seem early for some brake issues, brake fluid maintenance is often overlooked and can certainly contribute to a soft pedal.

Here's what to consider:

  1. Brake Fluid's Nature: Brake fluid is hygroscopic, meaning it absorbs moisture from the air over time. Water in the brake fluid lowers its boiling point. When brakes get hot (e.g., during heavy braking), this water can boil and turn into vapor. Vapor is compressible, unlike fluid, leading to a spongy or soft pedal feel.
  2. Maintenance Interval: Ram (and most manufacturers) typically recommend a brake fluid flush every 2-3 years or 30,000-45,000 miles, whichever comes first. At two years and 30,000 miles, your truck is definitely due for a fluid flush.
  3. Air in the Lines: Air can enter the brake system through various means (e.g., a loose fitting, a failing component, or improper bleeding after a repair). Like water vapor, air is compressible and will cause a spongy pedal.
  4. Other Components:
    • Master Cylinder: A failing master cylinder can cause internal leaks, leading to a spongy pedal or the pedal slowly sinking to the floor.
    • Brake Calipers/Wheel Cylinders: Leaking calipers or wheel cylinders can introduce air or reduce hydraulic pressure.
    • Brake Hoses: Swelling or deteriorating rubber brake hoses can expand under pressure, leading to a soft pedal.

DIY Steps (with caution):

  • A brake fluid flush can be a DIY task if you have the right tools (e.g., a pressure bleeder or a friend to help pump the pedal) and knowledge of the correct bleeding sequence for your vehicle. Use only DOT 3 or DOT 4 fluid as specified in your owner's manual.

When to see a shop:

  • If a brake fluid flush and proper bleeding do not resolve the spongy pedal.
  • If you notice any fluid leaks around the wheels or master cylinder.
  • If the pedal sinks slowly to the floor, which is a strong indicator of a master cylinder issue.
  • For a thorough inspection of all brake components, including calipers, hoses, and the master cylinder, to rule out more serious mechanical failures. Brake system issues are critical for safety and should not be ignored.
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