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Soft Brake Pedal and Longer Stopping Distance on my 2023 Kia Telluride

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Mike T. · rep 0 · May 25, 2:08 AM · 1 replies · solved · Question

Vehicle: 2023 Kia Telluride SX-Prestige

Hello fellow Telluride owners,

I've run into a concerning issue with my 2023 Kia Telluride SX-Prestige, which only has about 15,000 miles on it. Lately, the brake pedal feels much softer than it used to, almost spongy, and I've noticed that the stopping distance seems to have increased. I have to push the pedal down further to get the same braking power.

There are no warning lights on the dash, and I haven't heard any strange noises from the brakes. I checked the brake fluid reservoir, and it looks to be at a normal level. This is a relatively new vehicle, so I'm a bit surprised to be having brake issues already.

Has anyone else experienced a soft brake pedal on their Telluride? What could be causing this, and what should I do next? Is this something covered under warranty?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:08 AM

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ClearTheCode admin answer:

A soft or spongy brake pedal and increased stopping distance on a relatively new vehicle like your 2023 Kia Telluride SX-Prestige is a serious concern and warrants immediate attention. Even without warning lights, these symptoms indicate a potential compromise in your braking system's integrity.

Common Causes:

  1. Air in the Brake Lines: This is the most common cause of a soft or spongy pedal. Air is compressible, unlike brake fluid, so it prevents the full hydraulic pressure from reaching the calipers.
  2. Failing Master Cylinder: The master cylinder is responsible for converting pedal pressure into hydraulic pressure. If its internal seals are failing, fluid can bypass them, leading to a soft pedal that might slowly sink to the floor.
  3. Brake Fluid Leak: While you mentioned no warning lights, a slow external leak could reduce fluid pressure, leading to a soft pedal. Check for fluid stains around calipers, lines, and the master cylinder.
  4. Contaminated or Old Brake Fluid: Over time, brake fluid can absorb moisture, which lowers its boiling point. If the fluid boils, it creates vapor (gas) in the lines, leading to a spongy pedal. However, this is less likely on a 2023 model unless the fluid was somehow compromised.
  5. Faulty Brake Booster: The brake booster assists in applying braking force. A failing booster can make the pedal feel harder to push, but sometimes can contribute to a strange pedal feel if it's not maintaining consistent vacuum.

When to See a Shop:

Do not delay in having your Telluride inspected by a professional mechanic or a Kia dealership. Compromised braking performance is a significant safety hazard. Since your vehicle is a 2023 model, it is very likely still under the factory warranty (Kia's 5-year/60,000-mile basic warranty or 10-year/100,000-mile powertrain warranty, though brake wear items are typically excluded from the longer warranty). If the issue is a defect in a major component like the master cylinder or a manufacturing flaw, it should be covered.

Recommended Steps:

  1. Immediate Inspection: Schedule an appointment with a Kia dealership or trusted mechanic right away. Explain the symptoms clearly.
  2. Brake System Bleed: The first step a technician will likely take is to bleed the brake system to remove any trapped air.
  3. Master Cylinder Test: If bleeding doesn't resolve the issue, the master cylinder will be tested for internal leaks.
  4. Thorough Leak Check: The entire brake system, including lines, calipers, and the booster, will be inspected for any leaks or damage.
  5. Warranty Claim: If a defective part is identified, ensure the dealership processes it as a warranty claim.
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