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Soft Brake Pedal and Longer Stopping Distance - 2021 Lucid Air Dream Edition

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Mike T. · rep 0 · May 25, 5:15 AM · 1 replies · solved · Question

Vehicle: 2021 Lucid Air Dream Edition

Hey everyone,

I've got a 2021 Lucid Air Dream Edition, and I've started to notice a concerning change in the brake pedal feel. It feels much softer than it used to, and I have to press it down further to get the same braking power. This has also led to what feels like a longer stopping distance, which is quite alarming.

There are no warning lights on the dashboard, and I haven't heard any unusual noises like grinding or squealing. I'm worried about this, especially with such a powerful car. Has anyone experienced a soft brake pedal on their Lucid Air, particularly the Dream Edition? What could be causing this, and is it something I can check myself before taking it to a service center?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 5:15 AM

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ClearTheCode admin answer:

A soft brake pedal and increased stopping distance are serious safety concerns that require immediate attention. Even without warning lights, this indicates a potential issue with your 2021 Lucid Air Dream Edition's braking system. Here's what could be happening:

  1. Primary Causes:

    • Air in the Brake Lines: This is the most common reason for a spongy or soft pedal. Air is compressible, unlike brake fluid, leading to a lack of firm pedal feel. This can happen after brake component replacement or if the fluid level gets too low.
    • Low Brake Fluid Level: A low fluid level, often due to a leak or worn brake pads, can introduce air into the system or reduce hydraulic pressure.
    • Brake Fluid Contamination or Degradation: Over time, brake fluid can absorb moisture, lowering its boiling point and compromising its effectiveness, especially under heavy braking.
    • Master Cylinder Malfunction: The master cylinder is responsible for converting pedal pressure into hydraulic pressure. An internal leak or failure can cause the pedal to feel soft or slowly sink.
    • Caliper or Wheel Cylinder Issues: A stuck caliper piston or a leak in a caliper/wheel cylinder can also lead to reduced braking efficiency and a soft pedal.

  2. What You Can Check (Carefully):

    • Brake Fluid Level: Check the reservoir under the hood. Ensure it's between the MIN and MAX marks. Do NOT open the reservoir if you are unsure or if the car has recently been driven hard, as the fluid can be hot.
    • Visual Leaks: Briefly inspect around the wheels and under the car for any signs of brake fluid leaks. Brake fluid is typically clear to yellowish and has an oily feel.

  3. Potential OBD Codes: While a soft pedal is often mechanical, severe issues could trigger codes related to the electronic braking system:

    • C0040: Brake Pedal Position Sensor Circuit (if the sensor is misreading pedal travel)
    • C0020: ABS Pump Motor Circuit (if the ABS system is compromised)
    • Generic chassis or braking system fault codes.

  4. When to See a Shop: You should immediately schedule service with a Lucid service center. Do not delay, as this is a critical safety issue. Driving with compromised brakes is dangerous. A professional technician will perform a thorough inspection, check for leaks, bleed the brake system, test the master cylinder, and ensure all components are functioning correctly. They will also check the electronic braking system for any fault codes.

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