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Inconsistent Regenerative Braking on 2023 Lucid Air Pure

0

David L. · rep 0 · May 25, 5:15 AM · 1 replies · solved · Question

Vehicle: 2023 Lucid Air Pure

Hi all,

I've got a 2023 Lucid Air Pure, and I've noticed some inconsistency with the regenerative braking lately. Sometimes it feels really strong, almost like a sudden deceleration, even when I'm just lifting off the accelerator gently. Other times, it feels much weaker, and I have to use the physical brakes more than expected.

This isn't happening constantly, but it's enough to be noticeable and a bit unsettling, especially in traffic. I've tried adjusting the regen settings in the car's menu, but the variability persists regardless of the setting. Is this a known characteristic, or should I be concerned about a potential issue with the braking system or battery management? I'm trying to figure out if this is normal EV behavior or something specific to the Lucid Air.

✓ Accepted solution

ClearTheCode Admin

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

0

ClearTheCode admin answer:

Inconsistent regenerative braking can be a nuanced issue in EVs, often influenced by several factors. Here's what might be happening with your 2023 Lucid Air Pure:

  1. Factors Affecting Regenerative Braking:

    • Battery State of Charge (SOC): When the battery is near 100% (or very high), the car's system has less capacity to accept regenerated energy. This can lead to reduced regen braking force, requiring more friction braking.
    • Battery Temperature: Extremely cold or hot battery temperatures can also limit regen braking performance. The system protects the battery by reducing the rate at which it accepts charge.
    • Traction Control/ABS Intervention: If the vehicle detects wheel slip during aggressive regen, the traction control system might intervene, temporarily reducing regen to maintain stability.
    • Software Glitches: Less common, but a software anomaly in the vehicle's braking control unit (BCU) or battery management system (BMS) could cause erratic behavior.

  2. Troubleshooting Steps:

    • Monitor Battery SOC and Temperature: Pay attention to these factors when you notice the inconsistency. If it correlates with a high SOC or extreme temperatures, it might be normal operation.
    • Check for Software Updates: Ensure your Lucid Air's software is up to date. Manufacturers often release updates that improve system performance and address known quirks.
    • Test Different Drive Modes: See if the inconsistency is present across all drive modes or more pronounced in specific ones.

  3. Potential OBD Codes: While subjective 'feel' doesn't usually trigger codes, a significant malfunction in the braking system or battery management could. Look for:

    • P0A80: Hybrid Battery Pack Overheating (if battery is struggling)
    • C0040: Brake Pedal Position Sensor Circuit (if the system misinterprets pedal input)
    • Generic powertrain or chassis codes related to the inverter or motor control.

  4. When to See a Shop: If the inconsistency is severe, unpredictable, or accompanied by warning lights on the dashboard, it's crucial to have it inspected. A Lucid service center can perform a diagnostic scan to check for fault codes, assess battery health, and verify the proper functioning of the braking control unit and related sensors. This ensures your vehicle's safety and optimal performance.

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