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2023 Lucid Air Grand Touring - Sudden Power Loss and Reduced Range

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Angela R. · rep 0 · May 22, 7:28 AM · 1 replies · solved · Question

Vehicle: 2023 Lucid Air Grand Touring

Hey everyone,

I'm experiencing a really concerning issue with my 2023 Lucid Air Grand Touring. Yesterday, while driving on the highway, I suddenly felt a significant reduction in power. The car wouldn't accelerate past about 50 mph, and a warning light came on, though I didn't catch the exact message before it cleared briefly.

Since then, the estimated range has dropped dramatically, and the car feels sluggish even at lower speeds. It's like the motors aren't getting full power. I've tried restarting the car a couple of times, but the issue persists. I'm worried about driving it much further.

Has anyone else with a Lucid Air experienced anything similar? Could this be a battery issue, or maybe something with the motor inverter? Any advice on what I should check or if there's a common fix before I take it to a service center would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 7:28 AM

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ClearTheCode admin answer:

It sounds like your 2023 Lucid Air Grand Touring is experiencing a significant issue related to its high-voltage powertrain, which requires prompt attention. Sudden power loss and reduced range in an EV typically point to a fault within the electric propulsion system.

Here's a breakdown of potential causes and what to do:

  1. Potential Causes:

    • Battery Management System (BMS) Fault: The BMS monitors the health, temperature, and charge of the battery cells. A fault here could trigger a 'limp mode' to protect the battery, reducing available power and range. This could be due to a sensor malfunction, cell imbalance, or an internal component failure.
    • Motor Inverter/Controller Malfunction: The inverter converts the DC power from the battery into AC power for the electric motors. A fault in this component can directly lead to reduced motor performance or complete power loss.
    • High Voltage (HV) Contactor Issues: These are large relays that connect and disconnect the high-voltage battery from the rest of the vehicle's electrical system. If one fails or becomes sticky, it can interrupt power flow.
    • Thermal Management System Failure: Overheating of the battery or electric motors can cause the vehicle to limit power to prevent damage. A fault in the cooling system could be the root cause.
    • Software Glitch: While less common for such severe symptoms, a software bug could sometimes cause erroneous readings or system limitations.

  2. Initial Troubleshooting (Limited):

    • Check for Specific Warning Messages: Pay close attention to any messages displayed on your infotainment screen or driver's display. Lucid's system will often provide more specific details about the fault (e.g., "Powertrain Malfunction," "Reduced Performance").
    • Note Conditions: Remember the exact conditions when the issue occurred (speed, battery SoC, ambient temperature, recent charging history). This information will be vital for technicians.
    • Avoid Repeated Hard Driving: Do not attempt to push the vehicle or repeatedly test its limits, as this could exacerbate the problem or cause further damage.

  3. When to See a Shop (Lucid Service Center):

    • Immediately: Given the severity of sudden power loss and persistent range reduction, it is strongly recommended to contact Lucid Service as soon as possible. This is not a problem that typically resolves itself or can be fixed with simple user intervention.
    • Diagnostic Codes: Your Lucid Air's onboard diagnostic system will have logged specific Diagnostic Trouble Codes (DTCs) related to the fault. These are proprietary to Lucid and require their specialized diagnostic tools to read accurately. These codes will pinpoint the exact component or system that is malfunctioning, such as a P0Axx or P1Axx series code indicating a high-voltage system fault.

Driving with a significant powertrain fault can be unsafe and potentially lead to further damage. Contact Lucid Roadside Assistance if you are not comfortable driving the vehicle to a service center.

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