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Loss of Power and Warning Lights on 2023 Lucid Air Grand Touring

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Rachel A. · 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. While driving on the highway yesterday, I suddenly felt a significant loss of power, and several warning lights illuminated on the dash, including a 'Check Propulsion System' message. The car went into what felt like a 'limp home' mode, barely able to maintain speed.

I managed to get it home, but the performance is severely limited. I tried restarting the car, but the warnings persist. Has anyone else encountered this with their Lucid Air? I'm worried about what this could be, especially with such a new vehicle.

Any advice or similar experiences would be greatly appreciated before I call for service. 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 critical propulsion system fault, which is a serious issue requiring immediate attention. The 'limp home' mode is a safety feature designed to protect the vehicle's components from further damage when a severe fault is detected.

Here's what you should do:

  1. Do Not Drive the Vehicle: Continuing to drive with a 'Check Propulsion System' warning and reduced power can exacerbate the problem or lead to a complete breakdown.
  2. Check for OBD Codes: While Lucid vehicles have advanced diagnostics, a generic OBD-II scanner might pull a basic code like P0A7A (Drive Motor 'A' Inverter Performance) or a similar propulsion system fault. This indicates an issue with the electric motor's inverter, which converts DC power from the battery into AC power for the motor.
  3. Contact Lucid Service Immediately: This type of issue almost certainly requires professional diagnosis and repair by a certified Lucid technician. Do not attempt to troubleshoot complex propulsion system issues yourself.

Potential Causes:

  • Inverter Malfunction: The inverter is a crucial component that controls the electric motor. A fault here can lead to power loss and system warnings.
  • Electric Motor Issue: While less common in newer vehicles, a fault within one of the electric motors (e.g., sensor failure, winding issue) could trigger this.
  • High Voltage Battery System Fault: Problems with the battery management system (BMS) or a high-voltage contactor could also manifest as propulsion system warnings.
  • Software Glitch: In rare cases, a software bug could cause erroneous warnings, but the 'limp home' mode suggests a genuine hardware or critical system fault.

When to See a Shop:

You should arrange for your Lucid Air to be towed to a Lucid service center as soon as possible. Given the nature of the warning and the vehicle's behavior, it's not safe or advisable to drive it. The service center will have specialized diagnostic tools to pinpoint the exact cause, which could range from a faulty sensor or module to a more significant component replacement like an inverter or motor.

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