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Unusual Whining Noise from Front Motor on 2023 Air Touring

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Mike T. · rep 0 · May 25, 5:14 AM · 1 replies · solved · Question

Vehicle: 2023 Lucid Air Touring

Hi all,

I've noticed a new, high-pitched whining noise coming from the front end of my 2023 Lucid Air Touring. It's most noticeable at low speeds (0-30 mph) and seems to get louder under light acceleration. It's not the typical EV 'whine' – this sounds more mechanical and concerning.

I've checked for any obvious debris, but haven't found anything. Could this be an issue with the front electric motor, a bearing, or perhaps the single-speed gearbox? The car drives fine otherwise, with no warning lights.

Any insights or similar experiences would be greatly appreciated. I'm trying to figure out if this is something I need to get into service immediately for.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 5:14 AM

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ClearTheCode admin answer:

A whining noise under acceleration, especially at low speeds, can indeed be a sign of a mechanical issue within the drivetrain of your 2023 Lucid Air Touring. Here’s what could be happening:

1. Diagnostics & Common Causes:

  • Electric Motor Bearings: The bearings within the electric motor can wear out over time, leading to a distinct whining or grinding noise. This is one of the more common sources of such sounds in EVs.
  • Single-Speed Gearbox/Reducer: EVs use a single-speed reduction gear to transmit power from the motor to the wheels. Issues with the gears themselves, bearings within the gearbox, or insufficient lubrication can cause significant noise. This is often more pronounced under load.
  • Half-Shaft/CV Joint: While less common for a 'whining' sound, a failing Constant Velocity (CV) joint or half-shaft could produce various noises, including clicking or whirring, that might be mistaken for a whine.
  • Motor Inverter Coil Whine: In some cases, the inverter itself can produce a high-frequency whine, but this is usually a characteristic sound rather than a fault, unless it changes suddenly or becomes excessively loud.

2. What to Check/Do:

  • Listen Carefully: Try to pinpoint the exact location of the sound. Is it louder from the driver's side or passenger's side front? Does it change with speed, or only with acceleration?
  • Check for Vibrations: While driving, note if you feel any unusual vibrations through the steering wheel or floorboards, which could indicate a rotating component issue.
  • No OBD Codes Expected: Mechanical noises from bearings or gears typically do not trigger OBD-II diagnostic trouble codes directly, as the electrical system might still be functioning within parameters.

3. When to See a Shop:

  • Prompt Inspection: Any new, unusual mechanical noise from the drivetrain should be investigated promptly. While it might not be an immediate safety hazard if no warning lights are present, continued driving with a failing bearing or gear can lead to more extensive and costly damage.
  • Lucid Service Center: Schedule an appointment with a Lucid service center. They have specialized listening tools and diagnostic procedures to identify the source of drivetrain noises. Clearly describe when and how the noise occurs, as this information is vital for technicians.
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