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High-pitched whine from 2023 Air Pure motors under acceleration

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

Vehicle: 2023 Lucid Air Pure

Hello Lucid owners, I'm experiencing a new issue with my 2023 Lucid Air Pure, which has around 15,000 miles. When I accelerate, especially between 20-50 mph, I hear a distinct high-pitched whine coming from what sounds like the front motor. It wasn't there before and is quite noticeable now.

It's not a constant sound; it seems to be related to motor load and speed. It's different from the usual futuristic hum. I'm concerned it might be an early sign of a motor or gearbox issue.

Has anyone else encountered a similar whining or grinding noise from their Lucid's electric motors? What was the diagnosis if you took it to service?

✓ Accepted solution

ClearTheCode Admin

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

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ClearTheCode admin answer:

Unusual noises from the drivetrain are always a cause for concern in an EV. Here's what could be happening with your 2023 Lucid Air Pure:

Possible Causes:

  1. Electric Motor Bearings: Over time, the bearings within an electric motor can wear out, leading to whining or grinding noises, especially under load. This is a common point of failure for any rotating machinery.
  2. Gear Reduction Unit: EVs use a single-speed gear reduction unit to transfer power from the motor to the wheels. Issues with the gears, bearings, or lubrication within this unit can produce audible whines or hums.
  3. Inverter/Power Electronics: While less common for a mechanical-sounding whine, sometimes issues with the inverter (which converts DC battery power to AC for the motor) can manifest as high-frequency noises, although these are typically more electronic in nature.
  4. Loose Components: Less likely to be a high-pitched whine, but sometimes loose shields or components near the motors could vibrate and create noise.

When to See a Shop:

Any new, persistent, or worsening noise from the drivetrain warrants immediate attention. Continuing to drive with a potential bearing or gear issue could lead to more significant and costly damage.

Diagnostics:

  • A service technician will typically perform a road test to pinpoint the source of the noise.
  • They will inspect the motors and gear reduction units for any visible damage or leaks.
  • Diagnostic scans for OBD codes related to motor control, inverter performance, or drivetrain faults (e.g., P0A3F - Drive Motor A Inverter Performance, P0A27 - Drive Motor A Temperature Sensor Circuit) will be conducted. Even without a check engine light, latent codes might be present.
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