What is this noise from outside my Cybertruck?

[Uzi05]

I’ve been hearing a high-pitched whine or screech coming from outside my truck, especially when I’m accelerating or slowing down below 30 miles per hour. It’s most noticeable during these moments.

I’ve got a service appointment booked in two weeks to get it checked out, but I wanted to see if anyone else has had a similar experience.

I’m familiar with the normal electrical motor whine and noise, but this doesn’t sound like that.

What do you all think?

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[Tesstudio]

It sounds like you're dealing with an unusual sound that could have a few different causes. Given that you’re familiar with the normal electric motor whine, here are a few possibilities for that high-pitched screech or whine:

1. Brake Regeneration or Pads: Sometimes, a high-pitched noise can come from the brake pads or regenerative braking system. If the pads are worn down, or if there’s debris caught in the brake components, it can cause squealing or screeching. It may be more noticeable when slowing down, especially under 30 mph.
2. Tire Noise: Depending on the type of tires you're using, they might generate high-pitched noises, especially at lower speeds. Tires with aggressive tread patterns can sometimes cause squealing, particularly when driving at slower speeds or while turning.
3. Wheel Bearings or Suspension: Another possibility is an issue with the wheel bearings or something in the suspension system. These components can sometimes make high-pitched noises when they're worn out or not properly lubricated.
4. Aerodynamic Noise: Given the Cybertruck’s unique design, it’s also possible that the sound is related to aerodynamics. High-speed airflow over certain parts of the truck (like the mirrors or the front grill area) could potentially cause a whine or screech that’s noticeable at lower speeds.
5. Drive Unit or Motor: Although you mentioned that you're familiar with the usual electric motor whine, there could be something specific to the drive unit or motor causing this noise at lower speeds, like an issue with the bearings or components inside the motor.

Since you already have a service appointment, it’s great that Tesla will be checking it out. In the meantime, if the noise gets louder or more frequent, it might help to give them more details about when and how the sound occurs.


It’s always a bit concerning when something out of the ordinary happens, but many of these issues are fixable!