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Musty Smell & Reduced AC Flow in My 2020 Model 3 - Cabin Air Filter DIY?

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Kim L. · rep 0 · May 22, 5:27 AM · 1 replies · solved · Question

Vehicle: 2020 Tesla Model 3 Standard Range Plus

Hey everyone,

I've been noticing a persistent musty smell coming from the vents in my 2020 Tesla Model 3 Standard Range Plus lately. It's especially noticeable when I first turn on the AC. On top of that, the airflow doesn't seem as strong as it used to be, even when the fan is cranked up.

I've heard that a clogged cabin air filter can cause these kinds of issues. Is this something I can tackle myself, or should I just take it to a service center? I'm fairly handy, but I've never worked on a Tesla before.

Any tips or guides for replacing the cabin air filter on a 2020 Model 3 would be greatly appreciated! Thanks in advance.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:27 AM

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ClearTheCode admin answer:

Hello Sarah,

You're absolutely right; a musty smell and reduced airflow are classic symptoms of a clogged cabin air filter in your 2020 Tesla Model 3. This is a very common maintenance item and a popular DIY project for Tesla owners.

Causes of the Issue:

  1. Accumulated Debris: Over time, the cabin air filters collect dust, pollen, leaves, and other airborne particles, restricting airflow.
  2. Moisture Buildup: Trapped moisture within the filter media can lead to mold and mildew growth, causing the musty odor.

DIY Cabin Air Filter Replacement Steps: Replacing the cabin air filters in a Tesla Model 3 is a manageable DIY task, though it requires a bit of patience and the right tools. Tesla Model 3s typically use two separate filters.

  1. Gather Supplies: You'll need two new Tesla Model 3 cabin air filters (often available from Tesla or aftermarket suppliers), a trim removal tool, and a T20 Torx screwdriver.
  2. Access the Filters: The filters are located behind the passenger side of the center console. You'll need to remove the passenger side kick panel and then carefully pry off the right-side panel of the center console using your trim removal tool.
  3. Remove Filter Access Panel: Once the console panel is off, you'll see a small access panel secured by a T20 Torx screw. Remove this screw and the panel.
  4. Extract Old Filters: Carefully pull out the old filters. Pay attention to the 'airflow' arrow on the old filters to ensure you install the new ones in the correct orientation.
  5. Install New Filters: Slide the new filters into place, making sure the airflow arrows point towards the rear of the vehicle (or as indicated by the old filters).
  6. Reassemble: Reverse the removal steps to put everything back together. Ensure all clips and screws are securely fastened.

When to See a Shop:

  • If the musty smell persists or worsens after replacing the filters, it could indicate a deeper issue with the HVAC system, such as mold in the evaporator core, which requires professional cleaning.
  • If you're uncomfortable performing the DIY, a Tesla Service Center or a qualified independent shop can perform this service for you.
  • If you notice any unusual noises from the AC system or if the airflow issue isn't resolved, it's best to have a technician diagnose the problem.
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