Tesla Model 3 & Y Rear View Mirror (2017-2026): Fixing Rattles and Highland Compatibility

Key Compatibility Warning: Pre-Highland vs. 'Highland' Refresh

• 2017-2023 Model 3 & 2020-2026 Model Y: These vehicles share a similar framed, auto-dimming mirror. The Model Y uses the same platform and interior components as the pre-Highland Model 3. Common part numbers include 1119904-00-C and 1494441-00-B.
• 2024-2026 Model 3 'Highland': These vehicles use a newer, frameless auto-dimming mirror with a different mounting design. It is NOT interchangeable with the mirror from earlier Model 3s or any Model Y. Common part numbers for the Highland mirror include 1763336-00-D and 1763337-00-D.

Always verify the part number from your original mirror before purchasing a replacement to ensure compatibility.

Symptoms of a Failing Rear View Mirror

Failures in this part can range from minor annoyances to issues that affect visibility.

1. Rattling or Buzzing Noises

This is the most common complaint from Model 3 and Model Y owners. The noise typically comes from the plastic housing surrounding the mirror and camera assembly, not the mirror itself. It is often more noticeable on rough roads or at certain speeds. Many owners report that pressing on the plastic cover stops the noise temporarily. The cause is often a loose internal component, like an antenna board, or simply the plastic pieces vibrating against each other.

2. Auto-Dimming Malfunction

The electrochromic auto-dimming feature can fail in several ways:

• Bubbles or Discoloration: The seal on the electrochromic gel layer can fail, allowing air to enter. This creates a 'bubble,' a 'lava lamp' look, or a distinct line across the mirror where the gel has separated.
• Leaking Fluid: In severe cases, the corrosive gel can leak from the mirror housing. This fluid can permanently damage interior plastic trim and should be addressed immediately.
• Stuck Dim or Bright: The mirror may fail to dim at night, causing excessive glare, or it may get stuck in a dark state during the day, reducing rear visibility.

3. Loose or Detached Mirror

The mirror itself can become loose and vibrate excessively. This can be due to the ball-and-socket joint popping out or the entire mirror mount becoming detached from the windshield bracket. While less common, this requires immediate attention as it can be a significant distraction and safety hazard.

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

Widespread Issue: Mirror Housing Rattle

While there is no official recall or TSB for the rattling mirror housing, it is a widely documented issue in owner forums. The common DIY solution involves carefully removing the plastic covers and applying felt or foam tape to cushion contact points and secure loose internal components.

Recall Clarification: Rear View CAMERA (NHTSA 25V-002)

In early 2025, Tesla issued a recall (SB-25-00-001 / NHTSA 25V-002) for certain 2024-2025 Model 3 and 2023-2025 Model Y vehicles. This recall is NOT for the physical interior mirror. It addresses an issue where a computer circuit board short could cause the rear-view camera image on the main touchscreen to fail to display. The fix is a free over-the-air (OTA) software update. This issue is unrelated to the physical mirror discussed in this guide.

Buying a Used Interior Rear View Mirror

A used OEM mirror is an excellent, cost-effective option, as aftermarket versions are rare and may lack the proper auto-dimming function. When buying a used part, careful inspection is key.

• Verify Compatibility: This is the most important step. Double-check that the part number is correct for your vehicle, paying close attention to the Pre-Highland vs. Highland Model 3 distinction. A mirror from a 2022 Model 3 will fit a 2021 Model Y, but a mirror from a 2024 'Highland' Model 3 will not.
• Inspect the Glass: Look for any signs of auto-dimming failure. Reject any mirror with bubbles, discoloration, a 'lava lamp' appearance, or any sign of fluid leakage around the edges.
• Check the Housing and Mount: Ensure the plastic housing is not cracked and that all mounting tabs are intact. For pre-Highland models, check that the Torx screw mount is not stripped. For Highland models, ensure the twisting mount mechanism is undamaged.
• Examine the Connector: The electrical connector pins on the back of the mirror should be straight and free of corrosion.

Cost of Replacement

Replacing the interior rear view mirror is relatively inexpensive, especially if you opt for a used part and perform the labor yourself.

Step-by-Step Replacement Guide

Replacing the mirror is a simple DIY task that usually takes less than 20 minutes.

1. Remove the Camera Housing: The large plastic housing behind the mirror is held on by clips. Use a plastic trim removal tool to carefully pry the two halves of the cover apart. Start at the seam and work your way around.
2. Disconnect the Electrical Connector: With the cover off, you will see a small electrical connector plugged into the back of the mirror. Press the tab on the connector and pull it out.
3. Remove the Mirror: The removal method depends on your vehicle's hardware version:
   • AP3 Hardware (most pre-~2022 vehicles): The mirror is held to the windshield mount by a single T20 Torx screw. Loosen and remove this screw, and the mirror will come off.
   • AP4 Hardware (~2022+ and Highland): Grip the stalk of the mirror (the part attached to the windshield mount), NOT the mirror body itself. Turn the stalk about 45 degrees counter-clockwise to release it.
4. Install the New Mirror: Installation is the reverse of removal. Attach the new mirror to the mount (either by tightening the T20 screw to ~1.8 lb-ft or by twisting the stalk clockwise until it locks). Reconnect the electrical plug and snap the plastic covers back into place.
5. Calibrate Cameras (Recommended): After reinstalling the mirror and its housing, it is a good practice to reset the camera calibration. In your Tesla's touchscreen, navigate to 'Service' > 'Camera Calibration' > 'Clear Calibration'. The car will automatically recalibrate the cameras as you drive.

OEM Part Numbers

This is not an exhaustive list, but includes the most common part numbers. Always verify with your specific vehicle.

Frequently Asked Questions (FAQ)