2020-2025 Tesla Model Y Side Mirror: Folding Failures, Vibration, and Replacement Guide

Symptoms of a Failing Model Y Side Mirror

When a Model Y side mirror begins to fail, it can present several distinct symptoms. Because the assembly houses multiple systems, problems can range from mechanical to electrical or software-related.

1. Power Folding Failure or Grinding Noises

One of the most common complaints involves the power-folding mechanism. You may hear a loud grinding or clicking sound when the mirrors attempt to fold or unfold. In other cases, one or both mirrors may stop moving altogether or get stuck part-way. This is typically caused by wear or failure within the small electric motor and plastic gears inside the housing. Debris, ice, or dirt buildup in the pivot can also increase resistance and cause the system to stop working to prevent motor damage.

2. Mirror Glass Vibration or Rattling

Many owners report excessive vibration in the mirror glass, especially at highway speeds, which can make images blurry and unsafe to use. This can be caused by a loose mirror glass element, a problem with the internal adjustment motors, or a loose trim piece. Some brand-new vehicles have exhibited rattling noises coming from the triangular trim piece where the mirror mounts to the door.

3. Auto-Dimming Failure or Discoloration

The auto-dimming feature uses an electrochromic gel layer within the glass. When this layer fails, you may notice a persistent yellow, brown, or blue tint, or a bubble-like separation inside the glass. In other cases, the mirror may simply stop dimming at night, allowing headlight glare to affect your vision. While less common on newer cars, this fluid can potentially leak and damage paint or plastic trim.

4. Auto-Tilt Feature Malfunctions

Software glitches can cause the auto-tilt function, which angles the mirrors down when in reverse, to behave erratically. Some owners report the mirror tilting up instead of down, or moving to a random position when the car is unlocked or put into reverse. This is often a software or calibration issue rather than a mechanical failure, though repeated attempts by service centers to fix it have sometimes been unsuccessful.

Known Issues, TSBs, and Recalls

While there are no official NHTSA safety recalls for the side view mirror assembly on the 2020-2025 Tesla Model Y, several known issues and one related Technical Service Bulletin (TSB) are worth noting.

Wind Noise from Mirror Area (TSB SB-25-10-001)

A high-pitched whistle or rushing wind noise at highway speeds (above 65 mph) is a documented issue affecting some 2024-2025 Model Y vehicles. This is not caused by the mirror itself, but by a small gap between the front door's rubber window seal and the glass, right next to the mirror mount. Tesla released TSB SB-25-10-001 to address this, and the fix involves replacing the window glass run seals with updated parts. If you experience this, you can test it by having a passenger safely press on the rubber seal near the mirror while driving; if the noise changes or stops, the seal is the likely culprit.

Limited Adjustment Range

Some taller drivers of early-production 2021 Model Ys reported that the driver's side mirror could not be adjusted far enough outward and upward to get a proper view, creating a significant blind spot. This appeared to be a design limitation in the housing of early auto-dimming mirrors.

Feature Inconsistencies

Early in the Model Y's production, there was confusion as some vehicles were delivered without auto-dimming side mirrors, a feature that was standard on the Model 3. This feature was later standardized. When purchasing a used mirror, it is critical to verify its features match your vehicle's original build.

Buying a Used 2020-2025 Tesla Model Y Side Mirror

A used OEM mirror is often the best value, providing factory quality and fitment at a significant discount compared to a new part from Tesla. However, careful inspection is key to avoiding a faulty unit.

Inspection Checklist:

• Check the Glass for Dimmer Failure: Look at the mirror glass in bright light from multiple angles. Reject any mirror that shows a yellow or blue tint, bubbles, or a 'water and oil' separation effect. This is a clear sign the electrochromic auto-dimming fluid has failed.
• Inspect the Housing and Skull Cap: Check the main black plastic housing and the painted top cover (skull cap) for cracks, deep scuffs, or broken mounting tabs. While the painted cap can often be swapped from your old mirror, cracks in the main body compromise the unit.
• Test the Folding Mechanism: Gently try to fold and unfold the mirror by hand. It should move with firm, consistent resistance. If it's loose, floppy, or makes grinding sounds, the internal folding motor or gears are likely damaged.
• Examine the Electrical Connector: Look at the pins inside the main electrical connector. They should be straight, clean, and free of any green or white corrosion, which would indicate water intrusion.
• Verify the Part Number: Match the OEM part number to your original part if possible. The driver-side (left) mirror is often part number 1594111-00-C or a similar revision. The passenger-side (right) is a different part number.

Replacement Guide & Difficulty

Replacing the side mirror assembly on a Model Y is a manageable DIY project for those comfortable with basic tools. The most involved step is the removal of the interior door panel to access the mirror's mounting bolts and electrical connector.

• Difficulty: 2 out of 5
• Estimated Time: 1-2 hours
• Tools Required: Trim removal tools, T-27 Torx driver, 10mm socket with extension.

Simplified Steps:

1. Lower the window completely.
2. Use trim removal tools to carefully pry off and remove the interior door panel. This involves removing a few Torx screws and releasing a series of clips.
3. Disconnect the various electrical connectors for the window switch, door light, and speaker.
4. Peel back the foam vapor barrier near the front of the door to access the mirror's connector and one of the mounting bolts.
5. Disconnect the main electrical harness for the mirror.
6. While supporting the mirror from the outside, remove the three 10mm bolts that secure it to the door frame.
7. Carefully guide the wire harness out and remove the old mirror assembly.
8. Installation is the reverse of removal. 🎬 See this step-by-step door panel and mirror removal guide Do not overtighten the mounting bolts.

No special software programming or calibration is required after replacing the mirror assembly. The car will automatically recognize the new part.

Cost Comparison

Tesla service centers typically replace the entire assembly, which can be expensive. Buying a used OEM part can lead to significant savings.

Frequently Asked Questions (FAQ)