2020-2026 Tesla Model Y Fender Molding: Why It Comes Loose and How to Replace It

Symptoms of a Failing Fender Molding

Failure of a Model Y fender molding is almost always a visual or audible issue. Because it is not a mechanical or electrical part, it will not trigger any warning lights on the dashboard. Common symptoms include:

• Loose or Rattling Trim: The most frequent symptom is the molding becoming loose. You may hear it rattling or vibrating against the bodywork while driving, especially at higher speeds. You will also be able to physically wiggle the part with your hand.
• Visible Gaps: A failing molding may start to pull away from the fender, creating a noticeable gap between the trim and the painted body panel.
• Detached or Missing Molding: In more severe cases, often after driving through deep water or snow, the entire molding can detach and fall off the vehicle. This is usually caused by multiple broken clips.

Known Issues, TSBs, and Recalls

While there are no official recalls or widespread Technical Service Bulletins (TSBs) from Tesla for this specific part, owner forums reveal a common complaint: the fender moldings can become loose or detach unexpectedly. This is typically due to the failure of the plastic mounting clips that hold the trim to the body. These clips can become brittle over time or break from minor impacts or even the force of water from large puddles. In some instances, owners have reported the trim coming loose without any apparent cause, suggesting a potential weakness in the original clips.

Buying a Used Fender Molding: What to Check

A used OEM fender molding is an excellent, cost-effective replacement, but a thorough inspection is key. Since failure is about physical integrity, not wear and tear, a good used part is just as reliable as a new one.

1. Inspect All Mounting Points (Most Important!)

Flip the fender molding over and carefully examine the back side. You will see a series of rectangular slots where the mounting clips attach. This is the most critical inspection point.

• Look for Cracks: Check the plastic around each slot for hairline cracks or stress marks (whitish lines). A broken mounting slot means the molding cannot be securely attached to the vehicle.
• Confirm All Slots are Intact: Compare the used part to photos of a new one to ensure no mounting locations have been completely broken off. Even one broken tab can cause a loose fit.

2. Check for Scuffs, Fading, and Damage

• Surface Condition: Look for deep gouges or heavy scuffing that has worn away the textured finish. Minor scratches are cosmetic, but deep damage may be a sign of a significant impact that could have also damaged the mounting points.
• Color and Fading: Ensure the color is a consistent black. A part that appears gray or faded has likely had significant sun exposure. While functional, it may not match the other trim on your vehicle.

3. Verify the Part Number

Tesla uses different part numbers for each of the four fender moldings. Ensure you are buying the correct part for the specific corner of the vehicle you need. Revisions are common, so a different suffix (e.g., -00-B vs -00-C) is usually acceptable and indicates a newer version of the same part.

Cost Comparison

DIY Replacement Guide (Difficulty: 1/5)

Replacing a Model Y fender molding is a simple DIY task that requires only basic tools and can be completed in under 30 minutes.

Tools Needed:

• Plastic Trim Removal Tool Kit
• Small Flathead Screwdriver (for push-pin clip, if applicable)

Step-by-Step Replacement

1. Remove Push-Pins (If Applicable): Some moldings are secured by one or two plastic push-pins in the wheel well. Use a small screwdriver or clip removal tool to pop the center pin out, then pull the entire clip assembly out. Be sure to save these as the new part may not include them.
2. Pry the Old Molding Off: Starting from the center of the arch, gently work a plastic pry tool between the fender molding and the painted bodywork. Carefully pop the clips loose one by one. Work your way around the arch until the entire piece is detached. 🎬 See: How to remove Model Y fender flares Pull it straight off.
3. Clean the Surface: Before installing the new part, clean the fender area with a cloth to remove any dirt or debris. This ensures the new part sits flush.
4. Install the New Molding: Align the new fender molding, ensuring the guide pins and clips line up with the holes in the body. For rear moldings, position the alignment tabs in the rocker panel and rear diffuser first. For front moldings, align the rear tab into the rocker panel first. 🎬 Watch: Front fender garnish replacement walkthrough Starting at one end, firmly press the molding into place. You should hear audible clicks as the clips engage.
5. Secure Push-Pins: Re-install any push-pins you removed in the first step.

Frequently Asked Questions