2004-2009 Toyota Prius Rear Spoiler: Rattles, Repairs, and Replacement

Symptoms of a Damaged or Failing Spoiler

Since a spoiler is a stationary body part, its failures are typically related to physical damage or issues with its integrated components. Here’s what to look for:

1. Rattling or Looseness

A common complaint is a rattling or creaking noise coming from the rear hatch area, especially when closing the hatch or driving over bumps. This is almost always caused by the spoiler becoming loose. The spoiler is held on by four 10mm bolts and several plastic clips. Over time, and especially if people use the spoiler as a handle to close the hatch, the mounting points on the spoiler itself or the hatch can crack, bend, or break. This allows the spoiler to move and vibrate against the metal of the hatch.

2. Physical and Cosmetic Damage

Being a plastic body part, the spoiler is susceptible to damage from the sun and physical impacts.

• Cracked Mounting Points: The most significant issue is cracking around the bolt holes. This can happen from impacts (like backing into a garage door while the hatch is open) or from repeated stress. Once the mounts are cracked, the spoiler will be loose and cannot be tightened properly.
• Peeling Paint and Clear Coat: Many owners report that the spoiler's paint or clear coat degrades faster than the rest of the car's body panels. This can result in a faded, splotchy, or peeling finish that looks unsightly.

3. Third Brake Light (CHMSL) Failure

The LED third brake light housed within the spoiler can fail. Symptoms include the light being completely out, dim, or flickering. While the LEDs themselves are long-lasting, the assembly can fail. The lens can also become cracked or hazy, reducing light output. A non-functional third brake light is a safety hazard and can result in a failed vehicle inspection or a traffic ticket.

Buying a Used 2004-2009 Prius Spoiler: What to Check

A used OEM spoiler is often the best value, providing factory fit and quality at a lower price. However, it's crucial to inspect it carefully before buying.

Inspection Checklist:

1. Inspect All Mounting Points: This is the most critical check. Flip the spoiler over and carefully examine the four bolt holes. Look for any stress cracks, broken plastic, or repairs made with epoxy. If a mounting point is broken, the spoiler will never fit securely without significant repair.
🎬 Watch: Step-by-step guide to repairing broken spoiler mounting points
2. Check for Body Cracks: Examine the entire spoiler for cracks, especially at the corners and along the edges. Even small cracks can allow water to enter and can grow over time.
3. Verify the Third Brake Light (CHMSL): Ensure the third brake light assembly is present and the lens is not cracked or hazed. Crucially, check that the wiring pigtail is intact and not cut. A cut harness will complicate installation.
4. Assess Paint Condition: Check the paint for severe fading, peeling, or deep scratches. OEM spoilers are color-matched to the vehicle. Unless you plan on repainting it, try to find one that matches your car's color code to save time and money.
5. Confirm Fasteners: The spoiler attaches with four bolts and several clips. While you can reuse your old bolts, ensure the clip areas on the used spoiler are not broken.

Known Issues, Recalls, and Service Bulletins

There are no recalls or Technical Service Bulletins (TSBs) issued by Toyota specifically for the rear spoiler of the 2004-2009 Prius. However, forum discussions among owners highlight the tendency for the mounting points to break and for the spoiler to become loose and rattle. This is often attributed to people using the spoiler as a handle to close the rear hatch.

While not related to the spoiler itself, the 2004-2009 Prius was subject to several major recalls, including for the steering intermediate shaft and the electric water pump for the hybrid system. There was also a recall related to potential floor mat interference with the accelerator pedal.

Cost Comparison: New vs. Used Prius Spoilers

Prices can vary based on condition, color, and supplier. Here is a general cost breakdown:

Installation Guide & Difficulty

• Difficulty: 2 out of 5
• Estimated Time: 1 hour
• Tools Needed: 10mm socket/wrench, trim removal tool.

Replacing the spoiler is a straightforward DIY job. The basic steps are as follows:

1. Open the Rear Hatch: Securely prop the hatch open.
2. Remove Interior Trim Panels: Carefully pry off the large plastic trim panel on the inside of the hatch. It is held on by numerous clips. You may also need to remove the upper interior panel.
3. Disconnect Wiring: Locate the wiring harness for the third brake light and disconnect it.
4. Remove Mounting Bolts: Use a 10mm socket to remove the four bolts securing the spoiler to the hatch.
5. Release Clips and Remove Spoiler: With the bolts out, the spoiler is held on by a few remaining clips. Gently pry or pull the spoiler straight off the hatch.
🎬 See this walkthrough for removing the rear hatch spoiler
6. Installation: Installation is the reverse of removal. If your replacement spoiler did not come with a third brake light, you will need to transfer it from your old spoiler. It's a good idea to apply a small amount of silicone sealant around the bolt holes to prevent any potential water leaks.

OEM Part Numbers

Toyota OEM part numbers for this spoiler are typically followed by a suffix that indicates the color. The base part number is often 76085-47030. While an exact color code list is difficult to compile, here are some known examples:

• 76085-47030-A0: Super White
• 76085-47030-B0 / B1: Silver Metallic
• 76085-47902 / 76085-47903: Often listed as replacement numbers, may come primered.

The third brake light assembly is sold separately under part number 81570-47041.

Frequently Asked Questions (FAQ)