2016-2020 Toyota Mirai Decklid: A Guide to Damage, Parts, and Replacement
Navigating the replacement of the unique decklid on the first-generation Toyota Mirai, from sourcing a used part to understanding its specific components.
- The decklid only fits 2016-2020 Toyota Mirai models; parts from the 2021+ generation are not compatible.
- No new aftermarket decklids are available, making used OEM parts the only cost-effective alternative to new dealer parts.
- When buying a replacement, you are typically buying a bare shell. You must transfer the lights, camera, latch, and trim from your old lid.
- When inspecting a used decklid, check the inner structure for signs of buckling or repair, as this indicates it came from a car with significant collision damage.
Understanding Your Mirai's Decklid
The decklid on a first-generation Toyota Mirai is more than just a simple hinged panel. It's an assembly that integrates lighting, safety, and cosmetic elements. When replacing the decklid, it's important to know whether you are buying a bare shell or a complete assembly. A bare shell is just the painted metal panel itself. A complete assembly, often found in the used OEM market, may include the inner tail lamps, the rearview camera, the electronic latch actuator, and the chrome garnish. Due to the low production volume of the Mirai, new aftermarket decklids are not manufactured, making your only options a new OEM part from Toyota or a recycled OEM part from another Mirai.
Symptoms of Decklid Failure
Failure of the decklid assembly usually relates to physical damage or the failure of a component attached to it.
- Visible Damage: Dents, dings, deep scratches, or cracks from a rear-end collision are the most common reasons for replacement.
- Poor Alignment or Gaps: If the trunk lid doesn't line up with the quarter panels, it may have been improperly installed or the vehicle may have underlying frame damage from an accident.
- Trunk Fails to Latch or Open: This is often caused by a faulty electronic latch actuator (Part No. 64600-62020) or a problem with the striker. In some cases, an object can fall into the latch area and prevent it from closing.
- Water Leaking into Trunk: A bad seal, poor alignment, or damage to the panel can allow water to enter the luggage compartment, leading to mold, mildew, and potential damage to items in the trunk.
- Backup Camera Malfunction: If the rearview camera (Part No. 86790-62010) image is flickering, blurry, or not showing up at all, the camera itself or its wiring could be damaged, often as a result of a minor impact to the decklid.
- Tail Light Issues: Cracks in the decklid-mounted tail light lenses (Part Nos. 81580-62010, 81591-62010) can allow moisture inside, causing the bulbs to fail or the lens to fog up.
Known Issues, Recalls, and Technical Service Bulletins (TSBs)
As of mid-2026, there are no specific NHTSA recalls or Technical Service Bulletins (TSBs) issued for the decklid, trunk latch, or related components on the 2016-2020 Toyota Mirai. While the Mirai has been subject to some recalls, they pertain to other vehicle systems like the fuel cell controller, software, or stability control.
Compatibility Warning: The decklid for the 2016-2020 Toyota Mirai is unique to this generation. A decklid from the redesigned 2021 or newer Mirai will not fit. You must source a part specifically from a 2016, 2017, 2018, 2019, or 2020 model.
Buying a Used 2016-2020 Mirai Decklid: What to Inspect
Since new aftermarket options are non-existent, a used OEM decklid is the most cost-effective choice for repair. Here’s what to look for when buying a recycled part.
Physical Inspection Checklist:
- Check for Hidden Damage: Look past the outer paint. Inspect the inner structure of the decklid for any signs of buckling, creasing, or non-factory welds. These are red flags indicating the donor car was in a severe accident, and the lid may be difficult to align.
- Look for Body Filler: Run your hand over the surface to feel for waviness that might indicate a previous repair. If you have a small magnet, you can test for areas of thick body filler (a magnet won't stick well), though be aware that some decklids use aluminum panels where a magnet won't stick at all.
- Inspect Included Components: If you are buying an assembly, check the condition of the tail lights for cracks or moisture. Examine the rearview camera lens for deep scratches. Check that the chrome trim and emblems are intact.
- Verify Mounting Points: Ensure all threaded holes for hinges, the latch, and trim panels are clean and not stripped or damaged.
Why Used OEM is Your Best Bet
For a niche vehicle like the Mirai, used OEM is the only practical alternative to an expensive new part from the dealer. A genuine Toyota part, even used, guarantees perfect fitment with your vehicle's body lines and ensures that all your original hardware, lights, and camera will bolt on correctly without modification.
Replacement Overview
Replacing the decklid is a moderately easy job but requires a helper to avoid damaging the paint or the panel itself.
- Difficulty: 2.5 out of 5
- Time: 1.5 - 2.5 hours (not including painting)
General Steps:
- Open the trunk and remove any plastic interior trim panels from the decklid to access the wiring.
- Disconnect the electrical connectors for the latch, tail lights, and rearview camera. Unclip the wiring harness from the decklid.
- Have a helper hold the decklid securely. Use a wrench to remove the bolts connecting the lid to the hinges. Carefully lift the old decklid off the car.
- If your replacement decklid is a bare shell, you will need to transfer the latch, lights, camera, and trim from your old lid to the new one.
- With your helper, position the new decklid onto the hinges and loosely install the bolts.
- Adjust the lid to ensure even gaps with the quarter panels and that it sits flush with the rear bumper. Once aligned, tighten the hinge bolts to spec.
- Reconnect the wiring harness and reinstall the interior trim panels.
Pro Tip: Before fully removing the old decklid, use a marker to trace the position of the hinge brackets on the lid. This will give you a starting point for aligning the new panel and can significantly speed up the alignment process.
Cost Comparison
Replacing a Mirai decklid involves the cost of the part, plus painting and labor. Prices for new parts can vary between dealerships.
| Part/Service | Estimated Cost | Notes |
|---|---|---|
| New OEM Decklid (Shell) | $400 - $600 | This is for the bare panel (Part No. 64401-62030) and does not include paint, lights, or hardware. |
| New Aftermarket | Not Available | No aftermarket manufacturers produce this body panel for the Mirai. |
| Used OEM Decklid | $450 - $750 | Price varies based on condition and included components (lights, camera, etc.). Will require painting to match your vehicle. |
| Shop Labor (Installation & Painting) | $800 - $1,300 | Includes painting the new or used panel off the car, installation, and swapping over all components. Labor rates vary by shop. |
Associated Part Numbers
This list includes the main decklid shell and its most common associated components. Always verify part numbers with a dealer using your VIN.
| Part Name | Part Number | Approx. New OEM Price |
|---|---|---|
| Decklid Panel (Shell) | 64401-62030 | ~$412 |
| Garnish / Center Trim | 76801-62010-C1 | Varies by color |
| Inner Tail Light (Right) | 81580-62010 / 81581-62010 | ~$230 |
| Inner Tail Light (Left) | 81590-62010 / 81591-62010 | ~$235 |
| Rear View Camera | 86790-62010 | ~$275 |
| Trunk Latch Actuator | 64600-62020 | ~$175 |
Frequently Asked Questions (FAQ)
Will a decklid from a 2021 Mirai fit my 2018 model?
No. The Toyota Mirai was completely redesigned for the 2021 model year. Body panels, including the decklid, are not interchangeable between the first (2016-2020) and second (2021+) generations.
Do I need to get a used decklid painted?
Yes. Used body parts are almost never the exact color of your vehicle, and they often have minor scratches from storage and handling. To ensure a perfect match and finish, you will need to have a professional body shop paint the replacement decklid.
Can I just replace the backup camera or a tail light instead of the whole lid?
Yes. All components on the decklid, such as the camera, lights, and latch, are available individually and can be replaced separately if the main decklid panel is not damaged.
Is replacing the decklid a difficult DIY job?
The job is mechanically simple (just a few bolts and electrical clips), but it is physically awkward. The decklid is large and must be handled carefully to avoid scratching the car or the panel itself. It is strongly recommended to have a helper. The most challenging part for a DIYer is achieving perfect panel alignment.
Technical Specifications
OEM Part Numbers: 64401-62030 76801-62010-C1 81580-62010 81581-62010 81590-62010 81591-62010 86790-62010 64600-62020
Compatibility is limited to 2016, 2017, 2018, 2019, and 2020 Toyota Mirai vehicles.
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Toyota Mirai:
- Understanding Your Mirai's Decklid
- Symptoms of Decklid Failure
- Known Issues, Recalls, and Technical Service Bulletins (TSBs)
- Buying a Used 2016-2020 Mirai Decklid: What to Inspect
- Physical Inspection Checklist:
- Why Used OEM is Your Best Bet
- Replacement Overview
- Cost Comparison
- Associated Part Numbers
- Frequently Asked Questions (FAQ)
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