2020-2022 Genesis G90 Rear Finish Panel & Light Bar: Damage, Diagnosis, and Replacement
A complete guide to the trunk-mounted rear finish panel for the 2020-2022 Genesis G90, covering common damage, electrical issues, and what to inspect when purchasing a used part.
- The most common failures are physical damage from impacts and failure of the integrated, non-serviceable LED light bar.
- When buying used, prioritize inspecting for cracks and signs of moisture, and verify the light bar works before purchase.
- The correct OEM part number is 87371-D2500; aftermarket versions are not available.
- Replacement is a simple DIY task, requiring removal of the trunk liner to access a few nuts and one electrical connector.
What is the Rear Body Panel Finish Panel?
On the 2020-2022 Genesis G90, the part commonly called the Rear Body Panel Finish Panel is the horizontal trim piece mounted to the center of the trunk lid. It's more than just a piece of plastic; it contains the distinctive, thin LED light bar that spans the width of the trunk, connecting the main taillights. This component is technically known in parts catalogs as the 'Molding Back Panel' or 'Deck Lid Finish Panel'. Its primary job is to complete the vehicle's premium look while housing the central portion of the rear lighting system.
Symptoms of Failure
Failure of this panel is almost always related to physical damage or electrical issues with the integrated light bar. Unlike mechanical parts, it will not cause driveability problems, but it can result in a failed vehicle inspection or a cosmetic downgrade.
- Visible Cracks or Scratches: The most common issue is physical damage from a minor rear-end collision, backing into an object, or improper handling. Look for hairline cracks, deep gouges, or scuffs on the plastic lens.
- Malfunctioning Light Bar: The integrated LED light bar may fail. This can appear as a section of the bar being unlit, flickering, or the entire bar failing to illuminate. This is an electrical failure within the sealed unit.
- Moisture or Condensation: A compromised seal can allow water to enter the panel, leading to visible condensation or fogging inside the lens. This moisture can eventually cause corrosion and lead to electrical failure of the light bar.
- Loose Fit or Broken Tabs: The panel may feel loose or have a visible gap against the trunk lid. This is usually caused by broken mounting tabs on the back of the panel, often as a result of an impact or improper removal.
Known Issues, TSBs, and Recalls
As of this writing, there are no specific recalls or widespread, documented factory defects related to the rear finish panel or its integrated light bar for the 2020-2022 Genesis G90. While other recalls exist for this vehicle for issues like fuel pumps or turbo oil pipes, the rear trim has proven to be reliable. Some Genesis models have had a Technical Service Bulletin (TSB) for stained or discolored dark chrome trim, but this does not apply directly to this specific panel, which is primarily a plastic lens assembly.
Pro Tip: The lack of known widespread issues means that any failure is likely due to an external factor like an impact or water intrusion from a damaged seal, rather than a manufacturing defect.
Buying a Used 2020-2022 G90 Rear Finish Panel
Purchasing a used OEM panel is a cost-effective way to restore your vehicle's appearance. However, careful inspection is crucial, especially since this part contains sensitive electronics.
- Thoroughly Inspect for Cracks: Pay close attention to the corners and around the mounting points on the back. Even a small hairline crack can allow water to enter and destroy the LED bar. Ask the seller for high-resolution photos of the front and back.
- Check for Internal Moisture: Look for any signs of a water line, fogging, or mineral deposits on the inside of the lens. A panel with prior water intrusion is a major red flag, even if it's currently dry.
- Verify the Light Bar Function: If possible, ask the seller to connect the panel to a 12V power source to confirm the entire LED strip illuminates correctly and evenly. If buying online, a video showing it working is ideal.
- Examine Mounting Tabs and Connectors: Ensure all mounting tabs on the rear of the panel are intact. Broken tabs will result in a poor, loose fit. Also, check that the electrical connector is not cracked, corroded, or damaged.
- Confirm the Part Number: The correct OEM part number for this panel is 87371-D2500. Verify this before purchasing to ensure compatibility.
- Sourcing Challenges: Be aware that this specific panel may be difficult to find sold individually. Often, recyclers will sell it as part of a complete trunk lid assembly. Patience may be required to find a standalone part.
Cost Comparison
The cost to replace the rear finish panel varies depending on the source of the part and labor rates.
| Part Source | Estimated Cost |
|---|---|
| New OEM | $175 - $275 |
| New Aftermarket | Not Available |
| Used OEM | $100 - $175 (if found separately) |
| Shop Labor | $125 - $250 |
Replacement Overview
Replacing the rear finish panel is a straightforward job that a DIYer with basic tools can accomplish.
- Difficulty: 2 out of 5
- Estimated Time: 1 Hour
General Steps:
- Open the trunk.
- Remove the plastic clips holding the carpeted trunk lid liner in place and remove the liner to expose the back of the trunk lid.
- Locate the electrical connector for the finish panel's light bar. Press the release tab and carefully disconnect it.
- The panel is held in place by several nuts on studs. Use a socket wrench to remove all of them.
- Gently push the panel out from the inside. There may be some light adhesive or clips holding it. Carefully work it loose from the trunk lid.
- Install the new panel by aligning it with the holes, pressing it into place, and securing it with the nuts from the inside. Do not overtighten.
- Reconnect the electrical connector and test the light bar before reinstalling the trunk liner.
Frequently Asked Questions (FAQ)
Can I just replace the LEDs inside the light bar?
No. The LED light bar is integrated into the sealed panel assembly. It is not designed to be serviced or have its internal components replaced. If the light bar fails, the entire panel must be replaced.
Is this panel the same as the main taillights?
No. This is the center panel on the trunk lid itself. The main taillights are the larger lamp assemblies located on the corners of the vehicle's body and trunk lid.
Does a replacement panel need to be programmed?
No. This is a simple plug-and-play component. As long as you have the correct part for your vehicle, no programming or calibration is required after installation.
My panel is just cracked. Can I repair it?
While minor cosmetic scratches can be polished, it is not recommended to repair cracks. A crack compromises the structural integrity and weather sealing of the panel, which will eventually lead to moisture intrusion and failure of the internal LEDs. Replacement is the only long-term solution.
Technical Specifications
OEM Part Numbers: 87371-D2500
Integrated full-width LED light bar. Mounts to the center of the trunk lid.
We Have This Part in Stock
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.
- Genesis G90: