2017-2020 E63 AMG S Interior Quarter Panel: Solving Rattles & Sedan vs. Wagon Fitment

Symptoms of a Failing Interior Quarter Panel

Unlike mechanical parts, an interior trim panel doesn't 'fail' in a way that affects drivability. Instead, failure relates to fit, finish, and noise. Given the firm sport-tuned suspension of the E63 AMG S, these panels are more susceptible to developing issues over time.

• Rattles, Creaks, or Buzzing Noises: This is the most common complaint. Noises may be most noticeable at low speeds over uneven surfaces or when the stereo is playing music with heavy bass. The sounds are often caused by plastic clips loosening, wiring harnesses vibrating against the panel, or the panel itself rubbing against an adjacent piece of trim.
• Visible Damage: Scratches, scuffs, or gouges are common from loading and unloading cargo or from contact with rear seat belt buckles. On models with leather or Dinamica (suede-like) surfaces, this can lead to discoloration or permanent marks.
• Broken Mounting Tabs or Clips: The panel is held in place by a series of hidden plastic clips. These can become brittle and break during removal for other repairs (like speaker replacement or bodywork), leading to a loose fit and persistent rattles.
• Malfunctioning Components: If the integrated Burmester speaker, ambient light strip, or rear sunshade (on Wagons) stops working, the panel must be removed to access and service these parts. The problem may be the component itself or its wiring connector located behind the panel.

Buying a Used Interior Quarter Panel Trim Panel

Buying a used OEM panel is often the only cost-effective option, as aftermarket versions for this specific, high-trim vehicle are generally not produced. A used original part ensures a perfect match for color, texture, and fitment. However, careful inspection is critical.

1. Physical Inspection Checklist

• Check All Mounting Points: This is the most important step. Carefully inspect the back of the panel. Look for any broken, cracked, or missing clips and tabs. A panel with even one broken tab may not sit flush and will likely cause rattles.
• Examine the Surface: Look for deep scratches, scuffs, or signs of delamination, especially around the edges. For panels with Dinamica/suede, check for stains or matted-down areas that can be difficult to restore.
• Inspect Speaker Grilles: If the panel includes a Burmester speaker grille, ensure it is not dented, scratched, or separated from the panel.
• Verify Ambient Light Lens: Check the plastic lens for the ambient lighting strip. Ensure it is not cracked, cloudy, or broken.

2. Part Number and Fitment Verification

The part number for the Interior Quarter Panel is NOT 2136906703; that number corresponds to a sunroof or shade motor. The correct part numbers will typically start with 'A213...'.

• Sedan (W213) vs. Wagon (S213): These two body styles have completely different rear quarter panel shapes and sizes. A Sedan panel will NOT fit a Wagon, and vice-versa. Sedan panels are often called 'C-Pillar' trim, while Wagon panels are called 'D-Pillar' trim.
• Upper vs. Lower Sections: The full interior quarter trim is often composed of two or more separate pieces (upper and lower) that may have different part numbers.
• Options Matter: The part number will vary depending on options like the Burmester sound system (different speaker cutout), rear side sunshades (Wagon), Dinamica/suede headliner, and interior color (Black, Beige, Brown, etc.).

Before purchasing, provide the seller with your vehicle's VIN to confirm an exact match. Cross-referencing the part number from the used panel with a dealer parts catalog is the safest approach.

Replacement Difficulty and Procedure

Replacing the interior quarter panel is a complex job that requires patience and care to avoid damaging the trim or surrounding components.

• Difficulty Rating: 4 out of 5
• Estimated Time: 1.5 - 3.0 hours
• DIY Feasible: For experienced DIYers only.

While a detailed, model-specific guide is not readily available, the general procedure, based on similar Mercedes models, is as follows:

1. Disconnect the Battery: This is a mandatory safety step, as you will be working near the side curtain airbag located in the pillar. Wait at least 15 minutes after disconnecting for any residual power to discharge.
2. Remove Rear Seat: Accessing the lower part of the quarter panel almost always requires removing the rear seat cushion and side bolster.
3. Remove Adjacent Trim: The door sill scuff plate and the B-pillar or C/D-pillar trim may need to be loosened or removed to expose the edges of the quarter panel.
4. Detach the Panel: Using plastic trim removal tools, carefully begin prying the panel away from the body. It is held by several hidden clips. Work slowly and listen for each clip to release.
5. Disconnect Electronics: Before fully removing the panel, reach behind it and disconnect any electrical connectors for speakers, ambient lighting, or other accessories.
6. Installation: Installation is the reverse of removal. Ensure all wiring is reconnected before snapping the panel back into place. Align all clips carefully and apply firm, even pressure to seat them.

Cost Comparison

Aftermarket options for this specific, high-end trim panel are not available. Buyers must choose between new OEM from a dealer or used OEM from a recycler.

Prices are estimates and will vary based on the specific part number, vehicle options, and local labor rates.

Known Recalls and TSBs

As of this writing, there are no specific recalls or Technical Service Bulletins (TSBs) issued by Mercedes-Benz or the NHTSA for the interior quarter panel trim itself on the 2017-2020 E63 AMG S. However, several recalls for other systems on the vehicle, such as the eCall communication module or seat belt warnings, may require a technician to remove this panel for access. Improper removal or reinstallation during these services can lead to broken clips and subsequent rattles.

Frequently Asked Questions (FAQ)