Complex Antenna Arrays and Acoustic Layering on the Rear Window
The rear glass on this executive sedan does far more than seal the cabin; it serves as a central hub for the vehicle's electronic communications and acoustic isolation. Embedded directly into the glass matrix alongside the horizontal defroster grid lines is a sophisticated multi-functional antenna array. These silk-screened conductive circuits manage everything from AM/FM radio signals to keyless remote access and onboard telematics. Installing an aftermarket panel like the Pilkington 420014685 requires exact alignment with the factory harness connections, because any hairline fracture in the conductive print disrupts radio reception or Keyless-Go functionality. Beyond electronics, this back window incorporates an acoustic PVB interlayer sandwiched within the safety glass to suppress high-speed turbulent wind roar over the trunk line. Paired with an infrared-reflecting solar coat that bounces thermal radiation away from the cabin, it keeps the rear compartment quiet and cool. The exterior edge is framed by an integrated polyurethane perimeter moulding and a wide black ceramic frit band, which cleanly conceals the pinchweld and shields the electrical solder terminals from solar ultraviolet exposure.Clearing the Burmester Shelf and Electric Sunshade Hardware
Working around the rear glass requires careful respect for the sensitive luxury components bolted directly underneath it. At the top edge, a dedicated cutout in the ceramic frit pattern accommodates the center high-mounted stop lamp (CHMSL) to ensure clean brake illumination. Along the bottom, the glass rests millimeters from the rear parcel shelf, which houses the motorized power sunblind assembly and intricate Burmester 3D Surround sound speaker grilles:| Component / Feature | Function and Clearance Detail |
|---|---|
| Motorized Roller Sunblind | Dual guide tracks run parallel inside the lower glass edge; requires precise vertical positioning to prevent binding. |
| Burmester Speaker Grilles | Acoustic metal mesh sat close to the base; vulnerable to scuffs if panels shift during fitting. |
| CHMSL Brake Light | Recessed upper interior fixture aligned through a clear ceramic frit window. |
| Antenna Amplifier Leads | Delicate side solder tabs connecting directly to the C-pillar electronic modules. |
Will replacing the back window affect my Keyless-Go or radio reception?
No, provided the terminal connectors on the new glass are undamaged and properly attached to the factory C-pillar amplifiers. The aftermarket rear window includes the matching integrated antenna grid required to relay key fob frequencies and broadcast bands without signal loss.
Can I apply any aftermarket window tint to the new rear glass?
You should stick to ceramic or carbon-based tint films. Metallic-dyed or hybrid films laid over the interior face of this glass can interfere with the embedded antenna traces, significantly degrading your Keyless-Go entry range and AM/FM reception.
Does the rear window contain any cameras or driver-assist sensors?
No. The forward-facing stereo cameras, rain sensors, and driver-assist hardware on this car are mounted to the front windshield. The rear window houses only the defroster elements, radio and access antennas, and the interior framing for the third brake light.
