Aston Martin DB11 Taillight Left Right HY5313405AE HY5313404AE

The part numbers HY53-13405-AE (Left/Nearside) and HY53-13404-AE (Right/Offside) identify the Rear LED Taillight Assemblies for the Aston Martin DB11.

These “Blade” style lights are iconic to the DB11’s design, utilizing ultra-thin LED light-pipe technology to create a seamless, solid red arc across the rear quarters.

1. Technical Specifications

Type: Full LED (No serviceable bulbs).
Suffix “AE”: This represents the latest hardware revision. Earlier versions (AC/AD) occasionally suffered from “ghosting” or individual LED diode failures. The AE revision features improved internal circuitry and better vibration resistance.
Finishes: * Red Lens: The standard classic look.
- Smoked/Clear Lens: Often found on Shadow Edition or AMR models.
- Note: Ensure your replacement matches your existing side, as the “AE” internal electronics are compatible, but the lens tint must be identical.

2. Common Issues: Why Replace?

Condensation & Water Ingress: The most common failure. If the seal between the lens and the housing fails, moisture enters and shorts out the LED driver board. If you see “beading” water inside, the unit is likely on its way to failure.
The “Partial Outage”: You may notice a section of the red “blade” is dimmer than the rest or flickering. Because the LEDs are hard-wired, this cannot be fixed with a bulb swap; the entire unit must be replaced.
Physical Cracking: Due to the “wrap-around” design, these lights are the first point of contact in minor parking lot bumps. Even a hairline crack will eventually lead to the moisture issues mentioned above.

3. Installation & Alignment

Installing these is a “dry” task (no fluids involved), but precision is required:

Access: You must access the mounting nuts from inside the trunk (boot) by pulling back the carpeted trim panels.
Gap Alignment: The taillight must be aligned with the rear fender (wing) and the trunk lid simultaneously. There are specific shims often used to ensure the “blade” flows perfectly into the lines of the bodywork.
Plug & Play: These units are generally not “coded” to the car, meaning they should function immediately upon being plugged in without dealer programming.