Mercedes W221 Wiring Loom Cable Harness Door Rear Right A2214405406

The Mercedes W221 Rear Right Door Wiring Harness is an original electrical installation component designed for the rear right door panel of the S-Class model. As part of the Wires, Harnesses, and Connectors group, it ensures proper connection between body modules and door hardware, such as window control or central locking. This is a practical solution for users who want to restore full door electrical functionality without compromising on fitment.

Specifications and technical data

• SKU: A2214405406
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2214405406
• Substitutable numbers: A2214405406, A 221 440 54 06
• Location on the vehicle: Rear, Right
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Fitment

The presented wiring harness has been specifically designed for the rear right side of the W221 generation Mercedes S-Class. Its placement on the vehicle, designated as rear – right, means the component is structurally adapted to the door's geometry, factory grommets, and mounting points in this area. This ensures proper wire routing, minimizing the risk of chafing and damage during door operation.

Technical Characteristics of the Harness

This harness belongs to the Wires, Harnesses, and Connectors group, meaning it comprises a set of electrical wires along with appropriately selected connectors and terminals for door installation. Its design is intended for compatibility with factory Mercedes control modules, which facilitates maintaining full compatibility with the vehicle's original comfort and safety system.

The connector layout is adapted to the factory connection points in the door and the body pillar, allowing for a near plug-and-play installation without the need for wiring modifications or interference with the vehicle's original harness.

Benefits of Using an Original Harness

Using an original door wiring harness in the Mercedes W221 allows you to:

• maintain compliance with the vehicle's factory electrical architecture,
• ensure correct operation of comfort and safety functions assigned to the rear right door,
• minimize the risk of installation errors resulting from incorrect wire or connector selection,
• facilitate future diagnostics due to predictable harness routing and standard measurement points.

A component in used condition is a good choice for maintenance repairs where maintaining original specifications at a reasonable service cost is crucial.

Condition and Service Application

The offered wiring harness is a used part, salvaged from a dismantled vehicle and classified as an original used Mercedes part. Such components are particularly useful for:

• repairing damage from chafed wires in the door grommet,
• resolving faults with the central locking, power windows, or other door functions,
• restoring installation integrity after a collision or bodywork intervention.

By retaining the factory wire and connector layout, installation is predictable, and the time required to fit the component to the vehicle's rear right side is limited to standard service procedures.

Part Selection by OEM Number and Purchase Support

To ensure the harness will work correctly with your specific Mercedes' electronics, it is advisable to verify compatibility by OEM number or vehicle VIN before purchasing. Helpful tips for such verification can be found in the material: Guide: How to Select the Right Car Part by VIN and OEM Number, which describes the compatibility checking process step-by-step and lists questions worth asking the seller.

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as additional harnesses, wires, or door installation connectors, check the available parts in the Mercedes Wires, Harnesses, and Connectors category.