Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635403233

The Mercedes W163 Rear Door Wiring Harness is an original electrical system component designed for the rear doors of Mercedes M-Class W163 vehicles. This complete harness, from the Wires, Harnesses, and Connectors group, allows for the restoration of proper door electrical functionality without requiring any modifications to the existing installation. Thanks to its factory design, it offers a practical solution for repairs after mechanical damage or wire corrosion.

Specifications and technical data

• SKU: A1635403110
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1635403233
• Substitutable numbers: A1635403233, A 163 540 32 33, A1635403110, A 163 540 31 10
• Location on the vehicle: Rear, Right, Left
• Category: Wiring Harnesses, Cables & Connectors

Vehicle Application and Placement

This harness is specifically designed for the rear doors of the Mercedes W163, suitable for both the right and left sides. It is responsible for transmitting signals and power between the vehicle's body wiring and the components located within the door, such as actuators, switches, and control modules.

The factory-designed wire routing and appropriately selected cable lengths facilitate correct installation of the harness through door grommets and mounting points, minimizing the risk of strain, chafing, and subsequent failures.

Construction and Technical Function

This item belongs to the Wires, Harnesses, and Connectors group, meaning it includes an integrated set of wires and factory connectors matched to the Mercedes electrical system. The use of original terminals eliminates the need for soldering or creating adapters, thereby reducing potential voltage drops and communication issues between modules.

The harness is designed to operate in the moving area of the door, where wires are subjected to repeated bending. The proper arrangement of conductors and protective sheathing is crucial for the durability of electrical connections in this body area.

Service Application and Installation

This component is particularly useful in situations where the original installation has experienced:

• circuit interruptions resulting from years of wire bending in the door grommet,
• insulation damage leading to short circuits or electronic errors,
• problems with the operation of rear door electrical functions after a collision or bodywork repairs.

Replacing the complete harness is a service solution that avoids the time-consuming process of locating individual faults and performing spot repairs. Thanks to its factory fit, installation is straightforward, maintaining the original wire routing.

Product Characteristics and Benefits of Use

The offered harness is an original Mercedes part, ensuring compatibility with factory service documentation and vehicle wiring diagrams. This is particularly important for computer diagnostics, where correct pin assignments and signal lines directly impact test results.

The main advantages of using this harness in a Mercedes W163 include:

• maintaining factory compatibility with control modules and the vehicle's body wiring,
• organized wire routing within the rear doors,
• reducing the risk of electrical errors resulting from unprofessional installation modifications.

The product is used, which in practice means the possibility of an economical repair while maintaining the vehicle's original technical specifications.

Expanding the Electrical System in a Mercedes

If you are planning a comprehensive repair or upgrade of the door electrical system in your Mercedes and require other components from the same group, such as additional harnesses, wire sections, or door connectors, check the available parts in the Mercedes Wires, Harnesses, and Connectors category.

For users interested in deepening their knowledge on selecting electrical system components and verifying compatibility by VIN, the Global Parts technical guide on turbocharging systems in BMWs may be helpful. You can find it in the article BMW Code B58, or 340 HP from the Aftermarket – Checklist Before Buying a Turbocharger and Intercooler for the BMW 3 Series (G20), which demonstrates a practical approach to OEM parts, aftermarket alternatives, and part matching.