Mercedes-Benz C-Class W203 Front Right Door O/S Control Unit Module A2038206426

Mercedes-Benz C-Class W203 Right Front Door Control Module is an original part from the Electronic Control Modules and Controllers category, designed to manage passenger-side door functions. It ensures precise control of door components, adhering to Mercedes' factory electrical system architecture. Using an original controller maintains the consistency of the comfort system and the vehicle's body electronics.

Specifications and technical data

• SKU: A2038206426
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038206426
• Substitutable numbers: A2038206426, A 203 820 64 26, KZ
• Location on the vehicle: Front, Right
• Category: ECUs & Computer Modules

Purpose and Function of the Door Module

This control module is dedicated to the right front door of the Mercedes C-Class W203 generation. It is responsible for operating the electrical functions assigned to the passenger door, working in conjunction with the vehicle's electrical system and other body controllers. Using the correct module in this location ensures proper communication within the vehicle network and stable operation of comfort systems.

Original Mercedes Controller – Advantages of Use

As a Mercedes-branded part, this module has been specifically designed to meet the requirements of the W203 platform, maintaining appropriate quality and compatibility standards. The original controller:

• ensures proper fit with the wiring harnesses and connectors of the right front door,
• is prepared to work with the vehicle's factory software,
• minimizes the risk of communication errors within the body's electronic system.

Therefore, choosing an original door control module is a safe solution for repairing the comfort system in a Mercedes C-Class.

Condition and Installation Aspects

This part comes from the secondary market, allowing for an economical repair while maintaining the manufacturer's original specifications. The module is intended for installation in its factory location in the right front door, utilizing the existing vehicle wiring. When replacing, it is recommended to:

• verify module compatibility with the vehicle using the OEM or VIN number,
• inspect the condition of connectors and wiring harnesses in the door,
• perform any necessary adaptation or coding using an appropriate diagnostic tester.

This approach helps restore the correct functionality of the passenger-side door and reduces the risk of recurring faults.

Why Choose a Used Control Module?

For body electronics such as Mercedes door control modules, used OEM parts often represent a sensible compromise between cost and quality. You receive a part that is structurally identical to the factory equipment, without the need for aftermarket replacements of uncertain compatibility. More information on selecting and using such components can be found in our guide: Used Automotive Electronics – Second-Hand ECUs and Sensors, which discusses hardware and software compatibility, as well as practical installation tips.

Other Mercedes Electronic Control Modules and Controllers

If you are also looking for other Mercedes Electronic Control Modules and Controllers for your car, check out our dedicated offer: Mercedes Electronic Control Modules and Controllers. There you will find a wide selection of original body and comfort system controllers, tailored for various models of this brand.