Mercedes W169 W245 Door Control Unit Left N/S Rear A1698207526

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W169 W245 Door Control Unit Left N/S Rear is an original component from the Electronic control modules and controllers group, designed for operating the rear left door zone in Mercedes vehicles. The module is responsible for precise control of door functions, ensuring consistent operation of the electrical system and comfortable equipment handling.

Specifications and technical data

• SKU: A1698207526-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1698207526
• Substitutable numbers: A1698207526, A 1698207526, A 169 820 75 26, 05 0723 62
• Location on the vehicle: Rear, Left
• Category: ECUs & Computer Modules

Purpose and function of the door module

The rear left door control unit operates within the body electronics network, communicating with other vehicle modules. It is responsible for the proper operation of components located in the door, according to the specific configuration of the vehicle. Thanks to its dedicated placement in the Rear, Left area, it ensures the correct assignment of functions to the specific side of the vehicle, which is crucial for the proper operation of the comfort system.

Compatibility and OEM identification

The module belongs to a family of controllers used factory-standard in Mercedes W169 and W245 class vehicles. Identification is based on the OEM part number and available interchangeable numbers, which facilitates the selection of the correct component based on service documentation or manufacturer catalogs. In practice, this means the possibility of a technically correct replacement of a faulty controller with a unit with matching markings, without interfering with the electrical wiring.

To ensure a proper fit, it is worth comparing the module markings with vehicle data (e.g., via VIN) and information in the technical specification. This approach minimizes the risk of communication errors in the installation and eliminates problems with incorrect door recognition by the central comfort system.

Benefits of using an original controller

Using an original door module in a Mercedes W169 or W245 allows for maintaining the consistency of the vehicle's electrical architecture. The most important advantages include:

• maintaining the factory logic of the comfort system in the rear left door zone,
• no need for wiring modifications or connector adaptations,
• stable cooperation with other electronic control modules in the vehicle,
• possibility of diagnostics using standard service tools designed for the Mercedes brand.

Thanks to this, replacing a faulty controller with the correct component is a predictable process, and the risk of communication errors in the vehicle network is reduced.

Vehicle placement and mounting aspects

The precisely defined vehicle placement: rear – left side is important both for selection and installation. The module is designed to work in a specific body area, which includes the appropriate length of wiring, connector configuration, and function assignment to the correct door. During installation, it is important to maintain the correct position of the module and ensure secure seating of the connectors to provide reliable electrical contact.

Before installation, it is recommended to verify the compatibility of markings with vehicle data and perform diagnostics after assembly to confirm proper communication with the central system and the absence of active errors in the rear left door zone.

Condition, origin, and cost-effectiveness

The offered item is from the group of used controllers, which allows for an economical repair of the comfort system while maintaining the original manufacturer's specification. In practice, this means a favorable cost-to-functionality ratio, especially in the case of older vehicle generations, where a full replacement of the installation or the use of substitutes is often not economically justified.

If you are considering using used electronic components in your car and want to better understand the principles of their selection and verification, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

If you are planning a comprehensive repair or modernization of the door zone and comfort system in your Mercedes and need other elements from the same group, such as door controllers, comfort modules, or other equipment management units, check the available parts in the Electronic control modules and controllers Mercedes category.