Mercedes R170 Central Locking Unit Pump Box Control Unit A1708000548

Mercedes R170 Central Locking Unit Pump Box Control Unit is a specialized module responsible for operating the locking system in the doors and trunk lid. As an original component from the Locks and latches group, it ensures consistent operation of the factory comfort system, maintaining proper control logic and communication with the vehicle's electrical installation. This used component allows for a technically correct repair without the need for an expensive replacement of the entire system.

Specifications and technical data

• SKU: A1708000548
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1708000548
• Substitutable numbers: A1708000548, A 170 800 05 48
• Category: Exterior Locks & Lock Hardware

Function and application in the central locking system

The presented central locking control unit for the Mercedes R170 acts as the "brain" of the locking system. It is responsible for:

• controlling the opening and closing of door and trunk locks,
• coordinating the operation of actuators and position sensors,
• handling comfort locking functions in accordance with the vehicle's factory configuration,
• cooperating with the vehicle's electrical installation and security system.

By maintaining the original electrical architecture, the module allows for the restoration of proper central locking operation after the failure of the previous pump or control unit.

Construction and technical characteristics

The central locking pump in the form of a control box is an integrated electronic-mechanical assembly. The housing contains:

• an electronic section responsible for control logic and communication with the vehicle's installation,
• an actuator part generating the appropriate pressure or vacuum for the actuators (depending on the solution used in a given unit),
• connectors adapted to the factory Mercedes R170 wiring harness.

This solution reduces the number of connections, facilitates installation, and minimizes the risk of errors resulting from improper matching of replacement parts.

Benefits of using an original central locking pump

Using an original central locking control module in a Mercedes R170 provides a number of practical benefits:

• High compatibility with the vehicle's installation – factory connectors and operating configuration matched to the specific model platform.
• Stable operation of the locking system – correct control of all locking points without delays or incorrect reactions.
• Reduction of the risk of errors in comfort and security systems resulting from the use of unsuitable replacements.
• Possibility of economical repair – replacing the control unit itself instead of rebuilding the entire system.

Condition, verification, and preparation for installation

The component comes from the secondary market, which allows for a rational reduction of service costs while maintaining the factory design. Before being offered, the module is verified for its intended use and completeness from an installation perspective. As a result, the user receives a component ready for installation in place of the damaged central locking pump, without the need to interfere with the original electrical wiring.

Selection and vehicle compatibility

To correctly select this central locking pump for a specific Mercedes vehicle, it is recommended to compare the part numbers and vehicle equipment configuration with the technical data in the specification. Proper module selection is crucial for correct cooperation with other controllers in the car, including the comfort and security system. In case of doubt, it is worth consulting a service center or a specialist in automotive electronics to avoid communication bus issues and diagnostic errors.

If you are planning a comprehensive repair or modernization of the security and comfort zone in your Mercedes and need other elements from the same group, such as door actuators, lock cylinders, or locking mechanisms, check the available parts in the Mercedes Locks and latches category.

For users interested in a wider range of vehicle modifications, including safely increasing performance using secondary market components, an article describing a practical approach to tuning and purchasing used components may be helpful – you can find more information in the material on safely increasing power in the Audi RS3 and selecting used turbochargers.