Mercedes W221 Bootlid Trunk Tailgate Lid Open Hydraulic Pump Motor 2218000148

Mercedes W221 Bootlid Trunk Tailgate Lid Open Hydraulic Pump Motor is a specialized component of the trunk lid lifting system, designed for the W221 generation S-Class models. Thanks to its precise construction and compatibility with the factory system, this used component allows for the efficient restoration of comfortable, semi-automatic, or automatic trunk lid opening, while maintaining the original operating characteristics of the system.

Specifications and technical data

• SKU: A2218000148
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2218000148
• Substitutable numbers: A2218000148, A 221 800 01 48, 2218000148
• Category: Boot & Hatch Lids

Purpose and function in the trunk lid system

The described hydraulic pump is responsible for generating pressure in the system that assists in opening and closing the rear lid in the Mercedes S-Class W221. It works in conjunction with actuators, lines, and electronic controls, ensuring smooth, controlled movement of the trunk lid. Using a dedicated solution for this body generation allows for maintaining stable operation of the entire trunk lid system without the need for installation modifications.

Construction and fitment for Mercedes W221

The Mercedes W221 Bootlid Trunk Tailgate Lid Open Hydraulic Pump Motor has been designed as an element of the comfort access system for the luggage compartment. The design provides for compatibility with factory mounts and the original hydraulic and electrical installation in the Mercedes W221, which facilitates installation and reduces the risk of leaks or improper operation.

As a part from the Trunk lids and rear components group, this component is crucial for the proper operation of the lid lifting and closing mechanism, affecting both the convenience of use and the safety of vehicle operation.

Benefits of using an original hydraulic pump

Using an original hydraulic pump in the Mercedes W221 allows for maintaining the factory operating parameters of the trunk lid system. In practice, this means:

• smooth opening and closing of the trunk lid without jerking,
• proper cooperation with factory controls and safety features,
• maintaining the lid movement speed characteristics intended by the manufacturer,
• reducing the risk of comfort system and body electronics errors.

For the user, this translates into consistent operation of the entire trunk lid system and the ability to restore full functionality without interfering with the vehicle's construction.

Product condition and service application

The item is offered as a used part, which makes it an attractive solution for maintenance repairs or restoring the functionality of the trunk lid opening system in older S-Class W221 models. This type of component is particularly useful in situations where the existing pump has worn out, is leaking, or is unable to maintain proper system pressure.

Before installation, it is recommended to perform a standard verification of the vehicle's hydraulic and electrical installation to ensure stable and safe operation of the entire trunk lid system after replacing the component.

Expanding the Mercedes trunk lid system

If you are planning a comprehensive repair or upgrade of the rear body area in your Mercedes and need other elements from the same group, such as hinges, actuators, or lid locks, check out the available parts in the Mercedes Trunk lids and rear components category.

For users interested in a broader approach to diagnostics and the selection of powertrain and charge air cooling system components, the practical Global Parts service guide may be helpful – check out the article on checking the turbocharger and intercooler in the BMW B58 engine, which shows how to approach component verification step-by-step before purchasing on the secondary market.