Mercedes W177 Rear Electric Motor Caliper Hand Brake Actuator Left Right N/O/S

Mercedes W177 Rear Electric Motor Caliper Hand Brake Actuator Left Right N/O/S is a precision braking system component designed to work with the electric parking brake in Mercedes compact class models. This used actuator, belonging to the Brake calipers and brackets group, ensures the efficient operation of the caliper mechanism on the rear axle, supporting stable vehicle immobilization when parked. This solution is dedicated to users looking for a technically matched component at a reasonable price.

Specifications and technical data

• SKU: A0001500300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0001500300
• Substitutable numbers: A0001500300, A 000 150 03 00
• Location on the vehicle: Rear, Right, Left
• Category: Calipers & Brackets

Purpose and vehicle placement

The hand brake actuator in this version is intended for installation on the rear axle of the vehicle, with the possibility of use on both the right and left sides. Such a solution allows for flexible use of the component depending on the caliper configuration in a given Mercedes W177 unit. The component works with the caliper mechanism, being responsible for generating the clamping force of the brake pads after the electric parking brake is activated.

Technical and functional characteristics

Mercedes W177 Rear Electric Motor Caliper Hand Brake Actuator Left Right N/O/S is an actuator element of the system that converts the signal from the control module into the mechanical movement of the caliper. Thanks to this, the parking brake can be activated and released from the cabin without using a classic lever. The design of the actuator is adapted to work in the demanding conditions of the rear suspension, where variable loads, moisture, and road contaminants occur.

A used element of this type is a good choice in situations where:

• the original actuator has suffered an electrical or mechanical failure,
• there are braking system errors related to the operation of the parking brake,
• it is necessary to replace the complete caliper along with the electric drive.

Benefits of using an original Mercedes component

Choosing a component signed by the Mercedes brand means maintaining the factory concept of the braking system, which translates into predictable operation and compatibility with the vehicle's electronics. The original hand brake actuator:

• is designed for specific operating parameters of the rear caliper,
• works with the factory software of the parking brake controller,
• minimizes the risk of adaptation and calibration problems after installation.

For the user, this means stable operation of the parking brake and a lower risk of repeated service interventions in a short time.

Product condition and use in service practice

The presented hand brake actuator is a used element, which in workshop practice often constitutes a reasonable compromise between the cost of repair and maintaining the manufacturer's original specification. This type of part is particularly useful for:

• braking system repairs after an electric parking brake failure,
• regeneration or replacement of calipers on the rear axle,
• restoring full vehicle functionality after operational damage.

Due to the nature of the work, it is worth entrusting the installation of the actuator to a service center with experience in electric parking brakes in Mercedes vehicles, which will facilitate proper adaptation and functional testing after replacement.

Support with selection and additional materials

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as calipers, mounting brackets, or components cooperating with the parking brake, check the available parts in the Mercedes brake calipers and brackets category.

When selecting used braking system elements – including hand brake actuators – it is worth following a proven verification procedure. Detailed tips on how to safely choose discs, calipers, and components related to ABS and the parking brake can be found in the article: Second-hand braking system: how to safely choose discs, calipers, and ABS?.