Standard Ignition DWS-857 Door Window Switch - Front Left

OE-Style Power Window Switch for Escape and Mariner

Restore driver-side window control with this direct-fit door window switch from Standard Ignition. The DWS-857 is built to OE specifications for proper fit, form, and function in select Ford and Mercury applications, including the front left position.

• Direct-fit OE replacement for power window switch function
• Female connector with 11 male blade terminals
• Copper alloy conductors for strong electrical conductivity and low resistive loss
• Robust construction for service use
• Built to OE spec for fitment and electrical interface

Detailed Product Overview

Standard Ignition DWS-857 is a door window switch engineered to restore power window operation when the original switch fails, becomes intermittent, or loses electrical contact. It is a fitment-based replacement for 2001-2006 Ford Escape, front left, and 2005-2006 Mercury Mariner, front left. If you are searching for a Ford Escape power window switch or a Mercury Mariner driver window switch, this OE-style part number DWS-857 is built for the application.

The switch uses copper alloy conductors to support reliable current flow and reduce resistive losses. Standard Ignition manufactures this switch to OE specifications and maintains quality control through the production process to help ensure proper electrical connection and panel fit.

This part cross-references Dorman - OE Solutions 901-904 for the same application.

Common Problems This Switch Can Address

• Driver window does not respond when the switch is pressed
• Intermittent power window operation
• Window only works in one direction
• Worn or damaged switch contacts
• Electrical connection issues at the door switch panel

Installation Notes and Tips

Verify the connector style, terminal count, and front left position before installation. Compare the original switch to DWS-857 to confirm the female connector and 11 blade terminals match the vehicle harness. Check the door panel and switch bezel for wear or damage that could affect seating or electrical contact.

Quality Assurance

Standard Ignition builds the DWS-857 to OE specification and controls manufacturing quality throughout the process. The switch is produced with service-professional demands in mind and uses materials selected for dependable electrical performance.