Mercedes-Benz W211 Power Window Master Switch - Used Original Parts

Diagnosis and Common Symptoms

From a technical standpoint, the W211 driver's side master switch is the central command for all door modules. Failure typically originates from worn internal contacts or circuit board degradation, not always from a complete electronic fault. Common symptoms include one or more windows becoming inoperative from the driver's controls while still functioning from their individual door switches. You may also experience intermittent functionality, a complete loss of power mirror adjustment, or failure of the rear window lockout button. Diagnostic Trouble Codes (DTCs) logged in the Driver-Side Door Control Module (DCM) often point to signal or actuation faults for the specific window or mirror affected.

Introduction

Restore full, reliable control over your vehicle’s windows and power mirrors with this Genuine Mercedes-Benz master switch assembly. Salvaged from a W211 chassis, this part offers the original tactile feel and precise fitment that aftermarket components cannot replicate. Each unit has been professionally removed and subjected to a full-function bench test at our facility to ensure every button and joystick command operates to factory specification.

Product Details

• Brand: Mercedes-Benz

• Model Compatibility: E-Class Saloon & Estate (W211 / S211) | 2003-2009

• Part Name: Driver's Door Power Window & Mirror Master Switch Module

• Condition: Genuine Used (Tested Working)

• Notes: Please match the part number from your original switch to ensure compatibility, as variations exist for models with and without power-folding mirrors.