Mercedes-Benz of Stevens Creek

Mercedes-Benz Window Motors

Mercedes-Benz Window Motors: Function, Failure, and Replacement

You might not think window motors are an important part of your driving experience, but they certainly are. Window motors control the raising and lowering of your vehicle's windows with the push of a button. When these motors fail, you lose both convenience and security. Genuine Mercedes-Benz window motors provide the reliability and performance that luxury vehicles demand.

How Window Motors Work

Window motors are electric motors connected to a regulator mechanism that moves your windows up and down. In premium models like the E-Class, these motors include sophisticated features like anti-pinch protection and one-touch operation. The motor uses a series of gears to transform electrical energy into the mechanical force needed to raise and lower heavy safety glass with minimal noise and consistent speed.

Common Causes of Window Motor Failure

Window motors typically begin to fail after 80,000 to 100,000 miles of regular use. Excessive stress from attempting to operate frozen windows can burn out motors prematurely. You might notice slower operation, unusual grinding sounds, or windows that move unevenly. Moisture intrusion can also damage the internal components, particularly in regions with heavy rainfall or high humidity levels.

Choosing Quality Replacement Parts

Generic aftermarket window motors often lack the precision engineering found in genuine Mercedes-Benz parts. Vehicles like the C-Class require exact specifications for proper function and integration with the vehicle's electrical system. Genuine parts are extensively tested with your specific model's electrical system to ensure smooth, quiet operation and longevity that matches the premium nature of your Mercedes-Benz.

Let Mercedes-Benz USA be your partner in maintaining your vehicle's performance and longevity.

Filter

Color
Condition
MSRP
Color
Condition
MSRP

Basic Carrier

$460.00
Part Number: 166-730-89-01
Mercedes-Benz Mercedes-Benz
Positions: Left
Description: Left rear door.
Fits:
  • Mercedes-Benz:
    • GL350,
    • GL450,
    • GL550,
    • GL63 AMG,
    • GLE300d,
    • GLE350,
    • GLE400,
    • GLE550e,
    • GLE63 AMG,
    • GLS350d,
    • GLS450,
    • GLS550,
    • GLS63 AMG,
    • ML250,
    • ML350,
    • ML400,
    • ML550,
    • ML63 AMG

Electrical Closing Aid

$114.00
Part Number: 166-760-07-00
Mercedes-Benz Mercedes-Benz
Positions: Left
Replaces: 166-760-01-03
Description: Left.
Fits:
  • Mercedes-Benz:
    • GL350,
    • GL450,
    • GL550,
    • GL63 AMG,
    • GLE300d,
    • GLE350,
    • GLE400,
    • GLE43 AMG,
    • GLE450 AMG,
    • GLE550e,
    • GLE63 AMG,
    • GLE63 AMG S,
    • GLS350d,
    • GLS450,
    • GLS550,
    • GLS63 AMG,
    • ML250,
    • ML350,
    • ML400,
    • ML550,
    • ML63 AMG

Pump

$755.00
Part Number: 170-800-08-48
Mercedes-Benz Mercedes-Benz
Other Names: Supersession Dummy
Replaces: 170-800-02-48, 170-800-03-48, 170-800-04-48, 170-800-06-48
Fits:
  • Mercedes-Benz:
    • SLK230,
    • SLK320

Electric Motor

$256.00
Part Number: 171-820-13-42
Mercedes-Benz Mercedes-Benz
Positions: Left, Right
Description: Left. Window regulator,right.
Fits:
  • Mercedes-Benz:
    • CL550,
    • CL600,
    • CL63 AMG,
    • CL65 AMG,
    • SL500,
    • SL55 AMG,
    • SL550,
    • SL600,
    • SL63 AMG,
    • SL65 AMG,
    • SLK280,
    • SLK300

Window Lifter

$478.00
Part Number: 140-670-02-03
Mercedes-Benz Mercedes-Benz
Positions: Right
Description: Right;electric;less motor.
Fits:
  • Mercedes-Benz:
    • 500SEC

Window Lifter

$210.00
Part Number: 140-720-29-46
Mercedes-Benz Mercedes-Benz
Positions: Left
Other Names: Supersession Dummy
Replaces: 140-720-03-46
Description: Left;electric;less motor.
Fits:
  • Mercedes-Benz:
    • 300SD,
    • 400SE,
    • 400SEL,
    • 500SEL,
    • 600SEL,
    • S420

Holder

$14.00
Part Number: 140-730-02-14
Mercedes-Benz Mercedes-Benz
Positions: Right
Description: Cable mounting,right.
Fits:
  • Mercedes-Benz:
    • 300SD,
    • 400SE,
    • 400SEL,
    • 500SEL,
    • 600SEL,
    • S420
Backordered

Window Lifter

$87.00
Part Number: 140-730-12-46
Mercedes-Benz Mercedes-Benz
Positions: Right
Other Names: Supersession Dummy
Replaces: 140-730-04-46, 140-730-04-46-05
Description: Right;electric;less motor.
Fits:
  • Mercedes-Benz:
    • 300SD,
    • 400SE,
    • 400SEL,
    • 500SEL,
    • 600SEL,
    • S420

Control Unit

$175.00
Part Number: 140-820-32-26
Mercedes-Benz Mercedes-Benz
Description: Electrically adjustable headrest.
Fits:
  • Mercedes-Benz:
    • 300SD,
    • 400SE,
    • 400SEL,
    • 500SEC,
    • 500SEL,
    • 600SEL,
    • S420
Backordered

Hose

$4.40
Part Number: 140-821-03-97
Mercedes-Benz Mercedes-Benz
Fits:
  • Mercedes-Benz:
    • 300SD,
    • 400SE,
    • 400SEL,
    • 500SEL,
    • 600SEL,
    • S420
Backordered

Expansion Rivet

$3.20
Part Number: 140-990-05-92-9051
Mercedes-Benz Mercedes-Benz
Positions: Left
Other Names: Supersession Dummy
Replaces: 000-991-38-95, 0009913895, 124-990-09-92, 140-990-05-92, 140-990-05-92-7C45
Description: Folding aid on cover. Covering to shell-type handle. Lining under loading floor to right side member. Frame to lock elegance.
Notes: Not for australia.
Fits:
  • Mercedes-Benz:
    • 260E,
    • 280E,
    • 300SL,
    • 300TD,
    • 300TE,
    • 500SEC,
    • 500SL,
    • 600SL,
    • C220,
    • C230,
    • C280,
    • C43 AMG,
    • SL320

No results found. Here are some helpful search tips:

  • Search by a part name. Example: water pump.
  • Be less specific. Example: brake instead of ceramic brake.
  • Remove information such as make, year or model.
  • Can't find the part you are looking for? Contact us and we'll find it for you!