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Car Window Regulator Problems

Problems with window regulators are common. A broken window regulator cable can cause the window to jam or fall down inside the door.

Window Regulator | Window Motor | Video of the Window Assembly


The mechanism that moves the window up and down is called the window regulator.  
There are two basic types of window regulators: the gear-drive type (in the photo) and the cable type (see photo below). 
In a typical sedan, there are four window regulators: one inside each door.
​In some convertibles, a separate window regulator can be present inside the rear quarter panel. A window regulator doesn't need any maintenance or adjustment. If it fails, the failed part or the whole unit must be replaced. 

Symptoms of a Bad Window Regulator
- the window falls down inside the door
- abnormal noise when a window is moving up or down
- the window rises slow, jams or doesn't close fully
- the window slides up or down crooked
- the window doesn't move at all while all other windows work
- when the window switch is pressed, the window motor runs but the window doesn't move.

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