What are the symptoms of a bad window regulator?
Image: BMW 1 Series Window Regulator Lifter for £26.59 The window goes down fine. Coming back up, it moves a few centimetres, stops, and you hear a clicking or grinding sound. Or it goes up but sits at a slight angle. Or it works perfectly on a warm day and refuses to move at all when it is cold. These are the signs of a failing BMW window regulator , the mechanism inside the door that actually moves the glass. On most newer BMW models, the window regulator is a cable-driven system. A small electric motor turns a drum, winding and unwinding cables that are attached to a carrier that the glass clips onto. When any part of this system wears, stretches, or breaks, the symptoms below follow. The Main Symptoms The window moves slowly or unevenly. A regulator that is beginning to wear will often show this first. The glass drops or rises sluggishly, taking noticeably longer than it used to, or moving in a jerky, uneven way rather than a smooth continuous motion. This is the early warn...