Electric windows need strong at the first sign of trouble. Slow movement grating noises of sticking all warn of impending failure. If a window fails in the closed position then fully shut, it poses a risk and you might get cold and wet too particularly grim if you have a journey of any distance ahead of you. Electric motors do eventually burn out, but Discovery 2 windows are also prone to jamming caused by one of three plastic rollers breaking up in the mechanism.
When that happens, the regulator mechanism can’t slide horizontally in the window channel. Instead it tries to move vertically, causing the mechanism to jam up. Luckily replacing a window lift motor and or the regulator mechanism is a simple DIY job, as well see on this Discovery 2.The door panel is held by screws and plastic push plugs around the edges. Check for any plugs that come loose, and refit them before refitting the panel. Replace any that are broken to avoid rattles and vibration. Take great care with the electric motor leads. You’ll need to hold the motor partly in position while disconnecting its electrical plug. To avoid letting the weight of the motor hang on the lead. Study the connector first so you can get it smartly. It has a clip at the side to the rear of the vehicle use a fine screwdriver to move the clip gently outwards, simultaneously sliding the connector up. If you’re fitting a new regulator, add a little more grease to the runners and the central pivot no big, though, otherwise it could smear the glass.
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