Replacing a Faulty Switch: Locate the window switch panel. This is the button used to operate your window. It is almost always on the door, however, they are rarely found on the center console. Remove the window switch panel. Be careful not to scratch up the door panel while removing the window switch, as it often requires prying. Using a shop rag or piece of cardboard under your prying tool can help. Unplug the wiring connectors from the switch. You will need to test these connectors to make sure that they are providing the appropriate 12 volts to your switch.
Locate a replacement fuse. It must be the rated for the same amperage as the original fuse that operated the window mechanism. The amp rating should be printed on the fuse, and it should also be listed in your owner’s manual. Do not use a fuse with a higher amp rating, as this may lead damaging the electrical components of your vehicle. Push the new fuse straight down into the cradle. The fuse must be "set". This means that it does not move or wobble. Turn your car key to the "on" position. This provides power to your windows and allows you to test them. You need not start your car. Test your windows. Confirm that they go up and down without restriction.
Seeking the Elusive Electrical Problem. Many times electrical problems are the most elusive, because they can occur intermittently. For example, the car engine may not work properly, but only after the engine warms up. Or the ignition works randomly. Perhaps the engine cuts out without notice while cruising down the highway. Then again, your car might have a faulty alternator or a defective wire.
All of these are electrical problems which can be fixed by mobile car mechanics. Using state-of-the-art diagnostic equipment is necessary to pinpoint electrical problems in computerised engines, so it's important to use a technologically current mobile car service. The kinds of electrical repairs fixed by mobile mechanics include the following. Fault testing including reading computer fault codes; ECU and PCM; Electronic ignition repairs; Electronic dash repairs; Engine light analysis; Electronic or electric module analysis; Starter replacement or rebuilding; Alternator replacement or rebuilding; Battery replacement; Electric brake repairs; Alarm wiring repairs; Air conditioning repair.