BMW M4 Windows Inspection at your home or office.

Common reasons for this to happen:

• Blown Fuse: If none of the power windows are functioning there is a good chance that the problem is a blown fuse or a bad relay. While these are two separate issues, the symptoms are often very similar. A complete inspection of the fuses and electrical system will be necessary to determine where the problem is and how to repair it.

• Burned Out Motor: if the windows are not going up or down and there is no noise coming from the door when the switch is pressed there is a good chance the electric motor is burned out or malfunctioning. The motor will have to be replaced.

• Power Window Regulator: If the motor is running when the switch is pressed but the window does not move, the regulator is likely damaged or malfunctioning. There are a number of parts that can break on a regulator. In this situation the regulator will have to be repaired or replaced.

• Malfunctioning Motor: If the window is still moving up and down but very slowly, the electric motor may be malfunctioning. If it is making a whining sound this can also indicate a problem. As the motor ages it will wear out and eventually it will have to be replaced.

• Broken Window Tracks: There are window track guides, which hold the window in place as it goes up and down. If the track guides are damaged it can cause problems with the window going up and down. Common symptoms include a slow moving window, and a rattling or grinding noise. Eventually, the window may fall inside the door.

• Worn Window Switch: The power window switch gets used a lot and eventually it can wear out which will prevent power from going to the window. If this happens the window can end up stuck in the up or down position.

• Bad Wiring: Wiring is integral to the operation of the power windows and if there is a short, a faulty switch or a malfunctioning relay it can bring the whole system to a halt. A professional should deal with wiring issues.

• Broken Regulator Manual Window: If the window is starting to tilt sideways, the most likely cause is a broken regulator. The wheels on the end of a regulator will often break off which will cause the glass to tilt sideways, and eventually fall into the door.