Audi Window Switch - VNE 8N0959855AB98

Product Information

A door window switch is the electrical component that activates a vehicle’s window regulator motor to be raised or lowered. In most North American market European cars, the driver has a complex window switch that controls all 4 windows, and it is usually located on the driver's door. Some models of Mercedes Benz and Saab also have the window switches located centrally. The switches are usually simple, consisting of plastic buttons or toggles that connect to electrical contacts and are occasionally backlit for higher visibility.

Common failure modes of a door window switch include electrical contact wear, dirt or debris obstructing the switch mechanism, or internal circuitry failure. When diagnosing a faulty window switch, it's important to first rule out other potential issues, such as a failed window motor, blown fuse, or wiring problems.

If the switch feels loose or doesn’t click when pressed, it may indicate mechanical wear inside the switch. In cases where the window only works intermittently, the issue could be dirt buildup inside the switch or a loose connection, but more often intermittent window lift problems are related to the regulator and motor. A multimeter can be used to test whether the switch is properly sending an electrical signal to the motor. If the motor works when applying 12 volts to the motor connector, but the window doesn’t respond to the switch, it is likely the switch itself that needs replacing

• Window doesn't roll down: With enough actuation its likely that a switch will eventually fail, typically for the most used window. If the window has two switches, for instance, the driver switch pack and a rear door window switch, the other switch should continue to work. That’s a dead giveaway of a broken switch.
• Window operation is intermittent: If a switch is dirty or contaminated by crumbs or a spilled beverage, the operation could be intermittent. Apply 12v directly to the window motor, if it works as it should, the switch should be cleaned or replaced.
• Burned-out lights: In many European vehicles, the window switches will be backlit for easy night usability. Even in some modern luxury cars, the window switches may still use an incandescent bulb which of course can burn out. You can choose to try and replace the bulbs, but switches and switch packs are rarely serviceable and you would need to replace the unit to achieve appropriate lighting.

About VNE

VNE GmbH was founded in 2001 by Volker Natorp in Hamburg, Germany. Volker has a long, storied history in the automotive field. He began his career in the 1970s working for Wulf Gaertner and in the 1990s eventually branched out on his own to start his own sales repping agency. During that time, he represented TMD Friction (Pagid/Textar) and managed all of the North American sales for them and eventually added Schaeffler Automotive to his roster.

In 2007, VNE GmbH relocated to Ganderkesee, Germany and was renamed VNE Automotive GmbH & Co. With continuous growth, the decision was made to solely focus on developing VNE Automotive and, in 2014, the focus became reality with the commissioning of a new warehouse and office space. Today, VNE Automotive prides itself on never having followed the aftermarket trend. VNE Automotive operates in a highly specialized, niche product sector, by only offering OEM automotive spare parts to more than 50 countries worldwide. This is evident from the unique, and sometimes hard to find, product groups spanning engine management, body electrical, and brake systems.