Audi TT 8N Mirror Regulator Adjuster Switch Control Unit 8N1959551B

Audi TT 8N Mirror Regulator Adjuster Switch Control Unit is an original component from the Switches, controls and ignition locks group, designed for precise control of side mirror adjustments in the cabin. As a part manufactured by Audi, it ensures proper integration with the vehicle's electrical system and maintains factory-standard ergonomics.

Specifications and technical data

• SKU: 8N1959551B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8N1959551B
• Substitutable numbers: 8N1959551B, 8N1 959 551 B
• Category: Switches & Controls

Function and application

The presented mirror regulator is responsible for the electric control of the external mirror positions in the first-generation Audi TT (8N). Located in the driver's door panel, it allows for convenient selection of the mirror side and smooth adjustment in multiple directions, which translates into safe visibility while driving and maneuvering.

Thanks to its factory design, the switch works with the original door wiring harness, maintaining proper operation of the adjustment system without the need for installation modifications or adapters.

Construction and compatibility

The regulator is an electrical component integrated into a compact housing, adapted for installation in the original opening in the door upholstery. The connector used allows for direct connection to the factory plug, which facilitates the replacement of a damaged module with a functional equivalent.

As a part from the Switches, controls and ignition locks group, the component has been designed to maintain visual consistency with other elements of the Audi TT 8N cockpit, both in terms of shape and the operation of the knob.

Benefits of using an original switch

• Factory fit – maintains proper alignment with the door panel and correct operating position.
• Proper system integration – no need to modify the electrical wiring or use additional adapters.
• Consistent ergonomics – identical operation and control logic as the originally installed switch.
• Service solution – enables the restoration of full mirror adjustment functionality after the failure of the factory component.

The used condition allows for an economical repair of the mirror control system while maintaining the original build quality characteristic of the Audi brand.

Condition and preparation for installation

The item comes from disassembly and is offered as a tested, used Audi part, intended for direct replacement of a damaged switch in the vehicle. Thanks to the factory design, installation is limited to removing the old component, connecting the plug, and seating the switch in the door panel.

During service work, it is worth paying attention to the condition of the socket and the door wiring harness to ensure a stable electrical connection and long-term, reliable operation of the regulator.

Expanding the Audi control system

If you are planning a comprehensive repair or upgrade of the control zone in your Audi and need other elements from the same group, such as window buttons, headlight adjustment knobs, or ignition modules, check out the available parts in the Audi switches, controls and ignition locks category.

For drivers interested in a broader approach to the economical operation of premium cars and the use of original parts from disassembly, the practical tips contained in the article Used parts for Mercedes – original parts from disassembly may be useful, as they clearly demonstrate the advantages of using proven, factory components in other brands as well.