Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor 8J0951177

Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor is an original security system component designed for installation in the cabin of the Audi TT 8J generation. This specialized sensor is responsible for monitoring the interior space under the roof, supporting the proper operation of the factory alarm and enhancing vehicle protection. Thanks to its perfect fit for the specific Audi TT 8J platform, it serves as a precise service solution for repairs or completing the alarm system installation.

Specifications and technical data

• SKU: 8J0951177
• Mark: Audi
• Condition: Used
• OEM Part Number: 8J0951177
• Substitutable numbers: 8J0951177, 8J0 951 177
• Color: Grey
• Rim width: 8
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function in the alarm system

The presented interior sensor works with the Audi alarm system, monitoring the area under the roof and reacting to unauthorized intrusions into the cabin space. This component is designed as part of an OEM system, which translates into:

• consistency with the electrical architecture of the Audi TT 8J,
• proper cooperation with the alarm control unit,
• stable operation under typical operating conditions.

As a result, the sensor can be used both for replacing a damaged component and for restoring the completeness of the factory security system in the vehicle.

Design, color scheme, and interior integration

The sensor housing is finished in a subdued gray color, which facilitates visual matching with the headliner and interior trim elements of the Audi TT 8J. The neutral shade promotes discreet integration with the upholstery, ensuring the component does not distract from other cockpit details.

The sensor construction is prepared for installation in the factory-designated location under the roof, allowing for the preservation of original wiring paths and interior aesthetics. Precise fitment with headliner elements reduces the risk of unwanted play and noise while driving.

Service application and technical fitment

The Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor is suitable for situations where it is necessary to:

• replace a damaged or unstable sensor,
• complete a missing element after previous interior modifications,
• restore the full functionality of the factory alarm.

The item belongs to a group of components dedicated to a specific model, which helps maintain the original operating parameters of the security system. The used condition of the part means it is an economical solution, allowing for vehicle service while maintaining the original system design.

Installation aspects and practical benefits

Due to its factory design for the Audi TT 8J, the sensor is prepared for installation in the location provided by the vehicle manufacturer. In practice, this translates into:

• the ability to use existing mounting points,
• preservation of original electrical wiring routing,
• minimizing interference with the headliner structure and roof elements.

This approach facilitates service work and helps maintain the consistency of the entire alarm system, which is important both from a security perspective and for subsequent diagnostics.

Expanding knowledge and selecting Audi components

If you are interested in a broader context of technical solutions used in sports variants of Audi and the differences between standard and more advanced versions, it is worth checking out the material describing powertrains, braking systems, and chassis – details can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?.

If you are planning a comprehensive repair or upgrade of the interior security zone in your Audi and need other elements from the same group, such as additional sensors, control modules, or alarm system components, check out the available parts in the category Other Audi.