Volkswagen Passat B7 Golf Mk6 Roof Alarm Sensor Module 3C0951171C

Volkswagen Passat B7 Golf Mk6 Roof Alarm Sensor Module is an original component from the Electronic control modules and controllers group, designed for the vehicle's factory security system. It enables the alarm to function correctly, ensuring stable interior monitoring and consistency with the rest of Volkswagen's onboard electronics.

Specifications and technical data

• SKU: 3C0951171C
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3C0951171C
• Substitutable numbers: 3C0951171C, 3C0 951 171 C
• Part type: Central Timing Module
• Category: ECUs & Computer Modules

Module purpose and function

The presented alarm sensor module is responsible for processing signals from the security system sensors in Volkswagen models such as the Passat B7 or the sixth-generation Golf. As part of the factory electronic system, it works in conjunction with the central convenience control unit and the alarm installation, allowing for the full functionality of the original anti-theft system to be maintained.

By using an original module, proper communication within the vehicle's bus is preserved, which minimizes the risk of errors, warning messages on the dashboard, and issues with arming or disarming the alarm.

Advantages of using an original module

Choosing an original Volkswagen alarm sensor module primarily offers:

• consistency with the vehicle's factory electrical architecture,
• proper cooperation with existing controllers and the alarm installation,
• preservation of comfort and safety functions intended by the manufacturer,
• reduced risk of coding and diagnostic issues.

A component from this group is particularly important during repairs following interference with the electrical installation, after collisions, or when replacing faulty alarm components, when maintaining the vehicle's original configuration is a priority.

Condition and installation aspects

The module comes from dismantling and is offered as a used original component, which allows for a reasonable cost while maintaining factory build quality. This type of controller is generally mounted within the existing vehicle harness using factory connectors, which facilitates installation and limits the need for modifications to the wiring.

Before installation, a standard procedure is recommended: verifying compatibility via the OEM number, checking the vehicle's equipment configuration, and – if necessary – adaptation or coding using an appropriate diagnostic tester, in accordance with Volkswagen service procedures.

Selection by OEM number and vehicle compatibility

To ensure full compatibility with a specific version of the Passat B7 or Golf Mk6, it is worth verifying the module markings against the vehicle data (e.g., via VIN and part number). This helps avoid communication issues within the vehicle network and ensures proper cooperation with other control units.

If you want to check step-by-step how to properly match electronic components by OEM number and VIN data, the following guide will be useful: how to select the right car part by VIN and OEM number. You will find practical tips there on what to pay attention to when purchasing used electronic modules.

Expanding knowledge about electronic modules

In the case of more advanced multimedia systems and convenience controllers, it is worth learning good practices for handling electronics in modern cars. A detailed discussion of issues related to control modules, diagnostics, and the use of parts from dismantling can be found in the article: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using parts from dismantling?. Although the description concerns BMW, the principles of working with electronics and control modules presented there are also helpful when servicing vehicles of other brands.

Related Volkswagen electronic control modules and controllers

If you are planning a comprehensive repair or upgrade of the onboard electronics in your Volkswagen and need other elements from the same group, such as convenience controllers, body modules, or additional control units, check the available parts in the Volkswagen electronic control modules and controllers category.