Details

• Brand:

  

• SKU:

  0Z3-909-107-S

• Other Names:

  Control.Unit

• Description:

  The Genuine Audi/VW Control Unit 0Z3909107S OEM is a factory-engineered battery monitoring electronic module designed to manage and optimize vehicle power distribution and charging functions. This intelligent module continuously tracks battery voltage, temperature, and current draw, ensuring stable electrical performance for modern Audi and Volkswagen systems.

  Built to meet OEM specifications, this control unit communicates directly with the vehicle’s CAN bus network to regulate alternator output, prevent overcharging, and maintain system readiness for stop/start, hybrid, or high-load power configurations. The 0Z3 909 107 S unit is installed directly on or near the battery negative terminal, providing accurate data for power management and energy recovery systems.

  Key Features & Benefits

  • Genuine Audi/VW OEM Quality – Factory original control module for guaranteed compatibility.

  • Smart Battery Management – Monitors voltage, current, and temperature for efficient energy flow.

  • CAN Bus Communication – Sends live power data to the ECU and charging systems for load balancing.

  • Enhanced System Reliability – Prevents low-voltage conditions and ensures battery longevity.

  • Plug-and-Play Installation – Direct replacement with OEM connector fitment; no reprogramming needed (in most cases).

  Compatibility / Fitment

  • Compatible with a wide range of Audi and Volkswagen models equipped with intelligent battery management systems, including:

    • Audi A3 / A4 / A5 / A6 / Q5 / Q7 / e-tron series

    • Volkswagen Golf / Passat / Tiguan / Atlas / ID-series EVs

  • OEM Part Number: 0Z3 909 107 S

  (Confirm compatibility by VIN or OEM diagram before ordering.)

  Installation Notes

  • Disconnect the negative battery terminal before installation.

  • Mount securely to the factory battery sensor housing or bracket.

  • Ensure all electrical connectors are clean and properly seated.

  • If required, reset the vehicle’s power management system after installation using OEM diagnostic software.

  Why Choose Genuine OEM

  Aftermarket modules often lack the correct communication protocols and calibration used in Audi and VW vehicles, leading to false warnings or improper charging behavior. The Genuine Audi/VW 0Z3909107S Control Unit guarantees perfect CAN network integration, durability, and the same performance your vehicle had when new.

• Notes: Included with isolator.

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