2008-2018 Audi All Models Brake Light Switch Used OEM 4F0945459B

Genuine Audi OEM brake light switch (part number 4F0945459B). This switch is mounted near the brake pedal and signals to the vehicle’s systems when the brake pedal is pressed. It controls the activation of the brake lights, disables cruise control when braking, allows the engine to start (in some models) and ensures proper signaling to other systems. A faulty switch may result in brake lights not illuminating, cruise control staying locked, or shifting / start interlocks malfunctioning.

Details:

• VIN: WAUBHC4G5CN026396

• Part Number: 4F0945459B (OE 4F0-945-459-B)

• Compatibility: Fits many Audi models (A4, A5, A6, A7, A8, Q5, Q7, etc.) across multiple years.

• Function: Brake light / brake pedal switch -- detects brake pedal travel, triggers brake lights, interacts with cruise control / engine start logic.

• Condition: Used OEM -- inspect plunger / switch actuation, terminal pins for corrosion, housing intact without cracks.

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Always buy OEM!
OEM parts are built to factory specifications, ensuring the right fit, performance, and safety compared to aftermarket alternatives. We sell parts pulled from the vehicles. They are 100% compatible with original part numbers incase if you are looking to substitute part, please check with your car's part number and catalog.

⚠️ Fitment Note: Please verify compatibility with your vehicle’s VIN before purchase.