Actuator Pin Information
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
The actuator pin must always be pushed in the hole in the brake master cylinder directly on the Brake Pedal Position Sensor -G100-.
Do not bend the actuator pin,
If this pin is missing or is damaged, the brake lamp will not function.
The actuator pin cannot be replaced separately.