The reservoir is made of transparent plastic, so the brake fluid level in it can be easily determined by eye. This level should always be between the "min" mark and the edge located along the perimeter of the tank.

Due to wear of the friction linings of the front disc brakes, a slight drop in the brake fluid level occurs. This is a normal phenomenon. If the brake fluid level drops significantly over a short period of time, this indicates a leak.
The leak location must be found immediately. Typically, such places are worn cuffs in the wheel brake cylinders. For safety reasons, you should entrust the system inspection to specialists at a service station or workshop.
[The original article is available at: www.VWMANUAL.ru]

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