Constant control
1. In the Audi A4, too low a brake fluid level is also indicated by a control light on the dashboard, but nevertheless you should not give up visual control:
2. Open the hood and wipe the brake fluid reservoir with a rag.
3. In a transparent expansion tank, the brake fluid level must be between the marks «min» And «Max». In this case everything is fine.
Is the brake fluid level too low?
If the disc brake pads are already a little worn, then there is a tendency for the fluid level to drop down to the bottom mark; if they are new, then the liquid level again exceeds the upper mark. This is completely normal, because with worn linings, the disc brake pistons that have advanced a little further leave a larger volume in the brake caliper cylinders, which is filled with brake fluid. The situation becomes critical when the brake fluid level in the reservoir drops below the mark «min». Since it does not evaporate and is not consumed, that is, the place of leakage. Quickly find out the cause before the brake pedal fails! Topping up would be a fraud!
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