Non-Pressure Leaks
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The only part of the brake system that could have a brake fluid loss that does not appear when the system is under pressure is the brake master cylinder reservoir under the following conditions:
- missing or poorly-fitted brake master cylinder filler cap.
- punctured or otherwise damaged brake master cylinder reservoir.
- missing or damaged brake master cylinder filler cap gasket.
- missing, damaged, or poorly-fitted sealing grommets between the brake master cylinder and the brake master cylinder reservoir.
The brake master cylinder reservoir grommets are not repairable and must be installed new as part of a new brake master cylinder reservoir.