* Brake lights: These will have a fuse in the underhood fuse box. The owner's manual should specify which fuse controls the brake lights. Look for fuses labeled "Brake Lights," "Stop Lamps," or something similar.
* Brake light switch: This is a mechanical switch and doesn't usually have a dedicated fuse, but a malfunctioning switch can cause brake light problems.
* Anti-lock Brake System (ABS) (if equipped): If your Mark VII has ABS, it will have its own dedicated fuses and possibly even relays. These will be in the underhood fuse box, possibly labeled "ABS" or similar.
To find the relevant fuses:
1. Consult your owner's manual: This is the best resource. It will have a fuse box diagram showing the location and function of each fuse.
2. Locate the underhood fuse box: It's usually in the engine compartment, often near the battery.
3. Inspect the fuses: Look for any blown fuses (a broken filament inside the glass). If you find a blown fuse, replace it with one of the same amperage rating. Do not replace it with a higher amperage fuse.
4. If you have problems: If replacing fuses doesn't solve the problem, you likely have a more serious electrical or mechanical issue with your braking system. It's crucial to have a qualified mechanic diagnose and repair any brake problems. Brake failure is extremely dangerous.
In short, don't just look for a "brake fuse." Use your owner's manual to identify the fuses related to brake lights and the ABS (if equipped) and check those.
