Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Brake Fluid Level Switch
Remove brake fluid reservoir cap (cap and switch are an assembly). Check that float on cap moves up and down freely. Use DVOM to check for continuity between switch terminals. With float in down position (empty), continuity should be indicated. Turn cap upside-down to move float to up (full) position. In up position, continuity should not exist. If continuity is not as specified, replace reservoir cap.
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.