Help keep your brake lights in step with the pedal with this Standard Ignition switch, the SLS-309 Brake Light Switch / Stoplight Switch. It is a direct-fit replacement for the 1999-2003 Ford Windstar, 2004-2007 Ford Freestar, and 2004-2007 Mercury Monterey. See the "Vehicles it fits" section for engine-specific details.
A brake light switch operates the brake-light circuit when the brake pedal is applied, so drivers behind you can see that you are slowing. Standard Ignition lists this part as a stoplight switch, so you may find it under either name.
Signs this switch may need replacing include brake lights that stay on, brake lights that do not come on when the pedal is pressed, and lights that work only intermittently. Diagnose the circuit first, including bulbs, fuses and wiring. If a failed switch is the cause, the SLS-309 replaces it.
Interchange: SL2049 · 8746 · F4862 · SL859 · 3F2Z13480BA · 3F2Z13480BB · 3F2Z13480CA · 3F2Z13480CB · SW5433 · SW6081 · SW6135 · SW6218 · XF2Z13480AA
This part cross-references / interchanges with the following part numbers:
What does a brake light switch do?
It operates the brake-light circuit when you press the brake pedal, so the stoplights come on to warn drivers behind you. Standard Ignition calls this part a stoplight switch.
Which vehicles does the SLS-309 fit?
It is listed for the 1999-2003 Ford Windstar, the 2004-2007 Ford Freestar, and the 2004-2007 Mercury Monterey. See the "Vehicles it fits" section for engine-specific details.
Is this the right switch for a 2004-2007 Mercury Monterey?
It is listed for the 2004-2007 Mercury Monterey. Check the "Vehicles it fits" section for engine-specific details.
What are signs of a failing brake light switch?
Warning signs include brake lights that stay on, do not come on when you press the pedal, or work only intermittently. Check the bulbs, fuses and wiring first to confirm the cause.
Is the switch tested?
Yes. Standard Ignition 100% tests its stoplight switches to verify both mechanical and electrical switching performance.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
