1966 Mercury Commuter 6.4L Eng VIN P, Automatic TransFACTORY OEM SERVICE PROCEDURE

Low Brake Indicator Switch: Adjustment

Switch is a combination Cruise Control and Low Brake Indicator Switch, even on cars that are not equipped with Cruise Control. If Cruise Control portion of switch is adjusted, then Low Brake Indicator portion of switch will automatically be adjusted. Remove connector from switch and connect a self-powered test light across the two bare terminals. Test light should be ON when brake pedal is released, and should go OFF when brake pedal is depressed approximately one half inch. Loosen switch mounting screw to adjust.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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