Question about 1998 Mercury Villager

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1998 Mercury Villager Break light switch

I replaced the lower break light switch on my 1998 Mercury Villager as the old switch would cause the break lights to stay on even after i stopped the vehicle running my the battery down. Once I replaced the switch it solved the problem for a day but the next morning I found my battery dead again. The problem seems to be the switch because the lights shut off after I remove the fuse for same. Do I have a short? I can't imagine that the switch I purchased is bad also.

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  • kevinseborg Apr 23, 2009

    Yes, turn signals work.
    Yes, high mount stop light does this too.
    Yes, lights go out when brake light switch is disconnected.
    Yes, lights also go out once fuse for same is removed.
    Yes, I have a trailer tow but have never used it.

    This morning I couldn't get lights to go out when I put the fuse back in. Previously they would go out, function perfectly all day but sometime during the night lights would randomly come on and drain my battery. For some reason lights seem to go on when outside temp. gets colder. Could this be due to a dry solder somewhere in the circuitry?

    I don't think switch is out of position as I've adjusted several times. Why does this vehicle have (2) switches?
    Where is the wire near trailer tow? What should I look for?

  • Anonymous May 14, 2009

    I have the same problem and it is due to broken spring on the brake pedal. The pedal now rest on the brake light switch and makes it turn one. Fix it with a bungee cord around the brake pedal and to the frame of the dash. I know it is not the right answer but it works and has pass inspections as long as the cord is high on the pedal.

  • wlr63noles Sep 14, 2009

    ok I have a 95 villager , the brake lights stay on even when they are unpluged ( main harnest to back ) cant find any shorts in wiring . Have noticed that harnest runs on top of fuel tank , Not sure what is under there



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Go here for help.

Brake light circuit goes through turn signal switch. Do turn signals work ok? Does high mount stop lamp do this too? If you disconnect brake switch, do the lights go off? Do you have trailer tow? Maybe that wire is an issue. I would check brake switch first again. Maybe out of position.

I think you need to adjust the switch.


  1. Install the BPP switch.
  1. Adjust the BPP switch. Refer to the procedure in this section.
  1. Tighten the BPP switch locknut to 12-15 Nm (9-11 lb-ft).
  1. Connect the BPP switch electrical connector.
  1. Connect the battery ground cable.
Section 17-01: Lighting, Exterior 1998 Villager Workshop Manual
ADJUSTMENTS Brake Pedal Position (BPP) Switch
  1. Measure the distance between the brake pedal stopper and the threaded end of the brake pedal position (BPP) switch. The BPP switch height (A) should be 0.3-1.0mm (0.012-0.039 inch).

1998 Mercury Villager Break light switch - ce51ecc.gif

  1. If the BPP switch height is not within specification, loosen the BPP switch locknut.
  1. Adjust the BPP switch until the height is within specifications.
  1. Tighten the BPP switch locknut to 12-15 Nm (9-11 lb-ft).
STOPLAMPS Condition Possible Source Action
  • Stoplamps/Rear Hi-Mount Lamp Inoperative
  • Fuse.
  • Circuit.
  • Brake pedal position (BPP) switch.
  • GO to Pinpoint Test Step K1 .
  • One or More Stoplamps Inoperative
  • Stoplamp bulb(s).
  • Circuit.
  • GO to Pinpoint Test Step L1 .
  • Stoplamps/Rear Hi-Mount Lamp On Continuously
  • BPP switch.
  • REPLACE the BPP switch.


Posted on Apr 20, 2009


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most likely the parking brake shoes need to be replaced. they have a tendency to rust and break off and the brake wont hold

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SOURCE: 1998 S10 rear break lights and blinkers do not work.

i had a similar problem, and it was the turn signal lever assembly. Get rude with the lever testing the turn signals, and see if it works. Mine specifically had a problem in the very end of the lever. I swapped it out, and brake and turn signals worked like they were supposed to. Also, make sure you disconnect your battery before swapping the lever assembly, as your truck will enter into security mode when the ignition assembly is removed for access.

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