Question about 2003 Mercury Grand Marquis

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I don't know why the lights won't come on. When I

I don't know why the lights won't come on. When I hold the dimmer stick up the bright lights work. That is the only way they will come on.One machanic told me I needed a module. Help me please.

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I have a 2003 Mercury Grand Marquis that has the same Headlight problem. We found out it was the headlight module located under the dash above the gas pedal. The part is a black box with wires connecting to the back. At first I just tapped it and they came back on but with time it got worse. I've had to sit with the car running for up to 30 minutes or longer to wait for them to stay on for my 45 minute trip home. I can't turn the car off (pumping gas) or I have to wait again for them to stay on. The dealership wants 500.00 to replace the module, I can't afford to pay this overpriced fee for a faulty part they installed in my American made vehicle. It should be on recall as it is a serious danger while driving, but unfortuneately someone will have to die as a result of this equipment failure for it to be recalled. The module is not that hard to remove but there is no visible way to repare it that we could see. We cleaned the connections and used electrical grease to try to improve the connections. It helped for a short time but the problem still exists. I have left my car running while on a short shopping trip with the doors locked to prevent the frustration of beating the **** out of the box with my flashlight or waiting out the warm-up time it takes for them to stay on till I get home or holding the dimer switch on the stearing column on bright for the entire trip home, somewhere along the way I can kick the box and they will come back on and hopefully stay on.

Posted on Dec 31, 2009

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Check for power at low beam head lights with a test light and head lights on ,if power is there,replace low beam bulbs.if no power check headlight switch with test light for power going out for low beam,if power is there replace multi function switch,if no power leaving head light switch,replace switch

Posted on Dec 11, 2009

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