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a common yet missed/overlooked reason for the alarm to false is to look under the hood and you should find a Mercury light attached to the under side of the hood. if this light is misadjusted or your parking on a steep hill that will cause the alarm to go off after the engine cools

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2015-07-15 19:56:09
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Q: How do you stop the alarm from going off by itself in a 98 Ford Expedition?
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