I have a 2003 Mercury Mountaineer please help!! I have no auto lights, no power windows, no gauges no lights on the dash. I have checked battery, alt i do not have a manual thank you for your help
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cud be a bad fuse--there are some in engine area too--may hav to test each one----a flaw in the wiring also--or a module that controls the diffrent functions------aquire a service manual or a private shop is best direction
CHECK BATTERY CABLES AND FOR CORROSION,A BAD GROUND OR BAD CONNECTION WILL CREATE ENOUGH RESISTANCE TO PREVENT STARTER TO CRANK OVER ENGINE. IF BATTERY HAS 12V DOESN'T MEAN IT'S GOOD,IT COULD HAVE ON 100 CCA'S, NOT ENOUGH.
Have the battery tested, perhaps the alternator also. I had the same problem on my 2005 Taurus ( also a Ford / Mercury product ). I replaced the alternator easy enough, and a full charge on the battery solved the problem. The vehicles are designed to shut down unnecessary or non-vital accessories first, as to prevent a major shutdown on the road. So your lights and signals will still work, but the rest of the electrical will power down to conserve the battery.
You can get the battery tested at most service stations or you can buy a tester at any auto parts store. Some of them will test it for free.
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