Question about 1993 Mercury Grand Marquis
Well if your radio has been reset then that means your radio lost 12Volt power. Your battery may be on its way out the door. Sometimes in extreme cold weather, batteries that are older will exhibit this kind of behavior. Batteries rely on a chemical reaciton to produce the current and voltage needed for operation. At colder temperatures that chemical reaction slows down which in turn reduces the amount of availble current. Take your car to an autozone or advance auto and have them check it for free.
Posted on Feb 02, 2010
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Posted on Jan 02, 2017
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Try this, put the key in the ignition and let it be on the first
turn right marked "ACC" or you can turn off the stereo and you will notice that
only the Digital Clock screen will show. Turn the Volume/Audio/Sel knob and press
on the "DISP" button simultaneously for about 4 seconds then release the "DISP"
button. The digital clock will start blinking, and then use the Tune/Seek
arrows pointing up and down to change the time. If the hour digit is blinking change
the hour and after you have changed it press "DISP" then the minute digit will
start to blink change it using the arrows, when you are done press "DISP" again
or leave the clock for between 4 to 8 seconds the clock will start working
I hope this works for you.
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