2012 5.0 no start after key being left forward
10-13-2017, 10:06 PM
#1
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2012 5.0 no start after key being left forward
I have a 2012 fx4 with the 5.0. My son was out listening to the radio in it and a week later I went to drive it and he had left the key turned all the way forward. Try to jump it and even with the key out of the ignition the radio and dash lights come on. Put the key in and try to start it and nothing changes. What can I do to get this to start????
10-13-2017, 10:16 PM
#2
Senior Member
Re-charge the battery. *Has enough juice to illuminate dash lighting, but not enough to start the vehicle.
*HEADS-UP* regarding charging the battery ...
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*HEADS-UP* regarding charging the battery ...
When charging the vehicle battery by connecting the charger to the negative battery terminal is necessary, such as when using a combination battery charger and battery tester/analyzer, like the GR 1 190 V3.0 Intelligent Diagnostic Charger, the BCM will not immediately update the battery state of charge. In this instance, after charging, you must carry out the Battery Monitoring System (BMS) Reset using the scan tool. This reset is needed for proper engine off load shedding and to prevent invoking of engine off load shedding earlier than normal.
NOTE: If the reset is not carried out, when the battery is charged by connecting the charger to the negative battery terminal, it takes approximately 8 hours for the BCM to learn the new battery state of charge. During this 8 hour period, the vehicle must be undisturbed, with no doors opened or keyless entry button presses. If the vehicle is used before the BCM is allowed to learn the new battery state of charge, engine off load shedding can still occur and a message may be displayed.
When charging the vehicle battery by connecting the charger to engine or chassis ground, the negative charger clamp must be connected to an unpainted chassis surface or a solid engine component such as a generator mount or engine lifting eye. In this instance, after charging, the BMS Reset is not required. Through this method of charging the BCM will update the battery state of charge during the charging process.
PostScript: Remember to remove the key from the ignition during the re-charge. And ... don't allow son access to it in the future.NOTE: If the reset is not carried out, when the battery is charged by connecting the charger to the negative battery terminal, it takes approximately 8 hours for the BCM to learn the new battery state of charge. During this 8 hour period, the vehicle must be undisturbed, with no doors opened or keyless entry button presses. If the vehicle is used before the BCM is allowed to learn the new battery state of charge, engine off load shedding can still occur and a message may be displayed.
When charging the vehicle battery by connecting the charger to engine or chassis ground, the negative charger clamp must be connected to an unpainted chassis surface or a solid engine component such as a generator mount or engine lifting eye. In this instance, after charging, the BMS Reset is not required. Through this method of charging the BCM will update the battery state of charge during the charging process.
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10-14-2017, 06:15 AM
#3
Old Fart
Might also need to replace the battery if it does not take a charge, it sounds like yours is doing the same as what my Mustang did when it died completely.