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Agreed, lets see why you got an IMA light. Have you had the dealer check the codes or a auto store? Sometimes the IMA light means you got a bad or weak battery, other times it means a squirrel ate through a wire, the MDM is bad, BCM is bad, or even a bad ground can cause the light.
If its a P0A7F, then a grid charger or battery replacement is in your future. Basically charging the pack to a peak voltage at ,350 ma helps to put the cells back in balance. You have hundreds of cells in series like a big mag light and one bad cell will ruin the whole pack. Just how one bad battery makes your 6 d cell mag light go dim. These charges helps to bring this bad apple back up to snuff.
Plan B? Just disconnect the battery every 400 miles or so and make sure you have your radio code. Again, this only works if its a bad ima battery.
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