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Now fast forward to a week ago after a hot month of August. My wife has been driving the civic to work because her commute is ~10 miles where as mine is less than half a mile. The civic constantly gets 55mpg with her driving which I'm happy with. She called me when she got to work and said the check engine light came on and the IMA light is on and the battery guage went from full to zero bars. Over the next few days of driving the mpg went down to 48 and has basically stayed there. The IMA battery continues to charge up fully and discharge when you stomp on it but I'm guessing the battery is going bad?
How do I go about healing this thing? I've read about a "super brain 989" and grid charging and taking the batteries out of the civic and charging and discharging them but I really don't know where to start or how to do it. Can someone shed some light on this for me as to what to start with and what to buy? I appreciate it!
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