The Citrus Smoothie said:
Resist, when a 12V battery is failing the DC-DC convertor keeps pumping juice into it regardless; ...
Which is true as far as it goes.
In most other cars this type of 12v battery failure is unusual. But in an Insight with its different 12v battery management it may be much more common. There have been numerous credible anecdotal reports of such. Just remember that if
your specific 12v _hasn't_ failed in this way a replacement won't fix it. Hence I support the "don't fix it if it ain't broke" philosophy.
Try an IMA reset first.
IMA reset procedure
http://www.insightcentral.net/encyclope ... orage.html
or simply disconnect the 12v for about 1 min (same thing accomplished as above but its "safer" than messing with the connections at the terminals).
If your problem _stays_ fixed for several days of "normal" driving then your 12v is OK for now and it was your MCM / BCM that slipped into what I refer to as the SoC doldrums. Like any computer sometimes they "glitch" and a reset is necessary.
The "problem" with simply replacing the 12v without this "extra" step is that since a disconnection accomplishes a reset you'll never know whether you wasted your money on an unneeded 12v battery.
HTH!
