Last night at 93,693 miles, the engine check light and the IMA light appreared. The autostop would not activate. Battery indicated full charge, but the Assist/Charge bar was out. Car drove normally and even seemed to have less of a performance drop off then when it recals (that has no occurred in about three months).
Got 80mpg on my 25-mile work commute this morning without an IMA. Lute Riley in Richardson took several hours and $250 to find out:
- IMA battery - out
- MCM - out
- BCM - out
Codes: 1644 and 1600
The estimate cost for parts and labor was $6,400.

Warranty for the 2000 Insight was 80,000. After discussions with the Service Manager, a deal was made that Honda would pay for all but $450 and my rental car.
It's early, but they talk as if it could be repaired as early as this weekend. If they do - it's incredible.
Hopefully the batteries and unit will be superior to the OEM. Have not gotten an answer, but if the techs have a clue to long battery life - I'll pass the word.