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Old 12-03-2012, 12:25 AM   #11 (permalink)
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I had my car start off the 12v once before when I'd badly overheated the IMA batteries while grid charging them.
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Old 12-03-2012, 09:28 AM   #12 (permalink)
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Default 12V start- overiding the IMA

Is it the thermistor device located under the front bumper for indication of ambient temperature?

If that is faked, will the car start on 12V and not IMA?
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Old 12-03-2012, 09:38 AM   #13 (permalink)
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I wouldn't worry about it. Isn't the starter & alternator the same thing? If it had stopped working, you'd have a car with a discharged 12volt battery and no working radio, wiper, etc.
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Old 12-03-2012, 09:52 AM   #14 (permalink)
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Quote:
Originally Posted by theaveng View Post
Isn't the starter & alternator the same thing? If it had stopped working, you'd have a car with a discharged 12volt battery and no working radio, wiper, etc.
No, the Insight has no alternator. Its 12 v. starter is just a normal starter motor. The 144 v. IMA motor is also a generator. As a motor, it can start the engine or assist the engine in moving the car. As a generator, it can recharge the 144 v. battery pack while decelerating the car.
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Old 12-03-2012, 01:46 PM   #15 (permalink)
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So is it recommended to occasionally start with 12v just to keep starter from freezing? (Flip IMA switch, start a couple times, and return switch to normal ON position). I have a 2010 EX and have never had the 12v start the car. Any problems with my scenario?


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Old 12-04-2012, 02:26 AM   #16 (permalink)
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Quote:
Originally Posted by E27006 View Post
Is it the thermistor device located under the front bumper for indication of ambient temperature?

If that is faked, will the car start on 12V and not IMA?
It's most likely the HV pack temperature that determines the hot and cold cutoffs for 12 volt starter, as the HV pack is what's being protected...
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Old 12-04-2012, 02:28 PM   #17 (permalink)
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Just disconnect the 12V battery overnight. The computer will "forget" the SOC of the high voltage battery and assume it is zero. Then it will use the standard starter. That's how my 2002 worked whenever I left it sit too long and the 12V battery had died.
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Old 12-04-2012, 03:14 PM   #18 (permalink)
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What will happen if do flip the switch and start it?

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Old 12-04-2012, 07:49 PM   #19 (permalink)
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You are posting that question on the G1 forum, You might try the G2 forum, Some people don't read all the threads, just those that pertain to their model.

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Old 12-04-2012, 08:48 PM   #20 (permalink)
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Oops. The app can be tricky.

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