IMA Battery behaviour - Honda CRZ Forum: Honda CR-Z Hybrid Car Forums
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post #1 of 22 (permalink) Old 02-27-2017, 07:19 AM Thread Starter
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IMA Battery behaviour

Hi Everyone.

I have a query on the IMA battery...

Is is normal for the battery to loose bars overnight for example; from 4 to 1 on the dash indicator?
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post #2 of 22 (permalink) Old 02-27-2017, 10:48 AM
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Quote:
Originally Posted by DazGizmo View Post
Hi Everyone.

I have a query on the IMA battery...

Is is normal for the battery to loose bars overnight for example; from 4 to 1 on the dash indicator?
We would need to know more information.

How long did it sit?
What was the temp?
How often is this happening?
Age/Milage of car?

In general, no that is not normal. If it happened only once I would not worry to much as some times this will happen as the battery level is recalibrated. I have seen this once when my 2011 sat over night and most of the previous day in a very cold day (I think the high was like 2 degrees F).
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post #3 of 22 (permalink) Old 02-27-2017, 12:22 PM
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I have had the meter drop one or two bars over night but the temperature went from like 60 degrees f to below freezing.

We would need more information and there was a software update for this kind of issue for some Model years. you may want to research and see if your year needed it and if it has been done.

Quote:
Originally Posted by DazGizmo View Post
Hi Everyone.

I have a query on the IMA battery...

Is is normal for the battery to loose bars overnight for example; from 4 to 1 on the dash indicator?
DazGizmo likes this.
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post #4 of 22 (permalink) Old 02-28-2017, 02:03 PM
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I've not noticed anything like that since I had the "Battery Memory" re-program done. It was a recall campaign here in the US on I think 2011-2012...

Before that, it wasn't uncommon to see a 1 or 2 bar drop overnight.
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post #5 of 22 (permalink) Old 02-28-2017, 02:44 PM Thread Starter
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The bar drop overnight I think was a one off I think...

Spec
CR-Z GT 2011, 43500 miles, Temp 2 to 3 degrees Celsius

But the drive into work and then back home the battery seems to go into a discharge (eco mode). After 10-15 minutes driving when in traffic it gets to three bars then quickly goes to none in a few seconds. The engine then revs to about 1300-1400 rpm to force a charge into the IMA battery. Obviously the IMA stops working inc. Auto Stop until two bars are displayed... then it seems normal after this...

Is this normal behaviour?
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post #6 of 22 (permalink) Old 02-28-2017, 02:59 PM
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This does not sound normal for your model year. Check your manual but the IMA system should have a 8year 80k warrantee and if that is the case take it in to the dealer. Also make sure all updates have been done for the IMA system
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post #7 of 22 (permalink) Old 02-28-2017, 03:08 PM Thread Starter
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Originally Posted by Eagle_f90 View Post
This does not sound normal for your model year. Check your manual but the IMA system should have a 8year 80k warrantee and if that is the case take it in to the dealer. Also make sure all updates have been done for the IMA system
IMA Warranty - Not in the UK as we only have - 5 years or 90,000 miles, whichever comes first, for 11YM onwards Civic Hybrid, CR-Z, Insight and Jazz.
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post #8 of 22 (permalink) Old 02-28-2017, 03:17 PM
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Ok, I thought Honda did that world wide even though it was a US only requirement.

As far as I know the old NiMH batteries should not be dropping that fast and the computer was setup to prevent it from dropping below 2 bar. It sounds like there is something wrong.
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post #9 of 22 (permalink) Old 02-28-2017, 03:26 PM
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One word---------> Dealer
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post #10 of 22 (permalink) Old 02-28-2017, 04:57 PM Thread Starter
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Sounds like it could be normal... I do have the radio on and the heating on in Auto mode...

Found this and it similar/same as what is happening to me - Battery question
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