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Put my Giulia in for its 2 year service yesterday. I complained that despite repeatedly recharging the battery the stop/start stops working within a day . (Yes I put CTEK connections as prescribed and no it’s not a great loss). According to this forum it’s time for a new battery. The techo however explained that after a recharge you need to reset the IBS by both unplugging the negative terminal as well as the IBS just behind it, and wait 30 seconds before replugging. He said it was a common problem sorted with this simple fix. So far it seems to have worked but that’s the first I have heard of it, and that’s not what it says in the manual. Anybody else know about this?
 

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.... The techo however explained that after a recharge you need to reset the IBS by both unplugging the negative terminal as well as the IBS just behind it, and wait 30 seconds before replugging. He said it was a common problem sorted with this simple fix. So far it seems to have worked but that’s the first I have heard of it, and that’s not what it says in the manual. Anybody else know about this?
not required, assuming you charge correctly via the IBS (which is why you should do so ;) )
 

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Put my Giulia in for its 2 year service yesterday. I complained that despite repeatedly recharging the battery the stop/start stops working within a day . (Yes I put CTEK connections as prescribed and no it’s not a great loss). According to this forum it’s time for a new battery. The techo however explained that after a recharge you need to reset the IBS by both unplugging the negative terminal as well as the IBS just behind it, and wait 30 seconds before replugging. He said it was a common problem sorted with this simple fix. So far it seems to have worked but that’s the first I have heard of it, and that’s not what it says in the manual. Anybody else know about this?
Disconnecting the IBS forces it to relearn and will temporarily fix any issue that is being caused by a reported low SOC.( state of charge)

As soon as it relearns, if the SOC is low, any issues will return.... so I suspect your ESS will again become inoperative.

It is not a fix and if your guy thinks it is, he does not understand how the system works.
 

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at least when servicing brakes, service manual says to disconnect IBS sensor plug first before disconnecting battery negative terminal. my guess is it's so IBS won't need long reset procedure.
also when charging through terminals on battery you put charger at green arror so charge will pass IBS, not red arrow. FCA manual says so, also applies to other cars with IBS sensor (BMW, VAG)

110634


in proxi there is setting which defines what type and size of battery car has.
 

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Are you sure ? Haven't seen it anywhere...... ;)
No I'm not. Still need to see body configuration/option list with Witech. For now it's just guess from comparing different proxi configs that byte 63 has something to do with it.
Also other brand cars with IBS sensors have a way to set battery type and capacity as they require different charging strategies. It's even required when changing battery.
 

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Also other brand cars with IBS sensors have a way to set battery type and capacity as they require different charging strategies. It's even required when changing battery.
yes, i have wondered why Giulia does not have this - or if it does why it is not done - it could be the source of a lot of "problems" so soon after a battery change
 

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yes, i have wondered why Giulia does not have this - or if it does why it is not done - it could be the source of a lot of "problems" so soon after a battery change
Had similar thoughts too.
For example when changing battery on BMW you set battery type, capacity and also set flag that battery is new. Otherwise car thinks it still has old battery and charges it accordingly to old battery parameters which results charging errors and faults like replace old battery due to not enough charging.
 

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Put my Giulia in for its 2 year service yesterday. I complained that despite repeatedly recharging the battery the stop/start stops working within a day . (Yes I put CTEK connections as prescribed and no it’s not a great loss). According to this forum it’s time for a new battery. The techo however explained that after a recharge you need to reset the IBS by both unplugging the negative terminal as well as the IBS just behind it, and wait 30 seconds before replugging. He said it was a common problem sorted with this simple fix. So far it seems to have worked but that’s the first I have heard of it, and that’s not what it says in the manual. Anybody else know about this?
from this thread
Somebody please explain IBS battery charge status to me

comes this
Somebody please explain IBS battery charge status to me

in that pdf is the info about resetting the IBS


IBS learning needs 1-2 key cycles and 2-4 hours of quiescent/sleep time(no charge in or no charge out of the battery).
Quiescent (Sleep)time is defined as <250mA +-50mA.(no added loads).
 

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from this thread
....
yes, the service doc explains that, when power is removed from the IBS, upon reconnecting it goes into an automatic calibration phase where it determines the parameters for the connected battery. It does this during a certain amount of time, and a number of start cycles. During this time it assumes a number of default parameters.
Nowhere will you find any mention of setting battery parameters. With the latest IBS sensors, this is apparently an automatic process....

from service description:
When the IBS is powered up for the first time or is powered after a power disconnection, it enters a
“recalibration” phase, where the IBS must recognize the type of battery and its characteristics and state. In
this phase the tolerances on the state functions (SOC, SOF) are greater than in normal working condition.
When IBS is disconnected from the battery, the device loses its stored memory. When power is restored,
the IBS starts a relearn process. Until the relearn process is complete, accurate battery state information is
unavailable to other vehicle systems. The IBS relearn process requires one start and at least 4 hours of
quiescent time (vehicle off, electrical system asleep). Remember, the relearn process is restarted every
time power is reconnected to the IBS. This has a major effect on the stop/start feature.

But maybe there's something hidden in Witech..... It's not in MES

Of course the standard range of batteries is not that big, either 80 or 95 Ah, AGM or EFB
 

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Why use the start stop system? I find it so annoying damn.. sometimes i forget to disable it, then i stop for the red light and 0.5 sec later its green..... so for that 0.5 sec the car shuts down 🤦🏽‍♂️
 

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Why use the start stop system? I find it so annoying damn.. sometimes i forget to disable it, then i stop for the red light and 0.5 sec later its green..... so for that 0.5 sec the car shuts down 🤦🏽‍♂️
That's why I use the disable gadget ;)
 

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Why use the start stop system? I find it so annoying damn.. sometimes i forget to disable it, then i stop for the red light and 0.5 sec later its green..... so for that 0.5 sec the car shuts down 🤦🏽‍♂️
its not just the ESS that stops working, its the rear window demister and possibly the turbo cool down electric motor could shut down prematurely

the ESS is just the first indicator that you need to check the battery
 

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The problem I find with the instructions to disconnect the IBS cable is I cannot get that connector to release without taking the IBS off of the battery post first. Once I get clear access it pops off easily. Is there some trick that I am missing?

I thought resetting IBS was something you needed to see your doctor about...
 

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The problem I find with the instructions to disconnect the IBS cable is I cannot get that connector to release without taking the IBS off of the battery post first. Once I get clear access it pops off easily. Is there some trick that I am missing?

I thought resetting IBS was something you needed to see your doctor about...
of course if you take the ibs of the battery post, you automatically disconnect the negative post and don't need to disconnect IBS anymore as that's already done ;)
 
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