Is battery IBS needed?

[DieselDog]

A few months ago I did the aux battery delete while my ECU was out and being worked on. Since the ECU was gone for a month, when I connected everything back up I had kind of forgotten about the IBS and although I had it connected to the battery, the electrical wire plug connection for it was undone. I thought it weird for this vehicle that my alternator was putting out a pretty constant 14.9v. Then, twice while pulling a long hill on the highway, I got a check engine light and a code for turbo van actuator (ecodiesel). I started monitoring my turbo vane commanded vs actual position, and they were always within 1% of each other and moving around as they should be. While investigating under the hood, I found the disconnected IBS and plugged it back in. I have not had a check engine light since then. A.I. confirmed that without the IBS the vane actuator could have been receiving voltages that were out of the norm and easily caused the CEL.

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[TheRealChad]

Cleaner visually? You could fabricate an abs cover to hide the battery and wiring if you just want a visually simpler engine bay like on a street rod.

You have me interested … but I’m not sure I’ve ever seen one. Got a pic?

 

[Terrymo]

You have me interested … but I’m not sure I’ve ever seen one. Got a pic?

I’m guessing it would have to be fabricated. Sorry. No pic. Just brain storming.

 

[THAW]

IBS SOC is used for all sorts of BCM things (e.g. disabling ESS and AUX Switches). Presumably null SOC data will create many (perhaps minor) issues.

 

[TrailMax]

But does it help anything? I do not have the aux battery (2023 392), but do have a lithium battery. Without it I can ditch that oem terminal post attachment and go to a cleaner solution. I suspect it would also keep the state of charge full right?

Instead of adding a post to use the OEM terminal, would you be able to mount it to one of the 'spare' terminals on the Kaas terminal block?

 

[THAW]

FYI, with that terminal extender/block your IBS isn't mounted correctly. The IBS should sit between the battery post and all ground wires.

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