HELP..car not starting at all, ibs error?

tofupwr · 07-19-2013, 06:39 PM

Hope someone can help. The 335xi is not starting at all and no light is on. It wasnt the first time. But previously the car started after awhile. This time it is not starting even after a day. My research is it might be the battery or the ibs. Checked voltage on battery, it is 12.7v. I think that is normal. Checked the ibs against ground, one is showing 5v and the other one is showing zero when they are disconnected. When it is connected, the one was showing 5v become zero and the zero become 5v (reversed). Is this normal or not? Cant think of any other reasons.

mike3000fl · 07-19-2013, 10:34 PM

The car is dead dead? As in the hazard lights don't even work? 12v is good to start. Sounds like IBS or the battery cable problem that they issued a recall for (not sure if your year is part of that).

I would clean the terminals and reattach the cables just for the heck of it too

fazman · 07-19-2013, 11:00 PM

I remember reading that when a new car is being transported they have a special cable hooked up around the battery terminal area. Once the car arrives at the dealership and goes thru PDI, they remove that cable and leave it off to the side. I think that can by pass the IBS??? Also you can try disconnection the IBS???

If your battery was failing and u jump started the car... I hope u used the jump points under the hood and NEVER from the physical battery in the trunk (you could blow out the junction box and that would be a cool $1000 to fix/recode).

tofupwr · 07-29-2013, 03:40 PM

Thank you for the info guys, towed it back to the bmw dealer and found out it was the recall on battery cable. The cable was melted and they changed a new fuse box for me, thanks!

07-19-2013, 06:39 PM	#1
tofupwr Registered 0 Rep 3 Posts Drives: bmw Join Date: Jul 2013 Location: Toronto iTrader: (0)	HELP..car not starting at all, ibs error? Hope someone can help. The 335xi is not starting at all and no light is on. It wasnt the first time. But previously the car started after awhile. This time it is not starting even after a day. My research is it might be the battery or the ibs. Checked voltage on battery, it is 12.7v. I think that is normal. Checked the ibs against ground, one is showing 5v and the other one is showing zero when they are disconnected. When it is connected, the one was showing 5v become zero and the zero become 5v (reversed). Is this normal or not? Cant think of any other reasons.
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07-19-2013, 10:34 PM	#2
mike3000fl Banned 138 Rep 2,731 Posts Drives: 06 330i Join Date: Feb 2010 Location: Tampa iTrader: (0)	The car is dead dead? As in the hazard lights don't even work? 12v is good to start. Sounds like IBS or the battery cable problem that they issued a recall for (not sure if your year is part of that). I would clean the terminals and reattach the cables just for the heck of it too
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07-19-2013, 11:00 PM	#3
fazman Brigadier General 681 Rep 3,696 Posts Drives: 335 e90 Join Date: Feb 2011 Location: Los Angeles iTrader: (0)	I remember reading that when a new car is being transported they have a special cable hooked up around the battery terminal area. Once the car arrives at the dealership and goes thru PDI, they remove that cable and leave it off to the side. I think that can by pass the IBS??? Also you can try disconnection the IBS??? If your battery was failing and u jump started the car... I hope u used the jump points under the hood and NEVER from the physical battery in the trunk (you could blow out the junction box and that would be a cool $1000 to fix/recode).
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07-29-2013, 03:40 PM	#4
tofupwr Registered 0 Rep 3 Posts Drives: bmw Join Date: Jul 2013 Location: Toronto iTrader: (0)	Thank you for the info guys, towed it back to the bmw dealer and found out it was the recall on battery cable. The cable was melted and they changed a new fuse box for me, thanks!
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