Abs malfunction

cn555ic · 03-26-2011, 01:41 PM

Lately my car occasionally when I got WOT the abs malfunction warning pops up on my navi screen more often than usual. I have no idea whats triggering it. It pops up for a couple of second then disappears. The ecu when this happens does not allow the car to run my usual boost of 15-16 psi on meth. Can this be the cause from having a battery that's was dead but I recharged it back? Have no clue as to why it happens occasionally. Anyone have an answer or it happen to their car? It only happens when I go WOT

Bimmer335i07 · 03-26-2011, 01:52 PM

Quote:

Originally Posted by cn555ic

Lately my car occasionally when I got WOT the abs malfunction warning pops up on my navi screen. I have no idea whats triggering it. It pops up for a couple of second then disappears. The ecu when this happens does not allow the car to run my usual boost of 15-16 psi on meth. Can this be the cause from having a battery that's was dead but I recharged it back? Have no clue as to why it happens occasionally. Anyone have an answer or it happen to their car? It only happens when I go WOT

Could it be that one of the brake sensors are loose?

cn555ic · 03-26-2011, 02:02 PM

From my search it seems like it's a bad abs sensor or something with the charging system/battery. How do you check which sensor is the one that's bad or going bad?? Anyone. I swear this car has so many electrical gremlins! Sure miss my 67 camaro that I had. So simple!! Lol

cn555ic · 03-26-2011, 02:54 PM

Okay guys I did a search and ABS malfunctions occasionally shows it's ugly head when there is a problem with the battery if its not the sensors themselves that are bad...Well I went out and took a look at the battery connections first before I look into the ABS sensors, and what do you know!! When I hooked up my nitrous bottle heater to the battery I either didn't tighten the nut to the positive terminal tight enough or somehow the nut got loose! I was able to turn the nut with my fingers which meant it wasn't on there all that good and there wasn't a great connection to the positive side of the battery..Well a quick tightening of the bolt and a test drive seems to have solved my issues...If it comes back again then it has to be one of the abs sensors, but IMO I think after researching this problem it has to do with battery issues like some have stated, and in my case I would think its the positive terminal not being bolted down tight enough!!

03-26-2011, 01:41 PM	#1
cn555ic 442 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Abs malfunction Lately my car occasionally when I got WOT the abs malfunction warning pops up on my navi screen more often than usual. I have no idea whats triggering it. It pops up for a couple of second then disappears. The ecu when this happens does not allow the car to run my usual boost of 15-16 psi on meth. Can this be the cause from having a battery that's was dead but I recharged it back? Have no clue as to why it happens occasionally. Anyone have an answer or it happen to their car? It only happens when I go WOT Last edited by cn555ic; 03-26-2011 at 03:35 PM..
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03-26-2011, 02:02 PM	#3
cn555ic 442 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	From my search it seems like it's a bad abs sensor or something with the charging system/battery. How do you check which sensor is the one that's bad or going bad?? Anyone. I swear this car has so many electrical gremlins! Sure miss my 67 camaro that I had. So simple!! Lol Last edited by cn555ic; 03-26-2011 at 03:32 PM..
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03-26-2011, 02:54 PM	#4
cn555ic 442 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Okay guys I did a search and ABS malfunctions occasionally shows it's ugly head when there is a problem with the battery if its not the sensors themselves that are bad...Well I went out and took a look at the battery connections first before I look into the ABS sensors, and what do you know!! When I hooked up my nitrous bottle heater to the battery I either didn't tighten the nut to the positive terminal tight enough or somehow the nut got loose! I was able to turn the nut with my fingers which meant it wasn't on there all that good and there wasn't a great connection to the positive side of the battery..Well a quick tightening of the bolt and a test drive seems to have solved my issues...If it comes back again then it has to be one of the abs sensors, but IMO I think after researching this problem it has to do with battery issues like some have stated, and in my case I would think its the positive terminal not being bolted down tight enough!! Last edited by cn555ic; 03-26-2011 at 03:34 PM..
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