Trying to Find a short
#22
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Did you check to see if your car is consistently going to sleep? I connected an ammeter in series with the battery to test mine.
#23
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Thread Starter
When ever I checked it, it goes to sleep. When this happens, it is Fast. I will be driving, then stop go get coffee or something, and then it won't start. I carry a Jumper Battery with me now.
If the IBS is bad, it would throw a code? I have a feeling bunch of modules were hit with something. Based on how the Tail Hitch module was burnt up. I know I have multiple module faults, . The big issue I have right now is that I need to pass my Emission test in March and ieverytime I unlock the car, I can hear my CD changer going through its boot sequence. Almost like my entire communication resets which could also reset the DME and mess with my drive cycle.
If the IBS is bad, it would throw a code? I have a feeling bunch of modules were hit with something. Based on how the Tail Hitch module was burnt up. I know I have multiple module faults, . The big issue I have right now is that I need to pass my Emission test in March and ieverytime I unlock the car, I can hear my CD changer going through its boot sequence. Almost like my entire communication resets which could also reset the DME and mess with my drive cycle.
#24
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Join Date: Jul 2011
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
Ok so you posted a screenshot of the ISTA tree but didn't post the code list. Hook up ISTA and clear the codes. Then run the test again and post which codes that came right back without driving the car or opening or closing the doors. You should be in the car with the door closed. Also post the pic of the tree
Also you have no communication with a few modules especially some that you should have communication with. Check your connection settings to see if it is wrong. Your DWA should be reading.
We have to start from the beginning. The A0B2 error in the CAS looks like where you need to focus. Check in the battery area for bent, corroded or loose cables
Also you have no communication with a few modules especially some that you should have communication with. Check your connection settings to see if it is wrong. Your DWA should be reading.
We have to start from the beginning. The A0B2 error in the CAS looks like where you need to focus. Check in the battery area for bent, corroded or loose cables
Last edited by seanjordan20; 02-07-2021 at 05:46 PM.
#25
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seanjordan20, These constant Snow storms is a problem right now. I will erase the code. I have to work during the week with crazy hours. Just one question, when I do this, Is the Engine running or do I need to be in Accessory Mode and Engine not running. External 12V Stabilizer hooked up?
I appreciate your assistance.
I appreciate your assistance.
#27
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@seanjordan20 Can ISTA read the charge discharge histogram? That's where I'd be looking. There's an assumption that the battery is doing just fine before this all happens but how would you know if you've not measured the battery voltage? Yeah the low discharge notification isn't showing at the time but the battery voltage could be right on the cusp though.
#28
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
Originally Posted by donpb
@seanjordan20 Can ISTA read the charge discharge histogram? That's where I'd be looking. There's an assumption that the battery is doing just fine before this all happens but how would you know if you've not measured the battery voltage? Yeah the low discharge notification isn't showing at the time but the battery voltage could be right on the cusp though.
#29
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
Originally Posted by 2006 530xi
seanjordan20, These constant Snow storms is a problem right now. I will erase the code. I have to work during the week with crazy hours. Just one question, when I do this, Is the Engine running or do I need to be in Accessory Mode and Engine not running. External 12V Stabilizer hooked up?
I appreciate your assistance.
I appreciate your assistance.
What type battery do you have in you car? Was it programmed when installed? Have you checked the power cable leading from the battery to the alternator for corrosion? Make sure you upload the error list from ISTA I need to see what every module and it's codes
Last edited by seanjordan20; 02-07-2021 at 07:17 PM.