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Discussion Starter #1
Just happened driving home. Thankfully, the brakes still worked fine. When I got home I ran the OBDFusion. Nothing came up in errors. Any thoughts? Thanks very much.

Todd

(PS, THE SEARCH FUNCTION ON THIS FORUM IS ABSOLUTELY TERRIBLE. IT LITERALLY WOULD NOT LET ME SEARCH "ABS" BECAUSE IT SAID IT WAS TOO SHORT OF A WORD OR PHRASE. SERIOUSLY?!)
 

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When mine showed those 2 codes, the steering wheel angle sensor needed to be recoded. Cheap fix from a BMWs specific shop.

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you need to setup and learn how to use inpa

i ran pa soft first, will you give you a little idea

i had to watch the speed sensors while moving car in inpa

turned out left front was bad

i first recal the steering angle sensor to be sure


it can only be a few things


bad or out of cal steering angle sensor

bad wheel speed sensor


bad pressure switch in master cylinder , there are two


bad abs module , can be rebuilt
 

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Discussion Starter #5
They're all off now. Hmmmmm. The eternal mysteries...
 

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Discussion Starter #7
they'll be back
...aaaaand, they're back. OK. N o idea what to do here. I do not have an old Windows laptop. I'm not sure what INPA is. Short of going to the dealership, is there another reader option to help me narrow down what's going on?

1. Is it safe to drive with the lights on? I made it 24 miles back from the YouPick with no issue, but is this sustainable long term? Does it only mean the ABS won't function?

2. Do I really need AB S on this car? I suspect a painfully expensive repair/replace session.

Thanks
 

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will run on latest windows with right drivers

there are threads here for you to learn ,i did it, you can too

prob ok to drive


learn how to use and work the programs

will only be costly if you don't


think a wheel sensor cost me $30
 

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Discussion Starter #10

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Discussion Starter #11
will run on latest windows with right drivers

there are threads here for you to learn ,i did it, you can too

prob ok to drive


learn how to use and work the programs

will only be costly if you don't


think a wheel sensor cost me $30


No windows machines. But I’ll get another code reader if there’s a reasonable one you recommend. Thank you.


Sent from my iPhone using E46Fanatics mobile app
 

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Scotty Kilmer was raving about a standalone reader on his YouTube channel this week. Not sure how compatible it was with BMW, but claims it's all brands. About $100 iirc.

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Discussion Starter #13

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Where this normally ends up is an error with
Brake Pressure Sensor.
Before you consider changing it try 2 things:
1. Reseat big connector next to brake reservoir
2. Tap the brake pressure sensors - sometimes an air bubble(s) trapped.

When you get INPA working you can actually see the values for pressure in the front and rear brake circuits, to aid faultfinding - as there are 2 sensors to pin point which one.
 

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Discussion Starter #16

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Mine did the same thing, lights on randomly and then would go out on their own only to come back on a day or week later.
Scanned with INPA and came back as L-R wheel speed sensor, replaced with ATE brand and no more problems.
 

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I had bad sensor too. But you need a proper code reader on there to pinpoint the problem.
It seems to me that fluid didn't have to go down far to trigger lights.
 

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Where this normally ends up is an error with
Brake Pressure Sensor.
Before you consider changing it try 2 things:
1. Reseat big connector next to brake reservoir
2. Tap the brake pressure sensors - sometimes an air bubble(s) trapped.

When you get INPA working you can actually see the values for pressure in the front and rear brake circuits, to aid faultfinding - as there are 2 sensors to pin point which one.
rarely does the pressure switch go before wheel sensor from my research
 
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