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Old 03-10-2013, 05:34 AM   #1
o///mroalansari
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Join Date: Feb 2013
Location: Australia
Posts: 31
My Ride: 330ci e46
Re post. Brake failure

Gday guys didn't get any help so was wondering if us OZ e46s could share some of your knowledge/options.
Check it out. Thanks!
http://forum.e46fanatics.com/showthread.php?t=975052
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Old 03-10-2013, 05:58 AM   #2
Brissyjohn
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Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
I've had that a few times. If yellow DSC light and the yellow brake warning light are on it means that the DSC, DTC or DBC are defective. I manage to fix mine by jiggling the wires at the DSC unit and the brake master cylinder switches.
I've had the codes read when it happens to me and they come up as:

5E 20: PRESSURE SENSOR 1; ACCIDENT RECOGNITION

5E 24: PRESSURE SENSORS NOT PLAUSIBLE; PRESSURE SENSOR 1/2 NOT PLAUSIBLE

Go figure.
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Old 03-10-2013, 07:39 AM   #3
o///mroalansari
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Could have been the bumps in the rode that "jiggled" the wires. Didn't do anything and next car ignition they were gone. Should I be concerned? Or preventative tips? I am now using shifting down to slow down to save wear on the brakes but also feel that places wear on the transmission :|

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Old 03-10-2013, 07:58 AM   #4
DesiredM
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Join Date: Sep 2012
Location: Australia
Posts: 519
My Ride: E46 M3
Quote:
Originally Posted by o///mroalansari View Post
Could have been the bumps in the rode that "jiggled" the wires. Didn't do anything and next car ignition they were gone. Should I be concerned? Or preventative tips? I am now using shifting down to slow down to save wear on the brakes but also feel that places wear on the transmission :|

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Don't be silly and downshift to slow down and put strain on your transmission. It costs a lot more to repair a tranny then it does brakes. Be sensible.

Last edited by DesiredM; 03-10-2013 at 07:59 AM.
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Old 03-10-2013, 03:41 PM   #5
Brissyjohn
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Join Date: Jun 2011
Location: Brisbane, Australia
Posts: 345
My Ride: 2003 325ti
Drive the car normally. I suspect one or both of the brake pressure sensors in the master cylinder might be sending (or not) some BS signal. I find it has been completely random and has happened to me about four times in two years of ownership.
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Old 03-11-2013, 12:21 AM   #6
o///mroalansari
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Join Date: Feb 2013
Location: Australia
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My Ride: 330ci e46
Maybe I'll stop down shifting then. And just assume the sensors are sensing inaccurately. Thanks for now guys!

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