Yellow E-brake light

Jmantx · 06-23-2022, 10:24 PM

I've had a yellow e brake light for as long as I've had the car. The only code is 5e34 Longitudinal acceleration sensor. I replaced mine with a used sensor, but the light remains, even though I've cleared the codes. Could both sensors be toast, or is there something else causing it? I previously had an sas error, which I fixed by getting an alignment. It did not fix the 5e34 code.
Edit: 2007 335i coupe 6at FBO with CTS Turbos.

bimmermech123 · 06-23-2022, 10:31 PM

Check brake fluid level and brake pad wear sensors, both can set off a yellow e-brake light

Hoody007 · 06-26-2022, 09:25 PM

Quote:

Originally Posted by Jmantx

I've had a yellow e brake light for as long as I've had the car. The only code is 5e34 Longitudinal acceleration sensor. I replaced mine with a used sensor, but the light remains, even though I've cleared the codes. Could both sensors be toast, or is there something else causing it? I previously had an sas error, which I fixed by getting an alignment. It did not fix the 5e34 code.
Edit: 2007 335i coupe 6at FBO with CTS Turbos.

Have you tested the wiring for the sensor itself?

Jmantx · 08-08-2022, 09:22 PM

Quote:

Originally Posted by Hoody007

Have you tested the wiring for the sensor itself?

I didn't see this until just now. I still have the light, but no real way to test the wiring. Is there some sort of programming required to make the module communicate properly?

6cylinder · 09-02-2022, 10:10 AM

Hi, I also had the 5E34 error after I replaced my old pre facelift DSC with a DSC from a 2011 facelift. After you have installed a new DSC sensor cluster you need to adaped/learn the new sensor with ISTA. There is a extra job in ISTA for.

If adapting does not help something seems to be wrong with the DSC. You could measure the four wires between DSC and sensor. If the problem cannot be solved there could be a defect in the DSC. Broken solder joints are unfortunately often problems with the DSC.

Just yesterday I described my DSC exchange procedure. In my post you will also find the cable pinout of the DSC sensor cluster:
https://www.e90post.com/forums/showt...7#post29287237

06-23-2022, 10:24 PM	#1
Jmantx New Member 0 Rep 14 Posts Drives: No BMW yet! Join Date: Jan 2022 Location: Texas iTrader: (0)	Yellow E-brake light I've had a yellow e brake light for as long as I've had the car. The only code is 5e34 Longitudinal acceleration sensor. I replaced mine with a used sensor, but the light remains, even though I've cleared the codes. Could both sensors be toast, or is there something else causing it? I previously had an sas error, which I fixed by getting an alignment. It did not fix the 5e34 code. Edit: 2007 335i coupe 6at FBO with CTS Turbos.
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06-23-2022, 10:31 PM	#2
bimmermech123 Private First Class 55 Rep 109 Posts Drives: 2008 BMW 328i Join Date: Dec 2021 Location: Canada iTrader: (1)	Check brake fluid level and brake pad wear sensors, both can set off a yellow e-brake light
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09-02-2022, 10:10 AM	#5
6cylinder Enlisted Member 2 Rep 37 Posts Drives: E92 Join Date: Apr 2011 Location: Germany iTrader: (0) Garage List 2015 F10 550i xDrive [0.00] 2007 E92 325i [0.00] 2005 E90 320i [0.00]	Hi, I also had the 5E34 error after I replaced my old pre facelift DSC with a DSC from a 2011 facelift. After you have installed a new DSC sensor cluster you need to adaped/learn the new sensor with ISTA. There is a extra job in ISTA for. If adapting does not help something seems to be wrong with the DSC. You could measure the four wires between DSC and sensor. If the problem cannot be solved there could be a defect in the DSC. Broken solder joints are unfortunately often problems with the DSC. Just yesterday I described my DSC exchange procedure. In my post you will also find the cable pinout of the DSC sensor cluster: https://www.e90post.com/forums/showt...7#post29287237
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