Vacuum Line w/ Pressure Sensor

chadwick · 07-31-2013, 04:47 PM

I just had my 2nd failure of part #34302283605 on my 2010 M3 - the brake vacuum line w/ sensor. I didn't see very much commentary on this part in the forums, so maybe I'm just unlucky

Is this a part that people are seeing a lot of issues with? It looks relatively easy to replace yourself - has anyone done it themselves?

I live 80 miles from the nearest service center so when it does happen it's a big ordeal.

SenorFunkyPants · 07-31-2013, 04:52 PM

How did you know the part had failed?

chadwick · 07-31-2013, 04:55 PM

Quote:

Originally Posted by SenorFunkyPants

How did you know the part had failed?

Well, both times it was service center diagnostics. But the car goes into limp mode when it happens.

jphughan · 07-31-2013, 07:25 PM

The sensor can be damaged by brake fluid, which can happen either when it's ejected from the reservoir during hard driving (if it was overfilled) or if some was spilled during a service. Unfortunately, this brake fluid-sensitive sensor is located directly under the brake fluid reservoir....

Happened to me too once. Now I just ask them to be extra careful about spillage and fill level during brake fluid service.

07-31-2013, 04:47 PM	#1
chadwick Private 16 Rep 70 Posts Drives: 2023 BMW 540i Join Date: Mar 2013 Location: Katy, Texas iTrader: (1)	Vacuum Line w/ Pressure Sensor I just had my 2nd failure of part #34302283605 on my 2010 M3 - the brake vacuum line w/ sensor. I didn't see very much commentary on this part in the forums, so maybe I'm just unlucky Is this a part that people are seeing a lot of issues with? It looks relatively easy to replace yourself - has anyone done it themselves? I live 80 miles from the nearest service center so when it does happen it's a big ordeal.
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07-31-2013, 04:52 PM	#2
SenorFunkyPants Brigadier General 2511 Rep 4,381 Posts Drives: 2019 M5 Join Date: Mar 2009 Location: UK iTrader: (0)	How did you know the part had failed?
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07-31-2013, 07:25 PM	#4
jphughan Brigadier General 594 Rep 4,488 Posts Drives: '16 Cayman GT4 Join Date: Mar 2011 Location: Austin, TX iTrader: (0)	The sensor can be damaged by brake fluid, which can happen either when it's ejected from the reservoir during hard driving (if it was overfilled) or if some was spilled during a service. Unfortunately, this brake fluid-sensitive sensor is located directly under the brake fluid reservoir.... Happened to me too once. Now I just ask them to be extra careful about spillage and fill level during brake fluid service. __________________ '16 Cayman GT4 (delivery pics, comparison to E92 M3 write-up) Gone but not forgotten: '11.75 M3 E92 Le Mans \| Black Nov w/ Alum \| 6MT (owned 5/2011 - 11/2015)
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