Went to start 06 325i and brake pedal is stiff and car would not read key

BLKBMW · 02-04-2010, 05:44 PM

Ive only driven my BMW about 400 miles since November so it sits for a week at a time sometimes in the winter. When I sat in it, the brake pedal was stiff and car did nothing with key in dash when pushing. After about 3 times it did it and fine when using the car on regular basis. What could that be? Its a CPO and Im still on 50K maint plan. Car has 30,400 miles. Been driving the 4Runner most of the time this winter. Any ideas? BTW here is a shameless pic I took tonight after putting a coat of Ultima on it.

xG35c · 02-04-2010, 06:26 PM

You didn't push the brake pedal far enough (because it was so stiff).
The stiff brake pedal after sitting for a while is due to a defective valve - get it replaced under your warranty!

goff · 02-04-2010, 06:45 PM

There is a vacuum check valve in the hose to the booster that leaks causing it hard to press the brake pedal. part # 34 33 7 577 336

SIB 34 06 07 has all the info!

BLKBMW · 02-04-2010, 07:06 PM

Thanks for the help guys. Forgive my cluelessness but is SIB 34 06 07 a Service Bullitin #?

bsamoul · 02-04-2010, 07:21 PM

Quote:

Originally Posted by BLKBMW

Thanks for the help guys. Forgive my cluelessness but is SIB 34 06 07 a Service Bullitin #?

Yes, SIB = Service Information Bulletin

raceyBMW · 02-05-2010, 11:02 AM

http://www.bmwtis.com/tsb/bulletins/...p/B340607g.htm

I have had this done once...and it still feels a bit stiff sometimes, but not like it was.

mike-y · 02-05-2010, 11:04 AM

interesting.. the stiff pedal has happened to me only a couple of times, but it seems only when I was parked/stopped on an incline, and I thought it was the comfort stop feature. it went away when I tapped the gas pedal a little bit.

MrDummy · 02-05-2010, 11:10 AM

This valve wont have any negative on the brakes or anything if it is not replaced right?

I noticed mine is always stiff b4 starting but I thought that was due to normal booster pressure since the car is not running yet?

02-04-2010, 05:44 PM	#1
BLKBMW Private 4 Rep 79 Posts Drives: 2010 328xi E92 Join Date: May 2009 Location: Stl iTrader: (0)	Went to start 06 325i and brake pedal is stiff and car would not read key Ive only driven my BMW about 400 miles since November so it sits for a week at a time sometimes in the winter. When I sat in it, the brake pedal was stiff and car did nothing with key in dash when pushing. After about 3 times it did it and fine when using the car on regular basis. What could that be? Its a CPO and Im still on 50K maint plan. Car has 30,400 miles. Been driving the 4Runner most of the time this winter. Any ideas? BTW here is a shameless pic I took tonight after putting a coat of Ultima on it. __________________ 2010 328i Coupe/X-Drive/Monaco Blue and Beige/Premium Pkg/Cold Weather Pkg 2000 4Runner 4wd winter ride 2006 BMW 325i sedan. Traded. Was a great car.
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02-04-2010, 06:26 PM	#2
xG35c Lieutenant 36 Rep 433 Posts Drives: 330i Join Date: Aug 2006 Location: NJ iTrader: (0)	You didn't push the brake pedal far enough (because it was so stiff). The stiff brake pedal after sitting for a while is due to a defective valve - get it replaced under your warranty!
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02-04-2010, 06:45 PM	#3
goff ///M Tech 6 Rep 89 Posts Drives: F30 Join Date: May 2008 Location: NY iTrader: (2)	There is a vacuum check valve in the hose to the booster that leaks causing it hard to press the brake pedal. part # 34 33 7 577 336 SIB 34 06 07 has all the info!
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02-04-2010, 07:06 PM	#4
BLKBMW Private 4 Rep 79 Posts Drives: 2010 328xi E92 Join Date: May 2009 Location: Stl iTrader: (0)	Thanks for the help guys. Forgive my cluelessness but is SIB 34 06 07 a Service Bullitin #? __________________ 2010 328i Coupe/X-Drive/Monaco Blue and Beige/Premium Pkg/Cold Weather Pkg 2000 4Runner 4wd winter ride 2006 BMW 325i sedan. Traded. Was a great car.
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02-05-2010, 11:02 AM	#6
raceyBMW king of the hills 92 Rep 2,915 Posts Drives: 2011 M3 w/ESS55, 2001 540i/6 Join Date: Dec 2006 Location: Arvada, CO iTrader: (1) Garage List 2001 BMW 540i/6 [8.17] 1994 530i [9.00] 2007 335i Coupe [8.37]	http://www.bmwtis.com/tsb/bulletins/...p/B340607g.htm I have had this done once...and it still feels a bit stiff sometimes, but not like it was.
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02-05-2010, 11:04 AM	#7
mike-y just another bmw douche bag 195 Rep 3,640 Posts Drives: 1.9L of fury Join Date: Nov 2008 Location: Los Angeles, CA iTrader: (4)	interesting.. the stiff pedal has happened to me only a couple of times, but it seems only when I was parked/stopped on an incline, and I thought it was the comfort stop feature. it went away when I tapped the gas pedal a little bit.
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02-05-2010, 11:10 AM	#8
MrDummy →сяuisiиg iи му вмш← 66 Rep 1,642 Posts Drives: 2010 Space Gray 328i Join Date: May 2009 Location: The Unemployment Capitol of America iTrader: (1) Garage List 2010 BMW 328i [0.00]	This valve wont have any negative on the brakes or anything if it is not replaced right? I noticed mine is always stiff b4 starting but I thought that was due to normal booster pressure since the car is not running yet? __________________ SuPerMoD @ MassMonsterz.com A "Happy" Owner of a Metallic Space Gray 2010 BMW 328i ProGaMeR on the XboX 360
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