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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 12-26-2012, 12:41 PM
supramanX5 supramanX5 is offline
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Location: Indianapolis
 
Join Date: Dec 2012
Posts: 9
Mein Auto: X5 e70; 03' 325xi
x5 e70 brake problem...need help pls

I'm a new member & hello to all.
I need help please. I just replaced my '07 X5 front pads and warning sensor. I thought my work went well and everything should be ok (as I have done same thing +replace rotor on my e46). But after new pads have been installed...I noticed the pedal has a soft feel and very weak brake, and even worse, the pedal is slowly going all the way down the floor. I resorted to bleeding the front only (although I didn't think I needed to if just replacing pads), but did not fix the problem.

Any suggestions what I might have missed or done wrong? Fluid level stays the same, and I don't see any exterior leak. Although I don't know for sure, I'm not yet suspecting a master cylinder problem for now, as I had no other problems before replacing the front pads (the pedal was firm even with the old worn pads). I replaced the pads (using OEM parts) due only to the brake warning light coming on.

I really would appreciate much any help or input. Thanks so much in advance!
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  #2  
Old 12-26-2012, 01:24 PM
roy528 roy528 is offline
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Location: pa
 
Join Date: Dec 2012
Posts: 40
Mein Auto: 2013 528ix
It's got to be either air in the system or a slave or master cylinder failure.
HAve it bled with a pressure bleeder - full system and see what happens.
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