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      08-20-2012, 12:10 PM   #6
n55x3
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Drives: n55 BMWs
Join Date: Dec 2011
Location: us - ohio

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Quote:
Originally Posted by Teemo Panda View Post
From the both of you, it is normal, the pumping sound you hear when you open the door when locked is from the rear suspension going up I think.
This is normal for the entire xLine models.
Ours does not have rear load leveling suspension. Is that even an option on X3s? I am however very familiar with the load leveling suspension sound. Have had it on previous cars/trucks over the years.

I do agree it is normal and nothing to worry about (at least the noise I hear when opening doors or unlocking via remote). The HPFP noise has been well documented over the past 5 years. I've heard it on BMWs with both the N54 and N55 motor dating back to 2007/8 for the N54 cars.

Last edited by n55x3; 08-20-2012 at 12:15 PM..
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