Intermittent rattling noise on start BMW X6 35i - Bimmerfest - BMW Forums

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X6 E71 / E72 (2008 - 2014)
The BMW X6 luxury crossover went on sale in April 2008 as a 2009 model year. BMW referes to the X6 as a Sports Activity Coupe (SAC) as it combines the attributes of an SUV (high ground clearance, xDrive and all-weather ability) with the stance, styling and roof line shape of a coupe. The E71 X6 was built off the E70 X5 (2007 - 2013) platform at BMW's Spartanburg, SC plant. Total worldwide sales were just over 235,000, sold mostly to the BRIC countries. US total sales was 34,082 vehicles.

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Old 10-27-2013, 09:13 AM
Savior Savior is offline
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Location: New York
Join Date: Oct 2013
Posts: 28
Mein Auto: 2011 BMW x6 35i
Exclamation Intermittent rattling noise on start BMW X6 35i

Hi Guys!,

I am new to the forum and also new to the BMW family. I recently purchased a pre owned 2011 BMW x6. Let me just say, I love this machine! I recently noticed upon start up, there is a rattling noise coming from underneath the passenger side wheel well on start up. It only last for less than 1 minute then goes away. Has anyone else experienced this? I'm concerned and will be taking it to the dealership. Just wanted to get an idea of what it might be before hand. Thanks!!
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Old 10-28-2013, 05:10 AM
dingular dingular is offline
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Location: Boston
Join Date: Feb 2013
Posts: 173
Mein Auto: 2013 x6 50i
I never noticed such a noise -- just wanted to say welcome
2013 X6 xDrive 50i
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Old 11-17-2013, 05:32 AM
G750i G750i is offline
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Location: Westchester, NY
Join Date: Dec 2012
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Mein Auto: 750li
Intermittent rattling noise on start BMW X6 35i

From the wheel well or under the hood? U shud have someone else first start the car and urself check out the exact location of the rattle? There is typically nothing much in the wheel well other than suspension parts and some wiring!

Also, welcome!

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Old 11-18-2013, 05:55 AM
HPIA4v2 HPIA4v2 is offline
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Location: washington
Join Date: Mar 2006
Posts: 2,782
Mein Auto: E60, E71, E92
Hope it's not the waste-gate.
on more benign situation, I just got my 335i belt-tensioner replaced; symptoms at cold start up it scretching in periodic interval.

I'd rev the engine up and see on the rev down if it rattles even more, this indicate waste-gate slop. Not sure if BMW-USA will replace the turbos though cause everything suppose to work fine.
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