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      07-11-2019, 06:42 PM   #98
tranquility
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Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Montréal

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Quote:
Originally Posted by RobbiZ4 View Post
These are only rumors. There was never mounted a "better" mechanism in the car. Quality is the same on all cars from 2009 up to 2016!

The only difference is a 4th hydraulic valve on the hydraulic pump as of 2012. It forces the hydraulic pressure to open/close the roof while driving, as this was offered since spring 2012. The "newer" harness got a new part number as 2 additional wires were added from the CTM to this 4th valve.



No.


Pse apologize, but my expectation from 2 dozens of examined and repaired E89 roofs is, that all hydraulic hoses of this roof shell will break at the age of 10-12 years.
Well, it's better as it allows for operation while moving vs the older version which is virtually only at a standstill.
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