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Old 10-20-2009, 05:23 PM
cholongar cholongar is offline
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Location: Columbia, MD
Join Date: Oct 2009
Posts: 1
Mein Auto: 2005 X5
Originally Posted by zibawala View Post
I have same car! problem, jerky transmission, booming too, continuing issue, previously fixed temporarily by firmware /software upgrade!

This time they changed MEZATRONIC UNIT, part of transmission, now working fine! Pm, me if u need more info
Hi Zibawala, My x5 has the same problem kick in the butt from first gear to second gear.
started from 30.000 miles. It's been in the shop many times. first, they said it's the power of the 4.4 engine, after that they could not duplicate the problem. they said it has the latest software upgrade.
now few months passed warranty and today just hit 50.000 miles. problem is, it's getting worse. Would you please explain more about Mezatronic unit? at what mileage did you get yours replaced and did they do it under warranty?
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