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-   -   09 750li Trany kicks from 20 to full stop. (http://www.bimmerfest.com/forums/showthread.php?t=616766)

syavik 04-24-2012 04:52 PM

09 750li Trany kicks from 20 to full stop.
 
Hello. 09 F02 not x drive transmission kicks when going from 20 to full stop. It happens once in a while on my vehicle. Do you have the same problem in your vehicle?
Thank you

dbs600 04-24-2012 05:35 PM

What does this mean; that when you put it into Park, it continues to roll a little before getting into gear (Park)?

syavik 04-24-2012 06:03 PM

When you are driving 20 mph and coming to the stop.

dbs600 04-24-2012 06:44 PM

Since new my transmission has had harsh downshifts from 3rd to 2nd and from 2nd to 1st gears, most noticeable when coasting, but after visiting the dealer numerous times, I've been told same is normal.

You seem to be experiencing something different. Sorry I cannot be of further help...

oneofew 04-24-2012 10:07 PM

Quote:

Originally Posted by syavik (Post 6792646)
Hello. 09 F02 not x drive transmission kicks when going from 20 to full stop. It happens once in a while on my vehicle. Do you have the same problem in your vehicle?
Thank you

what you are describing sounds exactly like my wife's 06 Range Rover Sc, once we made a full stop it would kick, dealer reprogramed the trans few times and but could not get rid of the problem, finally dealer brought in a factory rep, he had them replace the rear diff and problem was solved once n for all.
I have not experienced that on my 7 series, that's not the norm.

oneofew 04-24-2012 10:20 PM

Quote:

Originally Posted by dbs600 (Post 6792882)
Since new my transmission has had harsh downshifts from 3rd to 2nd and from 2nd to 1st gears, most noticeable when coasting, but after visiting the dealer numerous times, I've been told same is normal.

You seem to be experiencing something different. Sorry I cannot be of further help...

I guess what you call harsh is all relevant, as i'm costing if the the radio is off in a quiet surrounding, especially cold morning, cold drivetrain, yes I can feel the downshifts. However if it's sifting harsh after heat soak, something is wrong, very likely the valve body of your new transmission could be calibrated a little off. You should test drive a brand new one see how that feels.

syavik 04-25-2012 06:25 AM

Thank you
 
Thank you

chrischeung 04-25-2012 08:07 AM

Did you try resetting the transmission? Google the procedure.

syavik 04-25-2012 08:17 AM

Looked, can't seem to find. Does anyone know?

chrischeung 04-25-2012 09:38 AM

http://forums.5series.net/topic/4001...moother-shift/

It worked for me in the past when I had my 2008 535i. I think the 2009 750 has the same or similar 6 speed transmission. Nothing lost other than a minute of your time giving it a try.

AdamG13 04-25-2012 10:44 AM

I had that problem with my 07 750. It was under warranty, so they replaced some type of electronic module on the transmission and it fixed things. I want to call it the ECM but I can't recall.

canuckdon 04-25-2012 12:57 PM

check out the e65/66 board, it's full of tranny issues, and the f01/02 has the same zf 6 speed as the e65/66 (2013 gets the 8 speed). No one has fully answered the question of why it shifts harshly, and worse yet, there is no single fix, and possibly no fix. People who have had a new tranny installed, say the harshness comes back in a few months.

syavik 04-25-2012 04:58 PM

Ok, it's not that bad, so I'll deal with it I guess :(

DallasBimmer 04-25-2012 07:31 PM

Quote:

Originally Posted by syavik (Post 6795070)
Ok, it's not that bad, so I'll deal with it I guess :(

Correct. I've had the same problem since last August and did the reset twice. It's good for a few weeks then gets harsh again.
Dealer here says there's no ECM flash for this one. They can flash the system but it won't correct harshness... :dunno:

dbs600 04-25-2012 07:33 PM

Is everyone writing about the 'transmission kick' syavik writes about or the 'harsh downshifts' I've mentioned?

syavik 04-25-2012 07:47 PM

I guess, nobody else has this problem, not that there is a major kick.

chrischeung 04-25-2012 09:06 PM

Did you try the reset?

syavik 04-26-2012 04:57 AM

Yes, but trany didn't make any noise, possibly it's a different procedure. Can anyone else try resetting procedure?

kpumroy 04-28-2012 05:40 AM

Please stop perpetuating the internet myth of a "transmission reset procedure". There is no such thing! The ZF 6 speed transmission has been and continues to be problematic. Part of the problem is the quest for fuel economy over performance and refinement in engineering and design.

Individual750LI 05-10-2012 03:01 PM

I tried the reset on my car yesterday, didn't have any noise from the tranny after pressing the pedal for 1 min. The car drives no different than before, well, not that I have harsh downshift anyway.

chrischeung 05-10-2012 03:24 PM

Quote:

Originally Posted by kpumroy (Post 6800417)
Please stop perpetuating the internet myth of a "transmission reset procedure". There is no such thing!

My personal experience says otherwise. I can't say there isn't anything inherently wrong with the transmission, but the procedure did smooth out the shift issue I was having.


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