2008 550 w/ SAT experiencing slam
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From: New Orleans, LA USA
My Ride: E90 M3
Model Year: 2011
Did a search but nothing conclusive. My Oct '07 build 2008 550 has very recently developed some transmission issues. Kind of like the slam issue I had on my 545 which was corrected by a software update. Happens in DS and/or Sport mode when slowing down and the transmission down shifts, hard. Feels like being rear-ended. Don't recall anyone seeing the same issue. Anyone with similar issue and if so the fix?
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From: Pittsburgh, PA USA
My Ride: G30 M550i
Model Year: 2018
I think I've felt it a couple of times (not sure if it was strong enough to feel like I was rear ended though.)
99.9% of the time, I manually downshift (like I did with my SMG) so it really doesn't happen to me much. I'm due for a service in the next few weeks and I do plan on mentioning it to see if there's any software updates that may address it...
99.9% of the time, I manually downshift (like I did with my SMG) so it really doesn't happen to me much. I'm due for a service in the next few weeks and I do plan on mentioning it to see if there's any software updates that may address it...
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From: New Orleans, LA USA
My Ride: E90 M3
Model Year: 2011
Originally Posted by Rudy' post='925336' date='Jun 26 2009, 11:13 PM
I think I've felt it a couple of times (not sure if it was strong enough to feel like I was rear ended though.)
99.9% of the time, I manually downshift (like I did with my SMG) so it really doesn't happen to me much. I'm due for a service in the next few weeks and I do plan on mentioning it to see if there's any software updates that may address it...
99.9% of the time, I manually downshift (like I did with my SMG) so it really doesn't happen to me much. I'm due for a service in the next few weeks and I do plan on mentioning it to see if there's any software updates that may address it...
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From: Western Washington
My Ride: 2008 Space Gray 550i, Light Poplar Wood, Anthracite Head Liner, Sport Package, Sport Automatic Transmission, Cold Weather Package, Front Ventilated Comfort Seats in Black Nasca Leather, NAV, HUD, Active Steering, Comfort Access, Night Vision, Lane Deviation Warning, Active Cruise Control, Heated Rear Seats, Folding Rear Seats, Power Shade w/ Rear Side-Shades, Rear Air Bags, Logic 7, HD Radio, Sirius Satellite Radio, iPod/USB Adapter. Car in BMW Body Shop, estimated completion 01/24/07.
I have had it, just once... I posted the experience, pretty frightening at the time given the traffic situation and the car shutting down on me. A search will turn it up. I also found and reposted a discussion that included a supposed ZF engineer, who offered an analysis of the slam issue, and it made a lot of sense. Again, try a search, if you don't find it I'll try to find it again. Search on my name. By the way, I don't manually downshift unless I'm feeling spirited, and it takes peculiar circumstances for the Slam to occur (if the ZF engineer's explanation is correct).
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From: NM
My Ride: 2008 550i sport SAT
2012 535i Xdrive msport
2007 550i Sport w/SMG (gone)
2000 528i (gone)
1991 535i (gone)
Originally Posted by kscarrol' post='925311' date='Jun 26 2009, 11:42 PM
Did a search but nothing conclusive. My Oct '07 build 2008 550 has very recently developed some transmission issues. Kind of like the slam issue I had on my 545 which was corrected by a software update. Happens in DS and/or Sport mode when slowing down and the transmission down shifts, hard. Feels like being rear-ended. Don't recall anyone seeing the same issue. Anyone with similar issue and if so the fix?
There are many of us chasing this tranny slam problem, unfortunately for many of us the software upgrade does not solve the problem. My car have been reprogrammed at least three times with the newest software everytime and the problem is still there. Do a search here and you will find quite a bit of info. Good luck.
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From: New Orleans, LA USA
My Ride: E90 M3
Model Year: 2011
Originally Posted by Rudy' post='925336' date='Jun 26 2009, 11:13 PM
I think I've felt it a couple of times (not sure if it was strong enough to feel like I was rear ended though.)
99.9% of the time, I manually downshift (like I did with my SMG) so it really doesn't happen to me much. I'm due for a service in the next few weeks and I do plan on mentioning it to see if there's any software updates that may address it...
99.9% of the time, I manually downshift (like I did with my SMG) so it really doesn't happen to me much. I'm due for a service in the next few weeks and I do plan on mentioning it to see if there's any software updates that may address it...
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From: SoCal- SFV (Land of pimps, drug dealers, money, hot cars and hot wimmenz...this ain't no movie bitch, mess with us and we'll cut ya!)
Originally Posted by kscarrol' post='927806' date='Jun 29 2009, 04:33 PM
I was the dealer today picking up my wife's X5 and spoke to my SA about the transmission issue. He didn't know of any software updates but a service tech walked in as we were talking about it so we asked him. He indicated there was a software update to deal with harsh downshifts on my 550. Unfortunately I had to run and couldn't press for a SIB number or any real details. I'll see if I can get more details but my the issue is not worthy of a separate trip and my next service is three months away...
mine is back!!!
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