Adaptive tranny experts
03-04-2009, 11:42 PM
#1
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Does anyone fully understand the function of the adaptive tranny and how it learns ?
ie, after a basic 25 sec gbox reset does that clear everything or still leave some memory in the ecu ? I understand it starts learning for every new journey ? so what aspect of the learning is accumalitive ?
hope that makes sense
ie, after a basic 25 sec gbox reset does that clear everything or still leave some memory in the ecu ? I understand it starts learning for every new journey ? so what aspect of the learning is accumalitive ?
hope that makes sense
03-05-2009, 08:47 AM
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My Ride: 2008 550i Jet Black on Black Leather, SAT with Paddles, Logic 7, Comfort Seats, NAV, Sport Package, PDC, Xenons, Sirius, Trinity 12W LED Angel Eyes, RPi GT Exhaust, M rear spoiler, ACS Roof Spoiler, Tinted Tail Lights, Bimmian Carbon Fiber Pillar Trim, Bimmian Shadow 550i emblem, RPi Scoop, E60 Forum Cling, Mtec bulbs in fog lights, Mtec 2W LED for License Plate Light Bulbs, K&N Filter, Bimmian LED Smoked Side Markers, Blackout roundels, Carbon Fiber Kidney Grills.
Retired Rides - 1989 325i convertible, 1995 M3, 2002 X5, 2005 545i, 2008 X5 (Lemon)
I'm not sure exactly what it resets and leaves intact, but I do it at least once a week and the resulting smoothness is ALL I care about! 
03-05-2009, 09:53 AM
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Originally Posted by flyingpuck' post='808271' date='Mar 5 2009, 09:47 AM
I'm not sure exactly what it resets and leaves intact, but I do it at least once a week and the resulting smoothness is ALL I care about!
I reset mine about two months ago after learing about this for the first time, and it made a world of difference. It is still smooth as silk and I don't feel the need to reset it agian yet.
So far so good.
03-05-2009, 10:08 AM
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My Ride: BMW E61 525DSE Auto Touring.
2004 54 plate
Metalic saffire Black,
Active Steering.
18 Inch Style 124 Alloys,
falken 452s
Beige Leather
Dark Poplar Wood Trim
xenon bulb upgrade
blutooth phone prep
i think the reset sets everything back to factory settings and it starts learning the way you drive all
over again i did mine after learning about it on this forum about two and a half months ago and
it made a big difference in the speed and smoothness of the gear changes even the wife noticed
(which says something) she thought it was a new car still smooth as silk now will probably do about
every four months
over again i did mine after learning about it on this forum about two and a half months ago and
it made a big difference in the speed and smoothness of the gear changes even the wife noticed
(which says something) she thought it was a new car still smooth as silk now will probably do about
every four months
03-05-2009, 10:53 AM
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My Ride: 2004 BMW 545i Sport Package, Titanium Gray II Metallic, Wheel Style 124
i wonder if i am doing the 25 second reset correctly... the times that i had my car at dealer i notice for first 2 days tranny is smooth and sensitive to the foot
03-05-2009, 02:52 PM
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My Ride: 2006 525XI, Jet black on Dakota beige. Premium and winter packages. I consider myself a purist and intend to keep my car absolutely stock and shiny.
2008 328I Convertible, Sapphire black on beige interior. Premium package, NAV, iPod adapter.
Retired: 2002 325I, Titanium silver on black leather. Premium package. Absolutely stock and proud of it.
Have people noticed if the transmissions shift a little harsher after someone else drives the car, i.e. a spouse or g/f?
03-05-2009, 11:38 PM
#7
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For me it does seem the memory is fully reset after 30 secs but find the 1st drive after a reset crucial to lay down a base map in the ecu. ie if the 1st journey is stop/ start/erratic the base map would be no good and would have to reset again. If the 1st drive is smooth/swift then the base map will be fine.
If this is how it does work then dont fully understand how the ecu copes with each journey thereafter ie. does it start a fresh journey map every time the car is started maybe ? but the base map maybe picks out elements of every journey.
Does seem strange that the map always deteriates to need resetting rather than getting better to not need resetting.
If this is how it does work then dont fully understand how the ecu copes with each journey thereafter ie. does it start a fresh journey map every time the car is started maybe ? but the base map maybe picks out elements of every journey.
Does seem strange that the map always deteriates to need resetting rather than getting better to not need resetting.
03-06-2009, 04:01 AM
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My Ride: 545i SE - silver grey, sports suspension, 124's, nav and other stuff!
Hi all, I haven't tried the reset before. I just need to keep the accelerator pedal to the floor for 25 sec to reset? Key on?
Thx
Jay
Thx
Jay
03-06-2009, 08:41 AM
#9
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My Ride: BMW E61 525DSE Auto Touring.
2004 54 plate
Metalic saffire Black,
Active Steering.
18 Inch Style 124 Alloys,
falken 452s
Beige Leather
Dark Poplar Wood Trim
xenon bulb upgrade
blutooth phone prep
turn key to position 2 ignition lights on push accelerator to the floor past klickdown switch and hold there for 30 seconds
thats what i did and worked great for me lovely smooth gearbox
thats what i did and worked great for me lovely smooth gearbox
03-06-2009, 12:51 PM
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My Ride: 2005 545i
Better keep your foot down for 60-90 seconds to be sure. There's no audible or visual feedback to indicate anything happens, and I'm not sure 30 seconds is long enough.