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BMW Throttle Body Adaptation Reset for AT

(2017-10-05 15:50:41) 下一个

Resetting the Adaptive Driver Memory for the transmission.

Works with any car that has Driver Adaptive Electronic Controlled Transmission. 

1. Get in your car, it doesn't matter if you close the door or not.
2. Turn the key to the on (not start) position, the position just before the starter turns over. BMW: press start button – foot off brake - all idiot lights on.
3. Press the gas pedal to the floor with the key in the "on" position. BMW: All idiot lights on.
4. Hold the pedal to the floor for five seconds, then turn the key back to the "off position". BMW: foot off brake press start button - all idiot lights now off (don't remove the key), then release the gas pedal.
5. Wait a full 2 minutes for a full electronic alignment. Don't remove the key.
6. Start engine, drive the car, notice the difference.

这个所谓的变速箱给油踏板30秒重置的偏方在网上广为流传,大致的反馈是多数说有效也有说无效的,但很快【几小时还是几天几星期不详】就会恢复重置前的各种所谓变速箱不好使症状,我是愿意相信TB重置[throttle map】多过变速箱重置,一个主要事实是这种所谓的重置在INPA里看到的变速箱的相关参数并未有任何改变,只有使用INPA之类的软件才能真正重置变速箱参数,而后者需要两个阶段的驾驶学习调整磨合参数,很难具备条件能按照要求的步骤去做变速箱路试驾驶学习,下面的解释感觉比较能自圆其说。

The only way to reset the transmission is with diagnostic equipment. There is no driveway simple reset procedure for our generation of BMWs. 

These silly internet (rumor) reset procedures  are just owners that are ill-informed about ATC (adaptive transmission control)...and are unaware that they are only engaging the adaptive sport mode by duplicating the driving style of an aggressive driver...and thus have duped ATC into thinking there's an aggressive driver behind the wheel. ATC selects the adaptive sport mode...and this change in the way the transmission is shifting...makes them believe the transmission has been "reset"...when all it has done is select one of the 3 shifting patterns it would normally select based on the driver's natural driving style (extreme economy (aka granny-toe), economy, or sport mode). The transmission selects one of these 3 by the way the driver is "mashing" the accelerator pedal. 

This rumored & false reset procedure, has the driver turning the ignition on (which sets up the modules to read driver input), then mash the accelerator pedal to the floor and hold it there for a few seconds (this suggests that the driver is aggressive)...due to the two previous actions...ATC will select the adaptive sport mode...again, thinking that there's an aggressive driver behind the wheel. If the continuing driving style is not maintained...and the driver is actually a normal or extremely timid driver...then after a few minutes...the shift pattern will change to how the driver is actually driving the car...and can go back into extreme economy or economy mode. 

Driver influenced adaptive tranny data isn't stored but renews with each restart. AGS tranny stuff...like how the tranny reacts to wear over time is stored...BUT requires softwear/hardware for a proper reset:
 


Below is how the driver influenced features of ATC works. The driver influenced adaptation occur each time the vehicle is started and are NOT stored...and the shift pattern is selected by how the driver uses the accelerator pedal and kick-down feature:
 





 
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