XSeries-forum

1. Put key in the ignition
2. Click on the Start button without having your foot on the accelerator. At this point the lights on the dash will all light up.
3. Push the accelerator to the floor and hold it for about 30 seconds. For me at about 20 seconds I heard a very faint sound. This is the reset sound. Don't worry if you don't hear it. Just keep your foot on the pedal for about 30 seconds.

That's it. Now start the car and test it out. For me the acceleration from a stand still was much improved. I now don't feel like I need to drive in DS mode all the time.

Good to know if a reset becomes necessary - thanks for posting.

I presume you mean without putting your foot on the brake in stage 2?  Otherwise you'll be revving the nuts off it for 30 secs in stage 3 !

This may help you
automatic transmission reset procedure: Turn on the car such that all the accessory lights are on but the motor is not running, depress the gas pedal all the way to the floor, keep the pedal there for 30 seconds and the transmission will reset to the original factory settings (it will "unlearn" the adaptive settings).straight from a BMW Technician

The method described above is mid stage ignition - lights on air con on but no engine.  It will not start up if you press accelerator and start button (at least mine didn't!)

@denny's, snipez999, thanks for clearing that up! Hope I'll never need to use a reset but useful to know how it can be done.

[quote="MJim"]
@denny's, snipez999, thanks for clearing that up! Hope I'll never need to use a reset but useful to know how it can be done.
[/quote]

It's worth doing sometimes anyway.

Must admit I never knew that the car 'learnt' and adjusted itself accordingly. So how did dennys car learn that he liked to faff around endlessly at junctions?  >:D

Last time he lends the car to his Nan

[quote="snipez999"]
Last time he lends the car to his Nan
[/quote]

Or PVR

[quote="535dboy"]
[quote="snipez999"]
Last time he lends the car to his Nan
[/quote]

Or PVR
[/quote]

I always understood the reset procedure to be that you had to press the accelerator to the kick down position.

Sounds as though push button method might be for e70 whereas the key method is for E53

This is not a gearbox reset.

This is a throttle adaption reset.

The gearbox reset is done with DIS, ISTA, Autologic etc. It is plugged in and the transmission adoptions are reset where the TCU forgets everything it has learnt about the transmission and starts from scratch.

The thread title should be renamed, "throttle position reset."

Interesting.  At least we now know.  I guess the name has been picked up and carried over from the other BMW sites and has kinda stuck.  My original X5 dealer (no longer exists) even called it that.....but then he was a salesperson!

So what does it actually do?  Is it a gimmick or actually worth doing?

Richard

It resets the throttle positions memory.

This is why people think the engine has come to life and feels alot more nippy!

The throttle is self learning on older cars, it notices driving styles etc etc. Overtime if a previous owner has been lethargic over their driving, the throttle and gearbox get used to it and start getting into the highest gear ASAP.

When you reset the throttle, it forgets all of this and starts from scratch. It doesn't know what the driver wants so it sticks to "normal" driving or what is presumed to be more "sensitive."

I never think it's worth doing, if you plan on driving aggressively you keep the gearbox in sport mode. The other option is to drive normally which D will do perfectly fine. Why you would want D to be reset all of a sudden I don't know why.