[satz]

hi all

am trying to minimise that bad and unpredictable throttle delay that I have in some situations on my M40i.

I've had this more or less on all previous turbo auto BMWs I've owned.

The steps I've always found are roughly:
put car in 'ignition' position without foot on any pedal.
press accelerator to the floor
hold for 30 seconds
turn car 'off' again
release accelerator

Anyway, given that there's no 'ignition' position using the X3 start button how do you achieve this? If I press the start button without foot on brake pedal it goes to some mode which brings up the message about pressing the brake pedal to start, but then this mode changes itself within 30 seconds.

And cycling through the start button doesn't turn the car off. Should I be using the radio button to shutdown?

Or doesn't this reset procedure work at all on the X3?

I've experimented for 12 months using Sport mode, Sport Plus, Individual, etc and yet this dreaded delay creeps in at some point after driving for a while, esp if AC is on...

Disabling traction control (or is it DSC) does help, but as soon as I put on cruise control it reactivates anyway.

cheers

[charlescm14]

Thanks for your post, im also interested in anyone else's feedback. I have tried doing the above steps on my m40i, seemed to work .. but maybe it's in my head lolz

[satz]

These are the steps I'm using on my M40i:

press 'start' button without foot on any pedal.
press accelerator to the floor (past the kickdown point)
hold accelerator down for 30 seconds
hold the 'radio' button for a few seconds to turn car 'off'
release accelerator
wait at least 2 minutes before starting engine.

Let me know how it goes.

[clivem2]

And then exit the vehicle, spin around once clockwise and thrice anti-clockwise.

I’m sorry, I couldn’t resist. ��

[satz]

Originally Posted by clivem2

And then exit the vehicle, spin around once clockwise and thrice anti-clockwise.

I’m sorry, I couldn’t resist. ��

only twice, not thrice.

[Coi]

I discovered that a lot of the perceived throttle delay is actually traction control kicking in without even flashing the light. Doing a quick single press of the DSC button, putting it into "TRACTION" mode, when paired with Sport mode makes the throttle a lot more responsive. Especially noticeable when coming out of corners.

I think Traction does disable some of the driver assistance features and does allow the rear end to slide a bit, so use at your own caution.

[satz]

Originally Posted by Coi

I discovered that a lot of the perceived throttle delay is actually traction control kicking in without even flashing the light. Doing a quick single press of the DSC button, putting it into "TRACTION" mode, when paired with Sport mode makes the throttle a lot more responsive. Especially noticeable when coming out of corners.

I think Traction does disable some of the driver assistance features and does allow the rear end to slide a bit, so use at your own caution.

Agree! I just wish I remembered to deactivate more often. Trouble is I use ACC quite often, and it automatically reactivates traction control everytime...

Guess it can't be coded off being a fundamental safety item.

Having said that, I think the throttle 'reset' has helped reduce the transmission lag. My testing continues... Every drive is a test drive for me

[freshxdough]

There is no such thing as a "throttle reset" function. I still don't know who created this myth

The only thing you're going to do by doing that is start the electric water pump service function and then immediately turn the car back off…

[Drexel_Lake]

Originally Posted by freshxdough

There is no such thing as a "throttle reset" function. I still don't know who created this myth

The only thing you're going to do by doing that is start the electric water pump service function and then immediately turn the car back off…

[Drexel_Lake]

Buy a throttle control/bypass like Pedal Box or Pedal Commander. There are much cheaper models now. I use one in my E46 and it works extremely well getting rid of the drive- by-wire lag. Planning on one for my M40i when it arrives next week.

[Acc-Risk]

Originally Posted by freshxdough

There is no such thing as a "throttle reset" function. I still don't know who created this myth

The only thing you're going to do by doing that is start the electric water pump service function and then immediately turn the car back off…

It's not a throttle reset, but a transmission reset. But I can see why people consider it throttle related as that is how it would appear.

[freshxdough]

Originally Posted by Acc-Risk

It's not a throttle reset, but a transmission reset. But I can see why people consider it throttle related as that is how it would appear.

Either way, it's not a thing. Lol. To reset trans adaptations you need to perform a vehicle test and then a service function to reset them.

[Acc-Risk]

Originally Posted by freshxdough

Either way, it's not a thing. Lol. To reset trans adaptations you need to perform a vehicle test and then a service function to reset them.

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

[clivem2]

Originally Posted by Acc-Risk

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

Maybe the training freshxdough receives from BMW means it’s not opinion he’s giving here...

[383vett]

Originally Posted by Acc-Risk

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

Oops

[HighlandPete]

Originally Posted by Acc-Risk

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

Are we to believe BMW Master Technicians know nothing...

[Ashsarhaz93]

Originally Posted by Acc-Risk

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

Time for a tumbleweed moment methinks…

[Alias1431]

[Razel]

Originally Posted by Ashsarhaz93

Time for a tumbleweed moment methinks…

[hinckley]

Originally Posted by Acc-Risk

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

[freshxdough]

Originally Posted by Acc-Risk

You most certainly do not. You're more than entitled to your opinion but you are completely incorrect. This has been a procedure in automatic BMWs for decades. Please stop discussing things you know absolutely nothing about. Thanks.

I'm going to go out on a limb here and say you don't use ISTA or have any concrete evidence of these "resets" you are talking about. If so i would really like to see the document stating this reset procedure.

If you like I can provide you a photo of a transmission reset adaptations service function in ISTA to help you understand that I don't say something is wrong if I don't believe that it is in fact wrong. Ive also done research on the matter regarding these "resets" including asking several technicians and shop foreman some of who have been working on BMWs since the E30 was new.

[thecritikal1]

My 97 VW Passat had a procedure something similar to reset the transmission ECU memory.

I'm 50/50 on this one but fresh hasn't steered me wrong yet.