[jhbodle]

Hey all,

Does anyone know the correct proceedure for reseting the adaptive throttle on the E90? On the E46 it was:

Turn ignition on for 10secs
turn ignition off
start engine

Has this changed for the E90?

[Broken1]

oooo does this apply to manuals?

[carl_d]

Originally Posted by jhbodle

Hey all,

Does anyone know the correct proceedure for reseting the adaptive throttle on the E90? On the E46 it was:

Turn ignition on for 10secs
turn ignition off
start engine

Has this changed for the E90?

Why? What does this do?

[AW330i]

ok i am out of the loop on this one, what is adaptive throttle

[Socom]

I do not know. E90Fleet should know.
I earned major kudos when a friend of mine was complaining how his z4 seems sluggish. I reset the throttle and he was instantly transformed back into another happy BMW driver.

[E90Fleet]

Never seen anything in the tech docs

And according to DINAN its all in your mind in the E46

[carl_d]

Originally Posted by E90Fleet

Never seen anything in the tech docs

And according to DINAN its all in your mind in the E46

That would makes sense since I've read several alleged ways of resetting it. What ever "it" is?

[jhbodle]

Originally Posted by carl_d

Why? What does this do?

Apparently the throttle in all drive-by-wire BMWs is adaptive, meaning that the car adjusts to your way of driving. For example, if you treat the throttle like glass then it will make the accelerator pedal less responsive in a bid to make the car more economical. Whichj is all well and good until you get out onto a clear stretch of road and floor the accelerator and find the car to be sluggish.

Resetting the throttle is supposed to put it back into the sportiest mode and many people say they can feel the difference if they reset it every month or so if they have to commute in heavy stop/start traffic a lot. Although E90Fleet has made me dubious of the benefits now...

[carl_d]

Originally Posted by jhbodle

Apparently the throttle in all drive-by-wire BMWs is adaptive, meaning that the car adjusts to your way of driving. For example, if you treat the throttle like glass then it will make the accelerator pedal less responsive in a bid to make the car more economical. Whichj is all well and good until you get out onto a clear stretch of road and floor the accelerator and find the car to be sluggish.

Resetting the throttle is supposed to put it back into the sportiest mode and many people say they can feel the difference if they reset it every month or so if they have to commute in heavy stop/start traffic a lot. Although E90Fleet has made me dubious of the benefits now...

I agree the E46 engines are moody and often unresponsive. I alway put it down to not useing 98 RON fuel. I'll give it a try.

[David325Australia]

i had an e46 323i for 6 1/2 years and i found the engine to exhibit characteristics that you noted above.

it was not a mindset, it was real. some drives it really felt sluggish others it felt flighty.

nothing like the e90 response though. anyway we are off topic here and my e90 is fantastic!

[E90Fleet]

Originally Posted by David325Australia

i had an e46 323i for 6 1/2 years and i found the engine to exhibit characteristics that you noted above.

it was not a mindset, it was real. some drives it really felt sluggish others it felt flighty.

nothing like the e90 response though. anyway we are off topic here and my e90 is fantastic!

Was it a Auto ?

Remember the auto box does have a adaptive feature


But anyway lots of factors can cause different behavier from your engine, like the outside temperature, at a specific temp the engine will start retarding the timing and you loose tons of power, let it cool down a bit and all the power is back

[David325Australia]

Originally Posted by E90Fleet

Was it a Auto ?

Remember the auto box does have a adaptive feature


But anyway lots of factors can cause different behavier from your engine, like the outside temperature, at a specific temp the engine will start retarding the timing and you loose tons of power, let it cool down a bit and all the power is back

hey e90 fleet,
it was a manual tranny.

the weather never really played a big part in the engine's behaviour, although i am aware of such variables. it was random and it never really bothered me that much as i knew the car's capabilities which, for the most part were quite ordinary and could easily be beated (to the next set of red lights) by many other cars. i never really tried it either.

i just enjoyed the engine note though. made up for its shortcomings.

as many have mentioned here and no doubt your good self included, bmw is not only about performance alone. the car was 100% reliable and as you no doubt will agree with me, that's the most important point for any car.

[carl_d]

Originally Posted by David325Australia

hey e90 fleet,
it was a manual tranny.

the weather never really played a big part in the engine's behaviour, although i am aware of such variables. it was random and it never really bothered me that much as i knew the car's capabilities which, for the most part were quite ordinary and could easily be beated (to the next set of red lights) by many other cars. i never really tried it either.

i just enjoyed the engine note though. made up for its shortcomings.

as many have mentioned here and no doubt your good self included, bmw is not only about performance alone. the car was 100% reliable and as you no doubt will agree with me, that's the most important point for any car.

My current E46 330 does this. One day it lacks performance the next it is racing along. I think it is linked to variation in fuel quality/gade? I hope the E90 is more consistent?

[Streaker]

I realise this is a very old thread, and maybe my thoughts are not relevant, however this was a very widely discussed and used topic on the K12 website.

The bikes also had an adoptive throttle feature that was reset by disconnecting battery for half an hour, reconnecting, switching ignition on and operating throttle from zero to full twice and then switching ignition off.

Now some clever guy decieded to cheat the system slightly you only open the throttle halway, thereby telling the ecu that full throttle is reached at half throttle. Now the ecu been adaptive would eventually correct for this, but this would take a while to happen, but in the mean time throttle response was improved incrediably. Personal thought says that the ecu thinks full throttle is reached and therefore it dumps the extra fuel in, thereby bypassing those lean burn times at part throttle.

I did try this on the K and found it worked as claimed. Now the K was fitted with a very fancy system, but I am sure that a system of at least the same sifistication is fitted to the E90 as they were launched at roughly the same time.

Will speak to the guys at the dealership in the week and find out if there is a throttle reset similar to the k on the E90.

[E90330iS]

cool

[3lusive]

There was a thread not too far down the page talking about this...

http://www.e90post.com/forums/showthread.php?t=63796

[chesterfan1230]

On the e90's you have to i believe put the key in, without putting the foot on the brake, press on. THEN hold the gas pedal down, with the engine off. You should hear noise from your gear box(I know sounds ridiculous) but it works, and it resets the ecu of any previous "learns' per say.

[Fritzables]

Isn't this the same has disconnecting the battery overnight???

Fritzables.

[Fritzables]

I tried the pedal to the metal whilst ignition was on but engine off for about 60 seconds.

I didn't hear a noise as mine is manual but tell ya what - it makes a huge difference and it's definitely not my imagination.

Fritzables.

[Streaker]

Just an update on my previous statement. When I was at BMW (for a remote key failure) I asked them to reset the throttle. The D.I.S machine does it without any imputs from the actual throttle pedal, thereby making the half throttle idea on my car, as per the bike, not relevant.

However, on the bikes, the throttles were also reset with the D.I.S and not the battery diconnect and I can personally swear that on the K12 it really worked. Would be intresting to know if it works on the car as well.

[jpsum]

If it is "adaptive", then it would adjust to the way you drive. Why do you have to figure out a way to "reset" it??? It's a waste of time.


Case closed.

[broker88]

From a dead stop there is a hesitation when you give it some gas before it gets going. Not just my car but every other one I driven.
Maybe I'll give this a try today see what happens.


Update:

Put the key in and put the gas pedal to the floor for about 30 secs w/o turning on the car. Made a big difference. The hesitation is gone now and throttle response is instant.