Philip Foglar
///Member
Would be interesting to do that and also to see how (and if) the sensitivity changes as it adapts - not sure how that could be tested though...
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Read the WELCOME ALL BMWFANATICS post.
THROTTLE MEMORY RESET
- Thread starter G335im
- Start date
Philip Foglar
///Member
Update and old thread revival:
Anyway with these drive by wire throttle bodies that our cars have, especially with manual gearboxes, this becomes a problem when adaptation and other computer nonsense is let into the loop. Now the idea is that the throttle map gets interpreted based on what the ECU has learnt from daily driving etc. So I gather throttle map, air/fuel mixture are adapted as time goes on.
Now I had tried this once before and it did seem to work, but I later put this down to the placebo effect where one wants to feel a difference. Since I got my car back from Auto Atlantic a month or so ago from its last motorplan covered visit for the pinking, the throttle has not felt all that great! Very lumpy and not too predictable making some jerky gear changes.
So for the E90, Key Fob in and ignition turned on. Foot flat on the throttle for 30 sec and then push the Start button. Leave everything as is for 2 minutes and then ignition off - all done. Of course clutch pedal is not touched during this process (brake pedal for the autos)...
Went for a drive and immediately I did notice that the throttle was somewhat lighter in terms of more willing to react, and more importantly the engine's power band seems to also be a fair bit smoother! Even taking my foot off the throttle is now smoother than it used to be.
Got me thinking, have not done this to the E46 - so asked my Wife permission to play! :rollsmile:
Key in the ignition turned to the on position for 10 sec, then off position (one back) for another 10 sec - done. At least that seems to be the procedure on E46Fanatics and a few other E46 forums...
Not as familiar with the E46, but low end did seem to be easier to control and throttle feel was also better - my Wife didn't seem to really notice too much of a difference, but maybe in the next few days she might.
The E90 definitely seems to be better after this, and so is the E46, so pretty chaffed! :thumbs:
Disclosure: :idea:
Anyway with these drive by wire throttle bodies that our cars have, especially with manual gearboxes, this becomes a problem when adaptation and other computer nonsense is let into the loop. Now the idea is that the throttle map gets interpreted based on what the ECU has learnt from daily driving etc. So I gather throttle map, air/fuel mixture are adapted as time goes on.
Now I had tried this once before and it did seem to work, but I later put this down to the placebo effect where one wants to feel a difference. Since I got my car back from Auto Atlantic a month or so ago from its last motorplan covered visit for the pinking, the throttle has not felt all that great! Very lumpy and not too predictable making some jerky gear changes.
So for the E90, Key Fob in and ignition turned on. Foot flat on the throttle for 30 sec and then push the Start button. Leave everything as is for 2 minutes and then ignition off - all done. Of course clutch pedal is not touched during this process (brake pedal for the autos)...
Went for a drive and immediately I did notice that the throttle was somewhat lighter in terms of more willing to react, and more importantly the engine's power band seems to also be a fair bit smoother! Even taking my foot off the throttle is now smoother than it used to be.
Got me thinking, have not done this to the E46 - so asked my Wife permission to play! :rollsmile:
Key in the ignition turned to the on position for 10 sec, then off position (one back) for another 10 sec - done. At least that seems to be the procedure on E46Fanatics and a few other E46 forums...
Not as familiar with the E46, but low end did seem to be easier to control and throttle feel was also better - my Wife didn't seem to really notice too much of a difference, but maybe in the next few days she might.
The E90 definitely seems to be better after this, and so is the E46, so pretty chaffed! :thumbs:
Disclosure: :idea:
Philip Foglar
///Member
Twinz said:
KarshS
///Member
Hi Guys,
I found this quiet interesting and haven't seen this on our forum yet. Sorry if i missed it or re-post.
this is basically to clear driving style memory. It should work on all auto cars that have Driver Adaptive Electronic modules
Steps:
push in your key
press start button without pressing the brake
all dash lights should come on
press in your accelerator peddle right down to the floor
hold it in for 5 seconds
with your foot off the break press the start button again, all dash lights should go off
do not remove the key
now let go of the accelerator peddle
do not remove the key for 2 minutes (nothing less
after 2 minutes it will have reset.
Start the car and take it for a drive :rollsmile:
i actually noticed a big difference on my 330d. It feels more sharper when changing.
Its good to do this if you use your car as a daily then decide to go on a track.
Do this at your own risk. Im just sharing information i came across.
I found this quiet interesting and haven't seen this on our forum yet. Sorry if i missed it or re-post.
this is basically to clear driving style memory. It should work on all auto cars that have Driver Adaptive Electronic modules
Steps:
push in your key
press start button without pressing the brake
all dash lights should come on
press in your accelerator peddle right down to the floor
hold it in for 5 seconds
with your foot off the break press the start button again, all dash lights should go off
do not remove the key
now let go of the accelerator peddle
do not remove the key for 2 minutes (nothing less
after 2 minutes it will have reset.
Start the car and take it for a drive :rollsmile:
i actually noticed a big difference on my 330d. It feels more sharper when changing.
Its good to do this if you use your car as a daily then decide to go on a track.
Do this at your own risk. Im just sharing information i came across.
Sabretooth tiger
///Member
nice thread
graan13
Active member
Just a question for the older cars e46 and e39. I can adapt the steps for the "key" replacing the start button as such but on these older cars you don't need to put your foot on the brake pedal to start it, so I am just curious as to turning the key to start position - would that be to the position just prior to actually cranking the motor? did the article mention that?
graan13
Active member
ChefDJ said:
As per my question, with regards the key and the ignition on, how does it work with the procedure between holding the loud pedal down for 5sec and then pressing the "start" button again to cancel the lights with a key? cause the key would still be in the ignition on position with the previous steps? would you need to turn it off and back on again? Forgive my stupidity :fishwack:
OppositeLockMT
Active member
I'm guessing this doesn't work if you have a cable throttle. :fencelook:
ters
New member
I have done the reset shortly after I got my car, it works!
Google is your friend for other models: https://www.google.co.za/#q=bmw+throttle+adaptation+reset
I am sure there is a procedure for cable throttles? TPS on Throttle body inputs to comp?
Ters.
Google is your friend for other models: https://www.google.co.za/#q=bmw+throttle+adaptation+reset
I am sure there is a procedure for cable throttles? TPS on Throttle body inputs to comp?
Ters.
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