Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X1 E84 (2011 - current)

X1 E84 (2011 - current)
The new to the US BMW X1 will arrive at BMW dealers in the fall of 2012 as a 2013 model year. Get your X1 28i with either sDrive (RWD) or xDrive (AWD) or get the US exclusive I6 N55 powered X1 35i dDrive.

Reply
 
Thread Tools Display Modes
  #1  
Old 07-01-2013, 09:18 PM
Supagoat Supagoat is offline
Officially Welcomed to the 'Fest
Location: Massachusetts
 
Join Date: Apr 2013
Posts: 114
Mein Auto: 14 X1 x28i MSport, Miata
What does the accelerator button do?

I'm at 1150 miles and almost done with break-in. I've started to push on the accelerator more but still keeping it under 4k. A couple times I've pushed it all the way down to the floor and engaged the button at the end of the pedal travel... It seems like it downshifts and is obviously full throttle.

The question is: I drive in manumatic mode exclusively so is there any difference between manually shifting down and pushing the accelerator until I hit the button and hitting the button? Do I get 100% throttle before I've hit the button or only after? In manumatic mode do I need to upshift if I do floor it and press the button or will it do that automatically since it auto-downshifted? I know when I release the button it doesn't auto upshift.

Thanks! (I think I kinda hate the button)
Reply With Quote
Advertisement
  #2  
Old 07-01-2013, 10:01 PM
floydarogers's Avatar
floydarogers floydarogers is offline
Pedant and Curmudgeon
Location: Renton, WA
 
Join Date: Oct 2010
Posts: 3,844
Mein Auto: 335d, 328d, Toyota T100
The button is actually more for the transmission than the engine. The car interprets you pushing it as: "I need maximum power and torque RIGHT NOW.", so the transmission downshifts to the best gear, rev matches the transmission to the correct engine speed, locks the torque converter, and commands full throttle (not necessarily in that order.)

Result: bat out of hell mode.

In old cars it was called the kick-down switch.

Last edited by floydarogers; 07-01-2013 at 10:02 PM.
Reply With Quote
  #3  
Old 07-02-2013, 01:40 PM
nbercasio nbercasio is offline
Officially Welcomed to the 'Fest
Location: North Carolina
 
Join Date: May 2013
Posts: 151
Mein Auto: BMW 535i and BMW X1
Quote:
Originally Posted by Supagoat View Post
I'm at 1150 miles and almost done with break-in. I've started to push on the accelerator more but still keeping it under 4k. A couple times I've pushed it all the way down to the floor and engaged the button at the end of the pedal travel... It seems like it downshifts and is obviously full throttle.

The question is: I drive in manumatic mode exclusively so is there any difference between manually shifting down and pushing the accelerator until I hit the button and hitting the button? Do I get 100% throttle before I've hit the button or only after? In manumatic mode do I need to upshift if I do floor it and press the button or will it do that automatically since it auto-downshifted? I know when I release the button it doesn't auto upshift.

Thanks! (I think I kinda hate the button)
Am I missing something? I don't see this "accelerator button" on my Xdrive Sport...
Reply With Quote
  #4  
Old 07-02-2013, 02:03 PM
Supagoat Supagoat is offline
Officially Welcomed to the 'Fest
Location: Massachusetts
 
Join Date: Apr 2013
Posts: 114
Mein Auto: 14 X1 x28i MSport, Miata
Quote:
Originally Posted by nbercasio View Post
Am I missing something? I don't see this "accelerator button" on my Xdrive Sport...
The button is at the bottom of the accelerator pedal travel. Push the gas pedal down lightly until you hit a stop. Then push a little harder and you'll push the button. Do it on a highway with nothing in front of you.
Reply With Quote
  #5  
Old 07-02-2013, 04:06 PM
whitby whitby is offline
Officially Welcomed to the 'Fest
Location: Austin, Texas
 
Join Date: Jun 2009
Posts: 239
Mein Auto: BMW
Quote:
Originally Posted by floydarogers View Post
In old cars it was called the kick-down switch.
It still is I believe. Push to the floor and the transmission will drop a gear or two. As you say it was assumed that you needed more power which usually equates to more revs to get the engine in its optimum torque band.
__________________
Cheers

2012 Space Grey 528i MSport
2013 Valencia Orange X1 xDrive28i
Reply With Quote
  #6  
Old 07-02-2013, 05:21 PM
Supagoat Supagoat is offline
Officially Welcomed to the 'Fest
Location: Massachusetts
 
Join Date: Apr 2013
Posts: 114
Mein Auto: 14 X1 x28i MSport, Miata
I celebrated hitting 1200 miles today by pressing the button. :-) I don't hate it at all. It works really well with manumatic because with the button pressed it shifts up by itself during acceleration. When I'm done I can manually upshift.

Now that I can really drive it I'm reassured that I made the right choice with the 28. The 35 would be faster, but the 28's still quick and I love the ZF8 transmission. I know any time I'm cruising that I can downshift 2 gears safely to get some power to accelerate. I love the character of the car. It just seems so calm under pressure and willing to do my bidding.

I'm still going to get the Dinan tune, of course. :-) More power is better if you can get it.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X1 E84 (2011 - current)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 03:52 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms