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 > 5 Series > F10 / F11 (2011 - Current)

F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

Reply
 
Thread Tools Display Modes
  #1  
Old 08-12-2011, 03:03 PM
Sonnie Sonnie is offline
Registered User
Location: Lower Bama
 
Join Date: Feb 2011
Posts: 82
Mein Auto: Shopping
The Official “Tip-In” / “Acceleration/Throttle Delay” Resolution Thread

The Official "Tip-In" / "Acceleration Delay" / "Throttle Lag" / "Initial Take-Off" Issue for the 2011 528i – Solutions and Complaint Filing Instructions


Introduction

You are at a busy intersection trying to squeeze your way out into the heavy traffic. You see an opening and mash the gas pedal, but the car does not seem to respond immediately….......... it hesitates….......... or it slowly pokes. You want to open the door, stick your foot down on the pavement (remember the Flintstones) and get the car moving….......... the person in the car behind you is screaming at you, GO! GO! GO! FOOL! …..........WHAT ARE YOU WAITING ON? You frantically keep mashing the gas pedal and all of the sudden, wham….......... you are jerked into oblivion and take off….......... heading straight for the hospital for one of two reasons, you either have whiplash or someone has plowed into the side of you because you were poking for too long.

OK, OK….......... so maybe that is a tiny bit of an exaggeration, but I also bet it ain't too far from several real stories, if not nearly spot on.

The "tip-in", "acceleration delay", "initial take-off" issue is serious and a safety issue. Read the threads and user reviews complaining about it and note how many owners are concerned about the unknown. If you attempt to feather the acceleration, will the car take off fast enough and/or jolt you….......... is it going to go or not? The unknown can be dangerous.

This issue is not new with the 2011 models. It has been around for several years in several BMW models, but apparently has become most noticeable in models with the N52 engines (and maybe some others). However, from my investigations, it appears in the 2011 528i models, it has become more pronounced….......... more aggressive….......... and therefore more noticeable and more of an annoyance….......... as well as more of a safety issue.

Quite frankly, I do not see how BMW ignores this as they do. With the extreme number of complaints about it….......... and the fact that many have turned away from buying BMW vehicles for this one reason, AND as smart as their engineers are with nearly every other aspect of their vehicles, I am in near complete unbelief that they have not figured out a solution to this issue. Very few people are ever going to understand or accept that this is normal acceleration behavior for a vehicle, regardless of who makes it.

This thread and the instructions that follow for filing a complaint are specific to the 528i and not the 535i. However, it appears that the software update SIB 12 9 11, which is mentioned in various places, will fix the issue in the 535i models….......... and is specific ONLY to the 535i and not the 528i. It has been reported that this software update does not fix the 528i, although there seems to be some unconfirmed reports that a few 528i owners have had this update and it did fix the issue. If this has been confirmed, please post in this thread and let us know. Even if it has worked for some 528i owners, there are several Service Advisors that will not apply this update because it is not assigned to the 528i.

From page 2 of the SIB:

Situation
E7x (X5, X6) with N55 up to 12/2010, F07/F10 (5 Series) with N55 to 2/2011
Delayed throttle response when driving off


The Blogs, Discussions and Reviews are Numerous

There are several articles/threads/blogs referencing this issue….......... many of the major reviews mention it, as well as numerous user reviews. Obviously they all cannot be included, but here are a few links if you want to take the time to read over some of them:

"Tip-In" and "Initial Acceleration" problems fixed

PROBLEM SOLVED!!... If your F10 has hesitation or jerks at 0-10 mph

Is there a 'Tip-in' fix for the 528i?

2011 BMW 528i: It's Not Just Me!

2011 BMW 528i: Delivering the Power

Tip-in, jerk, hesitation, operating as designed?


What BMW Owners Are Saying

Highlighted comments from various places about this issue (some editing for spelling and grammar):

I was experiencing the same as many others where if you are at a complete stop and you go to accelerate the car doesn't respond right away and you naturally apply more gas and then the car jumps ahead of you. If you were to move to the D/S position, the car was perfect and you didn't experience any lag in acceleration... it was almost like the car was set to start off in 2nd gear vs 1st.

Don't know how to explain it....seems pedal has to be pressed more than it should before getting an immediate throttle response. Like a small dead spot, I suppose. Only in normal mode. No lag in sport mode. Response is immediate.

It has scared me a few times when pulling out from a stop sign into traffic, thinking you have plenty of time and ease onto the accelerator only to find yourself moving like a snail, then having to stomp on it to get moving as traffic nears.

It's not the engine's response I am worried about. It's the ability to drive smoothly. I cannot, and neither can my wife, get this car to pull away from either a dead stop or a slight rolling stop smoothly and with consistent speed, more than 20% of the time.

You have three options normally for takeoff in this car: you have to feather the throttle and creep away like a cat burglar; tromp on it and leave like Don Garlits; or use normal throttle input, have nothing happen for 2 seconds, and then feel like a garbage truck just rear ended you.

I have a 2009 528i w/ Sport Package. My 5th BMW. They gave me a loaner 2011 528i for my last service and I still can't get over how differently they drove. The 2011 felt bigger but not just that the throttle tip in was much more agressive and combined with the loose electric steering it was very disappointing.

If this car was being used for a limo service, the driver would have no repeat customers. If your kids take their driver's exam in this car, they'll fail. It really is that bad.

I noticed this with an F10 528 loaner. That throttle lag is not fun, especially if you need to get out of a situation.

It's not a delay which decreases a transient surge. It INCREASES the transient surge as the car does not respond to the throttle for a half second then bolts forward with an awkward lurch and a slam. It's much rougher than a normal takeoff would be. It's not at all smooth. Some have described it as being rear-ended.

For the sake of clear discussion, let's not call it lag. Let's call it a "lack of a linear response to the throttle pedal".

I can't figure for the life of me why BMW would design it this way intentionally. It just makes the car hard to drive smoothly from a standing start. It's stupid. It's not the end of the world but it is stupid.

I have demonstrated to my tech that I get a 2 second lag when stepping on it as I coast down to 20mph. He readily agreed that it was an issue. My approach is that it is a safety issue (which it seriously is) and I have been presenting it this way.

Edmunds Inside Line has noted the same issue with their long term 528 as well. Its not the turbo, its the throttle and transmission programming. Its not related to actual engine power at all.

I was dumbfounded as I wanted to accelerate smoothly (half way floored gas pedal) from about 35mph to notice that bothersome delay and the sudden surge as the car shifted down one or two gears.

My wife has been driving my car a lot lately to keep the miles down. She would agree with this, the lack of a linear response makes her nervous. She commented the other day that she has to wait for a much bigger opening.

I have a Honda that is also "drive by wire", and the throttle response of that car is instant and consistent throughout its entire pedal travel, not at all like the laziness of the BMW.

I was at the dealership yesterday and asked my SA about it. She stated that they have seen the issue with the 528i and seemed to admit there is a problem with that model.

I simply blamed too many gears in the transmission! Was I wrong? I don't know... because the salesman then told me to try the manual sport mode and the hesitation promptly went away!

Whether or not this is considered technically a safety delay, I do agree that there is one on the F10, and was one on my prior E39...but not as pronounced. That being said, I would hope you all realize that there is at least one aftermarket BMW supplier out there that makes an electronic harness specifically made to delete this delay. I have not looked yet, but would imagine they are working on an F10 solution as well, if not already having it.

I was yielding at an intersection to make a left turn, and in ANY of the cars I've previously owned (BMWs, Audis, Jeeps) I would have stepped on it and cleared the intersection with ease. With the F10, I waited for oncoming cars to pass to be on the safe side. Not cool.

Toyota was forced to do a massive recall because of unintended acceleration that probably was caused by floor mats or something inane like that, not the vehicle electronics. Here, we have a similar problem affecting acceleration, apparently caused by a shortcoming in the drive by wire throttle software, and there's no acknowledgement that a problem exists. What would be required to get the exposure needed for a recall? Is this problem potentially dangerous or is it just annoying?

My issue is what happens when someone uses the car that either has never driven it before or drives it infrequently and is used to instant acceleration when stepping on the throttle?

In my judgement, If I look in my mirror and decide that it would be in my best interest to make more space between whatever I see and myself - and command my 300HP vehicle to get a move on by stepping deeply into my peddle - and it doesn't respond for 2 seconds (50 feet of unwanted closure at only 35mph vehicle-to-vehicle speed difference), I'd call that dangerous. Wouldn't you? I think BMW would agree. Now let's hope they can fix it.

I guess it will take a few accidents, deaths and a lot of bad publicity to get something done on this.

This needs to be recalled. It's a big safety issue.


There Are Some Solutions

While it seems only to be a temporary fix, you can reset the "Throttle Body Adaption", which resets the "Adaptive Driver Memory" feature by following these steps:

1) Press the Start button once to turn on power. Do not press the brake pedal and do not start the engine.
2) Press the accelerator down to the floor for up to 60 seconds. You should hear clicking to indicate it is resetting.
3) Press the Start button again to turn the power off.
4) Now remove your foot from the accelerator.
5) Wait TWO minutes and start up the vehicle like normal.

Many have stated this solved their acceleration delay, but in most cases it has to be reset weekly or monthly. In some cases owners have stated it did not have any effect.


A more permanent solution is to purchase an aftermarket product that will eliminate the delay. Sprint Booster has confirmed that they will have a module that will remap the throttle response hopefully within the next month or so. It cost a few hundred dollars, but may be worth it to some. I have read that it will void your warranty, as well as it will not void your warranty. I have not asked BMW, so you are own your own in figuring that out, but it is widely used and very effective according to those who have used it on previous models.


A Final and Permanent Solution – What Can We Do?

For those who want a BMW supplied permanent solution, the only way to get BMW to move on this is for there to be enough formal complaints so that BMW will take serious notice and/or it becomes a serious safety issue to BMW.

First, contact your Service Advisor at your local BMW dealer. If there are other BMW dealers within an hour or two, contact an SA at those dealers as well. See if you can get a regional SA involved.

Second, file a formal complaint with BMW North America by telephone….........

Contact BMW NA by calling their Customer Relations at 1-800-831-1117.

Third, file a formal complaint with BMW NA by writing to them:

BMW of North America, LLC
300 Chestnut Ridge Road
Woodcliff Lake, NJ 07677-7731


Fourth, file a formal complaint with NHTSA (National Highway Traffic Safety Administration)….......

https://www-odi.nhtsa.dot.gov/ivoq/

NHTSA will document the complaints…....... and by law they are required to report the complaints to BMW. Similar to the Better Business Bureau, if enough complaints are filed, they will investigate and may very well eventually force BMW to offer a resolution.

Be as specific as possible in all your explanations and documentation. You can give examples of how you feel it is dangerous and a safety issue. You can also state that BMW has recognized it as an issue in the 535i models, calling it an "Acceleration Delay" and have issued an SIB software update to repair it, but have not done so for the 528i.

Fifth, as user wildvan mentions elsewhere... contact your local State Attorney General Office and file a complaint. (Example) They will forward the complaint to BMW and require a response.

The idea is to get as MANY complaints issued to BMW NA as possible, in hopes that they will realize their customers are not happy and fully believe this is a serious safety issue.


If you have any further information to help those who want a permanent solution fix for their 2011 528i, please share the information here. Thanks!

Thanks to user UNCtarheels for providing an abundance of helpful information for all of us.



Last edited by Sonnie; 08-17-2011 at 05:44 PM. Reason: Corrections
Reply With Quote
Advertisement
  #2  
Old 08-12-2011, 07:38 PM
romeofrosty romeofrosty is offline
Officially Welcomed to the 'Fest
Location: Cape May, NJ
 
Join Date: Apr 2011
Posts: 130
Mein Auto: 2011 BMW 528i
Very informative post.
I am all over this like a cheap suit. Already made complaints to the NTSB, BMW NA (via phone and in writing). Dealer said he will set up an appointment for me when the regional rep comes around again in my area. We'll see what shakes out then.
__________________
2011 BMW 528i- Black Saphire Metallic, Black Leather, Prem. Package, Prem. Package 2, Convenience Package, Cold Weather Package, Sport Package,Sport Auto Trans, Anthracite Wood & Headliner, Xenon Lights, Split Fold-down Seats.
Reply With Quote
  #3  
Old 08-12-2011, 07:40 PM
romeofrosty romeofrosty is offline
Officially Welcomed to the 'Fest
Location: Cape May, NJ
 
Join Date: Apr 2011
Posts: 130
Mein Auto: 2011 BMW 528i
Thanks for keeping us updated. Everyone experiencing this problem should get on board with this. We need to get something going because the car sure isn't gonna fix itself.
__________________
2011 BMW 528i- Black Saphire Metallic, Black Leather, Prem. Package, Prem. Package 2, Convenience Package, Cold Weather Package, Sport Package,Sport Auto Trans, Anthracite Wood & Headliner, Xenon Lights, Split Fold-down Seats.

Last edited by romeofrosty; 08-12-2011 at 07:43 PM.
Reply With Quote
  #4  
Old 08-12-2011, 08:52 PM
UNCtarheels UNCtarheels is offline
Officially Welcomed to the 'Fest
Location: NC
 
Join Date: May 2011
Posts: 137
Mein Auto: 2011 535i ** 2002 325ci
great post and consolidation of all the issues...we need everyone to follow the steps outlined to get our voices heard
__________________


2011 535i*Jet Black*Oyster/Black Interior*P1*P2*Convenience Package*Split Fold Rear Seats*Anthracite Wood*

2002 325ci*Silver Metallic*Grey Interior*5 speed* Burlwood*Premium*Ski pass through

2006 X3 *retired*

1979 Chevy Corvette*White*Red Interior* 30,000 original miles
Reply With Quote
  #5  
Old 08-12-2011, 10:03 PM
SLO_AERO SLO_AERO is offline
Registered User
Location: Los Angeles, CA
 
Join Date: Jul 2011
Posts: 85
Mein Auto: 2011 528i
Thanks very much for taking the time to put this together for all of us!

...I plan to get to work on this as soon as my wife and her college roommates return with my car that they abducted for their girls' weekend : (
__________________
2011 528i - Sophisto Grau/Oyster/Antracite Wood, Premium 1, Nav, et al
Near Los Angeles, CA

Reply With Quote
  #6  
Old 08-13-2011, 12:36 PM
Needsdecaf's Avatar
Needsdecaf Needsdecaf is offline
Everything's Bigger in TX
Location: The Woodlands, TX
 
Join Date: Sep 2006
Posts: 7,106
Mein Auto: 2007 MDX
This issue continues to plague my car. My wife has also commented that it's pretty bad. It seems to be worse when the car is first started.
__________________
2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
Reply With Quote
  #7  
Old 08-13-2011, 06:36 PM
MisterScott MisterScott is offline
Officially Welcomed to the 'Fest
Location: DFW
 
Join Date: May 2011
Posts: 102
Mein Auto: 2010 550GT
Great thread. I have called BMW NA and had the latest reflash. Better but not fixed. Still have issues. BMW of Dallas is useless.
__________________
2010 550GT, 2013 X5 w/ M-Sport, 2012 F-350 Superduty King Ranch Crew Cab SRW 8' Bed, 2010 Kawasaki Concours 14, 2013 Chaparral 264 Sunesta Extreme VP 380 6.0.
Reply With Quote
  #8  
Old 08-14-2011, 12:15 AM
FastMarkA FastMarkA is offline
Officially Welcomed to the 'Fest
Location: Chicago
 
Join Date: Apr 2008
Posts: 1,569
Mein Auto: 2011 535xi
I know I'm not a 528, but this continues in my 535, and it's absolutely unacceptable. My Dad will be driving it next week, and I will have to tell him that if he plans on passing anybody on the freeway, he'll need to manually switch to Sport mode so he doesn't get rear-ended and/or die.

This is an absolute f-----g joke on BMW's part.
__________________

2008 535xi 6-sp - Blk Sph, Blk Dkta,---2011 535xi - Jet Blk, Blk Dkta, Alum----2014 535xi - Jet Blk, Blk Dkta, Alum Hex
Bamboo | Prem | Cold | Sprt Pkg | Nav -Prem | Prem 2 | Cold | Sport | SAT ---- Cold | DA & DA+ | LED | M-Sprt | SAT | Multi
iPod/USB | Sat | Fld Dwn Seats --- ----Fld Dwn Seats | Side/Top Cameras -- ---HK Audio
Htd Rear Seats | PDC | 18" | Logic7 -- ---
(Good riddance!)
Reply With Quote
  #9  
Old 08-14-2011, 05:22 AM
Needsdecaf's Avatar
Needsdecaf Needsdecaf is offline
Everything's Bigger in TX
Location: The Woodlands, TX
 
Join Date: Sep 2006
Posts: 7,106
Mein Auto: 2007 MDX
Quote:
Originally Posted by FastMarkA View Post
I know I'm not a 528, but this continues in my 535, and it's absolutely unacceptable. My Dad will be driving it next week, and I will have to tell him that if he plans on passing anybody on the freeway, he'll need to manually switch to Sport mode so he doesn't get rear-ended and/or die.

This is an absolute f-----g joke on BMW's part.
I don't have any issues while on the freeway. Just from takeoff.
__________________
2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
Reply With Quote
  #10  
Old 08-14-2011, 05:31 AM
MisterScott MisterScott is offline
Officially Welcomed to the 'Fest
Location: DFW
 
Join Date: May 2011
Posts: 102
Mein Auto: 2010 550GT
I had an issue on the freeway after the flash. I had to press the accelerator to the floor and hold it there to get the car to react to pass a friggin Jetta. I just start banging down on the paddle shifters.
__________________
2010 550GT, 2013 X5 w/ M-Sport, 2012 F-350 Superduty King Ranch Crew Cab SRW 8' Bed, 2010 Kawasaki Concours 14, 2013 Chaparral 264 Sunesta Extreme VP 380 6.0.
Reply With Quote
  #11  
Old 08-14-2011, 05:58 AM
Needsdecaf's Avatar
Needsdecaf Needsdecaf is offline
Everything's Bigger in TX
Location: The Woodlands, TX
 
Join Date: Sep 2006
Posts: 7,106
Mein Auto: 2007 MDX
Quote:
Originally Posted by MisterScott View Post
I had an issue on the freeway after the flash. I had to press the accelerator to the floor and hold it there to get the car to react to pass a friggin Jetta. I just start banging down on the paddle shifters.
After what flash, software update?
__________________
2011 535i
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.

Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.

Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians
Reply With Quote
  #12  
Old 08-14-2011, 07:26 AM
MisterScott MisterScott is offline
Officially Welcomed to the 'Fest
Location: DFW
 
Join Date: May 2011
Posts: 102
Mein Auto: 2010 550GT
The most recent one done a week ago. I don't have the version number off hand.
__________________
2010 550GT, 2013 X5 w/ M-Sport, 2012 F-350 Superduty King Ranch Crew Cab SRW 8' Bed, 2010 Kawasaki Concours 14, 2013 Chaparral 264 Sunesta Extreme VP 380 6.0.
Reply With Quote
  #13  
Old 08-14-2011, 08:13 AM
pyramid pyramid is offline
Registered User
Location: INA
 
Join Date: May 2011
Posts: 58
Mein Auto: Serpent S966
Quote:
Originally Posted by MisterScott View Post
The most recent one done a week ago. I don't have the version number off hand.
ISTA/P v4.2
Reply With Quote
  #14  
Old 08-14-2011, 08:22 AM
pburleson pburleson is offline
Officially Welcomed to the 'Fest
Location: CT
 
Join Date: Jun 2011
Posts: 114
Mein Auto: 2011 535iX
How do you know what current flash is loaded on your car?
Reply With Quote
  #15  
Old 08-14-2011, 08:57 AM
MisterScott MisterScott is offline
Officially Welcomed to the 'Fest
Location: DFW
 
Join Date: May 2011
Posts: 102
Mein Auto: 2010 550GT
Good question. I guess I trust what the dealer told me. My invoice says:

VERSION 1 (EMP# 5239, 05AUG11 07:49): 3739 DME software calibration update Per sib 12 09 11 programmed and encoded vehicle. Test drove vehicle after programming update. Vehicle operating according to manufacturer specifications.

That's it. Is there anywhere on the display where I can see the load versions?
__________________
2010 550GT, 2013 X5 w/ M-Sport, 2012 F-350 Superduty King Ranch Crew Cab SRW 8' Bed, 2010 Kawasaki Concours 14, 2013 Chaparral 264 Sunesta Extreme VP 380 6.0.
Reply With Quote
  #16  
Old 08-14-2011, 09:23 AM
knecht knecht is offline
Registered User
Location: Chicago
 
Join Date: Jun 2011
Posts: 36
Mein Auto: 2011 535i Xdrive
Quote:
Originally Posted by pyramid View Post
ISTA/P v4.2
How do you know this? If I tell me dealer ISTA/P 4.2 will they know what it is? I plan on meeting with my SA tomorrow.
__________________
2011 535xi, Dark Graphite Metallic, Oyster/Black Dakota Leather, Dark Wood, Premium Package, Cold Weather Package, iPod-USB, Sat Radio
Reply With Quote
  #17  
Old 08-14-2011, 09:24 AM
Sonnie Sonnie is offline
Registered User
Location: Lower Bama
 
Join Date: Feb 2011
Posts: 82
Mein Auto: Shopping
If you tell them to follow SIB 12 9 11, that should take care of it.
Reply With Quote
  #18  
Old 08-14-2011, 10:14 AM
knecht knecht is offline
Registered User
Location: Chicago
 
Join Date: Jun 2011
Posts: 36
Mein Auto: 2011 535i Xdrive
They told me my car already has SIB 12 9 11. So they wouldn't update. The dealer claims that is the latest version.
__________________
2011 535xi, Dark Graphite Metallic, Oyster/Black Dakota Leather, Dark Wood, Premium Package, Cold Weather Package, iPod-USB, Sat Radio
Reply With Quote
  #19  
Old 08-14-2011, 11:42 AM
Me530's Avatar
Me530 Me530 is offline
Happily Driving
Location: Illinois
 
Join Date: Feb 2005
Posts: 5,612
Mein Auto: 2014 550i M Sport
Quote:
Originally Posted by Sonnie View Post

Fourth, file a formal complaint with NTSB (National Transportation Safety Board)…......

https://www-odi.nhtsa.dot.gov/ivoq/

NTSB will document the complaints…...... and by law they are required to report the complaints to BMW. Similar to the Better Business Bureau, if enough complaints are filed, they will investigate and may very well eventually force BMW to offer a resolution.

Be as specific as possible in all your explanations and documentation. You can give examples of how you feel it is dangerous and a safety issue. You can also state that BMW has recognized it as an issue in the 535i models, calling it an "Acceleration Delay" and have issued an SIB software update to repair it, but have not done so for the 528i.
This is extremely important. In fact so important that it should probably be the first thing on the list.
__________________
2014 550i M Sport, European Delivery May 2014
2013 X3 35i, Dealer Delivery July 2012

Gone, but not forgotten:
2006 530i
, European Delivery June 2005
2008 335i Coupe 6MT, PCD November 2007
2011 550i M Sport, European Delivery May 2011


BMWCCA #350568
Reply With Quote
  #20  
Old 08-14-2011, 01:17 PM
Sonnie Sonnie is offline
Registered User
Location: Lower Bama
 
Join Date: Feb 2011
Posts: 82
Mein Auto: Shopping
Yep... this is extremely important and should not by any means be overlooked and thought of to be less important in the process. However, it is important that we also contact our Service Advisors and file complaints with BMW so that we can affirm to NTSB that we have attempted to rectify the safety issue with BMW to no avail. I do think most of us have brought it up to BMW in some way or another. Mine is actually documented in the vehicle history, so they cannot deny that I have not brought it to their attention.
Reply With Quote
  #21  
Old 08-14-2011, 02:04 PM
nealh nealh is offline
Officially Welcomed to the 'Fest
Location: Tampa, FL
 
Join Date: Oct 2003
Posts: 1,006
Mein Auto: '14 428i vert
Haven driven my 650i, I know a tip-in issue(this was awful, smash the accel and nothing from my big burly 8cyl).
So far my 535i has a very slight lag, which seems more turbo like, IMHO.
__________________
'14 428i vert Estoril Blue,Black leather w blue stitch and blue accent, M Sport,PP,TP,DA,DHP,CWP, HK, auto high beams
'11 535i Space Gray/Cinammon Brown/Anthracite/M-Sport/2TB/PP1&2,ZAV,ZCV,CWP,HUD,4zone,S&T camera,BMW apps..ED 06/27/11 retired
'08 650i retired
Reply With Quote
  #22  
Old 08-14-2011, 02:42 PM
alewifebp's Avatar
alewifebp alewifebp is offline
Officially Welcomed to the 'Fest
Location: Northern NJ
 
Join Date: Sep 2008
Posts: 940
Mein Auto: 2014 550i
This seems to be a BMW trait with the electronic shifter transmissions. My NA 4.8 X5 exhibits similar throttle delay, and can make it very difficult to modulate the power smoothly. I've had many occasions where I seem like I am erratically accelerating when in fact it's the throttle not acting linearly. And just like the F10, there was a fix for the transmission programming that improved it, but it still remained.

FWIW, when I had a 535ix loaner, it seemed to be pretty smooth overall, although my time with the car was admittedly limited.
__________________
ED on 7/18/2014: 2014 550i, Space Gray, Mocha. M Sport, Cold Weather, DAP, Executive, Lighting
PCD on 9/6/2011: 2011 550i, DSB, black/oyster. Prem 2, Conv, Ventilated, HUD, Sport, DHP, SAT
Reply With Quote
  #23  
Old 08-16-2011, 06:05 PM
mldbayern mldbayern is offline
Registered User
Location: florida
 
Join Date: Jun 2011
Posts: 24
Mein Auto: 528i
brought the issue to my dealer, after owning my 528i for less than three months, and discovering this site (and thread) as a result of my concern with what i was experiencing with my brand new car. my dealership (TPA) is also useless, and initially ignored my concern altogether, then said it occurs in 535 models and not 528's. i'm calling ntsb and filing complaints in writing, AND WILL REQUEST direct on next steps as i'm afraid to take my car into the dealership if their that clueless about their own product (or playing stupid). here's the most recent incident in which i was almost in an accident; was in a far right lane, behind a city bus, and tried to change lanes to get out from behind the bus..... my car wouldn't move. the driver in the car approaching to my left, looked at me like i had NO BUSINESS be in a driver's seat. i signaled to switch lanes, had plenty of room and began moving left, but the car wouldn't respond as it should... as MOST cars would, unless its ancient! this is a MAJOR safety issue!!!
Reply With Quote
  #24  
Old 08-18-2011, 08:10 AM
BHumphrey BHumphrey is offline
Registered User
Location: South Shore Boston, MA
 
Join Date: Dec 2008
Posts: 16
Mein Auto: 2003 530i
I have a 528 sport tranny. This tip in problem is very noticeable in N mode, and goes away in S+ mode, so I end up driving in S+ mode....what an enormous difference in throttle response, as well as shifting at higher spot on the engine torque curve.

Haven't gone back to the dealer to complain, just figured they would tell me it is normal (meaning that BMW purposely programmed the car for fuel economy in N mode)...

But, now I will complain. Thanks for the thread, and meanwhile I'm driving in S+ mode all the time.
Reply With Quote
  #25  
Old 08-18-2011, 11:15 AM
BHumphrey BHumphrey is offline
Registered User
Location: South Shore Boston, MA
 
Join Date: Dec 2008
Posts: 16
Mein Auto: 2003 530i
Quick update...

haven't gone to the dealer yet, but the accelerator reset procedure outlined in the first post of this thread did make a noticeable improvement in the tip in delay at standing stop....be curious to see if the situation degrades and I need to reset again...
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > F10 / F11 (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 04:36 AM.


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