Bimmerfest - BMW Forums

Bimmerfest - BMW Forums (http://www.bimmerfest.com/forums/index.php)
-   X3 E83 (2004 - 2010) (http://www.bimmerfest.com/forums/forumdisplay.php?f=65)
-   -   Sudden unintended acceleration (http://www.bimmerfest.com/forums/showthread.php?t=636052)

MSVX3 07-29-2012 02:42 PM

Sudden unintended acceleration
 
4 Attachment(s)
Hi all,

On Friday July 27 I was slowly pulling into my driveway and suddenly my 2007 BMW X3 took off. I managed to steer all the way, missed the wall, hit a tree, drove on my neighbour's lawn and barely missed her SUV (minor scratches to the rear bumper). Finally I used the emergency brake, put it in neutral and turned the car off to stop it while the engine was still reving high. I had my foot on the brake hence the tire marks on my driveway. A simple search on internet reveals other similar incidents. I have posted a few pictures.

Best,

suthtow 07-29-2012 04:48 PM

Not good dude. The throttle is fly by wire, so it sounds like wires are rubbed through our there is interference. Call your dealer to see if there is warranty. Or tow it to a good Indy shop. Sorry.

Sent from my C771 using Bimmer App

IslandS52 07-29-2012 05:23 PM

Really scary! Not sure if my wife could react well in that situation with our 08. Please report the incident to NHTSA and any resolutions from BMWNA.

nightmareuki 07-29-2012 08:53 PM

woow that sux. Ive experienced surges but never full on acceleration

SonicBoom 07-30-2012 05:46 AM

I think your bimmer saw a prowler in that bush and tried to snuff him out. You should thank your bimmer.

:-)

Frenchx3 07-30-2012 08:33 AM

Wow...that sucks, but all things considered, it could've been a lot worse. Nice job missing the garage and your neighbors car. Let us know what the hell happened when you figure it out.

BMW FAN95 07-30-2012 04:14 PM

:thumbup:
Quote:

Originally Posted by Frenchx3 (Post 6980365)
Wow...that sucks, but all things considered, it could've been a lot worse. Nice job missing the garage and your neighbors car. Let us know what the hell happened when you figure it out.


murderland 07-30-2012 05:38 PM

next time it happens, throw it into neutral. i suggest you keep your foot on the brake while making those slow maneuvers that should give you enough time to brake harder and throw it into neutral before you hit anything.

MSVX3 09-13-2012 08:14 PM

I got an update on this incident. I sent the X3 to a BMW dealership for investigation. I was told that the Vanos solenoid sensors were faulty causing the vehicle to surge. I don't know enough about these sensors so I will have to trust BMW. My concern is that what if they fail again? What kind of an accident am I going to end up in? If a faulty sensor can have such a serious consequence, then there is a design flaw here.

nightmareuki 09-14-2012 07:25 AM

I smell bull****

1972ford 09-14-2012 07:46 AM

I'd like a more thorough explanation than that, too. Are those sensors really able to cause wide open throttle? Scary stuff, glad you're ok! Nice quick reaction.

And I have to say, this is another reason why I prefer manual transmission cars. First reaction would be to clutch in and brake; it's hard to quickly reach over and throw an auto into neutral, even for quick-thinking people, you're going to be more immediately concerned with steering and braking while the car is still in gear...

usaret 09-14-2012 08:42 AM

A couple of videos on the subject.


http://www.youtube.com/watch?v=VZZNR...eature=related

http://www.youtube.com/watch?v=8PgCL...layer_embedded

I haven't been able to find info on when BMW put brake override on all their cars.

EDIT: I just found this.

Quote:

BMW

BMW originated the electronic throttle pedal or “drive-by-wire” system in the 1988 BMW 750iL. By 1994 all BMW products sold in the United States had electronic throttle pedals. Since the very first system in 1988, every BMW Group electronic throttle system (including BMW, MINI and Rolls-Royce) has incorporated a brake override feature. The brake override feature is installed on all transmission versions: automatic, manual, sequential manual gearbox (SMG) and dual-clutch transmission (DCT).
http://www.thecarconnection.com/news...e-new-standard

Dominic49 09-14-2012 12:02 PM

Quote:

Originally Posted by usaret (Post 7073869)
A couple of videos on the subject.


http://www.youtube.com/watch?v=VZZNR...eature=related

http://www.youtube.com/watch?v=8PgCL...layer_embedded

I haven't been able to find info on when BMW put brake override on all their cars.

EDIT: I just found this.


http://www.thecarconnection.com/news...e-new-standard

the statement about all bmws since 94 having electronic throttles is bogus.

regardless, pushing in the clutch/slapping the shifter into neutral is very simple and something that anyone needs to be familiar with as a runaway engine can happen on ANY internal combustion car regardless of electric throttle or not.

hell on the our m54 based cars the throttle body doesn't even open until more then roughly 30% of throttle is used, the idle control valve does the grunt of the low load/low input work.

usaret 09-14-2012 12:36 PM

Quote:

Originally Posted by Dominic49 (Post 7074327)
the statement about all bmws since 94 having electronic throttles is bogus.

What is a Throttle Actuator on an E36?


http://www.realoem.com/bmw/showparts...00&hg=13&fg=15

Evlengr 09-14-2012 08:25 PM

Smell BS
 
They are covering up something to avoid a major lawsuit. Sign off on NOTHING until you speak to an attorney. This is a lot more serious than just a messed up bumper.

Make sure that you get your hands on any part that is responsible.

There is no doubt in my mind they are hiding something.

If they "Threw Away" the part then get them to show a list in writing they replaced, then go to an ASE certified BMW mechanic and get them to do an evaluation and check if the parts are really replaced and look for any new parts not listed.


This is what ruins the BMW experience.......Lying.

UncleJ 09-16-2012 08:11 AM

Well, it wasn't the "floormats":tsk:. Good time to mentally review your check list for dealing with a runaway engine.:yikes:

MSVX3 10-01-2012 08:27 PM

More updates. After the BMW service center diagnosed the problem with the sensors they charged me $730 to replace the Vanos sensors. I spoke to two people including the manager of the service center to confirm that the sensors caused the surge/un-intended acceleration (exact wording on the service record that they gave me) and I was reassured that the answer is yes. I got the X3 back and called BMW Canada and complained, as a simple sensor failure should not have such a significant consequence. After a week they called me back and said their engineers assessed the issue and they believe that there is no way that the failure of Vanos sensors could have caused the unintended acceleration! Which BMW do I believe? I called the BMW service center and asked for re-imbursement for their wrong diagnosis (according to BMW Canada) but so far to no avail. I am very disappointed with BMW Canada and the way they are handling this case. The BMW Canada representative that I spoke to refused to let me speak to his supervisor. I will give them another week before I pursue legal action. BMWs are great cars but this kind of customer service is unacceptable.

nightmareuki 10-01-2012 08:39 PM

there is no way vanos sensors could have cause this. what vanos does is control the ammout of the air into the negine and the timing of the combustion(kinda like vtec in honda or vvt in toyota), there is no way it could cause acceleration of any measurable king let alone full on WOT it mostly for performance and efficiency. once i was told by a dealer that the reason there was no oil in the engine in the car i was about to test drive was because it evaporated, i still lol when think of it

fivepointnine 10-01-2012 08:54 PM

a decent lawyer would be frothing at the mouth for a case like this!!!

Dominic49 10-02-2012 05:08 PM

Quote:

Originally Posted by usaret (Post 7074383)
What is a Throttle Actuator on an E36?


http://www.realoem.com/bmw/showparts...00&hg=13&fg=15

that is used for ASC+T not for pedal--> throttle actuation

usaret 10-03-2012 06:30 AM

Quote:

Originally Posted by Dominic49 (Post 7109675)
that is used for ASC+T not for pedal--> throttle actuation

Thank you.

You seem to be knowledgeable on the subject...... when did BMW go 100% electronic throttle? And did they all have brake override from day one or was that feature added later on?

MSVX3 12-01-2012 02:32 PM

Thanks everyone for your comments. At the end BMW did nothing for me. Traded in for an 09 X5 and got a few free of charge services from the dealer that is all. End of the story...

Sent from my SGH-I747M using Bimmer App

ACT670 05-06-2014 01:31 PM

I had a very similar problem recently with my BMW 328D. Did you report this to NHTSA?

halltristan 05-06-2014 03:38 PM

Quote:

Originally Posted by ACT670 (Post 8324191)
I had a very similar problem recently with my BMW 328D. Did you report this to NHTSA?


So you did something stupid and want to act like it's the car's fault too?


Sent from BimmerApp mobile app

Squiddie 05-06-2014 03:48 PM

The big question here is why did the emergency brake do anything while the foot brake presumably did not. The emergency brake should be much weaker.

A simple stuck gas pedal (electronics) would not disable the main brake. So to fit the symptoms you would look at a situation where the car electronics also disengaged the brakes, e.g. the esp system.


All times are GMT -7. The time now is 03:38 AM.

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