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SUVs BMW X3 & X5 BMW X3 hesitation on acceleration
229 messages, Last post on Dec 02, 2009 at 2:30 PM
You are in the BMW X3 & X5 Forum. Your Hosts are steve_ & tidester
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Replying to: cincyart (Mar 05, 2007 10:09 am) I urge you don't buy the BMW, your buying yourself a head ache., big time... I need a SAAAAAAAAAAAAAAAAAAAFE CAR and DEPENDABLE... CAR.. BUT people buy BMW because they need a bigger halo... Our BMW still in the dealer, called us, coordinator said,, we can't duplicate the problem.. the've been saying that for a whole week... I buy a Chinese bike before buying another BMW...............
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Replying to: zeroroi (Dec 18, 2008 3:17 pm) |
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Replying to: kesnow (Dec 17, 2008 7:53 pm) I haven't had it happen for months now, so not worried. When you mentioned that the 07 has a six speed trany and starts out in first now makes me wonder if thats what they did to eliminate the hesitation in drive mode from starting in 2nd gear? but you still have a problem. If I remember rite someone has a post explaining that when your foot comes off the accelerator the x models are supposed to shunt fuel to save gas, I wouldn't doubt since the vehicle seems to run on more software than it should that the system could could be shunting more fuel in your vehicle, not an expert but something to look into. |
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Replying to: fscalise (Dec 17, 2008 5:48 pm) My problem was traced to extra force because of shoddily-glued felt strips in the guide channels on either side of the window (inside the door). Some contact cement and some bad words and that was straightened out.... Have fun! (the pop sounds like the plastic clip breaking or the metal arm popping out of it.) |
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| This transmission issue is a very interesting problem. It seems to be that the transmission screws up in the learning (your driving style) process. Some people don’t seem to have the issue, others do. The curious thing is that after they re-load software, the car is OK for a while. Then its learning seems to get confused and this is where the trouble shows up. After reading it, I would be very careful buying one until I knew they had it fixed. Of course you could drive in manual/auto mode and not have the problem. It smacks of a nasty (buried in the code somewhere with a pretty dangerous, as the posts describe, stalling for a few seconds in front of oncoming traffic), failure mode) software bug. What BMW needs to do is upload the ‘learning’ from a bunch of complaint vehicles and use that information to track the problem down. This exercise will learn (punny) the ISO-compliant software developer losers, who trade common sense for regulatory compliance, some lessons in software development. This will mean sending said developers to the field with the tools to suck this information out of the cars (or training the update computers to do it), take it back to the lab, compare it with the virgin 'learn', apply the very well documented driver input that causes the problem, and fix the damn thing. Of course, they might have built the code on a MS Windows operating system which stalls when someone puts a CD in while they're trying to accelerate. Maybe its the communication bus hanging up? Who knows? | |
 Uncle Fester... as a software developer I recommended they "black box" my car and they declined. It only seemed logical that they could take the event logs from my car and cross reference them to a vehicle they thought operated correctly.That would mean they would have to admit there was a problem and thereby open themselves to a class action law suit. Easier for them to stall or buy people off. What they don't realize is by practicing this technique they lose 5 potential buyers for every PO'd owner who will bad mouth them like me until they formally fix and acknowledge the issue.
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Replying to: daddyman (Dec 15, 2008 8:02 am) Even if you're not in CA, I'd appreciate the info. Thanks. |
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I am thinking about a new '09 X3 but after extensive research I'm concerned the auto tramission hesitation problem has not been adequately addressed. My salesperson assures me the problem described in the '07 and '08 Steptronic transmission has been corrected and the new '09 transmissions are problem free. Does anyone know if this is true? Thanks for the help.
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Replying to: xrayd55 (Jan 27, 2009 7:11 pm) Rule #2 See rule #1 I'm tempted to add a #3 don't trust BMW because they really distinguished themselves by never acknowledging the issue or ever fully fixing it for affected drivers. My best advice for you is to thoroughly test drive it. Politely ask the salesperson to remain silent if it's distracting and be sure you get more than a once-around-the-block chance to see how it handles. You would principally notice it has a hesitation in acceleration when starting from a dead stop or a very rough 'herky jerky' sensation when accelerating from low speeds. Mine also is noticable when slowing down to lower speeds then suddenly accelerating, as if you were preparing to stop for a red light then it turned green before you made it to the intersection. Best of luck, it's still a great car but you don't want to be surprised.
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Replying to: sansnil (Jan 27, 2009 7:37 pm)
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