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car jerk/idle jerk/accerleration/jerk...how big an issue is this?

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Old 05-20-2009, 07:42 AM
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Hey all,

I'm seriously looking into getting a 545i, or at least a 530i ('04 or '05). Most likely it will be an auto tranny. But I've been reading a lot on this "idle jerk" or "acceleration jerk" or some kind of car jerk on these 5 series. I've test driven an 04 545i and loved it and did not feel this 'jerk' during the test drive, but I didn't know about this issue then. How 'serious' of an issue is this to those of you who experience(d) this?

Does a manual transmission experience this?

Currently have a 325i and would love to get into a 545i.

Thanks all for the help.
Old 05-20-2009, 05:54 PM
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anyone? bump
Old 05-20-2009, 06:06 PM
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Originally Posted by alphaquhp' post='885008' date='May 20 2009, 06:54 PM
anyone? bump
i had the software update regarding this issue.


NO MORE JERKING!!!
Old 05-20-2009, 06:10 PM
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Originally Posted by alphaquhp' post='884365' date='May 20 2009, 09:42 AM
Does a manual transmission experience this?
When I was researching my 545i, I found this review, http://www.caranddriver.com/reviews/hot_li..._take_road_test. One read and I had to have the manual tranny...
Old 05-20-2009, 06:34 PM
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Originally Posted by NoName545i' post='885035' date='May 20 2009, 10:06 PM
i had the software update regarding this issue.


NO MORE JERKING!!!
+1 here
Old 05-20-2009, 06:56 PM
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I didn't realize that this was a known problem, but I have an '07 530 and often when I am coasting (for example on a turn or stop and go traffic on the highway) and then put my foot back in the gas, I get a very solid jerk. It is literally so strong that each time it happens I end up checking my mirror to see if I have been rear-ended at low speed. Pretty dramatic.

Is this the problem that is common on these cars or am I experiencing something completely different?

-Josh
Old 05-20-2009, 08:33 PM
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Originally Posted by NoName545i' post='885035
When I was researching my 545i, I found this review, http://www.caranddriver.com/reviews/hot_li..._take_road_test. One read and I had to have the manual tranny...
Id love to have a manual transmission, unfortunately, all the used 04s and 05s that i've seen have been automatics. But with a 4.4 V8, ill take it in any flavor

Originally Posted by KnottyMonkey' post='885093' date='May 20 2009, 09:56 PM
I didn't realize that this was a known problem, but I have an '07 530 and often when I am coasting (for example on a turn or stop and go traffic on the highway) and then put my foot back in the gas, I get a very solid jerk. It is literally so strong that each time it happens I end up checking my mirror to see if I have been rear-ended at low speed. Pretty dramatic.

Is this the problem that is common on these cars or am I experiencing something completely different?

-Josh
With some of the researching i've been doing, yes it is a common problem, but people have been able to remedy it. Good luck with yours!
Old 05-20-2009, 09:34 PM
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Originally Posted by alphaquhp' post='884365' date='May 20 2009, 08:42 AM
Hey all,

I'm seriously looking into getting a 545i, or at least a 530i ('04 or '05). Most likely it will be an auto tranny. But I've been reading a lot on this "idle jerk" or "acceleration jerk" or some kind of car jerk on these 5 series. I've test driven an 04 545i and loved it and did not feel this 'jerk' during the test drive, but I didn't know about this issue then. How 'serious' of an issue is this to those of you who experience(d) this?

Does a manual transmission experience this?

Currently have a 325i and would love to get into a 545i.

Thanks all for the help.
You can live with it until you need glasses, then you should stop!
Old 05-20-2009, 09:36 PM
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Originally Posted by KnottyMonkey' post='885093' date='May 20 2009, 07:56 PM
I didn't realize that this was a known problem, but I have an '07 530 and often when I am coasting (for example on a turn or stop and go traffic on the highway) and then put my foot back in the gas, I get a very solid jerk. It is literally so strong that each time it happens I end up checking my mirror to see if I have been rear-ended at low speed. Pretty dramatic.

Is this the problem that is common on these cars or am I experiencing something completely different?

-Josh
You are experiencing "Transmission Slam", it is a known issue at BMW, it can be addressed by a software upgrade or if persistent, with a transmission replacement! So get yourself to the dealer!!
Old 05-20-2009, 09:53 PM
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Originally Posted by alphaquhp' post='884365' date='May 20 2009, 10:42 AM
Hey all,

I'm seriously looking into getting a 545i, or at least a 530i ('04 or '05). Most likely it will be an auto tranny. But I've been reading a lot on this "idle jerk" or "acceleration jerk" or some kind of car jerk on these 5 series. I've test driven an 04 545i and loved it and did not feel this 'jerk' during the test drive, but I didn't know about this issue then. How 'serious' of an issue is this to those of you who experience(d) this?

Does a manual transmission experience this?

Currently have a 325i and would love to get into a 545i.

Thanks all for the help.
Annoying yes. Avoidable, yes. Serious, no. I would not let this issue stop me from buying a 545i. If you drive the Steptronic in manual mode, you avoid it alltogether. It's easiest to produce in full automatic "D" mode, but you can avoid it by paying attentiion to what gear you are in and not accelerating when the tranmission is shifting or about to shift from 2 to 1. It seems to be a problem where the engine and transmission electronics get out of sync with the actual tranmission mechanical state.


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