Car engine hesitates
11-08-2009 | 09:49 AM
#1
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Hello,
I have 550i for a year and I haven't had any troubles with the car so far, but the only thing that annoys me is the engine hesitates when I quickly accelerate or hard press gas pedal from a stop position.
Is it the BMW design or something goes wrong with my car engine? Does anyone has this symptom with 550i?
Thank you very much in advance.
I have 550i for a year and I haven't had any troubles with the car so far, but the only thing that annoys me is the engine hesitates when I quickly accelerate or hard press gas pedal from a stop position.
Is it the BMW design or something goes wrong with my car engine? Does anyone has this symptom with 550i?
Thank you very much in advance.
11-08-2009 | 10:35 AM
#2
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Joined: Dec 2005
Posts: 1,261
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From: Chippenham, Wiltshire UK
My Ride: F11 535i M-Sport,, Silver, Black Leather, LED Adaptive headlights
Model Year: 2015
Engine: N55
Its not the engine its the transmission, yes it is a known problem.
if you get it fixed you have worked a miracle.
In a nutshell, the car tries to move off in gear 2 to aid economy. When you press the gas hard the car tries to select first to apply the power you want, so there is a delay until that is selected, then the car takes off!
I had ZF send an engineer to test mine, apparently it is a 'feature' and within operating parameters.
I think it is shit software, but hey, what would I know.
if you get it fixed you have worked a miracle.
In a nutshell, the car tries to move off in gear 2 to aid economy. When you press the gas hard the car tries to select first to apply the power you want, so there is a delay until that is selected, then the car takes off!
I had ZF send an engineer to test mine, apparently it is a 'feature' and within operating parameters.
I think it is shit software, but hey, what would I know.
11-09-2009 | 04:58 PM
#3
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Joined: Dec 2008
Posts: 59
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From: London, UK
I have this same symptom on my '04 545i... I noticed there is an SIB for something that sounds identical, but on the N54/N52K engined models and it's fixed by an EGS software update:
http://www.bmwtis.com/tsb/bulletins/bullet...mp/B240308g.htm
Not sure how to find out if there is a similar update for my car (and the 550i). KAF, did you look into this side of it when you were trying to get a fix?
http://www.bmwtis.com/tsb/bulletins/bullet...mp/B240308g.htm
Not sure how to find out if there is a similar update for my car (and the 550i). KAF, did you look into this side of it when you were trying to get a fix?
11-09-2009 | 06:02 PM
#5
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Joined: Oct 2007
Posts: 11,084
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From: Thousand Oaks, California
My Ride: 2008 550i Jet Black on Black Leather, SAT with Paddles, Logic 7, Comfort Seats, NAV, Sport Package, PDC, Xenons, Sirius, Trinity 12W LED Angel Eyes, RPi GT Exhaust, M rear spoiler, ACS Roof Spoiler, Tinted Tail Lights, Bimmian Carbon Fiber Pillar Trim, Bimmian Shadow 550i emblem, RPi Scoop, E60 Forum Cling, Mtec bulbs in fog lights, Mtec 2W LED for License Plate Light Bulbs, K&N Filter, Bimmian LED Smoked Side Markers, Blackout roundels, Carbon Fiber Kidney Grills.
Retired Rides - 1989 325i convertible, 1995 M3, 2002 X5, 2005 545i, 2008 X5 (Lemon)
Try the 25 second transmission reset and get into the habit!! 
11-10-2009 | 10:02 AM
#6
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Joined: Dec 2005
Posts: 1,261
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From: Chippenham, Wiltshire UK
My Ride: F11 535i M-Sport,, Silver, Black Leather, LED Adaptive headlights
Model Year: 2015
Engine: N55
Originally Posted by spandex' post='1051175' date='Nov 10 2009, 01:58 AM
I have this same symptom on my '04 545i... I noticed there is an SIB for something that sounds identical, but on the N54/N52K engined models and it's fixed by an EGS software update:
http://www.bmwtis.com/tsb/bulletins/bullet...mp/B240308g.htm
Not sure how to find out if there is a similar update for my car (and the 550i). KAF, did you look into this side of it when you were trying to get a fix?
http://www.bmwtis.com/tsb/bulletins/bullet...mp/B240308g.htm
Not sure how to find out if there is a similar update for my car (and the 550i). KAF, did you look into this side of it when you were trying to get a fix?
1. Nothing to do with DSC.
2. Tranny reset makes no difference on mine.
3. The SIB seems to relate to this problem, but only in later models. If you are outside of warranty tough !! Also my car has this problem, cold or hot, the SIB 'claims' it is during warm up phase only. My arguements with BMW were in 2005/6, there was an update that claimed to address the issue...................it didn't!
I have to say I would be reluctant to buy a new BMW again, I would go for an Ex-demo so I could check it did not suffer this problem.
PS. Jaguar used the same gearbox and had the same issues................they denied them as well.
11-10-2009 | 01:29 PM
#7
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Joined: Jul 2009
Posts: 214
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From: Calgary, AB
My Ride: 2008 550i M-sport, retrofitted heated M-sport steering wheel with paddles, Sport-auto transmission
Originally Posted by halong50' post='1050045' date='Nov 8 2009, 11:49 AM
Hello,
I have 550i for a year and I haven't had any troubles with the car so far, but the only thing that annoys me is the engine hesitates when I quickly accelerate or hard press gas pedal from a stop position.
Is it the BMW design or something goes wrong with my car engine? Does anyone has this symptom with 550i?
Thank you very much in advance.
I have 550i for a year and I haven't had any troubles with the car so far, but the only thing that annoys me is the engine hesitates when I quickly accelerate or hard press gas pedal from a stop position.
Is it the BMW design or something goes wrong with my car engine? Does anyone has this symptom with 550i?
Thank you very much in advance.
Prior to the update the software had not been updated since build date (03/07)
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