Car feels like it was pushed forward standing still

M40i4me · 04-28-2011, 04:41 AM

Every now and then when I am at a dead stop, it feels like someone tapped the back of the car. My foot is firmly on the brake. In fact twice I was at the gas station filling up with the car off with radio ready on and felt the same thing. Very strange. It has happened about 5 times in my first 3000 miles and after the car is driven at least 20 miles. Scares the crap out of me when it happens as I look in the rearview mirror and no one is behind me.

fdriller9 · 04-28-2011, 11:19 AM

Maybe one of these:

http://www.e90post.com/forums/showth...00#post9433100

JuppiOne · 04-28-2011, 01:12 PM

its the NIC, although it is strange that it react that way, but BMW consider thats normal, but I think its just poor engineering

JuppiOne · 04-28-2011, 01:17 PM

here is the service bulletin:

SI B 24 06 06
Automatic Transmission October 2006
Technical Service

This Service Information bulletin supersedes SI B24 06 06 dated August 2006.

designates changes to this revision

SUBJECT
A Slight Bump is Felt Shortly after the Vehicle Comes to a Stop

MODEL
E85 3.0 and 3.0si with the GA6HP19Z transmission produced up to 07/2006

E90, E91 All with the GA6HP19Z transmission produced up to 09/2006

SITUATION
A slight one-time bump is felt shortly after the vehicle comes to a stop.

CAUSE
This is due to the design concept of "NIC", or Neutral Idle Control. This gearbox feature uncouples the torque converter whenever the vehicle is stationary, gearbox oil temperature is between 20°C and 120°C, and the brakes are applied. By disconnecting the torque converter the load on the engine is reduced to a minimum. Please explain this feature and its operation to the customer.

CORRECTION
For the E85, revised EGS software is available with Progman 23.0 or higher.

For the E90, E91 revised EGS software is expected in a future release of Progman. Until that time, on a customer complaint basis only, this feature can be deactivated as described in the procedure below.

PROCEDURE
E85 – On a customer complaint basis only, reprogram the EGS module with Progman 23.0 or higher. It is not possible to deactivate this feature using the retrofit option on the E85.

E90, E91 - On a customer complaint basis only, perform the Retrofit - "Converter lockup clutch" using Progman 23.0 (Target Data status: E89x-06-09-520) or higher. Follow the "Retrofit" procedures as outlined in SI B09 05 01.

04-28-2011, 04:41 AM	#1
M40i4me Lieutenant Colonel 1039 Rep 1,531 Posts Drives: 2021 X3 M40i Join Date: Apr 2011 Location: NJ iTrader: (0) Garage List 2021 X3 M40i [10.00]	Car feels like it was pushed forward standing still Every now and then when I am at a dead stop, it feels like someone tapped the back of the car. My foot is firmly on the brake. In fact twice I was at the gas station filling up with the car off with radio ready on and felt the same thing. Very strange. It has happened about 5 times in my first 3000 miles and after the car is driven at least 20 miles. Scares the crap out of me when it happens as I look in the rearview mirror and no one is behind me. __________________ 2021 M40i Phytonic Blue / Black Vernasca 2020 X5 xDrive 40i Tanzanite Blue / Coffee Vernasca 2011 328xi. Space Grey - Sold 188,925 great miles
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04-28-2011, 11:19 AM	#2
fdriller9 Banned 255 Rep 7,089 Posts Drives: '06 AW 330xi Join Date: Mar 2009 Location: North Jersey/Philly/NYC iTrader: (4) Garage List 2006 330xi [6.44]	Maybe one of these: http://www.e90post.com/forums/showth...00#post9433100
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04-28-2011, 01:12 PM	#3
JuppiOne Captain 25 Rep 691 Posts Drives: everyone crazy Join Date: Feb 2010 Location: MO iTrader: (4)	its the NIC, although it is strange that it react that way, but BMW consider thats normal, but I think its just poor engineering Last edited by JuppiOne; 04-28-2011 at 01:17 PM..
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04-28-2011, 01:17 PM	#4
JuppiOne Captain 25 Rep 691 Posts Drives: everyone crazy Join Date: Feb 2010 Location: MO iTrader: (4)	here is the service bulletin: SI B 24 06 06 Automatic Transmission October 2006 Technical Service This Service Information bulletin supersedes SI B24 06 06 dated August 2006. designates changes to this revision SUBJECT A Slight Bump is Felt Shortly after the Vehicle Comes to a Stop MODEL E85 3.0 and 3.0si with the GA6HP19Z transmission produced up to 07/2006 E90, E91 All with the GA6HP19Z transmission produced up to 09/2006 SITUATION A slight one-time bump is felt shortly after the vehicle comes to a stop. CAUSE This is due to the design concept of "NIC", or Neutral Idle Control. This gearbox feature uncouples the torque converter whenever the vehicle is stationary, gearbox oil temperature is between 20°C and 120°C, and the brakes are applied. By disconnecting the torque converter the load on the engine is reduced to a minimum. Please explain this feature and its operation to the customer. CORRECTION For the E85, revised EGS software is available with Progman 23.0 or higher. For the E90, E91 revised EGS software is expected in a future release of Progman. Until that time, on a customer complaint basis only, this feature can be deactivated as described in the procedure below. PROCEDURE E85 – On a customer complaint basis only, reprogram the EGS module with Progman 23.0 or higher. It is not possible to deactivate this feature using the retrofit option on the E85. E90, E91 - On a customer complaint basis only, perform the Retrofit - "Converter lockup clutch" using Progman 23.0 (Target Data status: E89x-06-09-520) or higher. Follow the "Retrofit" procedures as outlined in SI B09 05 01.
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