Jerking after taking foot off the brake

[coolhandshin]

     Featured on BIMMERPOST.com

Had the car for almost 6 months now,

yesterday I find that aftering taking the foot off the brake and before the car engages creeping speed, it jerks real badly for a second, almost so that my head moves back and forth.

Funny thing is it just start happening yesterday, perfectly normal before.

After some testing, I find out it only happens in NORMAL and COMFORT gear setting, and does not jerk on SPORT+ and DS modes.

Anyone any insight?

[itinj6]

I've had mine for three months but never experienced this. Have you found a resolution to this issue?

[Superspeed]

No problems after 10 months......

[coolhandshin]

I did some searching and found out some clues.

It's got something to do with the Slope hold function (not falling backwards after stopping at a slope), and the car mistakenly thinks it's in a slope and applies a brake of its own when just standing on a flat surface, and when brake pedal is lifted, and it's owen brake released, the jerking.

Supposedly the reason for this happening is that, in some parking spaces, they have a wheel stoppage rubber for the real wheel on the ground so that you don't back up into the wall or the car behind you, and when the car frequently touches that stoppage rubber and the car's engine turned off, it's slope hold functions gets a little weird.


In fact my apartment's parking spaces have that stoppage rubber on the ground, and I did always park with the real wheel touching the rubber.
After learning this, I avoided backing up that far and so far this jerking movement has not reappeared.

[Superspeed]

Similar things happen to me from time to time:
The car is right, I am wrong

Beaten by the car

[itinj6]

Hmm, interesting.

Wonder why it doesn't do it in Sport+ either.

[NYe60chrisIU]

if you're going to 'jerk' you should probably keep your foot on the break. just my 2 cents.