Replicate the situation by driving up to a stop sign and do a rolling, California, stop (i.e., don't come to a complete stop). Get on the gas.

Oh, have the passenger seat and rear seat headrests all the way down so the SA and tech's necks get snapped really good. That'll teach 'em to doubt you!

Alternately, go very slowly up a steep incline and then get on the gas. The key is to have the trans shift from 2nd to 1st from a slow roll.

FWIW, BMW NA replaced my trans after keeping the X overnight w/it hooked up to BMW NA's computer (PUMA case was created for it).

Good Luck!

ADMRANGER, this is great info thank you! What does FWIW mean? Also what is checked when its hooked up to the comp overnight?

FWIW = for what it's worth.

I have no idea what the computer checks for but whatever it was, they must not have liked what they saw. New trans is silky smooth and no more "lurch". Mine was nasty at 48k miles.

Be polite but firm with the service advisor. If he is unwilling to work with you, ask for the service manager. Explain that you are not satisfied with the service and will be unable to offer any rating higher than a 1 for the BMW survey at this time. That should get their attention as their paychecks are heavily influenced by the BMW survey results. Explain that you would love to give them all 5's, but since they won't even try to address your problem, 1's it is. Promise to give them all 5's if they fix the problem (and then live up to your promise and no nasty comments as they see everything you say).

At the very least, they should reprogram the trans with the latest software and see if that helps. If it doesn't (and it didn't in my case), bring it back and have them open a PUMA case for your vehicle. There is also the regional service manager who can help but their jobs appear to be mostly to deny anything (depends on the person...).

Good luck.

I don't know if taking it to BMW of Seattle will help at all, but it might be worth a try. You're kinda stuck w/ the stealership till the warranty expires, and even then I can't recommend any shops in the area. I've had TERRIBLE luck w/ both the indy kitty corner from BMW of Bellevue and the other place in Issaquah, both of which i'm forgetting their names right now. I've made some friends in the Seattle 5's and 7's community when I lived in Kirkland to the point where I was able to fly into town this spring and borrow enough tools to do my mother's clutch in her 328ci. If you ever need any help, maybe I can arrange coming to Seattle to visit friends and/or work (I visit every couple of months for a week or so), then we can tackle the problem together.