So today as I was pulling my moms 2006 Cooper S. Conv out of a parking space in best buy and as I was selecting drive, the car jerked a little and went into EP mode and when I parked it it jerked as I put it into park. And as we drive, it makes a noise, it's very hard to describe, I believe it's the supercharger going out, but I'm no expert I also thought flywheel too. It has 96k on it

Edit: here's the link for the noise

 

Sounds like you have an automatic (Non-CVT) since you stated that you "selected drive"...so doubt it's an automatic flywheel problem. I have not seen that to be an issue with the GA6F21WA transmission.

But could be a fluid ( JWS 3309 ) level issue or problem with the Control Unit related problem. Part #1 below.

Ever have the system flushed and filled ?

 

Best buy?! They still open? Buy the Extented warrenty?....on the car...not on anything at best buy that is...lol...
Notice any smells? Any engine lites? Don't think a sc failing on an auto will cause a transmission error code.....
I second the thought...tranny ever been drained/filled....
Kinda wonder if the crank damper Made the sound....that is why I was wondering about the smell...
Any chance of describing the sound? Stuck starter motor? Grinding? Screeching?

 

The 100k stuff was all just done this past July so it shouldn't be a fluid problem... I disconnected the battery and let it sit overnight so I still have to see if it's still in EP mode

 

"100K mile stuff" = yes, it was done ?

Wasn't aware of a specific 100K flush/fill.


If it was, and still transmission related, then I am hedging towards the Control Unit Replacement. If so, be sure to have the transmission filter changed as well.

 

According to MINI your mom's MINI has lifetime fluid. It is highly doubtful anything was done with the fluid. Get it changed now & cross your fingers. Good luck to you & your mom.

 

Good news! I recoded a video! Here's the link

 

In order to get better help from the community, see if you can get your hands on a list of what was done to the car to get a better idea on what to look for.
I wouldn't use the word " shouldn't " when it comes to MINI dealers assuming that it was done there

 

Sounds like the beginnings of transmission problems.