1999 528i

Driving the other day coming to a stop lihgt and stopping, when ready to go off the line my (eml) and (traction assist) warrning indicators came on and also the car didn't want to move, stood on the gas to get out of the intersectio and it didn't help. After a few seconds the warrnings turnned off and all was back to normal. This is the second time tis had happened (4 months ago) I'm taking it in ths weekend , anyone had this problem before?

Thanks Edz