THIS TRANSMISSION IS SLIPPING AGGRESSIVELY. IT HAPPENS ON UP-SHIFT 1-2 AND DOWNSHIFT 2-1. IT HAPPENS LIKE 4 TO 5 TIMES IN A WEEK. ALSO SOMETIMES I GET A BIG SLAM ON BOTH UP-SHIFT AND DOWNSHIFT... WHEN THIS HAPPENS, THE TRANSMISSION MALFUNCTION ERROR MESSAGE POPS UP AND REDUCES MY MOVEMENT TO SAFE-MODE, UNLESS I SHUT THE ENGINE OFF AND RESTART THE ENGINE. IF YOU TAKE TIME TO GO ON BMW FORUMS AND BLOGS, EVERYONE COMPLAIN ABOUT THIS ISSUE WITH THIS 5 SERIES... PLEASE DO SOMETHING.. THE PASSENGER AIRBAG RESTRAINT ERROR POPS UP EVEN WHEN SOMEONE IS NOT SEATING ON THE PASSENGER SIDE.. THIS NEEDS TO BE LOOKED INTO.. ALMOST EVERY BMW OWNER HAS THIS PASSENGER ISSUE...