Hello.. ive been planning to be a member but never had the chance. finally, i registered few days ago. i have the older gen e60. 2004 530i. recently 2 warning light lit on my dashboard, 1 is my rear brake (malfunction- it appears to be the the inner set of LEDs are busted) and passenger restraint malfunction. do i need to be mechanically inclined to change the busted parts? i know. first post and problems already thanks in advance.