I have a ridge/line near jaw after MACS facelift. Any suggestions? (photo)

I wouldn't be too worried about it just now (although I appreciate that you are).  These types of issues come up from time to time especially with facial surgery, but it typically shakes out within a few weeks.  Hang in there.

 It is early in your postoperative period and contour irregularities can be seen in facelifts of this type. It is important to remain patient and allow for healing to occur. Discuss with your surgeon whether or not massage is recommended at this time. Some surgeons will clear patience for massage after a few days to a few weeks. In time the majority of these irregularities soften and become more natural looking.

Thank you for the picture.  This may represent a slightly tighter area that has be accentuated by swelling.  You should have a re-evaluation by your plastic surgeon.  This should soften over the next several months.

At 4 days post-op it is not uncommon to have irregularities under the skin.  This will be due to uneven swelling. Give yourself time to heal and most of these will resolve.  IT would be unusual to have anything in that area that would cause permanent creasing.     

What it could be... its likely due to how the skin was repositioned. If to much tension is placed on one area of the skin flap...it will result in a band where the skin is taunt in the direction of pull and looser above and below it, thus creating the line or band appearance. The way to avoid it is to put even distribution of the tension on the skin flap...or to put less tension in that particular area that caused the band. You are still very early and edema can create abnormal forces on the skin. I would not get discouraged this early.... I would wait until the swelling decreases and your skin relaxes which can take a few weeks.