The better-half was changing lanes the other day and got a little overzealous with the turn signal indicator. Now it won't cancel when making a left-hand turn and sometimes cancels too far on a right-hand turn ie: cancels the right hand turn and then indicates a left hand turn. How easy is this to fix and how expensive (just ball park figure)? I am not going to attempt it myself because of the air bag....... Thanks in advance.