99 A8 blower motor stayin on
 

Hello everyone.
2 weeks ago i purchased a well kept 99 a8 very little if anthing wrong. It has 154.650 miles.
Just noticed today that after driving my car around this morning in about 50 degree weather here in Massachusetts, parked my car and thehad blower motor stay on. Now i have read other posts on this issue but its alot of a4,s and its coming from right under the air intake under the hood, seems to be blowing but not hard but enough to notice.
If any one has any answers or suggestions on this problemplease do message me or comment on the post please and thank you.