2009 Mercury Grand Marquis Q&A
2009 Mercury Grand Marquis Question: Does anyone else have multiple problems with your 2009 Mercury?
The heater and air conditioning change randomly from blowing out the floor to the defrost and the vents. Two of the display lights for the heat/air are out. The car makes a noise like air being blown through a straw at random. The automatic trunk release works only sometimes and the alert light for the trunk being open is lit even though the trunk is shut. Don Ledford Ford Dealership in Chattanooga repair shop staff have been everything but helpful. They want to keep the car for a week to "check it out." - Nothappywithmercury
Good mechanic with a professional scanner is what you need! Not necessarily at a dealership. - pushrod