One problem related to tire pressure light on has been reported for the 2009 Lincoln MKZ. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Lincoln MKZ based on all problems reported for the 2009 MKZ.
The check tire pressure light came on, when I went to have air added, workers noticed a bulge in the side wall. I contacted michelin, I notified michelin of the problem and excess tire tread wear at 22,99 miles. They had me take the tire to 2 locations for inspection (they said to rule out me hitting a curb), both places said it did not appear that I had hit a curb. They were to call be back and I never heard from them, I had to replace 2 tire and the other 2 need to be replaced also. One of the inspectors said he had seen the same issue about 2 weeks earlier with same tire on simular car.