One problem related to windshield has been reported for the 2005 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mercury Grand Marquis based on all problems reported for the 2005 Grand Marquis.
: the contact stated the vehicle was not equipped with quad sun visors. The original sun visors covered only one direction. The manufacturer was informed of the problem. However, the contact purchased additional sun visors to cover both the windshield and the side window at the same time.
| Wiper problems | |
| Visibility problems | |
| Power Window problems | |
| Defogger problems | |
| Windshield problems |