One problem related to hydraulic power assist steering system has been reported for the 1997 Mercury Marquis. The most recently reported issues are listed below.
Vehicle been experiencing ongoing/ intermittent problem with loss of power steering. Vehicle been in/out of dealer shop on four occasions, and informed consumer that they could not find the problem. Seeking help from NHTSA in this matter.
| Steering Gear Box Sector Shaft problems | |
| Power Steering Hose, Piping, And Connections problems | |
| Hydraulic Power Assist Steering System problems | |
| Steering problems |