Mercury Grand Marquis TSBs
The Grand Marquis has been assigned 479 technical service bulletins (TSB). The 1998 model year has been involved in the most bulletins.
TSBs contain recommended steps and procedures for diagnosing or repairing a known problem. They are issued directly by Mercury to service technicians. You'll often see TSBs used as evidence in lawsuits when owners feel the automaker should help with repairs.