One problem related to front suspension control arm has been reported for the 2003 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mercury Grand Marquis based on all problems reported for the 2003 Grand Marquis.
Occasional "popping" in right rear of car. On going since car was purchased on Nov. 26, 2002. Reported each time car was taken for service. At servicing on Nov. 11, 2003, technicians found "right rear upper control arm missing. . . Found right rear upper control are bolt out. ".